Localized molecular excitons in polyaniline

Autor:	A. Paton, C. B. Duke, E.M. Conwell
Rok vydání:	1986
Předmět:	Chemistry Exciton Uv absorption General Physics and Astronomy Electron Photochemistry Spectral line chemistry.chemical_compound Absorption band Polyaniline Physics::Atomic and Molecular Clusters Moiety Physics::Chemical Physics Physical and Theoretical Chemistry Absorption (chemistry)
Zdroj:	Chemical Physics Letters. 131:82-86
ISSN:	0009-2614
DOI:	10.1016/0009-2614(86)80521-8
Popis:	An analysis of the UV absorption spectra of polyemeraldine and nigrosine reveals that the absorption band which appears at about 2.2 eV in both compounds is due to the creation of a localized molecular exciton with the electron on a quinoid moiety and the hole on the neighboring two benzoid moieties. The quinoid moiety is rotated approximately 90° relative to its ground-state conformation. Higher-energy absorption bands may be associated with molecular excitons localized on individual phenyl moieties.
Databáze:	OpenAIRE
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