Understanding Photoinduced Symmetry Breaking Charge Separation

被引：0

作者：

Wega, Johannes ^{[1
]}

机构：

[1] Univ Geneva, Dept Phys Chem, Quai Ansermet 30, CH-1211 Geneva 4, Switzerland

来源：

CHIMIA | 2025年 / 79卷 / 04期

关键词：

Electron transfer; Excimer; Interchromophore coupling; Photochemistry; Transient absorption spectroscopy; ELECTRON-TRANSFER; EXCITED-STATE; TRANSIENT ABSORPTION; PERYLENE; PYRENE; ENERGY;

D O I：

10.2533/chimia.2025.263

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Symmetry-breaking charge separation (SB-CS) is a photoinduced electron transfer reaction in which the chromophore acts as both the acceptor and the donor. This reaction which is still poorly understood may enable long-lived charge separation interesting for many applications. Here we show that SB-CS can be realised bimolecularly with perylene and discuss the factors favouring it. Furthermore, using a pyrene bichromophoric system, we discuss the influence of interchromophore coupling and how the photophysics can be fine-tuned to yield SB-CS over other processes such as excimer formation.

引用

页码：263 / 266

页数：4

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