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Proceedings Paper

Molecular mobility studies of dye-doped polymers below and above room temperature using second-harmonic generation
Author(s): Fassil Ghebremichael; Mark G. Kuzyk; Carl W. Dirk
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Paper Abstract

The first second-harmonic generation field-induced molecular reorientation experiments in a dye-doped polymer in the 100 K to 500 K temperature range is reported. The (alpha) transition, related to the mobility of the polymer backbone, is easily observed. We also see evidence of the (beta) transition (attributed to side-chain mobility). We demonstrate the low- temperature end of our data suggests that the polymer acts as a rigid elastic constraint to the chromophore. We also observe what appears to be a spontaneously ordered phase of the doped polymer that ma be associated with the polymer/substrate interface. We report on the temperature-dependent phase transition of the transparent indium tin oxide electrode. Suggestions are made on separating the ITO contribution from the polymer response.

Paper Details

Date Published: 16 December 1993
PDF: 9 pages
Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); doi: 10.1117/12.165298
Show Author Affiliations
Fassil Ghebremichael, Washington State Univ. (United States)
Mark G. Kuzyk, Washington State Univ. (United States)
Carl W. Dirk, Univ. of Texas/El Paso (United States)

Published in SPIE Proceedings Vol. 2025:
Nonlinear Optical Properties of Organic Materials VI
Gustaaf R. Moehlmann, Editor(s)

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