Water-soluble and air-stable [2Fe-2S]-metallopolymers: A new class of electrocatalysts for H 2 production via water splitting

Richard S Glass, Dong-Chul Pyun, Dennis L Lichtenberger, William P. Brezinski, Metin Karayilan, Kayla E. Clary, Nicholas G. Pavlopoulos, Dennis H. Evans

Research output: Contribution to journalArticle

Abstract

[2Fe–2S] organometallic complexes are effective electrocatalysts for the reduction of weak acids in acetonitrile to generate molecular hydrogen (H 2 ) (hydrogen evolution reaction, HER). Incorporation of such a [2Fe–2S] catalytic site into metallopolymers has been achieved using atom transfer radical polymerization (ATRP). These well-defined polymers have been structurally characterized by SEC, 1 H NMR and IR spectroscopy. These metallopolymers catalyze the electrochemical reduction of acetic acid in acetonitrile. In addition, [2Fe–2S] metallopolymers appended with amino groups were shown to be water-soluble and potent electrocatalysts for H 2 production at pH 7. In addition to the exceptional activity of these [2Fe–2S] metallopolymers in water, these catalysts maintain catalytic activity in air unlike comparable molecular catalysts.

Original languageEnglish (US)
JournalPhosphorus, Sulfur and Silicon and the Related Elements
DOIs
StatePublished - Jan 1 2019

Keywords

  • Energy storage
  • hydrogen evolution reaction
  • metallopolymers
  • [FeFe]-hydrogenase

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry
  • Inorganic Chemistry

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