06517nas a2200205 4500008004100000245012300041210006900164260000800233490000700241520576600248100002806014700002706042700001806069700001706087700002206104700001906126700002406145700002006169856012206189 2019 eng d00aWeak intermolecular interactions in covalent organic framework-carbon nanofiber based crystalline yet flexible devices0 aWeak intermolecular interactions in covalent organic frameworkca cAUG0 v113 a

The redox-active and porous structural backbone of covalent organic frameworks (COFs) can facilitate high-performance electrochemical energy storage devices. However, the utilities of such 2D materials as supercapacitor electrodes in advanced self-charging power-pack systems have been obstructed due to the poor electrical conductivity and subsequent indigent performance. Herein, we report an effective strategy to enhance the electrical conductivity of COF thin sheets through the in situ solid-state inclusion of carbon nanofibers (CNF) into the COF precursor matrix. The obtained COF-CNF hybrids possess a significant intermolecular π···π interaction between COF and the graphene layers of the CNF. As a result, these COF-CNF hybrids (DqTp-CNF and DqDaTp-CNF) exhibit good electrical conductivity (0.25 × 10–3 S cm–1), as well as high performance in electrochemical energy storage (DqTp-CNF: 464 mF cm–2 at 0.25 mA cm–2). Also, the fabricated, mechanically strong quasi-solid-state supercapacitor (DqDaTp-CNF SC) delivered an ultrahigh device capacitance of 167 mF cm–2 at 0.5 mA cm–2. Furthermore, we integrated a monolithic photovoltaic self-charging power pack by assembling DqDaTp-CNF SC with a perovskite solar cell. The fabricated self-charging power pack delivered excellent performance in the areal capacitance (42 mF cm–2) at 0.25 mA cm–2 after photocharging for 300 s.

1 aMohammed, Abdul, Khayum1 aVijayakumar, Vidyanand1 aHalder, Arjun1 aGhosh, Meena1 aAddicoat, Matthew1 aBansode, Umesh1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/weak-intermolecular-interactions-covalent-organic-framework-carbon-nanofiber-based06784nas a2200205 4500008004100000245010500041210006900146260000800215520603400223100002806257700001706285700002706302700001806329700002006347700001806367700002206385700002406407700002006431856012706451 2019 eng d00aZinc ion interactions in a two-dimensional covalent organic framework based aqueous zinc ion battery0 aZinc ion interactions in a twodimensional covalent organic frame cAUG3 a

The two-dimensional structural features of covalent organic frameworks (COFs) can promote the electrochemical storage of cations like H+, Li+, and Na+ through both faradaic and non-faradaic processes. However, the electrochemical storage of cations like Zn2+ ion is still unexplored although it bears a promising divalent charge. Herein, for the first time, we have utilized hydroquinone linked β-ketoenamine COF acting as a Zn2+ anchor in an aqueous rechargeable zinc ion battery. The charge-storage mechanism comprises of an efficient reversible interlayer interaction of Zn2+ ions with the functional moieties in the adjacent layers of COF (−182.0 kcal mol−1). Notably, due to the well-defined nanopores and structural organization, a constructed full cell, displays a discharge capacity as high as 276 mA h g−1 at a current rate of 125 mA g−1.

1 aMohammed, Abdul, Khayum1 aGhosh, Meena1 aVijayakumar, Vidyanand1 aHalder, Arjun1 aNurhuda, Maryam1 aKumar, Sushil1 aAddicoat, Matthew1 aKurungot, Sreekumar1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/zinc-ion-interactions-two-dimensional-covalent-organic-framework-based-aqueous-zinc-ion02436nas a2200241 4500008004100000022001400041245015800055210006900213260000900282300001400291490000800305520154300313100002801856700002301884700002701907700001901934700001801953700002201971700002201993700003202015700002002047856012702067 2020 eng d a0002-786300aConnecting microscopic structures, mesoscale assemblies, and macroscopic architectures in 3D-printed hierarchical porous covalent organic framework foams0 aConnecting microscopic structures mesoscale assemblies and macro cMAY  a8252-82610 v1423 a

The induction of macro and mesopores into two-dimensional porous covalent organic frameworks (COFs) could enhance the exposure of the intrinsic micropores toward the pollutant environment, thereby, improving the performance. However, the challenge is to build a continuous hierarchically porous macro-architecture of crystalline organic materials in the bulk scale. In this regard, we have strategized a novel synthetic method to create hierarchically porous COF foams consisting of ordered micropores (2-2.2 nm) and disordered meso and macropores (50 nm to 200 mu m) as well as ordered macropores (1.5 mm to 2 cm). Herein, graphene oxide was used for creating disordered macro and mesopores in COF-GO foams. Considering the rheological features of the precursor hydrogel, we could integrate crystalline and porous COF-GO foams into self-supported three-dimensional (3D)-printed objects with the desired shapes and sizes. Therefore, we have engineered the 3D macro-architecture of COF-GO foams into complex geometries keeping their structural order and continuous porosity intact over a range of more than a million (10(-9) m to 10(-3) m). The interconnected 3D openings in these COF-GO foams further enhance the rapid and efficient uptake of organic and inorganic pollutants from water (>95% removal within 30 s). The abundant distribution of interconnected macroporous volume (55%) throughout the COF-GO foam matrix enhances the flow of water (1.13 x 10(-3) m.s(-1)) which results in efficient mass transport and adsorption.

