Dibenzo[b,f][1,4,5]chalcogenadiazepine Photoswitches: Conversion of Excitation Energy into Ring Strain,Angewandte Chemie International Edition

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Dibenzo[b,f][1,4,5]chalcogenadiazepine Photoswitches: Conversion of Excitation Energy into Ring Strain
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2022-08-24 , DOI: 10.1002/anie.202209441
Xin Shen ₁ , Cefei Zhang ₁ , Fengying Lan ₁ , Zhishan Su ₁ , Yuanqin Zheng ₁ , Tingting Zheng ₁ , Qin Xiong ₁ , Xinyu Xie ₁ , Guangxi Du ₁ , Xiaohu Zhao ₁ , Changwei Hu ₁ , Pengchi Deng ₂ , Zhipeng Yu ₁

Affiliation

Chalcogen-bridged seven-membered cyclic azobenzenes, dibenzo[b,f][1,4,5]chalcogenadiazepine (DBChD), exhibit distinct photo-switching characters with a high-energy E-configuration, especially for sulfur-bridged DBTD with an energy transduction efficiency of 21 % (η) under 445 nm laser activation. Introducing oligothiophene π-EDG on DBTD could further elevate the absorption λ_max and coefficient ϵ, reaching η=29 %.

中文翻译：

Dibenzo[b,f][1,4,5]chalcogenadiazepine Photoswitches：激发能量转化为环应变

硫属元素桥接的七元环状偶氮苯二苯并[ b , f ][1,4,5]硫属二氮杂卓 (DBChD) 具有高能 E 构型的独特光开关特性，特别是对于具有高能 E 构型的硫桥接 DBTD在 445 nm 激光激活下，能量转换效率为 21% (η)。在 DBTD 上引入低聚噻吩 π-EDG 可以进一步提高吸收 λ _max和系数 ϵ，达到 η=29 %。

更新日期：2022-08-24

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