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