Characterizing excited-state intramolecular proton transfer in 3-hydroxyflavone with ultrafast transient infrared spectroscopy

被引：0
|
作者：
Winkler, Valerie S. [1 ]
Fournier, Joseph A. [1 ]
机构：
[1] Washington Univ St Louis, One Brookings Dr, St Louis, MO 63130 USA
来源：
CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 85期
基金：
美国国家科学基金会;
关键词：
CHARGE-TRANSFER; HYDROGEN-BONDS; DYNAMICS; ESIPT;
D O I：
10.1039/d4cc03427a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Vibrational dynamics associated with excited-state intramolecular proton transfer in 3-hydroxyflavone and 3-hydroxy-2-(thiophen-2-yl)chromen-4-one are characterized with ultrafast transient infrared spectroscopy. The spectroscopic data reveal rapid (<100 fs) proton transfer dynamics in both species, followed by vibrational relaxation of the tautomer products within a few picoseconds. Coherent coupling of the shared proton to low-frequency modes along the hydrogen bond coordinate are also observed in the ground electronic states.
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页码：12417 / 12420
页数：4
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