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- W2036692953 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 v<SUB>1</SUB> and v<SUB>3</SUB> of the polyene chain. (5) Extremely high intensities of the v<SUB>1</SUB> and v<SUB>3</SUB> fundamentals of the polyene chain." @default.
- W2036692953 created "2016-06-24" @default.
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- W2036692953 date "1999-06-30" @default.
- W2036692953 modified "2023-09-25" @default.
- W2036692953 title "Raman light scattering by compositions of highly ordered trans-nanopolyacetylene" @default.
- W2036692953 doi "https://doi.org/10.1117/12.351256" @default.
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