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Absorption and fluorescence spectral properties of donor-acceptor ethenes bearing indole and p-nitrophenyl substituents

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Title Absorption and fluorescence spectral properties of donor-acceptor ethenes bearing indole and p-nitrophenyl substituents
 
Creator SINGH, AK
HOTA, PK
 
Subject conformationally relaxed intramolecular charge transfer
excited state
indole
donor-acceptor
synthesis
absorption
fluorescence
intramolecular charge-transfer
excited-state
multidimensional photochemistry
dual fluorescence
quantum yields
stilbenes
photophysics
derivatives
relaxation
dynamics
 
Description Synthesis, absorption and fluorescence properties (lambda(f), lambda(ex), Stokes shifts, Phi(f), tau(f), correlation plots of Delta(f) and E-T(30) with Phi(f) and Stokes shifts, Delta mu(f), low temperature fluorescence properties and excited state geometry) of 3-(4-nitrophenyl ethenyl-E)-NH-indole (1) and 3-(4-nitrophenyl ethenyl-E)-N-acetyl indole (2) are described. Occurrence of singlet excited state torsional motions and presence of more than one excited species, which are significantly influenced by the solvent polarity, have been observed. It is suggested that while I fluoresces predominantly from the conformationally relaxed intramolecular charge transfer (CRICT) state, 2 fluoresces from three different types of excited species, including the locally excited state, intramolecular charge transfer excited state and the CRICT state.
 
Publisher VSP BV
 
Date 2011-10-12T13:16:16Z
2011-12-15T09:16:08Z
2011-10-12T13:16:16Z
2011-12-15T09:16:08Z
2005
 
Type Review
 
Identifier RESEARCH ON CHEMICAL INTERMEDIATES,31,85-101
0922-6168
http://dx.doi.org/10.1163/1568567053146832
http://dspace.library.iitb.ac.in/xmlui/handle/10054/13780
http://hdl.handle.net/100/3017
 
Language en