Redox tuning in Pt(bpy)-viologen catalyst-acceptor dyads enabling photocatalytic hydrogen evolution from water

Koichi Yatsuzuka, Kosei Yamauchi, Ken Sakai

研究成果: Contribution to journalArticle査読

抄録

A Pt(ii)-based photo-hydrogen-evolving molecular device tethered to dimethyl-substituted viologens (Pt(bpy)(dmMV2+)2), providing higher driving force for hydrogen evolution reaction (HER) than the non-methylated analogue (Pt(bpy)(MV2+)2), is found to exhibit improved photocatalytic performance. The observed behaviors are explained by the multiple HER pathways taken by evolving H2 by the doubly and triply reduced species generated via consecutive photo-driven steps. Although the activity is still killed by the Dexter-type energy transfer quenching, our results provide new design strategies towards the development of more finely tuned molecular devices controlling the photocatalytic HER.

本文言語英語
ページ(範囲)5183-5186
ページ数4
ジャーナルChemical Communications
57
42
DOI
出版ステータス出版済み - 5 25 2021

All Science Journal Classification (ASJC) codes

  • 触媒
  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 化学 (全般)
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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