Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/67318
Type: Artigo de periódico
Title: FLUORESCENCE AND TOPOLOGICAL GAP OF CONJUGATED PHENYLENE POLYMERS
Author: SOOS, ZG
ETEMAD, S
GALVAO, DS
RAMASESHA, S
Abstract: We propose that strong fluorescence in conjugated polymers requires a dipole-allowed state to be the lowest singlet. Huckel theory for para-conjugated phenyl rings yields an extended, topologically one-dimensional pi-system with increased alternation, states localized on each ring, and charge-transfer excitations between them. Exact Pariser-Parr-Pople results and molecular spectra for oligomers support a topological contribution and a lowest dipole-allowed singlet in phenylene polymers.
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/0009-2614(92)86061-L
Date Issue: 1992
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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