期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 26, 页码 8184-8193出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b03774
关键词
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资金
- AFOSR through a Basic Research Initiative (BRI) [FA9550-12-1-0414]
- NSF
The use of hydrogen-bonding interactions to direct the noncovalent assembly of a Re-based bimetallic supramolecular electrocatalyst containing either tyrosine or phenylalanine residues is reported. Computational modeling and spectroelectrochemical characterization indicate that under catalytic conditions the phenol residues of tyrosine can act both as pendant proton sources and participate in the structural assembly of the bimetallic active species. As a result, an increased rate of catalysis is observed experimentally for the reductive disproportionation of CO2 to CO and CO32- by a tyrosine modified complex in comparison to a control complex containing phenylalanine residues. These findings demonstrate that noncovalent assembly is a powerful method for generating new bimetallic electrocatalyst systems where the choice of substituent can be used to both control structural assembly and introduce cocatalytic moieties.
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