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Dynamics of photoexcitations with interchain coupling in conjugated polymers
Author(s) -
de Oliveira Neto Pedro Henrique,
da Cunha Wiliam Ferreira,
Gargano Ricardo,
e Silva Geraldo Magela
Publication year - 2008
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.21650
Subject(s) - photoexcitation , chain (unit) , excitation , polyacetylene , conjugated system , coupling (piping) , chemistry , chemical physics , vibronic coupling , polymer , quantum , impurity , molecular physics , physics , atomic physics , excited state , materials science , quantum mechanics , organic chemistry , metallurgy
In this article, we study the photoexcitation dynamics of two coupled trans‐polyacetylene chains. The approach used was an extended version of the Su, Scherieffer, and Heeger model for a pair of interacting chains and impurity. An electron excitation from one fully dimerized chain to another was simulated. The chain length influence were analyzed and shown to be of importance when the spectrum is concerned. It was also observed that the electron excitation generates a pair of neutral solitons on the second chain. © 2008 Wiley Periodicals, Inc. Int J Quantum Chem, 2008