Long-range excitons in conjugated polymers with ring torsions

Details Long-range excitons in conjugated polymers with ring torsions Long-range excitons in conjugated polymers with ring torsions

1997-05-15

arxiv.org/abs/cond-mat/9705143v2

Chem. Phys. Lett. 281 (1997) 319-324

Physics

Condensed Matter

Soft Condensed Matter

10 pages; 5 figures; to be published in Chemical Physics Letters; more info at http://www.etl.go.jp/~harigaya/ ; http://www.et

Scientific paper

10.1016/S0009-2614(97)01200-1

Ring torsion effects on optical excitation properties in poly(para-phenylene) (PPP) and polyaniline (PAN) are investigated by the intermediate exciton formalism. Long-range excitons are characterized, and the long-range component of the oscillator strengths is calculated. We find that ring torsions affect the long-range excitons in PAN more easily than in PPP, due to the larger torsion angle of PAN and the large number of bonds whose hopping integrals are modulated by torsions.

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