00639nas a2200181   4500008004100000022001400041245008200055210006900137260000800206300001000214490000700224653003200231653002100263653002100284100002100305700002000326856011100346       2014                        eng d  a2053-273300aTandem catalysis by in-situ generated microporous COF-Pd nanoparticle hybrids0 aTandem catalysis by insitu generated microporous COFPd nanoparti  cMAR  aC10340 v7010acovalent organic frameworks10aPd nanoparticles10atandem catalysis1 aBhadra, Mohitosh1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/tandem-catalysis-situ-generated-microporous-cof-pd-nanoparticle-hybrids01987nas a2200253   4500008004100000022001400041245010200055210006900157260011000226300001400336490000600350520102900356100002901385700003101414700002101445700002301466700001901489700002401508700001801532700001701550700002401567700002001591856012201611       2016                        eng d  a2050-748800aMechanochemically synthesized covalent organic framework as a proton-conducting solid electrolyte0 aMechanochemically synthesized covalent organic framework as a pr  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a2682-26900 v43 a<p>Mechanochemistry has become an increasingly important synthetic tool for a waste-free environment. However, the poor quality of the so-derived materials in terms of their crystallinity and porosity has been their major drawback for any practical applications. In this report, we have for the first time successfully leveraged such characteristics to show that the mechanochemically synthesized bipyridine based covalent organic framework (COF) outperforms its conventional solvothermal counterpart as an efficient solid-state electrolyte in PEM fuel cells. Marking the first such attempt in COFs, a Membrane Electrode Assembly (MEA) fabricated using the mechanochemically synthesized COF was observed to inhibit the fuel crossover and build up a stable Open Circuit Voltage (OCV = 0.93 V at 50 degrees C), thereby establishing itself as an effective solid electrolyte material (with a proton conductivity of 1.4 x 10(-2) S cm(-1)), while the solvothermally synthesized COF proved ineffective under similar conditions.</p>1 aShinde, Digambar, Balaji1 aAiyappa, Harshitha, Barike1 aBhadra, Mohitosh1 aBiswal, Bishnu, P.1 aWadge, Pritish1 aKandambeth, Sharath1 aGarai, Bikash1 aKundu, Tanay1 aKurungot, Sreekumar1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/mechanochemically-synthesized-covalent-organic-framework-proton-conducting-solid-002009nas a2200217   4500008004100000245017300041210006900214260000800283300001600291490000600307520117200313100002101485700002801506700001701534700002001551700002401571700002101595700002501616700002001641856013001661       2017                        eng d00aPredesigned metal-anchored building block for in situ generation of Pd nanoparticles in porous covalent organic framework: application in heterogeneous tandem catalysis0 aPredesigned metalanchored building block for in situ generation   cAPR  a13785-137920 v93 aThe development of nanoparticle-polymer-hybrid-based heterogeneous catalysts with high reactivity and good recyclability is highly desired for their applications in the chemical and pharmaceutical industries: Herein, we have developed a novel synthetic strategy by choosing a predesigned metal-anchored building block for in situ generation of metal (Pd) nanoparticles in the stable, porous, and crystalline covalent organic framework (COF), without using conventional reducing agents. In situ generation of Pd nanoparticles in the COF Skeleton is explicitly confirmed' from PXRD, XPS, TEM images, and N-15 NMR spectral analysis. This hybrid material is found to be an excellent reusable heterogeneous catalyst for the synthesis of biologically and pharmaceutically important 2-substituted benzofurans from 2-bromophencils and terminal alkynes via a tandem process with the turnover number up to 1101. The heterogeneity of the catalytic process is unambiguously verified by a mercury poisoning experiment and leaching test. This hybrid material shows superior catalytic performance compared to commercially available homogeneous as well as heterogeneous Pd catalysts.1 aBhadra, Mohitosh1 aSasmal, Himadri, Sekhar1 aBasu, Arghya1 aMidya, Siba, P.1 aKandambeth, Sharath1 aPachfule, Pradip1 aBalaraman, Ekambaram1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/predesigned-metal-anchored-building-block-situ-generation-pd-nanoparticles-porous-covalent02283nas a2200229   4500008004100000245009200041210006900133260000800202300001600210490000700226520149400233100002201727700002701749700001901776700002401795700002101819700002101840700002401861700002401885700002001909856012401929       2018                        eng d00aConvergent covalent organic framework thin sheets as flexible supercapacitor electrodes0 aConvergent covalent organic framework thin sheets as flexible su  cAUG  a28139-281460 v103 aFlexible supercapacitors in modern electronic equipment require light-weight electrodes, which have a high surface area, precisely integrated redox moieties, and mechanically strong flexible free-standing nature. However, the incorporation of the aforementioned properties into a single electrode remains a great task. Herein, we could overcome these challenges by a facile and scalable synthesis of the convergent covalent organic framework (COF) free-standing flexible thin sheets through solid-state molecular baking strategy. Here, redox-active anthraquinone (Dq) and pi-electron-rich anthracene (Da) are judiciously selected as two different linkers in a beta-ketoenamine-linked two-dimensional (2D) COF. As a result of precisely integrated anthraquinone moieties, COF thin sheet exhibits redox activity. Meanwhile, pi-electron-rich anthracene linker assists to improve the mechanical property of the free-standing thin sheet through the enhancement of noncovalent interaction between crystallites. This binder-free strategy offers the togetherness of crystallinity and flexibility in 2D COF thin sheets. Also, the synthesized porous crystalline convergent COF thin sheets are benefited with crack-free uniform surface and light-weight nature. Further, to demonstrate the practical utility of the material as an electrode in energy-storage systems, we fabricated a solid-state symmetrical flexible COF supercapacitor device using a GRAFOIL peeled carbon tape as the current collector.1 aKhayum, Abdul, M.1 aVijayakumar, Vidyanand1 aKarak, Suvendu1 aKandambeth, Sharath1 aBhadra, Mohitosh1 aSuresh, Karthika1 aAcharambath, Nikhil1 aKurungot, Sreekumar1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/convergent-covalent-organic-framework-thin-sheets-flexible-supercapacitor-electrodes01493nas a2200205   4500008004100000022001400041245011700055210006900172260000900241300001400250490000800264520075900272100002101031700002401052700002101076700002201097700002501119700002001144856012301164       2019                        eng d  a0002-786300aTriazine functionalized porous covalent organic framework for photo-organocatalytic E-Z isomerization of olefins0 aTriazine functionalized porous covalent organic framework for ph  cAPR   a6152-61560 v1413 a<p>Visible light-mediated photocatalytic organic transformation has drawn significant attention as an alternative process for replacing thermal reactions. Although precious metal/organic dyes based homogeneous photocatalysts have been developed, their toxic and nonreusable nature makes them inappropriate for large-scale production. Therefore, we have synthesized a triazine and a keto functionalized nonmetal based covalent organic framework (TpTt) for heterogeneous photo catalysis. As the catalyst shows significant absorption of visible light, it has been applied for the photocatalytic uphill conversion of trans-stilbene to cis-stilbene in the presence of blue light-emitting diodes with broad substrate scope via an energy transfer process.</p>
1 aBhadra, Mohitosh1 aKandambeth, Sharath1 aSahoo, Manoj, K.1 aAddicoat, Matthew1 aBalaraman, Ekambaram1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/triazine-functionalized-porous-covalent-organic-framework-photo-organocatalytic-e-z