@article { ISI:000358370700007, title = {Identifying solid luminogens through gold-catalysed intramolecular hydroarylation of alkynes}, journal = {European Journal of Organic Chemistry}, number = {22}, year = {2015}, month = {AUG}, pages = {4860-4867}, publisher = {WILEY-V C H VERLAG GMBH}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {

The identification of a new class of luminogens based on pyrrolo-quinoxaline embedded coumarin (PQC) structures is reported. The reaction relies on the gold-catalyzed hydroarylation reaction of appropriately substituted aryl alkynoates that produces molecules that exhibit solvatochromism and aggregation-induced emission enhancement (AIEE) phenomena. The application of PQCs for live cell imaging has also been demonstrated.

}, keywords = {Cell imaging, Dyes/pigments, fluorescence, Gold, Luminescence, Solvatochromism}, issn = {1434-193X}, doi = {10.1002/ejoc.201500503}, author = {Shaikh, Aslam C. and Shalini, S. and Vaidhyanathan, Ramanathan and Mane, Manoj V. and Barui, Ayan Kumar and Patra, Chitta Ranjan and Venkatesh, Yeduru and Bangal, Prakriti Ranjan and Patil, Nitin T.} } @article { ISI:000368224600009, title = {Lithium-assisted proton conduction at 150 degrees C in a microporous triazine-phenol polymer}, journal = {Advanced Materials Interfaces}, volume = {2}, number = {16}, year = {2015}, month = {NOV}, pages = {1500301}, publisher = {WILEY-BLACKWELL}, address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA}, keywords = {conduction, hydrophobic polar frameworks, lithiated polymers, proton conduction, triazine-phenol polymers}, issn = {2196-7350}, doi = {10.1002/admi.201500301}, author = {Nandi, Shyamapada and Dhavale, Vishal M. and Shalini, Sorout and Werner-Zwanziger, Ulrike and Singh, Harpreet and Kurungot, Sreekumar and Vaidhyanathan, Ramanathan} } @article {45882, title = {Pd loaded amphiphilic COF as catalyst for multi-fold Heck reactions, C-C couplings and CO oxidation}, journal = {Scientific Reports}, volume = {5}, year = {2015}, month = {JUN }, pages = {10876}, type = {Article}, abstract = {

COFs represent a class of polymers with designable crystalline structures capable of interacting with active metal nanoparticles to form excellent heterogeneous catalysts. Many valuable ligands/monomers employed in making coordination/organic polymers are prepared via Heck and C-C couplings. Here, we report an amphiphilic triazine COF and the facile single-step loading of Pd-0 nanoparticles into it. An 18-20\% nano-Pd loading gives highly active composite working in open air at low concentrations (Conc. Pd(0) \< 0.05 mol\%, average TON 1500) catalyzing simultaneous multiple site Heck couplings and C-C couplings using {\textquoteleft}non-boronic acid{\textquoteright} substrates, and exhibits good recyclability with no sign of catalyst leaching. As an oxidation catalyst, it shows 100\% conversion of CO to CO2 at 150 degrees C with no loss of activity with time and between cycles. Both vapor sorptions and contact angle measurements confirm the amphiphilic character of the COF. DFT-TB studies showed the presence of Pd-triazine and Pd-Schiff bond interactions as being favorable.

}, issn = {2045-2322}, doi = {10.1038/srep10876}, author = {Mullangi, Dinesh and Nandi, Shyamapada and Shalini, Sorout and Sreedhala, Sheshadri and Vinod, Chathakudath P. and Vaidhyanathan, Ramanathan} } @article {43598, title = {10000-Fold enhancement in proton conduction by doping of cesium ions in a proton-conducting zwitterionic metal-organic framework}, journal = {European Journal of Inorganic Chemistry}, year = {2016}, month = {SEP}, pages = {4382-4386}, abstract = {Developing metal-organic framework (MOF)-based proton-conducting electrolytes for fuel-cell applications is an important target that has drawn a lot of attention. A key approach involves the selective replacement of the guest species within the pores to enhance performance. The modular and crystalline nature of the MOF permits controlled introduction of such species and characterization of their compositions with high precision, a task which is very difficult to achieve in amorphous polymers. Herein, we partially replaced the protons of a zwitterionic pyridinol in Mg(terephthalate)(pyridinol) MOF 1 with Cs+ ions, which brought about a 10000-fold increase in the proton conductivity (10(-6) to 10(-2) S cm(-1)). Interestingly, Li+ ions could not be loaded, whereas Cs+ ions with smaller hydrated ionic radii could be loaded, and the loading was controlled as a function of time. The Cs+ loading nearly halved the activation energy (from 0.35 for 1 to 0.19 eV for _Cs). The highest conductivities were realized for an optimal loading of Cs+ ions, which was found to be about 10 \% in this case.}, doi = {10.1002/ejic.201600364}, author = {Shalini, Sorout and Aggarwal, Shubhangi and Singh, Santosh K. and Dutt, Malvika and Ajithkumar, Thallaseril G. and Vaidhyanathan, Ramanathan} } @article { ISI:000382246400001, title = {1000-fold enhancement in proton conductivity of a MOF using post-synthetically anchored proton transporters}, journal = {Scientific Reports}, volume = {6}, year = {2016}, month = {AUG}, pages = {32489}, publisher = {NATURE PUBLISHING GROUP}, address = {MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND}, abstract = {

Pyridinol, a coordinating zwitter-ionic species serves as stoichiometrically loadable and non-leachable proton carrier. The partial replacement of the pyridinol by stronger hydrogen bonding, coordinating guest, ethylene glycol (EG), offers 1000-fold enhancement in conductivity (10(-6) to 10(-3) Scm(-1)) with record low activation energy (0.11 eV). Atomic modeling coupled with C-13-SSNMR provides insights into the potential proton conduction pathway functionalized with post-synthetically anchored dynamic proton transporting EG moieties.

