Synthesis and nonlinear optical properties of novel Y-type polyester containing tricyanovinylthiazolylazoresorcinoxy group with enhanced thermal stability of dipole alignment
作者:You Jin Cho、Hyo Jin No、Mi Sung Kim、Ju-Yeon Lee
DOI:10.1002/pola.24603
日期:2011.4.15
Novel Y‐type polyester 4 containing 5‐methyl‐4‐5‐(1,2,2‐tricyanovinyl)‐2‐thiazolylazo}resorcinoxy groups as nonlinear optical (NLO) chromophores, which are parts of the polymer backbone, was prepared, and its NLO properties were investigated. Polyester 4 is soluble in common organic solvents such as N,N‐dimethylformamide and dimethylsulfoxide. Polymer 4 shows a thermalstability up to 250 °C from
Synthesis and Nonlinear Optical Properties of Novel Y-Type Polyurethane Containing Cyanovinylthiazole
作者:Hyo Jin No、You Jin Cho、Ju-Yeon Lee
DOI:10.1080/15421400903584382
日期:2010.4.13
A novel Y-type polyurethane 4 containing 5-methyl-4-5-(1,2,2-tricyanovinyl)-2-thiazolylazo}resorcinoxy groups as nonlinear optical (NLO)-chromophores, which constituted parts of the polymer backbones, was prepared and characterized. Polyurethane 4 is soluble in common organic solvents such as acetone and N,N-dimethylformamide. It showed a thermal stability up to 250 degrees C in thermogravimetric analysis thermogram and the glass-transition temperature (T-g) obtained from differential scanning calorimetry thermogram was around 118 degrees C. The second harmonic generation (SHG) coefficient (d(33)) of poled polymer film at 1560 nm fundamental wavelength was around 8.43 x 10(-9) esu. The dipole alignment exhibited a thermal stability even at 12 degrees C higher than T-g, and there was no SHG decay below 130 degrees C due to the partial main-chain character of the polymer structure, which is acceptable for nonlinear optical device applications.
Synthesis and Properties of Novel Y-type Nonlinear Optical Polyester Containing Tricyanovinylthiazole
作者:Hyo Jin No、Mi Sung Kim、Ju-Yeon Lee
DOI:10.1080/15421406.2011.566072
日期:2011.5.31
A novel Y-type polyester 4 containing 5-methyl-4-5-(1,2,2-tricyanovinyl)-2-thiazolylazo}resorcinoxy groups as nonlinear optical (NLO) chromophores was prepared and characterized. Polyester 4 is soluble in common organic solvents such as acetone and N,N-dimethylformamide. It shows a thermal stability up to 250 degrees C from thermogravimetric analysis thermogram with a glass-transition temperature (Tg) obtained from differential scanning calorimetry thermogram of around 94 degrees C. The second harmonic generation (SHG) coefficient (d33) of poled polymer film at 1064nm fundamental wavelength is 8.12x10-9esu. The dipole alignment exhibits a thermal stability even at 6 degrees C higher than Tg and there is no significant SHG decay below 100 degrees C due to the partial main-chain character of the polymer structure, which is acceptable for nonlinear optical device applications.