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Synthesis and Optical Properties of Push–Push–Pull Chromophores Based on Imidazo[5,1,2-cd]indolizines and Naphtho[1′,2′:4,5]imidazo[1,2-a]pyridines
European Journal of Organic Chemistry ( IF 2.5 ) Pub Date : 2017-10-26 04:51:05 , DOI: 10.1002/ejoc.201701109
Ratnava Maitra,Jie-Hong Chen,Ching-Han Hu,Hon Man Lee

New push–push–pull chromophores based on isomeric imidazo[5,1,2-cd]indolizines and naphtho[1,2:4,5]imidazo[1,2-a]pyridines were prepared. In the case of chromophores with strong NMe2 or NPh2 donors, strong intramolecular charge transfer (ICT) occurs leading to fluorescence emission quenching in polar solvents. DFT and TD-DFT calculations offer explanations to the observed photophysical data.

中文翻译:

基于咪唑并[5,1,2-cd]吲哚并萘并[1',2':4,5]咪唑并[1,2-a]吡啶的推挽发色团的合成及光学性质

制备了新的基于咪唑并[5,1,2- cd ]吲哚并萘和萘并[1 ',2 ':4,5]咪唑并[1,2- a ]吡啶的推挽发色团。在具有强NMe 2或NPh 2供体的生色团的情况下,发生强分子内电荷转移(ICT),导致极性溶剂中的荧光发射猝灭。DFT和TD-DFT计算为观察到的光物理数据提供了解释。
更新日期:2017-10-27
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