}, issn = {2045-2322}, doi = {10.1038/srep32489}, author = {Shalini, Sorout and Dhavale, Vishal M. and Eldho, Kavalakal Mathai and Kurungot, Sreekumar and Ajithkumar, Thalasseril G. and Vaidhyanathan, Ramanathan} } @article {43425, title = {CO2 Laser direct written MOF-based metal-decorated and heteroatom-doped porous graphene for flexible all-solid-state microsupercapacitor with extremely high cycling stability}, journal = {ACS Applied Materials \& Interfaces}, volume = {8}, year = {2016}, month = {NOV}, pages = {31841-31848}, abstract = {Over the past decade, flexible and wearable microelectronic devices and systems have gained significant importance. Because portable power source is an essential need of such wearable devices, currently there is considerable research emphasis on the development of planar interdigitated micro energy-torage devices by employing diverse precursor materials to obtain functional materials (functional carbon, oxides, etc.) with the desirable set of properties. Herein we report for the first time the use of metal organic framework (MOF) and zeolitic imidazolate framework (ZIF-67) for high-wavelength photothermal laser direct writing of metal-decorated, heteroatom-doped, porous few-layer graphene electrodes for microsupercapacitor application. We argue that the specific attributes of MOF as a precursor and the high-wavelength laser writing approach (which creates extremely high localized and transient temperature (>2500 degrees C) due to strong absorption by lattice vibrations) are together responsible for the peculiar interesting properties of the carbon material thus synthesized, thereby rendering extremely high cycling stability to the corresponding microsupercapacitor device. Our device exhibits near 100\% retention after 200 000 cycles as well as stability under 150 degrees bending.}, doi = {10.1021/acsami.6b10193}, author = {Basu, Aniruddha and Roy, Kingshuk and Sharma, Neha and Nandi, Shyamapada and Vaidhyanathan, Ramanathan and Rane, Sunit and Rode, Chandrashekhar V. and Ogale, Satishchandra B.} } @article {45630, title = {Low band gap benzimidazole COF supported Ni3N as highly active OER catalyst}, journal = {Advanced Energy Materials}, volume = {6}, year = {2016}, month = {DEC }, pages = {Article No:1601189}, abstract = {

Covalent organic frameworks (COFs) have structures and morphologies closely resembling graphenes, whose modular construction permits atomiclevel manipulations. This, combined with their porous structure, makes them excellent catalyst supports. Here, the high electrocatalytic activity of a composite, formed by supporting Ni3N nanoparticles on a benzimidazole COF, for oxygen evolution reaction is shown. The composite oxidizes alkaline water with a near-record low overpotential of 230 mV @ 10 mA cm(-2) (eta(10)). This high activity is attributed to the ability of the COF to confine the Ni3N nanoparticles to size regimes otherwise difficult to obtain and to its low band gap character (1.49 eV) arising from the synergy between the conducting Ni3N nanoparticles and the pi-conjugated COF. The COF itself, as a metalfree self-standing framework, has an oxygen evolution reaction activity with 10 of 400 mV. The periodic structure of the COF makes it serve as a matrix to disperse the catalytically active Ni3N nanoparticles favoring their high accessibility and thereby good charge-transport within the composite. This is evident from the amount of O-2 evolved (230 mmol h(-1) g(-1)), which, to the best of our knowledge, is the highest reported. The work reveals the emergence of COF as supports for electrocatalysts.

}, issn = {1614-6832}, doi = {10.1002/aenm.201601189}, author = {Nandi, Shyamapada and Singh, Santosh Kumar and Mullangi, Dinesh and Illathvalappil, Rajith and George, Leena and Vinod, Chathakudath P. and Kurungot, Sreekumar and Vaidhyanathan, Ramanathan} } @article { ISI:000379314700006, title = {Low-overpotential electrocatalytic water splitting with noble-metal-free nanoparticles supported in a sp(3) n-rich flexible COF}, journal = {Advanced Energy Materials}, volume = {6}, number = {13}, year = {2016}, month = {JUL}, pages = {Article No. 1600110}, publisher = {WILEY-V C H VERLAG GMBH}, type = {Article}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {

Covalent organic frameworks (COFs) are crystalline organic polymers with tunable structures. Here, a COF is prepared using building units with highly flexible tetrahedral sp(3) nitrogens. This flexibility gives rise to structural changes which generate mesopores capable of confining very small (\<2 nm sized) non-noble-metal-based nanoparticles (NPs). This nanocomposite shows exceptional activity toward the oxygen-evolution reaction from alkaline water with an overpotential of 258 mV at a current density of 10 mA cm(-2). The overpotential observed in the COF-nanoparticle system is the best in class, and is close to the current record of approximate to 200 mV for any noble-metalfree electrocatalytic water splitting system-the Fe-Co-Ni metal-oxide-film system. Also, it possesses outstanding kinetics (Tafel slope of 38.9 mV dec(-1)) for the reaction. The COF is able to stabilize such small-sized NP in the absence of any capping agent because of the COF-Ni(OH)(2) interactions arising from the N-rich backbone of the COF. Density-functional-theory modeling of the interaction between the hexagonal Ni(OH)(2) nanosheets and the COF shows that in the most favorable configuration the Ni(OH)(2) nanosheets are sandwiched between the sp(3) nitrogens of the adjacent COF layers and this can be crucial to maximizing their synergistic interactions.

