We have determined the frequency dispersion of the anisotropic complex optical constants of highly stretchoriented poly~p-phenylene-vinylene! chains from Kramers-Kronig transformation of polarized near-normalincidence absolute reflectivity data, inversion of polarized reflectance and transmittance measurements, and spectroscopic ellipsometry. The spectroscopic data are discussed in comparison to the results provided by correlated quantum-chemical calculations. On this basis, we assign the nature and polarization of the optical transitions in poly~p-phenylene-vinylene! chains.
THE OPTICAL CONSTANTS OF HIGHLY STRETCH ORIENTED POLY(P-PHENYLENE-VINYLENE): A JOINT EXPERIMENTAL AND THEORETICAL STUDY
COMORETTO, DAVIDE;DELLEPIANE, GIOVANNA;
2000-01-01
Abstract
We have determined the frequency dispersion of the anisotropic complex optical constants of highly stretchoriented poly~p-phenylene-vinylene! chains from Kramers-Kronig transformation of polarized near-normalincidence absolute reflectivity data, inversion of polarized reflectance and transmittance measurements, and spectroscopic ellipsometry. The spectroscopic data are discussed in comparison to the results provided by correlated quantum-chemical calculations. On this basis, we assign the nature and polarization of the optical transitions in poly~p-phenylene-vinylene! chains.
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