Excitons in two coupled conjugated polymer chains

Details Excitons in two coupled conjugated polymer chains Excitons in two coupled conjugated polymer chains

1997-09-23

arxiv.org/abs/cond-mat/9709253v1

J. Phys. Cond. Mat 8, 8847 (1996)

Physics

Condensed Matter

Soft Condensed Matter

19 pages, pdf file of the paper available

Scientific paper

10.1088/0953-8984/8/45/018

We have studied the exciton states in two coupled conjugated polymer chains which are modeled individually by the Su-Schrieffer-Heeger Hamiltonian and coupled by an interchain electron-transfer term. Both the intra- and inter-chain long range Coulomb interactions are taken into account. The properties of the lowest symmetric and antisymmetric exciton states are extensively discussed for both the parallel and anti-parallel ordering between these two chains. It is found that, for these two kinds of ordering, the features of excitons are quite different. Possible implications for the experiment of luminescent polymers are also addressed.

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