}, issn = {1614-6832}, doi = {10.1002/aenm.201600110}, author = {Mullangi, Dinesh and Dhavale, Vishal M. and Shalini, Sorout and Nandi, Shyamapada and Collins, Sean and Woo, Tom and Kurungot, Sreekumar and Vaidhyanathan, Ramanathan} } @article {43726, title = {Secondary interactions arrest the hemiaminal intermediate to invert the modus operandi of schiff base reaction: a route to benzoxazinones}, journal = {Journal of Organic Chemistry}, volume = {82}, year = {2017}, month = {APR}, pages = {4342-4351}, type = {Article}, abstract = {Discovered by Hugo Schiff, condensation between amine and aldehyde represents one of the most ubiquitous reactions in chemistry. This classical reaction is widely used to manufacture pharmaceuticals and fine chemicals. However, the rapid and reversible formation of Schiff base prohibits formation of alternative products, of which benzoxazinones are an important class. Therefore, manipulating the reactivity of two partners to invert the course of this reaction is an elusive target. Presented here is a synthetic strategy that regulates the sequence of Schiff base reaction via weak secondary interactions. Guided by the computational models, reaction between 2,3,4,5,6-pentafluoro-benzaldehyde with 2-amino-6methylbenzoic acid revealed quantitative (99\%) formation of 5-methyl-2-(perfluoropheny01,2-dihydro-4H-benzo[d][1,3]oxazin-4-one (15). Electron donating and electron withdrawing ortho-substituents on 2-aminobenzoic acid resulted in the production of benzoxazinones 936. The mode of action was tracked using low temperature NMR, IN vis spectroscopy, and isotopic (O-18) labeling experiments. These spectroscopic mechanistic investigations revealed that the hemiaminal intermediate is arrested by the hydrogen-bonding motif to yield benzoxazinone. Thus, the mechanistic investigations and DFT calculations categorically rule out the possibility of in situ imine formation followed by ring-closing, but support instead hydrogen-bond assisted ring-closing to prodrugs. This unprecedented reaction represents an interesting and competitive alternative to metal catalyzed and classical methods of preparing benzoxazinone.}, doi = {10.1021/acs.joc.7b00352}, author = {Patel, Ketan and Deshmukh, Satej S. and Bodkhe, Dnyaneshwar and Mane, Manoj and Vanka, Kumar and Shinde, Dinesh and Rajamohanan, Pattuparambil R. and Nandi, Shyamapada and Vaidhyanathan, Ramanathan and Chikkali, Samir H.} } @article {44493, title = {High and reversible lithium ion storage in self-exfoliated triazole-triformyl phloroglucinol-basedcovalent organic nanosheets}, journal = {Advanced Energy Materials}, volume = {8}, year = {2018}, month = {MAR}, pages = {Article Number: 1702170}, abstract = {Covalent organic framework (COF) can grow into self-exfoliated nanosheets. Their graphene/graphite resembling microtexture and nanostructure suits electrochemical applications. Here, covalent organic nanosheets (CON) with nanopores lined with triazole and phloroglucinol units, neither of which binds lithium strongly, and its potential as an anode in Li-ion battery are presented. Their fibrous texture enables facile amalgamation as a coin-cell anode, which exhibits exceptionally high specific capacity of approximate to 720 mA h g(-1) (@100 mA g(-1)). Its capacity is retained even after 1000 cycles. Increasing the current density from 100 mA g(-1) to 1 A g(-1) causes the specific capacity to drop only by 20\%, which is the lowest among all high-performing anodic COFs. The majority of the lithium insertion follows an ultrafast diffusion-controlled intercalation (diffusion coefficient, D-Li(+) = 5.48 x 10(-11) cm(2) s(-1)). The absence of strong Li-framework bonds in the density functional theory (DFT) optimized structure supports this reversible intercalation. The discrete monomer of the CON shows a specific capacity of only 140 mA h g(-1) @50 mA g(-1) and no sign of lithium intercalation reveals the crucial role played by the polymeric structure of the CON in this intercalation-assisted conductivity. The potentials mapped using DFT suggest a substantial electronic driving-force for the lithium intercalation. The findings underscore the potential of the designer CON as anode material for Li-ion batteries.}, doi = {10.1002/aenm.201702170}, author = {Haldar, Sattwick and Roy, Kingshuk and Nandi, Shyamapada and Chakraborty, Debanjan and Puthusseri, Dhanya and Gawli, Yogesh and Ogale, Satishchandra and Vaidhyanathan, Ramanathan} } @article {45385, title = {Highly stable COF-supported Co/Co(OH)(2) nanoparticles heterogeneous catalyst for reduction of nitrile/nitro compounds under mild conditions}, journal = {Small}, volume = {14}, year = {2018}, month = {SEP}, type = {Article}, abstract = {Ordered nanoporosity in covalent organic framework (COF) offers excellent opportunity for property development. Loading nanoparticles (nPs) onto them is one approach to introducing tailor-made properties into a COF. Here, a COF-Co/Co(OH)(2) composite containing about 16 wt\% of <6 nm sized Co/Co(OH)(2) nPs is prepared on a N-rich COF support that catalyzes the release of theoretical equivalence of H-2 from readily available, safe, and cheap NaBH4. Furthermore, the released H-2 is utilized for the hydrogenation of nitrile and nitro compounds to amines under ambient conditions in a facile one-pot reaction. The COF "by choice" is built from "methoxy" functionalized dialdehydes which is crucial in enabling the complete retention of the COF structure under the conditions of the catalysis, where the regular Schiff bonds would have hydrolyzed. The N-rich binding pockets in the COF ensure strong nP-COF interactions, which provides stability and enables catalyst recycling. Modeling studies reveal the crucial role played by the COF in exposing the active facets and thereby in controlling the activation of the reducing agent. Additionally, via density functional theory, we provide a rational explanation for how these COFs can stabilize nanoparticles which grow beyond the limiting pore size of the COF and yet result in a truly stable heterogeneous catalyst - a ubiquitous observation. The study underscores the versatility of COF as a heterogeneous support for developing cheap and highly active nonnoble metal catalysts.}, doi = {10.1002/smll.201801233}, author = {Mullangi, Dinesh and Chakraborty, Debanjan and Pradeep, Anu and Koshti, Vijay and Vinod, Chathakudath P. and Panja, Soumendranath and Nair, Sunil and Vaidhyanathan, Ramanathan} } @article {46326, title = {Ag nanoparticles supported on a resorcinol-phenylenediamine-based covalent organic framework for chemical fixation of CO2}, journal = {Chemistry-An Asian Journal }, year = {2019}, month = {OCT}, type = {Article; Early Access}, abstract = {

Covalent organic frameworks are a new class of crystalline organic polymers possessing a high surface area and ordered pores. Judicious selection of building blocks leads to strategic heteroatom inclusion into the COF structure. Owing to their high surface area, exceptional stability and molecular tunability, COFs are adopted for various potential applications. The heteroatoms lining in the pores of COF favor synergistic host-guest interaction to enhance a targeted property. In this report, we have synthesized a resorcinol-phenylenediamine-based COF which selectively adsorbs CO2 into its micropores (12 angstrom). The heat of adsorption value (32 kJ mol(-1)) obtained from the virial model at zero-loading of CO2 indicates its favorable interaction with the framework. Furthermore, we have anchored small-sized Ag nanoparticles (approximate to 4-5 nm) on the COF and used the composite for chemical fixation of CO2 to alkylidene cyclic carbonates by reacting with propargyl alcohols under ambient conditions. Ag@COF catalyzes the reaction selectively with an excellent yield of 90 \%. Recyclability of the catalyst has been demonstrated up to five consecutive cycles. The post-catalysis characterizations reveal the integrity of the catalyst even after five reaction cycles. This study emphasizes the ability of COF for simultaneous adsorption and chemical fixation of CO2 into corresponding cyclic carbonates.

