Electronic effect on the photophysical properties of 2-(2-hydroxyphenyl)benzothiazole-based excited state intramolecular proton transfer fluorophores synthesized by sonogashira-coupling reaction

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Electronic effect on the photophysical properties of 2-(2-hydroxyphenyl)benzothiazole-based excited state intramolecular proton transfer fluorophores synthesized by sonogashira-coupling reaction

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作者：Longfei Xu ; Qin Wang ; Yanrong Zhang ; ^{zhangyr@nwsuaf.edu.cn" class="auth_mail" title="E-mail the corresponding author}
关键词：Hammett substituent constant ; Solvent effects ; Theoretical calculation ; Excited state intramolecular proton transfer ; Crystal analysis ; Sonogashira crossing-coupling reaction
刊名：Dyes and Pigments
出版年：2017
出版时间：January 2017
年：2017
卷：136
期：Complete
页码：732-741
全文大小：2237 K

文摘

•: ESIPT dyes with different Hammett substituent constants σ were facilely synthesized.
•: ESIPT dye with larger σ shows blue-shifted fluorescence spectra with improved Φ_f.
•: Unlike HBT displaying anion emission in PBS, HBT-CO₂Me and HBT-CN show keto emission.
•: The theoretical calculations are well in line with the experimentally observed trends.
•: Crystal analysis show derivative with larger σ having stronger intramolecular H-bond.