Electrocatalytic water oxidation by CuII complexes with branched peptides

József S. Pap; Łukasz Szyrwiel; Dávid Srankó; Zsolt Kerner; Bartosz Setner; Zbigniew Szewczuk; Wiesław Malinka

doi:10.1039/C5CC00926J

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Electrocatalytic water oxidation by Cu^II complexes with branched peptides†

József S. Pap,*^a Łukasz Szyrwiel,*^bc Dávid Srankó,^a Zsolt Kerner,^a Bartosz Setner,^d Zbigniew Szewczuk^d and Wiesław Malinka^b

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* Corresponding authors

^a Centre for Energy Research, Surface Chemistry and Catalysis Department, P.O. Box 49, H-1525 Budapest 114, Hungary
E-mail: pap.jozsef@energia.mta.hu

^b Department of Chemistry of Drugs, Wrocław Medical University, ul. Borowska 211, 50-552 Wrocław, Poland
E-mail: lukasz.szyrwiel@umed.wroc.pl

^c CNRS/UPPA, LCABIE, UMR5254, Helioparc, 2, av. Pr. Angot, F-64053 Pau, France

^d Faculty of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14, 50–383 Wrocław, Poland

Abstract

Two mononuclear Cu^II complexes with tetrapeptides incorporating a L-2,3-diaminopropionic acid (dap) branching unit are reported to undergo PCET and catalyse water oxidation. C-terminal His extension of dap (L = 2GH) instead of Gly (L = 3G) lowers the pK_a for Cu^IIIH₋₂L (9.36 vs. 9.98) and improves the TOF at pH 11 (53 vs. 24 s⁻¹).

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Article information

DOI: https://doi.org/10.1039/C5CC00926J
Article type: Communication
Submitted: 31 Jan 2015
Accepted: 03 Mar 2015
First published: 03 Mar 2015

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Chem. Commun., 2015,51, 6322-6324

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Electrocatalytic water oxidation by Cu^II complexes with branched peptides

J. S. Pap, Ł. Szyrwiel, D. Srankó, Z. Kerner, B. Setner, Z. Szewczuk and W. Malinka, Chem. Commun., 2015, 51, 6322 DOI: 10.1039/C5CC00926J

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