Experimental and theoretical studies of the anisotropical complex dielectric constant of highly stretch-oriented poly(p-phenylene-vinylene)

Authors
Comoretto, D Dellepiane, G Marabelli, F Tognini, P Stella, A Cornil, J dos Santos, DA Bredas, JL Moses, D
Citation
D. Comoretto et al., Experimental and theoretical studies of the anisotropical complex dielectric constant of highly stretch-oriented poly(p-phenylene-vinylene), SYNTH METAL, 116(1-3), 2001, pp. 107-110
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
116
Issue
1-3
Year of publication
2001
Pages
107 - 110
Database
ISI
SICI code
0379-6779(20010115)116:1-3<107:EATSOT>2.0.ZU;2-3
Abstract
We report on the determination of the anisotropical complex optical constan ts of highly stretch-oriented poly(p-phenylene-vinylene) (PPV) from Kramers -Kronig transformation of near-normal incidence absolute reflectivity and i nversion of reflectance and transmittance measurements. These data are disc ussed and compared with those obtained from quantum chemical calculations e xtended to include the electronic correlation in an 11-ring PPV oligomer. O n the basis of this comparison a new assignment of the optical transitions in PPV is proposed. (C) 2001 Elsevier Science B.V. All rights reserved.