Conformational effects on optical charge transfer in the emeraldine base form of polyaniline from electroabsorption measurements and semiempirical calculations

Lavanya L. Premvardhan, Sebastian Wachsmann-Hogiu, Linda A. Peteanu, David J. Yaron, Pen Cheng Wang, Wei Wang, Alan G. MacDiarmid

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The effects of conformation on optical charge transfer in emeraldine base form of polyaniline were studied using electroabsorption measurements. The experiment was carried out in polymethyl methacrylate matrix at room temperature. The change in dipole moment on excitation and polarizability for electronic transitions was measured. Semiempirical calculations for varying geometries of oligomers were performed. The analysis identified low-energy conformers with large dipole moments caused by conformational heterogeneity.

Original languageEnglish (US)
Pages (from-to)4359-4366
Number of pages8
JournalJournal of Chemical Physics
Volume115
Issue number9
DOIs
StatePublished - Sep 1 2001
Externally publishedYes

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Dipole moment
Charge transfer
dipole moments
charge transfer
Polymethyl Methacrylate
oligomers
Oligomers
polymethyl methacrylate
Conformations
Geometry
room temperature
matrices
geometry
electronics
excitation
Experiments
Temperature
polyaniline
energy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Conformational effects on optical charge transfer in the emeraldine base form of polyaniline from electroabsorption measurements and semiempirical calculations. / Premvardhan, Lavanya L.; Wachsmann-Hogiu, Sebastian; Peteanu, Linda A.; Yaron, David J.; Wang, Pen Cheng; Wang, Wei; MacDiarmid, Alan G.

In: Journal of Chemical Physics, Vol. 115, No. 9, 01.09.2001, p. 4359-4366.

Research output: Contribution to journalArticle

Premvardhan, Lavanya L. ; Wachsmann-Hogiu, Sebastian ; Peteanu, Linda A. ; Yaron, David J. ; Wang, Pen Cheng ; Wang, Wei ; MacDiarmid, Alan G. / Conformational effects on optical charge transfer in the emeraldine base form of polyaniline from electroabsorption measurements and semiempirical calculations. In: Journal of Chemical Physics. 2001 ; Vol. 115, No. 9. pp. 4359-4366.
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