Thermally activated delayed fluorescence (TADF) dyes as efficient organic photosensitizers for photocatalytic water reduction

Zhe Jian Yu, Wen Ya Lou, Henrik Junge, Ayla Päpcke, Hao Chen, Liang Min Xia, Bin Xu, Ming Ming Wang, Xiao Jing Wang, Qing An Wu, Bai Yang Lou, Stefan Lochbrunner, Matthias Beller, Shu Ping Luo

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

An efficient water reduction system was developed using thermally activated delayed fluorescence (TADF) dyes as organic photosensitizers and a palladium complex as water reduction catalyst. 2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene (4CzIPN) that has the best fluorescence efficiency displayed the highest photoinduced productivity (TON up to 2567) and was active for 5 days. Based on time-resolved photoluminescence experiments on the photocatalytic system, reductive quenching of the TADF dye was found as main pathway occurring before intersystem crossing takes place.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalCatalysis Communications
Volume119
DOIs
StatePublished - 10 Jan 2019
Externally publishedYes

Keywords

  • Hydrogen
  • Palladium
  • Photosensitizers
  • TADF dyes
  • Water reduction

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