- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Quantitative Sequential Photoenergy Conversion Process from Singlet Fission to Intermolecular Two-Electron Transfers Utilizing Tetracene Dimer
摘要： Singlet fission (SF) theoretically enables to perform 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 possibility for intermolecular ET process in diffusion-limited reaction. However, the quantitative two-electron transfer process through SF has yet to be reported. Herein we demonstrated 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 (ΦT = 175 ± 5% and τT = 0.29 ms) resulted in the quantitative two-electron transfer process (ΦET = 173 ± 5%) with Ch in benzonitrile.
关键词： chloranil,photoenergy conversion,tetracene dimer,electron transfer,Singlet fission
更新于2025-09-23 15:21:21
-
An exciting boost for solar cells
摘要： A process called singlet fission has the potential to enhance the efficiency of solar cells. The mechanism has been difficult to implement in such devices, but experiments demonstrate a way forward.
关键词： efficiency,hafnium oxynitride,tetracene,solar cells,silicon solar cells,singlet fission
更新于2025-09-11 14:15:04