Twisted intramolecular charge transfer (TICT) and twists beyond TICT: from mechanisms to rational designs of bright and sensitive fluorophores,Chemical Society Reviews

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Twisted intramolecular charge transfer (TICT) and twists beyond TICT: from mechanisms to rational designs of bright and sensitive fluorophores
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2021-10-11 , DOI: 10.1039/d1cs00239b
Chao Wang _{1,

2} , Weijie Chi ₂ , Qinglong Qiao ₁ , Davin Tan ₂ , Zhaochao Xu ₁ , Xiaogang Liu ₂

Affiliation

The twisted intramolecular charge transfer (TICT) mechanism has guided the development of numerous bright and sensitive fluorophores. This review briefly overviews the history of establishing the TICT mechanism, and systematically summarizes the molecular design strategies in modulating the TICT tendency of various organic fluorophores towards different applications, along with key milestone studies and representative examples. Additionally, we also succinctly review the twisted intramolecular charge shuttle (TICS) and twists during photoinduced electron transfer (PET), and compare their similarities and differences with TICT, with emphasis on understanding the structure–property relationships between the twisted geometries and how they can directly affect the fluorescence of the molecules. Such structure–property relationships presented herein will greatly aid the rational development of fluorophores that involve molecular twisting in the excited state.

中文翻译：

扭曲的分子内电荷转移 (TICT) 和超越 TICT 的扭曲：从机制到明亮敏感荧光团的合理设计

扭曲的分子内电荷转移 (TICT) 机制引导了许多明亮且灵敏的荧光团的发展。本综述简要概述了 TICT 机制建立的历史，并系统总结了调节各种有机荧光团向不同应用的 TICT 趋势的分子设计策略，以及关键的里程碑研究和代表性实例。此外，我们还简要回顾了扭曲的分子内电荷穿梭 (TICS) 和光致电子转移 (PET) 过程中的扭曲，并比较了它们与 TICT 的异同，重点了解扭曲几何之间的结构-性质关系以及它们如何直接影响分子的荧光。

更新日期：2021-10-12

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