Pd loaded amphiphilic COF as catalyst for multi-fold Heck reactions, C-C couplings and CO oxidation

TitlePd loaded amphiphilic COF as catalyst for multi-fold Heck reactions, C-C couplings and CO oxidation
Publication TypeJournal Article
Year of Publication2015
AuthorsMullangi, D, Nandi, S, Shalini, S, Sreedhala, S, Vinod, CP, Vaidhyanathan, R
JournalScientific Reports
Volume5
Pagination10876
Date PublishedJUN
Type of ArticleArticle
ISSN2045-2322
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.

DOI10.1038/srep10876
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

5.228

Divison category: 
Catalysis and Inorganic Chemistry