Synthesis and Nonlinear Optical Properties of a Novel Polyester Containing Tricyanovinylthienyl Group
作者:Hyo Jin No、Ga-Young Lee、You Jin Cho、Ju-Yeon Lee
DOI:10.1080/15421400903584390
日期:2010.4.13
A novel T-type polyester (7) containing 1-(2,5-dioxyphenyl)-2-5-(1,2,2-tricyanovinyl)- 2-thienyl} ethene groups as NLO-chromophores was synthesized and characterized. Polymer 7 was soluble in common organic solvents such as DMF and DMSO. It showed thermal stability up to 300 degrees C in TGA with T-g value obtained from DSC near 113 degrees C. The second harmonic generation (SHG) coefficient (d(33)) of poled polymer film at the 1560 nm fundamental wavelength was around 4.42 x 10(-9) esu. The dipole alignment exhibited a greater thermal stability even at 10 degrees C higher than T-g, and there was no SHG decay below 125 degrees C due to the partial main-chain character of the polymer structure, which is acceptable for nonlinear optical device applications.