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Design, Synthesis, and Characterization of Crosslinkable Doped NLO Materials Based on Polyurethanes Containing Spindle‐Type Chromophores
Author(s) -
Zhang Xiaolong,
Li Ming,
Shi Zuosen,
Wan Ying,
Zhao Lisha,
Jin Rulong,
Wang Xibin,
Zhang Daming,
Yi Maobin,
Cui Zhanchen
Publication year - 2011
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.201000626
Subject(s) - poling , chromophore , fourier transform infrared spectroscopy , thermal stability , materials science , molecule , characterization (materials science) , doping , polymer chemistry , thermal decomposition , thin film , second harmonic generation , chemical engineering , chemistry , organic chemistry , nanotechnology , optics , optoelectronics , ferroelectricity , dielectric , engineering , laser , physics
Spindle‐type chromophore molecules have been successfully designed and synthesized. Furthermore, a new series of main‐chain second‐order nonlinear PUs with spindle‐type chromophore molecules have been prepared. These PU offered good processability; thus thin films of optical‐quality could be easily prepared from their solutions. The molecular structural characterization of the resulting PU was achieved by 1 H NMR and FTIR spectroscopy and elemental analysis. TGA measurement of the PU showed that they had good thermal stability with decomposition temperature higher than 250 °C. The nonlinear electro‐optic coefficient of the PU‐2/poly(MMA ‐co‐ GMA) doped film was measured up to 32 pm · V −1 by Teng‐Man technique after poling and crosslinking.