Electronic excited states in conjugated polymers

S. Mazumdar; S. N. Dixit

doi:10.1016/0379-6779(89)90730-3

Electronic excited states in conjugated polymers

S. Mazumdar, S. N. Dixit

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

We re-examine the subgap neutral and charged soliton absorptions in polyacetylene and the 2¹ A_g state in finite polyenes within the context of a simple Peierls-Hubbard model. Our motivation is to determine the origin of the optical gap in trans-polyacetylene and to determine the magnitude of the effective on-site Coulomb repulsion. We conclude that this term lies between 2.25t₀ and 2.75t₀, where t₀ is the nearest neighbor one-electron hopping integral.

Original language	English (US)
Pages (from-to)	D463-D468
Journal	Synthetic Metals
Volume	28
Issue number	3
DOIs	https://doi.org/10.1016/0379-6779(89)90730-3
State	Published - Feb 20 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/0379-6779(89)90730-3

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AB - We re-examine the subgap neutral and charged soliton absorptions in polyacetylene and the 21 Ag state in finite polyenes within the context of a simple Peierls-Hubbard model. Our motivation is to determine the origin of the optical gap in trans-polyacetylene and to determine the magnitude of the effective on-site Coulomb repulsion. We conclude that this term lies between 2.25t0 and 2.75t0, where t0 is the nearest neighbor one-electron hopping integral.

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Electronic excited states in conjugated polymers

Abstract

ASJC Scopus subject areas

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