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A Million Turnover Molecular Anode for Catalytic Water Oxidation.

A Million Turnover Molecular Anode for Catalytic Water Oxidation.

Authors :
Creus J
Matheu R
Peñafiel I
Moonshiram D
Blondeau P
Benet-Buchholz J
García-Antón J
Sala X
Godard C
Llobet A
Source :
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2016 Dec 05; Vol. 55 (49), pp. 15382-15386. Date of Electronic Publication: 2016 Nov 07.
Publication Year :
2016

Abstract

Molecular ruthenium-based water oxidation catalyst precursors of general formula [Ru(tda)(L <superscript>i</superscript> ) <subscript>2</subscript> ] (tda <superscript>2-</superscript> is [2,2':6',2''-terpyridine]-6,6''-dicarboxylato; L <superscript>1</superscript> =4-(pyren-1-yl)-N-(pyridin-4-ylmethyl)butanamide, 1 b; L <superscript>2</superscript> =4-(pyren-1-yl)pyridine), 1 c), have been prepared and thoroughly characterized. Both complexes contain a pyrene group allowing ready and efficiently anchoring via π interactions on multi-walled carbon nanotubes (MWCNT). These hybrid solid state materials are exceptionally stable molecular water-oxidation anodes capable of carrying out more than a million turnover numbers (TNs) at pH 7 with an E <subscript>app</subscript> =1.45 V vs. NHE without any sign of degradation. XAS spectroscopy analysis before, during, and after catalysis together with electrochemical techniques allow their unprecedented oxidative ruggedness to be monitored and verified.<br /> (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Details

Language :
English
ISSN :
1521-3773
Volume :
55
Issue :
49
Database :
MEDLINE
Journal :
Angewandte Chemie (International ed. in English)
Publication Type :
Academic Journal
Accession number :
27897422
Full Text :
https://doi.org/10.1002/anie.201609167