}, keywords = {CO2 capture, covalent organic frameworks, cyclic carbonates, Propargyl alcohols, silver nanoparticles}, issn = {1861-4728}, doi = {10.1002/asia.201901157}, author = {Chakraborty, Debanjan and Shekhar, Pragalbh and Singh, Himan Dev and Kushwaha, Rinku and Vinod, C. P. and Vaidhyanathan, Ramanathan} } @article {47176, title = {Aqueous-phase differentiation and speciation of Fe3+ and Fe2+ using water-stable photoluminescent lanthanide-based metal-organic framework}, journal = {ACS Applied Nano Materials}, volume = {2}, year = {2019}, month = {AUG}, pages = {5169-5178}, type = {Article}, abstract = {

Fe2+ is vital to O-2 transportation and photosynthesis regulated by oxidases and reductases. On the other hand, Fe3+ is detrimental due to its irreversible binding to O-2. Hence there is a need for selective identification of Fe3+ from aqueous systems in the presence of Fe2+. However, given their close chemical nature, it is not straightforward to differentiate them. Fe2+ and Fe3+ are typically sensed and differentiated using magnetic measurements, Mossbauer, X-ray absorption spectroscopy, or EXAFS, which are complex and equipment intensive techniques. In comparison, the fluorescence technique is advantageous in terms of time and accessibility. Although readily available lanthanide salts exhibit fluorescence, they are weak, and to serve as an optical probe, their luminescence has to be enhanced via ligand design. Hence we have designed a chromophoric ligand that can covalently bind to lanthanides and enhance its fluorescence intensity, and it binds selectively to Fe3+ through its nitrogen centers. It detects Fe3+ from low concentration (similar to 100 mu M) aqueous solutions, with fast response time (\<1 min) and with a detection limit of 3.6 ppm. Importantly, the Fe3+ adsorbed MOF can be readily reactivated for the next cycle by merely washing with an aqueous ascorbic acid solution and can be used for multiple cycles without any appreciable loss in activity. This makes the Ln-MOF an environmentally benign, cost-effective, scalable, and recyclable probe.

}, keywords = {Fe3+ differentiation and speciation, flexible ligand, fluorescent MOF, iron speciation, Metal-organic framework, water sorption}, issn = {2574-0970}, doi = {10.1021/acsanm.9b01047}, author = {Maity, Rahul and Chakraborty, Debanjan and Nandi, Shyamapada and Yadav, Ankit Kumar and Mullangi, Dinesh and Vinod, C. P. and Vaidhyanathan, Ramanathan} } @article {46294, title = {Carbon derived from soft pyrolysis of a covalent organic framework as a support for small-sized RuO2 showing exceptionally low overpotential for oxygen evolution reaction}, journal = {ACS Omega}, volume = {4}, year = {2019}, month = {AUG}, pages = {13465-13473}, type = {Article}, abstract = {

Electrochemical water splitting is the most energy-efficient technique for producing hydrogen and oxygen, the two valuable gases. However, it is limited by the slow kinetics of the anodic oxygen evolution reaction (OER), which can be improved using catalysts. Covalent organic framework (COF)-derived porous carbon can serve as an excellent catalyst support. Here, we report high electrocatalytic activity of two composites, formed by supporting RuO2 on carbon derived from two COFs with closely related structures. These composites catalyze oxygen evolution from alkaline media with overpotentials as low as 210 and 217 mV at 10 mA/cm(2), respectively. The Tafel slopes of these catalysts (65 and 67 mV/dec) indicate fast kinetics compared to commercial RuO2. The observed activity is the highest among all RuO2-based heterogeneous OER catalysts-a touted benchmark OER catalyst. The high catalytic activity arises from the extremely small-sized (similar to 3-4 nm) RuO2 nanoparticles homogeneously dispersed in a micro-mesoporous (BET = 517 m(2)/g) COF-derived carbon. The porous graphenic carbon favors mass transfer, while its N-rich framework anchors the catalytic nanoparticles, making it highly stable and recyclable. Crucially, the soft pyrolysis of the COF enables the formation of porous carbon and simultaneous growth of small RuO2 particles without aggregation.

}, issn = {2470-1343}, doi = {10.1021/acsomega.9b01777}, author = {Chakraborty, Debanjan and Nandi, Shyamapada and Illathvalappil, Rajith and Mullangi, Dinesh and Maity, Rahul and Singh, Santosh K. and Haldar, Sattwick and Vinod, Chathakudath P. and Kurungot, Sreekumar and Vaidhyanathan, Ramanathan} } @article {46117, title = {Cu/Cu2O nanoparticles supported on a phenol-pyridyl COF as a heterogeneous catalyst for the synthesis of unsymmetrical diynes via glaser-hay coupling}, journal = {ACS Applied Materials \& Interfaces}, volume = {11}, year = {2019}, month = {MAY }, pages = {15670-15679}, type = {Article}, abstract = {

Covalent organic frameworks (COFs) are a new class of porous crystalline polymers with a modular construct that favors fiinctionalization. COF pores can be used to grow nanoparticles (nPs) with dramatic size reduction, stabilize them as dispersions, and provide excellent nP access. Embedding substrate binding sites in COFs can generate host-guest synergy, leading to enhanced catalytic activity. In this report, Cu/Cu2O nPs (2-3 nm) are grown on a COF, which is built by linking a phenolic trialdehyde and a triamine through Schiff bonds. Their micropores restrict the nP to exceptionally small sizes (similar to 2-3 nm), and the pore walls decorated with strategically positioned hydrogen-bonding phenolic groups anchor the substrates via hydrogen-bonding, whereas the basic pyridyl sites serve as cationic species to stabilize the [CuclusterCl2](2-) type reactive intermediates. This composite catalyst shows high activity for Glaser-Hay heterocoupling reactions, an essential 1,3-diyne yielding reaction with widespread applicability in organic synthesis and material science. Despite their broad successes in homocoupled products, preparation of unsymmetrical 1,3-diynes is challenging due to poor selectivity. Here, our COF-based Cu catalyst shows elevated selectivity toward heterocoupling product(s) (Cu nP loading 0.0992 mol \%; turn over frequency: similar to 4S-50; turn over number: similar to 17S-190). The reversible redox activity at the Cu centers has been demonstrated by carrying out X-ray photoelectron spectroscopy on the frozen reactions, whereas the crucial interactions between the substrates and the binding sites in their optimized configurations have been modeled using density functional theory methods. This report emphasizes the utility of COFs in developing a heterogeneous catalyst for a truly challenging organic heterocoupling reaction.

