ICCAS OpenIR
Intramolecular exciplex and cation-mediated charge-transfer fluorescence in a podand carrying terminal electron donor and acceptor groups
Jiang, H; Xu, HJ
2001
Source PublicationJOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
ISSN1472-779X
Issue8Pages:1274-1279
AbstractA podand carrying terminal electron donor and acceptor groups (DPA) has been synthesized. There is no intramolecular interaction between the two chromophores in the ground state. Selective excitation of the acceptor moiety, and a very weak and structureless exciplex emission was observed in benzene. In acetonitrile, only quenching of the monomer fluorescence occurred. In the presence of calcium ions conformational modification through complexation with the non-cyclic poly(oxyethylene) chain resulted in the formation of a charge-transfer (CT) complex in the ground state. Selective excitation of the acceptor moiety (380 nm) or at the CT band (340 nm) gave rise to intramolecular excited CT complex emission. The similarity in the fluorescence maxima exhibited by the exciplex and the excited CT complex implies that the electronic structures of their fluorescent states are very similar. The slight difference in the fluorescence quantum yields and decay rate constants between the exciplexand excited CT complex suggests that they have different geometries. Exciplex fluorescence was also observed in gamma -CD, depending on the gamma -CD concentration.
Indexed ByIC ; SCI
Language英语
WOS IDWOS:000170171000003
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/77970
Collection中国科学院化学研究所
Corresponding AuthorXu, HJ
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Photochem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Jiang, H,Xu, HJ. Intramolecular exciplex and cation-mediated charge-transfer fluorescence in a podand carrying terminal electron donor and acceptor groups[J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2,2001(8):1274-1279.
APA Jiang, H,&Xu, HJ.(2001).Intramolecular exciplex and cation-mediated charge-transfer fluorescence in a podand carrying terminal electron donor and acceptor groups.JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2(8),1274-1279.
MLA Jiang, H,et al."Intramolecular exciplex and cation-mediated charge-transfer fluorescence in a podand carrying terminal electron donor and acceptor groups".JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 .8(2001):1274-1279.
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