A new polythiophene derivative bearing an azobenzene substituent at the end of a ethylenic side-chain was synthesized and characterized by FT-IR spectroscopy, 1H and 13C 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 d33 to be obtained, making these polymers suitable for the construction of second-harmonic generators with improved efficiency and life-time
M. Lanzi, L. Paganin, G. Cesari (2008). Novel polymers with inherent conductivity and enhanced 2nd order NLO activity. MACROMOLECULAR CHEMISTRY AND PHYSICS, 209, 375-384 [10.1002/macp.200700242].
Novel polymers with inherent conductivity and enhanced 2nd order NLO activity
LANZI, MASSIMILIANO;PAGANIN, LUISA;CESARI, GAIA
2008
Abstract
A new polythiophene derivative bearing an azobenzene substituent at the end of a ethylenic side-chain was synthesized and characterized by FT-IR spectroscopy, 1H and 13C 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 d33 to be obtained, making these polymers suitable for the construction of second-harmonic generators with improved efficiency and life-timeI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