}, keywords = {Copper nanoparticles, Covalent organic framework, Glaser-Hay heterocoupling, heterogeneous catalysis, unsymmetrical diynes}, issn = {1944-8244}, doi = {10.1021/acsami.9b02860}, author = {Chakraborty, Debanjan and Nandi, Shyamapada and Mullangi, Dinesh and Haldar, Sattwick and Vinod, Chathakudath P. and Vaidhyanathan, Ramanathan} } @article {47318, title = {Nanoporous covalent organic framework embedded with Fe/Fe3O4 nanoparticles as air-stable low-density nanomagnets}, journal = {ACS Applied Nano Materials}, volume = {3}, year = {2020}, month = {SEP }, pages = {9088-9096}, type = {Article}, abstract = {

Covalent organic frameworks (COFs) made of light atoms such as H, C, N, and O with a significant void-to-framework ratio are excellent low-density supports for nanoparticles (nPs). Their framework can be precoded with heteroatoms to ensure binding with metallic nanoclusters. With these advantages, if controlled amounts of magnetic nPs are anchored to them, they can yield low-density organic-inorganic nanomagnets. Their organic nature facilitates fusion with bulk materials such as paper/textile to enable bulk composites with well-dispersed low-density magnets, which have potential for defense and next-generation aviation applications. Herein, we have grown small Fe/Fe3O4 nPs (5-18 wt \%) inside a COF. Interestingly, 300 mg of this organic-inorganic framework material (containing 50 mg of nPs) can lift a vial of similar to 15,000 mg (300 times heavier). Also, the hydrophobic COF wraps around the Fe/Fe3O4 nanocluster retaining its room-temperature magnetic character even after 1 year, while the naked nPs lose it within a few days because of air oxidation. Bulk composites with paper and polymers have been made using this low-density Fe-COF to demonstrate their processability.

}, keywords = {air-stable nanomagnets, Covalent organic framework, Fe/Fe3O4 nanoparticles, low-density nanomagnets, magnetic rayon, nanoporous COF}, issn = {2574-0970}, doi = {10.1021/acsanm.0c01762}, author = {Kushwaha, Rinku and Kaleeswaran, Dhananjayan and Haldar, Sattwick and Chakraborty, Debanjan and Mullangi, Dinesh and Borah, Aditya and Vinod, Chathakudath P. and Murugavel, Ramaswamy and Vaidhyanathan, Ramanathan} } @article {46881, title = {Room temperature processed in-situ carbon-coated vanadium carbide (VC@C) as a high capacity robust Li/Na battery anode material}, journal = {Carbon}, volume = {161}, year = {2020}, month = {MAY}, pages = {108-116}, type = {Article}, abstract = {

3D carbide systems with their robust physical and mechanical properties have always attracted multiple application interests. In this report, we have synthesized a three-dimensional in-situ carbon coated cubic carbide, Vanadium Carbide (VC@C), by a very simple, scalable and cost-effective room temperature mechano-chemical ball-milling procedure and researched its promise as effective anode material for Li and Na ion batteries. We have demonstrated that VC@C shows an impressive initial discharge/lithiation capacity of 1165 mAh g(-1) with a high reversible capacity of 640 mAh g(-1) after 100 charge-discharge cycles at an applied current density of 0.1 A g(-1). We have also found that this material renders a very promising rate performance with significantly low capacity drop after exposing it to variable current densities ranging from 0.05 A g(-1) to 2 A g(-1) with an excellent stability up to 1000 cycles owing to its structural robustness, as verified by post-cycling characterizations. A Li-ion full cell study using LiCoO2 as cathode also showed excellent promise in terms of practical application demonstrating a reversible capacity of 95 mAh g(-1) after 100 cycles. Even for Na insertion/de-insertion VC@C shows a clear promise in terms of capacity, cyclic stability and rate performance. (C) 2020 Elsevier Ltd. All rights reserved.

}, keywords = {3D carbide, In-situ synthesis, Li-ion battery, Post cycling characterization, Room temperature ball milling, Williamson-Hall analysis}, issn = {0008-6223}, doi = {10.1016/j.carbon.2020.01.057}, author = {Mahajan, Mani and Roy, Kingshuk and Parmar, Swati and Singla, Gourav and Pandey, O. P. and Singh, K. and Vaidhyanathan, Ramanathan and Ogale, Satishchandra} } @article {47067, title = {Exceptional capacitance enhancement of a non-conducting COF through potential-driven chemical modulation by redox electrolyte}, journal = {Advanced Energy Materials}, volume = {11}, year = {2021}, month = {APR}, pages = {2003626}, type = {Article}, abstract = {

Capacitors are the most practical high-storage and rapid charge-release devices. The number of ions stored per unit area and their interaction strength with the electrode dictates capacitor-performance. Microporous materials provide a high storage surface and optimal interactions. Adsorbing electron-rich and easily polarizable molecules into microporous electrodes is expected to boost Faradaic pseudo-activity. If such electrode-electrolyte interactions can be made as a potential-driven reversible process, the resulting capacitors would be adaptable and device-friendly. A composite covalent organic framework (COF)-carbon electrode with redox-active KI is combined in an H2SO4 electrolyte for the first time. This composite electrode benefits from the redox-functionality of COF and electronic conductivity of carbon, leading to superior capacitative activity. Operando spectro-electrochemical measurements reveal the existence of multiple polyiodide species, although the I-3(-) is the predominantly electroactive species adsorbing on the microporous triazine-phenol COF electrode. A systematic fabrication of the flexible solid-state devices using the COF-redox-electrolyte reveals a high areal capacitance of 270 +/- 11 mF cm(-2) and gravimetric capacitance of 57 +/- 8 F g(-1). The inclusion of KI in H2SO4 (electrolyte) yields an approximately eight-fold enhancement in solid-state gravimetric specific capacitance. The imine-COF retains 89\% of its capacity even after 10 000 cycles.

