Quantitative Sequential Photoenergy Conversion Process from Singlet Fission to Intermolecular Two-Electron Transfers Utilizing Tetracene Dimer

Shunta Nakamura, Hayato Sakai, Hiroki Nagashima, Yasuhiro Kobori, Nikolai V. Tkachenko, Taku Hasobe

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Singlet fission (SF) theoretically enables the performance of the sequential photoenergy conversion process starting from the singlet state and leading to electron transfer (ET) with the radical ion pair quantum yield approaching 200%. Additionally, the long lifetime of the triplet state opens the possibility for an intermolecular ET process in a diffusion-limited reaction. However, the quantitative two-electron transfer process through SF has yet to be reported. Herein we demonstrate the quantitative sequential process involving SF and leading to intermolecular two-electron transfers using 2,2′-biphenyl-bridged tetracene dimer (Tet-BP-Tet: SF and electron donor) and chloranil (Ch: electron acceptor). The high-yield and long-lived individual triplet excited states of Tet-BP-Tet by SF (φ T = 175 ± 5% and τ T = 0.29 ms) resulted in the quantitative two-electron transfer process (φ ET = 173 ± 5%) with Ch in benzonitrile.

本文言語English
ページ(範囲)26-31
ページ数6
ジャーナルACS Energy Letters
4
1
DOI
出版ステータスPublished - 2019 1 11

ASJC Scopus subject areas

  • 化学(その他)
  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • エネルギー工学および電力技術
  • 材料化学

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