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	Different types of hydrogen-bonded complexes would accelerate or delay the excited state proton transfer in 3-hydroxyflavone
	Yang, Songqiu; Zhang, Yan; Han, Keli
刊名	Journal of luminescence
	2019-02-01
卷号	206页码:46-52
关键词	Excited state proton transfer Hydrogen-bonded complex Time-resolved spectroscopy Cam-b3lyp Dual emission
ISSN号	0022-2313
DOI	10.1016/j.jlumin.2018.10.024
通讯作者	Han, keli(klhan@dicp.ac.cn)
英文摘要	3-hydroxyflavone (3hf) has been found dual emission in polar and protic solvents for many years. the excited state proton transfer (espt) is the key to control the dual emissions of 3hf. we found the espt rate of 3hf in hexane is faster than in acetonitrile because of the lower espt energy barrier in hexane. hence, it was found there are two espt rates in methanol, one is faster than in hexane, and the other is slower than in acetonitrile. two solvent-solute hydrogen bonded complexes (i and ii) response to the two espt rates. the energy barrier of espt was found the lowest (1.324 kcal/mol) in complex i, corresponded to the shortest espt time constant (< 0.09 ps). in complex ii, the espt time constant is the longest (21.97 ps) with the highest espt energy barrier (3.865 kcal/mol). comparing the results of two complexes, we found that intermolecular hydrogen-bonds would accelerate or delay the espt of 3hf based on their different types.
WOS关键词	TRANSFER KINETICS ; LUMINESCENT PROPERTIES ; TRANSFER DYNAMICS ; GROUND-STATE ; FLUORESCENCE ; RELAXATION ; ESIPT ; SPECTROSCOPY ; SPECTRA ; POLAR
WOS研究方向	Optics
WOS类目	Optics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000451782900011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373042
专题	大连化学物理研究所
通讯作者	Han, Keli
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Zhongshan Rd 457, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Yang, Songqiu,Zhang, Yan,Han, Keli. Different types of hydrogen-bonded complexes would accelerate or delay the excited state proton transfer in 3-hydroxyflavone[J]. Journal of luminescence,2019,206:46-52.
APA	Yang, Songqiu,Zhang, Yan,&Han, Keli.(2019).Different types of hydrogen-bonded complexes would accelerate or delay the excited state proton transfer in 3-hydroxyflavone.Journal of luminescence,206,46-52.
MLA	Yang, Songqiu,et al."Different types of hydrogen-bonded complexes would accelerate or delay the excited state proton transfer in 3-hydroxyflavone".Journal of luminescence 206(2019):46-52.

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