}, keywords = {covalent organic frameworks, polyiodide, redox electrolytes, solid\&\#8208, state capacitors, Supercapacitors}, issn = {1614-6832}, doi = {10.1002/aenm.202003626, Early Access Date = FEB 2021}, author = {Kushwaha, Rinku and Haldar, Sattwick and Shekhar, Pragalbh and Krishnan, Akshara and Saha, Jayeeta and Hui, Pramiti and Vinod, Chathakudath Prabhakaran and Subramaniam, Chandramouli and Vaidhyanathan, Ramanathan} } @article {47690, title = {Three in one: triple G-C-T base-coded brahma nucleobase amino acid: synthesis, peptide formation, and structural features}, journal = {Journal of Organic Chemistry}, volume = {86}, year = {2021}, month = {NOV }, pages = {15689-15694}, type = {Article}, abstract = {This note reports the synthesis and peptide formation of a novel triple G-C-T nucleobase amino acid (NBA) building block featuring three recognition faces: DDA (G mimic), DAA (C mimic), and ADA (T mimic). Readily obtainable in multigram scale in a remarkably easy one-step reaction, this unique NBA building block offers scope for wide ranging applications for nucleic acid recognition and nucleic acid peptide/protein interaction studies.}, issn = {0022-3263}, doi = {10.1021/acs.joc.1c01228}, author = {Wagh, Mahendra A. and Maity, Rahul and Bhosale, Rohit J. and Semwal, Divyam and Tothadi, Srinu and Vaidhyanathan, Ramanathan and Sanjayan, Gangadhar J.} } @article {48067, title = {Coordination flexibility aided CO2-specific gating in an iron isonicotinate MOF}, journal = {Chemistry-an Asian Journal}, volume = {17}, year = {2022}, month = {FEB}, pages = {e202101305}, type = {Article}, abstract = {

Coordination flexibility assisted porosity has been introduced into an Iron-isonicotinate metal-organic framework (MOF), (Fe(4-PyC)(2) . (OH). The framework showed CO2-specific gate opening behavior, which gets tuned as a function of temperature and pressure. The MOF {\textquoteleft} s physisorptive porosity towards CO2, CH4, and N-2 was investigated; it adsorbed only CO2 via a gate opening phenomenon. The isonicotinate, representing a borderline soft base, is bound to the hard Fe3+ centre through monodentate carboxylate and pyridyl nitrogen. This moderately weak binding enables isonicotinate to spin like a spindle under the CO2 pressure opening the gate for a sharp increase in CO2 uptake at 333 mmHg (At 298 K, the CO2 uptake increases from 0.70 to 1.57 mmol/g). We investigated the MOF {\textquoteleft} s potential for CO2/N-2 and CO2/CH4 gas separation aided by this gating. IAST model reveals that the CO2/N-2 selectivity jumps from 325 to 3131 when the gate opens, while the CO2/CH4 selectivity increases three times. Interestingly, this Fe-isonicotinate MOF did not follow the trend set by our earlier reported Hard-Soft Gate Control (established for isostructural M2+-isonicotinate MOFs (M=Mg, Mn)). However, we account for this discrepancy using the different oxidation state of metals confirmed by X-ray photoelectron spectroscopy and magnetism.

}, keywords = {CO2 capture, flexible MOF, gating, Isonicotinic}, issn = {1861-4728}, doi = {10.1002/asia.202101305}, author = {Singh, Himan Dev and Nandi, Shyamapada and Chakraborty, Debanjan and Singh, Kirandeep and Vinod, Chathakudath P. and Vaidhyanathan, Ramanathan} } @article {48070, title = {Covalent organic framework with electrodeposited copper nanoparticles - a desirable catalyst for the Ullmann coupling reaction}, journal = {Journal of Materials Chemistry A}, volume = {10}, year = {2022}, month = {JUL}, pages = {15647-15656}, type = {Article}, abstract = {

A covalent organic framework is a porous covalently-linked polymeric assembly built from molecular lego blocks, the monomers. A COF{\textquoteright}s high surface area, ordered pores, and intrinsic low density makes it a perfect heterogeneous catalyst component. Dispersing catalytic metal nanoparticles into the porous COF matrix in a {\textquoteleft}capping-agent-free{\textquoteright} manner can aid the maximal utilization of the active sites. To generate single-site catalysts, metals have been anchored to dense supports, or metal ions have been coordinated to the porous organic framework. The latter has superior atom efficiency and a substrate diffusion advantage. Stably nestling neutral metallic clusters into open-framework supports with no specifically strong binding groups requires a different approach. If infused from extremely dilute electrolytes, metal clusters can be nanoconfined into electrically activated COFs. At low-loadings, it can resemble a single-site catalyst with high atom efficiency. Herein, we report the larger scale synthesis of IISERP-COF15 and electrochemical loading of copper nanoparticles into its pores at loadings as low as 3.34 wt\%. We employed classical Ullmann reactions to adjudge its activity. Typical turnover numbers for the catalysts reported in the literature are approximately 50-100. A Cu@COF shows high activity with a very low catalyst loading of 0.25 mol\% (TON around similar to 300-350 vs. 4 for neat CuCl2 center dot 2H(2)O (homogeneous catalyst) and turnover frequency (similar to 15-17 h(-1))). We recycled it for up to 3 cycles. Furthermore, we report a multi-fold Ullmann reaction producing an unreported hexaaldehyde to demonstrate the latitude of the catalyst. Our work points to the potential of a dilutely loaded metal@COF as a mimic of the single-site catalyst for synthesizing valuable C-O linked molecules. Our findings from computational modeling shed light on the role of the COF as an active nanoporous support for Ullmann C-O coupling.

}, issn = {2050-7488}, doi = {10.1039/d2ta01326f}, author = {Chandran, Chandana and Singh, Himan Dev and Leo, Liya S. and Shekhar, Pragalbh and Rase, Deepak and Chakraborty, Debanjan and Vinod, Chathakudath P. and Vaidhyanathan, Ramanathan} } @article {48132, title = {Incorporating conducting polypyrrole into a polyimide COF for carbon-free ultra-high energy supercapacitor}, journal = {Advanced Energy Materials}, volume = {12}, year = {2022}, month = {SEP}, pages = {2200754}, type = {Article}, abstract = {

Redox-active covalent organic frameworks (COFs) store charges but possess inadequate electronic conductivity. Their capacitive action works by storing H+ ions in an acidic electrolyte and is typically confined to a small voltage window (0-1 V). Increasing this window means higher energy and power density, but this risks COF stability. Advantageously, COF{\textquoteright}s large pores allow the storage of polarizable bulky ions under a wider voltage thus reaching higher energy density. Here, a COF-electrode-electrolyte system operating at a high voltage regime without any conducting carbon or redox active oxides is presented. Conducting polypyrrole (Ppy) chains are synthesized within a polyimide COF to gain electronic conductivity (approximate to 10 000-fold). A carbon-free quasi-solid-state capacitor assembled using this composite showcases high pseudo-capacitance (358 mF cm(-2)@1 mA cm(-2)) in an aqueous gel electrolyte. The synergy among the redox-active polyimide COF, polypyrrole and organic electrolytes allows a wide-voltage window (0-2.5 V) leading to high energy (145 mu Wh cm(-2)) and power densities (4509 mu W cm(-2)). Amalgamating the polyimide-COF and the polypyrrole as one material minimizes the charge and mass transport resistances. Computation and experiments reveal that even a partial translation of the modules/monomers intrinsic electronics to the COF imparts excellent electrochemical activity. The findings unveil COF-confined polymers as carbon-free energy storage materials.

