LONG-LIVED NEUTRAL SOLITONS IN PERNIGRANILINE BASE

Authors
EPSTEIN AJ BLATCHFORD JW KIM K LIN LB GUSTAFSON TL COPLIN KA MACDIARMID AG
Citation
Aj. Epstein et al., LONG-LIVED NEUTRAL SOLITONS IN PERNIGRANILINE BASE, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 256, 1994, pp. 399-405
Citations number
19
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
256
Year of publication
1994
Pages
399 - 405
Database
ISI
SICI code
1058-725X(1994)256:<399:LNSIPB>2.0.ZU;2-M
Abstract
Pernigraniline base is the first Peierls degenerate ground state polym er beyond trans- polyacetylene. It is similar to trans- polyacetylene in that is sustains neutral and charged solitons and charged polarons as photoexcitations. Pernigraniline base differs substantially from tr ans- polyacetylene in that photoexcited neutral solitons are stable fo r long times for temperatures below 150 K and that at high photoexcita tion densities, photoexcited neutral solitons are stable, even at room temperature. The origin of this anomalous behavior is attributed to t he central role of ring rotations and interchain interactions in the s ystem.