Intramolecular charge transfer and exciplex formation in anthracene bichromophoric compounds

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	Intramolecular charge transfer and exciplex formation in anthracene bichromophoric compounds
	Wang, H; Zhang, BW; Cao, Y
刊名	JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
	1995-12-06
卷号	92 期号:1-2 页码:29-34
关键词	Intramolecular Charge Transfer Exciplex Formation Anthracene Bichromophoric Compounds
ISSN号	1010-6030
英文摘要	A binary compound containing strong electron donor and acceptor groups, (N,N-dimethylanilino)-CH2-9-cyanoanthracene (II), was synthesized, and its photophysical behaviour was studied. Intramolecular exciplex emission was observed in non-polar and moderately polar solvents, but not in polar solvents. Exciplex formation in non-polar and moderately polar solvents accounts for the exothermic electron transfer reaction and/or the efficient coupling of the amine lone pair with 9-cyanoanthracene pi orbitals; in polar solvents, the molecular structure corresponds to a solvent-separated radical ion pair formed by intermolecular electron transfer, where the energy is dissipated via back electron transfer (BET) without fluorescence emission. A new, blue-shifted emission at 510 nm appears in the region of the local emission band for compound II at 77 K, which may originate from a ground state, charge transfer (CT) conformer. The dependence of exciplex formation on the solvent and temperature is discussed by comparison with the compound (N,N-dimethylanilino)-CH2-anthracene (I), and a simplified energy diagram showing intramolecular charge transfer and exciplex formation in compounds I and II is described.
语种	英语
出版者	ELSEVIER SCIENCE SA LAUSANNE
WOS记录号	WOS:A1995TK77100007
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/44193]
专题	中国科学院化学研究所
作者单位	CHINESE ACAD SCI,INST PHOTOG CHEM,PHOTOCHEM LAB,BEIJING 100101,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Wang, H,Zhang, BW,Cao, Y. Intramolecular charge transfer and exciplex formation in anthracene bichromophoric compounds[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,1995,92(1-2):29-34.
APA	Wang, H,Zhang, BW,&Cao, Y.(1995).Intramolecular charge transfer and exciplex formation in anthracene bichromophoric compounds.JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY,92(1-2),29-34.
MLA	Wang, H,et al."Intramolecular charge transfer and exciplex formation in anthracene bichromophoric compounds".JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 92.1-2(1995):29-34.