}, keywords = {carbon free capacitors, cation-anion co-storage, conductivity, high energy capacitors, polypyrrole doped COFs}, issn = {1614-6832}, doi = {10.1002/aenm.202200754}, author = {Haldar, Sattwick and Rase, Deepak and Shekhar, Pragalbh and Jain, Chitvan and Vinod, Chathakudath Prabhakaran and Zhang, En and Shupletsov, Leonid and Kaskel, Stefan and Vaidhyanathan, Ramanathan} } @article {48183, title = {Synergistic electronic effects in AuCo nanoparticles stabilized in a triazine-based covalent organic framework: a catalyst for methyl orange and methylene blue reduction}, journal = {ACS Applied Nano Materials}, volume = {5}, year = {2022}, month = {APR }, pages = {4744-4753}, type = {Article}, abstract = {

Developing stable active catalysts for reducing water-soluble pollutants is a desirable target. In this pursuit, we have functionalized covalent organic frameworks (COFs) with gold (Au) and cobalt (Co) nanoparticles via a one-step aqueous synthesis process, and their catalytic activity in reducing methyl orange and methylene blue is examined. Operando absorbance measurements of methyl orange (anionic dye) reduction revealed AuCoCOF (1.3 Au/1.0 Co) to have superior kinetics over many other catalysts, which typically require additional external stimuli (e.g., photons) and higher catalyst loadings. After confirming the homogeneous dispersion of the nanoparticles on the COF support using three-dimensional (3D) tomography and material stability through powder X-ray diffraction (PXRD), infrared (IR), and thermal studies, we investigated their redox activity. Cyclic voltammetry (CV) confirmed the involvement of both metals in the redox process, while spectroelectrochemical measurements show that their activity and kinetics remain unaltered by an applied potential. Solid-state UV measurements reveal that the neat COF is a semiconductor with a large band gap (2.8 eV), which is substantially lowered when loaded with cobalt nanoparticles (2.2 eV for CoCOF). The electronic synergy between Au and Co nanoparticles further reduces the band gap of AuCoCOF (1.9 eV). Thus, there is a definite advantage in doping non-noble metal nanoparticles into a noble metal lattice and nanoconfining them into a porous COF support. Our study highlights the significance of bimetallic COF-supported nanocatalysts, wherein one can engage each component toward targeted applications that demand redox activity with favorable kinetics.

}, keywords = {AuCoCOF, band gaps, Covalent organic framework, methyl orange reduction, Nanoparticles, UV-vis spectroscopy}, doi = {10.1021/acsanm.1c04212}, author = {Devulapalli, Venkata Swaroopa Datta and Kushwaha, Rinku and Ovalle, Edwin and Singh, Himan Dev and Shekhar, Pragalbh and Chakraborty, Debanjan and Vinod, Chathakudath Prabhakaran and Vaidhyanathan, Ramanathan and Borguet, Eric} } @article {48795, title = {COF-supported zirconium oxyhydroxide as a versatile heterogeneous catalyst for Knoevenagel condensation and nerve agent hydrolysis}, journal = {iScience}, volume = {26}, year = {2023}, month = {NOV}, pages = {108088}, type = {Article}, abstract = {

A composite of catalytic Lewis acidic zirconium oxyhydroxides (8 wt \%) and a covalent organic framework (COF) was synthesized. X-ray diffraction and infrared (IR) spectroscopy reveal that COF{\textquoteright}s structure is pre-served after loading with zirconium oxyhydroxides. Electron microscopy confirms a homogeneous distri-bution of nano-to sub-micron-sized zirconium clusters in the COF. 3D X-ray tomography captures the micron-sized channels connecting the well-dispersed zirconium clusters on the COF. The crystalline ZrOx(OH)(y)@COF{\textquoteright}s nanostructure was model-optimized via simulated annealing methods. Using 0.8 mol \% of the catalyst yielded a turnover number of 100-120 and a turnover frequency of 160-360 h(-1) for Knoevenagel condensation in aqueous medium. Additionally, 2.2 mol \% of catalyst catalyzes the hy-drolysis of dimethyl nitrophenyl phosphate, a simulant of nerve agent Soman, with a conversion rate of 37\% in 180 min. The hydrolytic detoxification of the live agent Soman is also achieved. Our study unveils COF-stabilized ZrOx(OH)(y) as a new class of zirconium-based Lewis + Bronsted-acid catalysts.

}, doi = {10.1016/j.isci.2023.108088}, author = {Shekhar, Pragalbh and Devulapalli, Venkata Swaroopa Datta and Reji, Reshma and Singh, Himan Dev and Jose, Aleena and Singh, Piyush and Torris, Arun and Vinod, Chatakudath P. and Tokarz III, John A. and Mahle, John J. and Peterson, Gregory W. and Borguet, Eric and Vaidhyanathan, Ramanathan} } @article {48448, title = {Hydroxide ion-conducting viologen-bakelite organic frameworks for flexible solid-state zinc-air battery applications}, journal = {Nanoscale Horizons}, volume = {8}, year = {2023}, month = {JAN }, pages = {224-234}, type = {Article}, abstract = {

Adaptable polymer-based solid-state electrolytes can be a game-changer toward safe, lightweight flexible batteries. We present a robust Bakelite-type organic polymer covalently decked with viologen, triazine, and phenolic moieties. Its flexible structure with cationic viologen centers incorporates counter-balancing free hydroxide ions into the polymeric framework. By design, the aromatic groups and heteroatoms in the framework can be activated under an applied potential to prompt a push-pull drive, setting off the towing of hydroxide ions via weak electrostatic, van der Waals, and hydrogen-bond interactions. The frontier orbitals from a DFT-modeled structure certify this. The hydroxyl-polymer requires minimal KOH wetting to maintain a humid environment for Grotthuss-type transport. The hydroxide ion conductivity reaches a value of 1.4 x 10(-2) S cm(-1) at 80 degrees C and 95\% RH, which is retained for over 15 h. We enhanced its practical utility by coating it as a thin solid-state separator-cum-electrolyte on readily available filter paper. The composite exhibits a conductivity of 4.5 x 10(-3) S cm(-1) at 80 degrees C and 95\% RH. A zinc-air battery (ZAB) constructed using this polymer-coated paper as electrolyte yields a maximum power density of 115 mW cm(-2) and high specific capacitance of 435 mA h g(-1). The power density recorded for our ZAB is among the best reported for polymer electrolyte-based batteries. Subsequently, the flexible battery fabricated with IISERP-POF11_OH@FilterPaper exhibits an OCV of 1.44 V, and three batteries in series power a demo traffic signal. To underscore the efficiency of hydroxide ion transport through the complex multifunctional backbone of the polymer, we calculated the diffusion coefficient for OH- (Exp: 2.9 x 10(-5) cm(2) s(-1); Comp. 5.2 x 10(-6) cm(2) s(-1)) using electrochemical methods and MD simulations. Climbing-edge NEB calculations reveal a large energy barrier of 2.11 eV for Zn2+ to penetrate the polymer and identify hydroxide ions within the polymer, suggesting no undesirable Zn2+ crossover. Our findings assert the readily accessible C-C-linked cationic polymer{\textquoteright}s capacity as a solid-state electrolyte for ZABs and any anion-conducting membrane.

