Electrocatalytic water oxidation by Cu(II) complexes with branched peptides

Chem Commun (Camb). 2015 Apr 14;51(29):6322-4. doi: 10.1039/c5cc00926j.

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 pKa for Cu(III)H-2L (9.36 vs. 9.98) and improves the TOF at pH 11 (53 vs. 24 s(-1)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Copper / chemistry*
  • Electrochemistry
  • Organometallic Compounds / chemistry*
  • Oxidation-Reduction
  • Peptides / chemistry*
  • Water / chemistry*

Substances

  • Organometallic Compounds
  • Peptides
  • Water
  • Copper