Photophysical properties of octupolar triazatruxene-based chromophores

	Photophysical properties of octupolar triazatruxene-based chromophores
	He, Guiying 1; Shao, Jinjun 2; Li, Yang 1; Hu, Jiangpu 1; Zhu, Huaning 1; Wang, Xian 1; Guo, Qianjin 1; Chi, Chunyan 2; Xia, Andong 1
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2016-03-07
卷号	18 期号:9 页码:6789-6798
英文摘要	The photophysical properties of three octupolar chromophores containing planar triazatruxene (TAT) as the central electron donor with different electron-withdrawing groups in the tribranched arrangement have been systematically investigated by means of steady state and transient spectroscopy. The multidimensional intramolecular charge transfer (ICT) properties of these tribranched chromophores related to the observed two-photon absorption (TPA) properties are explored by estimating the TPA essential factors (M-ge and Delta mu(ge)). Besides the large Stokes shift between steady state absorption and fluorescence spectra in different polar solvents, photoinduced ICT was further demonstrated by quantum-chemical calculations and transient absorption measurements. Both quantum calculations and spectral experiments show that a multidimensional ICT occurs from the electron-rich core to the electron-deficient periphery of these TAT derivatives. The results of solvation effects and the dynamics of the excited states show that the excited states of these three chromophores tend to exhibit an excitation localization on one of the dipolar branches, which is beneficial to achieve large Mge and Dmge, thus leading to enhanced TPA properties.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35861]
专题	化学研究所_光化学实验室
作者单位	1.Chinese Acad Sci, Key Lab Photochem, Inst Chem, BNLMS, Beijing 100190, Peoples R China 2.Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore
推荐引用方式 GB/T 7714	He, Guiying,Shao, Jinjun,Li, Yang,et al. Photophysical properties of octupolar triazatruxene-based chromophores[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2016,18(9):6789-6798.
APA	He, Guiying.,Shao, Jinjun.,Li, Yang.,Hu, Jiangpu.,Zhu, Huaning.,...&Xia, Andong.(2016).Photophysical properties of octupolar triazatruxene-based chromophores.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,18(9),6789-6798.
MLA	He, Guiying,et al."Photophysical properties of octupolar triazatruxene-based chromophores".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 18.9(2016):6789-6798.