}, issn = {2055-6756}, doi = {10.1039/d2nh00455k}, author = {Rase, Deepak and Illathvalappil, Rajith and Singh, Himan Dev and Shekhar, Pragalbh and Leo, Liya S. and Chakraborty, Debanjan and Haldar, Sattwick and Shelke, Ankita and Ajithkumar, Thalasseril G. and Vaidhyanathan, Ramanathan} } @article {48735, title = {Made to measure squaramide COF cathode for zinc dual-ion battery with enriched storage via redox electrolyte}, journal = {Advanced Energy Materials}, volume = {13}, year = {2023}, month = {SEP}, type = {Article}, abstract = {

Aqueous rechargeable batteries are promising grid-scale energy storage devices because of their affordability, operational safety, and environmental benignity. Among these, Zn-ion batteries (ZIBs) have unfolded new horizons. Designing superior cathodes for ZIBs is crucial. Covalent organic frameworks (COFs) can be made redox active with a high storage surface. Here, for the first time, a chelating COF with redox-active ZnI2 in a ZnSO4(aq) electrolyte is combined. Including iodide harvests an approximately threefold enhancement in capacity from 208 to 690 mAh g(-1) at 1.5 A g(-1), the highest among all the COF-derived ZIBs. Remarkably, a charge-discharge curve at 1.3 V exhibits very limited dropout voltage and super-flat platform, with a remarkable capacity of 600 mAh g(-1) at 5 A g(-1) stable up to 6000 cycles, confirming that the polyiodide generation and storage are sustainable. The COF{\textquoteright}s dual-ion storage (Zn2+ and polyidode) delivers a ZIB with the highest energy density. Spectro-electrochemical measurements coupled with X-ray photoelectron spectroscopy unambiguously unveil the existence of multiple polyiodide species, with I-3(-) and IO3- ions as the prominent species. The latter gets reduced at the COF electrode under an applied potential, leaving I-3(-) as the major species stored on the COF. The prospect of COF-polyiodide((aq)) is a windfall for metal-ion batteries.

}, keywords = {covalent organic frameworks, flexible batteries, polyiodide, redox electrolytes, Zn ion batteries}, issn = {1614-6832}, doi = {10.1002/aenm.202301049}, author = {Kushwaha, Rinku and Jain, Chitvan and Shekhar, Pragalbh and Rase, Deepak and Illathvalappil, Rajith and Mekan, Deep and Camellus, Augastus and Vinod, Chathakudath Prabhakaran and Vaidhyanathan, Ramanathan} } @article {48953, title = {Tailoring COFs: transforming nonconducting 2D layered COF into a conducting quasi-3D architecture via interlayer knitting with polypyrrole}, journal = {Journal of the American Chemical Society}, volume = {146}, year = {2023}, month = {DEC}, pages = {487-499}, type = {Journal Article}, abstract = {

Improving the electronic conductivity and the structural robustness of covalent organic frameworks (COFs) is paramount. Here, we covalently cross-link a 2D COF with polypyrrole (Ppy) chains to form a quasi-3D COF. The 3D COF shows well-defined reflections in the SAED patterns distinctly indexed to its modeled crystal structure. This knitting of 2D COF layers with conjugated polypyrrole units improves electronic conductivity from 10(-9) to 10(-2 )S m(-1). This conductivity boost is affirmed by the presence of density of states near the Fermi level in the 3D COF, and this elevates the COF{\textquoteright}s valence band maximum by 0.52 eV with respect to the parent 2D pyrrole-functionalized COF, which agrees well with the opto-electro band gaps. The extent of HOMO elevation suggests the predominant existence of a polaron state (radical cation), giving rise to a strong EPR signal, most likely sourced from the cross-linking polypyrrole chains. A supercapacitor devised with COF20-Ppy records a high areal capacitance of 377.6 mF cm(-2), higher than that of the COF loaded with noncovalently linked polypyrrole chains. Thus, the polypyrrole acts as a {\textquoteleft}{\textquoteleft}conjugation bridge{\textquoteright}{\textquoteright} across the layers, lowering the band gap and providing polarons and additional conduction pathways. This marks a far-reaching approach to converting many 2D COFs into highly ordered and conducting 3D ones.

}, keywords = {covalent organic frameworks, Electrical conductivity}, issn = {0002-7863}, doi = {10.1021/jacs.3c09937}, author = {Jain, Chitvan and Kushwaha, Rinku and Rase, Deepak and Shekhar, Pragalbh and Shelke, Ankita and Sonwani, Disha and Ajithkumar, Thalasseril G. and Vinod, Chathakudath Prabhakaran and Vaidhyanathan, Ramanathan} } @article {49192, title = {Resorcinol-Azodianiline Covalent Organic Framework Supported FeOOH Quantum Dot-Catalyzed Electrochemical Ammonia Synthesis under Ambient Conditions}, journal = {CHEMISTRY OF MATERIALS}, volume = {36}, year = {2024}, month = {AUG}, pages = {8229-8238}, type = {Journal Article}, keywords = {conversion, nitrogen, Recent Progress, reduction}, issn = {0897-4756}, doi = {10.1021/acs.chemmater.4c00859}, author = {Shekhar, Pragalbh and Kosugi, Kento and Singh, Himan Dev and Kushwaha, Rinku and Rase, Deepak and Matsuzaki, Takumi and Jain, Chitvan and Singh, Piyush and Singh, Yashraj and Vinod, Chathakudath Prabhakaran and Kondo, Mio and Masaoka, Shigeyuki and Vaidhyanathan, Ramanathan} }