Synthesis and properties of novel X-type nonlinear optical polyester containing nitrophenylazonitroresorcinoxy group with highly enhanced SHG thermal stability
作者:Ji-Hyang Lee、Ju-Yeon Lee
DOI:10.1016/j.dyepig.2015.01.003
日期:2015.4
New X-type polyester (4) containingnitrophenylazonitroresorcinoxygroups as NLO chromophores, which are components of the polymer backbone, was prepared and characterized. Polyester 4 is soluble in common organic solvents such as acetone and N,N-dimethylformamide. It shows a thermalstability up to 280 °C in thermogravimetric analysis with glass-transition temperature (Tg) obtained from differential
Synthesis and Nonlinear Optical Properties of Novel Polyester Containing Nitrophenylazonitroresorcinoxy Group
作者:Ji-Hyang Lee、Ju-Yeon Lee
DOI:10.1080/15421406.2015.1095965
日期:2015.11.2
A new X-type polyester (4) containing nitrophenylazonitroresorcinoxy groups as NLO chromophores, which are components of the polymer backbone was prepared. Polyester 4 is soluble in common organic solvents such as N,N-dimethylformamide and dimethylsulfoxide. It shows a thermal stability up to 280 degrees C from thermogravimetric analysis with glass-transition temperature (T-g) obtained from differential scanning calorimetry near 120 degrees C. The second harmonic generation (SHG) coefficient (d(33)) of poled polymer films at the 1064nm fundamental wavelength is around 5.08 x 10(-9) esu. The dipole alignment exhibits a thermal stability even at 5 degrees C higher than T-g, and no SHG decay was observed below 125 degrees C due to the partial main-chain character of polymer structure, which is acceptable for NLO device applications.