Insights into the effect of donor ability on photophysical properties of dihydroindeno[2,1-c]fluorene-based imide derivatives

doi:10.1039/c7cp07985k

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	Insights into the effect of donor ability on photophysical properties of dihydroindeno[2,1-c]fluorene-based imide derivatives
	He, Guiying 1,2; Zhou, Li-Li 2; Song, Hongwei 1,2; Kuang, Zhuoran 1,2; Wang, Xian 1,2; Guo, Qianjin 1; Lu, Hai-Yan 2; Xia, Andong 1,2
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2018-03-21
卷号	20 期号:11 页码:7514-7522
ISSN号	1463-9076
DOI	10.1039/c7cp07985k
英文摘要	The photophysical properties of dihydroindeno[2,1-c]fluorene-based imide (DHIFI) derivatives were investigated by steady-state and time-resolved spectroscopy as well as quantum chemical calculations. The hybridized local excited and charge transfer state (HLCT) was introduced to interpret the intercrossing of localized excited (LE) and charge transfer (CT) states. The large extent of CT in the HLCT state of a molecule with a strong electron donor (dimethylaniline) at the terminal site results in strong interaction between the dipole moments of the excited state and polar solvents. Time-resolved spectroscopy results show the formation of a stabilized ICT state in several picoseconds, which results in fluorescence quenching and less possibility of intersystem crossing to the triplet state. In contrast, a molecule with a weak electron donor (benzene) displays less fluorescence quenching. The slowing down of geometry relaxation in the weak-electron-donor molecule increases the possibility of ISC to the triplet state from the unrelaxed HLCT state.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000428235800016
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45961]
专题	中国科学院化学研究所
通讯作者	Lu, Hai-Yan; Xia, Andong
作者单位	1.Chinese Acad Sci, Key Lab Photochem, Inst Chem, BNLMS, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	He, Guiying,Zhou, Li-Li,Song, Hongwei,et al. Insights into the effect of donor ability on photophysical properties of dihydroindeno[2,1-c]fluorene-based imide derivatives[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2018,20(11):7514-7522.
APA	He, Guiying.,Zhou, Li-Li.,Song, Hongwei.,Kuang, Zhuoran.,Wang, Xian.,...&Xia, Andong.(2018).Insights into the effect of donor ability on photophysical properties of dihydroindeno[2,1-c]fluorene-based imide derivatives.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,20(11),7514-7522.
MLA	He, Guiying,et al."Insights into the effect of donor ability on photophysical properties of dihydroindeno[2,1-c]fluorene-based imide derivatives".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 20.11(2018):7514-7522.