Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (11): 3073-3079.doi: 10.3866/PKU.WHXB20101127

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Synthesis and Nonlinear Optical Properties of Fluorinated Polyimides Containing Benzothiazole

HE Man1, ZHOU Yu-Ming1, MIAO Jun-Liang1, LIU Cheng1, FANG Cheng1, CUI Yi-Ping2, ZHANG Tong2   

  1. 1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China;
    2. School of Electronic Science and Engineering, Southeast University, Nanjing 210096, P. R. China
  • Received:2010-05-20 Revised:2010-07-12 Published:2010-10-29
  • Contact: ZHOU Yu-Ming E-mail:ymzhou@seu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (60977038, 50873026, 60910187), Science and Technology Support Programof Jiangsu Province, China (BE2008129).

Abstract:

Hetarylazo chromophores were incorporated into fluorinated polyimide matrices to prepare novel nonlinear optical (NLO) side-chain fluorinated polyimides by the Mitsunobu reaction. Their structures were verified by Fourier transform infrared (FT-IR) spectra, UV-visible (UV-Vis) spectra, 1H nuclear magnetic resonance (1H NMR) spectra, and gel permeation chromatography (GPC). Thermal analysis results indicate that the side-chain polyimides have high glass transition temperatures (Tg) between 184 and 188℃ and thermal decomposition temperatures (Td) up to 322℃. The electro-optic coefficients (γ33) of the side-chain polyimides were measured by a simple reflection technique at 1550 nm. The fluorinated polyimide PI1 containing a benzothiazolylazoaniline chromophore possesses a high electro-optic coefficient of 15 pm·V-1.

 

Key words: Nonlinear optical, Fluorine-containing polyimide, Benzothiazolylazo chromophore molecular, Thermal stability, Electrooptic coefficient

MSC2000: 

  • O644