Excitation Energy-Dependent, Excited-State Intramolecular Proton Transfer-Based Dual Emission in Poor Hydrogen-Bonding Solvents

被引：10

作者：

Hurley, Joseph J. M. ^{[1
]}

Zhu, Lei ^{[1
]}

机构：

[1] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2022年 / 126卷 / 34期

基金：

美国国家科学基金会;

关键词：

SKELETAL DEFORMATIONS; O-HYDROXYBENZALDEHYDE; WHITE-LIGHT; N-OXIDE; FLUORESCENCE; MECHANISM; PHOTOPHYSICS; DYNAMICS; BREAKING; COHERENT;

D O I：

10.1021/acs.jpca.2c03668

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

2-(2'-Hydroxyphenyl)benzoxazole (HBO) substituted at the 5'-position with bipyridylvinylene phenylenevinylene (compound 2) produces both normal and, via an excited-state intramolecular proton transfer (ESIPT) reaction, tautomer emissions in solvents that preserve intramolecular hydrogen bonds. The abundance of the tautomer emission from compound 2 in a poor hydrogen-bonding solvent increases in response to the application of a higher excitation energy. Based on quantum chemical calculations, the excitation-dependent dual emission is consistent with a model in which the ESIPT reaction is more favored in the S-2 than in the S-1 electronically excited state.

引用

页码：5711 / 5720

页数：10

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