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Frontispiece: Cobalt Phenanthroline–Indole Macrocycles as Highly Active Electrocatalysts for Oxygen Reduction
Author(s) -
Quernheim Martin,
Liang Haiwei,
Su Qi,
Baumgarten Martin,
Koshino Nobuyoshi,
Higashimura Hideyuki,
Müllen Klaus
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201484461
Subject(s) - phenanthroline , cobalt , oxygen reduction , indole test , chemistry , electrochemistry , catalysis , methanol , platinum , oxygen , combinatorial chemistry , ligand (biochemistry) , metal , oxygen reduction reaction , electrocatalyst , inorganic chemistry , photochemistry , stereochemistry , organic chemistry , receptor , electrode , biochemistry
Cobalt Electrocatalysts A series of novel mono‐ and binuclear Co‐N 4 complexes, based on a new phenanthroline–indole macrocyclic ligand, were synthesized. It was demonstrated that these complexes support the direct four‐electron reduction of oxygen to water. Furthermore, electrochemical measurements revealed high electrocatalytic activities, methanol resistance, and a superior long‐term stability for the oxygen‐reduction reaction (ORR) under alkaline conditions. Thus, these structurally well‐defined non‐precious metal complexes represent an alternative to platinum‐based catalysts in fuel‐cell applications. For more details, see the Communication on page 14178 by K. Müllen and co‐workers.