Anomalous Raman scattering from the surface of conjugated polymer melts

H. Liem, P. Etchegoin, and D. D. C. Bradley
Phys. Rev. B 64, 144209 – Published 24 September 2001
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Abstract

Confocal Raman spectroscopy from the surface of a polymer melt is shown to produce anomalous results for polarized Raman scattering of specific molecular vibrations. Values of the depolarization ratio that cannot exist in normal liquids are interpreted as due to surface-induced molecular orientation of the polymer chains. The technique provides one of the few direct experimental evidences of molecular-orientation effects predicted in lattice models of polymer melts.

  • Received 30 April 2001

DOI:https://doi.org/10.1103/PhysRevB.64.144209

©2001 American Physical Society

Authors & Affiliations

H. Liem, P. Etchegoin*, and D. D. C. Bradley

  • The Blackett Laboratory, Imperial College of Science, Technology, and Medicine, Prince Consort Road, SW7 2BZ London, United Kingdom

  • *Email address: p.etchegoin@ic.ac.uk

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Issue

Vol. 64, Iss. 14 — 1 October 2001

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