A PHOTOELECTRON-SPECTROSCOPY STUDY OF THE CHARGE-INDUCED PI-ELECTRONIC STRUCTURAL-CHANGES IN ALPHA,OMEGA-DIPHENYLTETRADECAHEPTAENE - A MODEL MOLECULE FOR POLYACETYLENE

Authors
LOGDLUND M DANNETUN P STAFSTROM S SALANECK WR FREDRIKSSON C BREDAS JL RAMSEY MG SPANGLER CW
Citation
M. Logdlund et al., A PHOTOELECTRON-SPECTROSCOPY STUDY OF THE CHARGE-INDUCED PI-ELECTRONIC STRUCTURAL-CHANGES IN ALPHA,OMEGA-DIPHENYLTETRADECAHEPTAENE - A MODEL MOLECULE FOR POLYACETYLENE, Synthetic metals, 57(2-3), 1993, pp. 4722-4727
Citations number
17
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Mining
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
57
Issue
2-3
Year of publication
1993
Pages
4722 - 4727
Database
ISI
SICI code
0379-6779(1993)57:2-3<4722:APSOTC>2.0.ZU;2-H
Abstract
The pi-electronic structural changes in a diphenylpolyene, alpha,omega -diphenyltetraheptaene, or DP7, have been studied upon gradually dopin g with sodium, using X-ray and Ultraviolet Photoelectron Spectroscopy, XPS and UPS. The spectra are interpreted with the help of the results from Austin Model 1 (AM1) and Valence Effective Hamiltonian (VEH) qua ntum chemical calculations. The results of the doping with sodium can be discussed in terms of two confined solitons on the polyene part of the molecule, which results in two new energy levels in the originally forbidden energy pp.