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Novel Polymers with Inherent Conductivity and Enhanced Second‐Order NLO Activity
Author(s) -
Lanzi Massimiliano,
Paganin Luisa,
Cesari Gaia
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700242
Subject(s) - chromophore , polymer , substituent , azobenzene , polythiophene , spectroscopy , polymer chemistry , chemistry , conductivity , side chain , materials science , photochemistry , conductive polymer , organic chemistry , physics , quantum mechanics
A new polythiophene derivative bearing an azobenzene substituent at the end of a ethylenic side‐chain was synthesized and characterized by FT‐IR spectroscopy, 1 H and 13 C NMR spectroscopy, DSC, TGA, XRD, and UV‐vis spectroscopy. Its electrical conductivity was measured and its second‐order NLO activity was by SHG. Structure‐property relations were elucidated by comparison with a similar polymer only partially substituted by the NLO‐active chromophore. The molecular design of the chromophoric system allows high and stable non‐linear coefficients d 33 to be obtained, making these polymers suitable for the construction of second‐harmonic generators with improved efficiency and life‐time.