Tactfully unveiling the effect of solvent polarity on the ESIPT mechanism and photophysical property of the 3-hydroxylflavone derivative

Changjiao Shang,Yunjian Cao, Zhuqi Shao,Chaofan Sun,Yuanzuo Li

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy（2022）

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摘要

•Intramolecular hydrogen bond is weakened as the solvent polarity increased.•Intramolecular charge transfer has triggered ESIPT reaction of 3HF-OH.•ESIPT process of 3HF-OH is inclined to proceed in the weak-polar solvent.•Molecular configuration torsion of 3HF-OH inhibits the ESIPT behavior.

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关键词

Excited-state intramolecular proton transfer,Solvatochromic effect,Potential energy curves,Intramolecular hydrogen bond,Photophysical property

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