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Temperature evolution of the electronic band structure of the undoped and doped regioregular analog of poly(3‐alkylthiophenes): A spectroscopic and theoretical study
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
Linköpings universitet, Institutionen för fysik, kemi och biologi. Linköpings universitet, Tekniska högskolan.
Department of Chemistry, Technical University of Warsaw, PL‐00 664 Warsaw, Poland.
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1994 (engelsk)Inngår i: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 100, nr 2, s. 1731-1741Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

The undoped and ferric chloride p‐doped ‘‘head‐to‐head’’ ‘‘tail‐to‐tail’’ analog of poly(3‐decylthiophene) obtained from substituted bithiophenes, i.e., poly(4,4’didecyl‐2,2’bithiophene)‐PDDBT has been investigated. The samples were studied by means of ultraviolet photoelectron spectroscopy,optical absorption measurements, and polymerbands structure calculations. Experiments were carried out at different temperatures between 100 °C and −180 °C. The results indicate that PDDBT is nonplanar in the undoped state. No temperature effects have been observed in the π‐electron properties. In the doped state, however, lowering of the temperature results in an increase of the system planarity that modifies the electronic band structure. This effect has been shown to be fully reversible with temperature.

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American Institute of Physics (AIP), 1994. Vol. 100, nr 2, s. 1731-1741
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URN: urn:nbn:se:liu:diva-124171DOI: 10.1063/1.466600ISI: A1994MT00700105OAI: oai:DiVA.org:liu-124171DiVA, id: diva2:896137
Tilgjengelig fra: 2016-01-20 Laget: 2016-01-20 Sist oppdatert: 2017-11-30bibliografisk kontrollert

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