1 aMohammed, Abdul, Khayum1 aUsgaonkar, Saurabh1 aKanheerampockil, Fayis1 aKarak, Suvendu1 aHalder, Arjun1 aTharkar, Minakshi1 aAddicoat, Matthew1 aAjithkumar, Thalasseril, G.1 aBanerjee, Rahul uhttps://library.ncl.res.in/content/connecting-microscopic-structures-mesoscale-assemblies-and-macroscopic-architectures-3d01911nas a2200301 4500008004100000022001400041245007100055210006900126260000900195490000700204520095100211653002301162653001801185653002401203653003801227653002601265653002401291100002801315700001601343700002401359700002601383700001601409700001901425700001601444700002401460700001901484856010601503 2023 eng d a1433-785100aChemically gradient hydrogen-bonded organic framework crystal film0 aChemically gradient hydrogenbonded organic framework crystal fil cJUL 0 v623 a

Hydrogen-bonded organic frameworks (HOFs) are ordered supramolecular solid structures, however, nothing much explored as centimetre-scale self-standing films. The fabrication of such crystals comprising self-supported films is challenging due to the limited flexibility and interaction of the crystals, and therefore studies on two-dimensional macrostructures of HOFs are limited to external supports. Herein, we introduce a novel chemical gradient strategy to fabricate a crystal-deposited HOF film on an in situ-formed covalent organic polymer film (Tam-Bdca-CGHOF). The fabricated film showed versatility in chemical bonding along its thickness from covalent to hydrogen-bonded network. The kinetic-controlled Tam-Bdca-CGHOF showed enhanced proton conductivity (8.3x10(-5) S cm(-1)) compared to its rapid kinetic analogue, Tam-Bdca-COP (2.1x10(-5) S cm(-1)), which signifies the advantage of bonding-engineering in the same system.

10aChemical Gradience10aCrystal Films10aFree-Standing Films10ahydrogen-bonded organic framework10aInterfacial Chemistry10aproton conductivity1 aMohammed, Abdul, Khayum1 aRaya, Jesus1 aPandikassala, Ajmal1 aAddicoat, Matthew, A.1 aGaber, Safa1 aAslam, Mohamed1 aAli, Liaqat1 aKurungot, Sreekumar1 aShetty, Dinesh uhttps://library.ncl.res.in/content/chemically-gradient-hydrogen-bonded-organic-framework-crystal-film01230nas a2200253 4500008004100000022001400041245008600055210006900141260000900210300001400219490000700233520038600240100002800626700002400654700002400678700001600702700002500718700001900743700003000762700002400792700002000816700001900836856012100855 2023 eng d a1359-734500aSalicylaldehydate coordinated two-dimensional-conjugated metal-organic frameworks0 aSalicylaldehydate coordinated twodimensionalconjugated metalorga cFEB  a2608-26110 v593 a

A novel class of copper-based 2D-c-MOF was synthesized from 1,3,5-triformylphloroglucinol using green mechano-chemistry. Herein, metal coordination with the salicylaldehyde functional moiety was explored for the first time in MOFs. Moreover, an intrinsic semiconductive copper-based SA-MOF thin film was fabricated using an in situ salt-free method at room temperature.

1 aMohammed, Abdul, Khayum1 aPena-Sanchez, Pilar1 aPandikassala, Ajmal1 aGaber, Safa1 aAlKhoori, Ayesha, A.1 aSkorjanc, Tina1 aPolychronopoulou, Kyriaki1 aKurungot, Sreekumar1 aGandara, Felipe1 aShetty, Dinesh uhttps://library.ncl.res.in/content/salicylaldehydate-coordinated-two-dimensional-conjugated-metal-organic-frameworks00991nas a2200301 4500008004100000022001400041245009900055210006900154260000900223490000800232653001100240653001700251653003000268653001600298653001100314100002800325700002400353700002500377700002600402700002100428700001800449700001700467700001200484700002000496700002400516700001900540856013000559 2024 eng d a1385-894700aIron salicylaldehydate conjugated metal-organic framework for quasi solid-state supercapacitor0 aIron salicylaldehydate conjugated metalorganic framework for qua cSEP 0 v49610aCarbon10aconductivity10aELECTROLYTE CONCENTRATION10aperformance10aROBUST1 aMohammed, Abdul, Khayum1 aPandikassala, Ajmal1 aSanchez, Pilar, Pena1 aGaber, Safa, Abdullah1 aCanossa, Stefano1 aKurian, Maria1 aXavier, Gigi1 aHe, Yao1 aGandara, Felipe1 aKurungot, Sreekumar1 aShetty, Dinesh uhttps://library.ncl.res.in/content/iron-salicylaldehydate-conjugated-metal-organic-framework-quasi-solid-state-supercapacitor00967nas a2200265 4500008004100000022001400041245012000055210006900175260000900244490000700253653001900260653001900279653002400298653002800322653002300350100001600373700002800389700003400417700002800451700002500479700002000504700003000524700001900554856012800573 2024 eng d a1433-785100aMOFite: a high-density lithiophilic and scalable metal-organic framework anode for rechargeable lithium-ion battery0 aMOFite a highdensity lithiophilic and scalable metalorganic fram cOCT 0 v6310aconjugated MOF10aEnergy storage10alithium ion battery10aMetal-organic framework10ascalable synthesis1 aGaber, Safa1 aMohammed, Abdul, Khayum1 aJavaregowda, Bharathkumar, H.1 aMartinez, Jose, Ignacio1 aSanchez, Pilar, Pena1 aGandara, Felipe1 aKrishnamoorthy, Kothandam1 aShetty, Dinesh uhttps://library.ncl.res.in/content/mofite-high-density-lithiophilic-and-scalable-metal-organic-framework-anode-rechargeable