Ultraviolet photoelectron spectroscopy of poly(anthraquinone)s and poly(1,10-phenanthroline-3,8-diyl); their electronic structure and K-doped states
| Autor: | Kanako Seki, Takakazu Yamamoto, Takayuki Miyamae, T. Saito, Yukiko Muramatsu, Hideki Etori, Yoko Sakurai, Nobuo Ueno, M. Aoki |
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| Rok vydání: | 1998 |
| Předmět: |
Bipolaron
Radiation Materials science Dopant Band gap Phenanthroline Electronic structure Condensed Matter Physics Photochemistry Anthraquinone Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound Crystallography chemistry Reactivity (chemistry) Physical and Theoretical Chemistry Spectroscopy Ultraviolet photoelectron spectroscopy |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0368-2048 |
| DOI: | 10.1016/s0368-2048(97)00218-1 |
| Popis: | Ultraviolet photoelectron spectra were measured for two classes of π-conjugated systems, poly(anthraquinone)s [poly(2-methylanthraquinone-1,4-diyl) [P(2Me-1,4-AQ)], poly(anthraquinone-1,5-diyl) [P(1,5-AQ)]], and poly(1,10-phenanthroline-3,8-diyl) (PPhen). Upon K-doping of PPhen, two new states, which could be assigned to bipolaron bands, appear in the originally empty energy gap. In the case of K-doped P(2Me-1,4-AQ), a new state appeared in the energy gap region. On the other hand, P(1,5-AQ) showed poor reactivity to the dopant in comparison with P(2Me-1,4-AQ). The electronic structures of the neutral and K-doped states of these polymers were analyzed using semiempirical MO calculations. The electronic structure of PPhen-metal complex was also examined. |
| Databáze: | OpenAIRE |
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