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Proceedings Paper

Raman light scattering by compositions of highly ordered trans-nanopolyacetylene
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Paper Abstract

Compositions of highly ordered trans-nanopolyacetylene (trans-NPA) were prepared in the form of solutions, films and plates. They are characterized by the high stability and vibrational structure of the cis and trans bands in UV-Vis absorption spectra. There are five basic features that distinguish the Raman scattering by the trans-NPA compositions from the Raman scattering by the standard trans-PA modification. (1) Extremely low intensity of fluorescence at excitation in visual region. (2) The weak frequency dispersion of polyene C=C and C-C stretching bands, which is evidence for the narrow length distribution of conjugation chains. (3) The occurrence of long sequences of overtones and combination bands in room- temperature resonance and off-resonance Raman spectra. (4) High intensities of the anti-Stokes lines of the fundamentals v1 and v3 of the polyene chain. (5) Extremely high intensities of the v1 and v3 fundamentals of the polyene chain.

Paper Details

Date Published: 30 June 1999
PDF: 8 pages
Proc. SPIE 3790, Engineered Nanostructural Films and Materials, (30 June 1999);
Show Author Affiliations
Valerii M. Kobryanskii, Institute of Chemical Physics (United States)

Published in SPIE Proceedings Vol. 3790:
Engineered Nanostructural Films and Materials
Akhlesh Lakhtakia; Russell F. Messier, Editor(s)

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