Pd loaded amphiphilic COF as catalyst for multi-fold Heck reactions, C-C couplings and CO oxidation
Title | Pd loaded amphiphilic COF as catalyst for multi-fold Heck reactions, C-C couplings and CO oxidation |
Publication Type | Journal Article |
Year of Publication | 2015 |
Authors | Mullangi, D, Nandi, S, Shalini, S, Sreedhala, S, Vinod, CP, Vaidhyanathan, R |
Journal | Scientific Reports |
Volume | 5 |
Pagination | 10876 |
Date Published | JUN |
Type of Article | Article |
ISSN | 2045-2322 |
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 `non-boronic acid' 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. |
DOI | 10.1038/srep10876 |
Type of Journal (Indian or Foreign) | Foreign |
Impact Factor (IF) | 5.228 |
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