An Alternate Synthetic Route for the Soluble Nonlinear Optical Polyimides
作者:
HanYoung Woo,
Ki-Jeong Moon,
Hong-Ku Shim,
Kwang-Sup Lee,
Mi-Yun Jeong,
Tong-Kun Lim,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1998)
卷期:
Volume 316,
issue 1
页码: 39-42
ISSN:1058-725X
年代: 1998
DOI:10.1080/10587259808044455
出版商: Taylor & Francis Group
关键词: nonlinear optics (NLO);polyimides;second harmonic generation
数据来源: Taylor
摘要:
Two functionalized second-order nonlinear optical polyimides were synthesized by the polycondensation reaction between chromophore-containing dianhydride and diamine monomer. The molecular weights of the final polymers were determined to be Mn= 10000–11800. No melting was detected and they showed relatively low glass transition temperature at 160.7°C and 180.7 °C due to ether linkage in the polymer backbone. In the case of PI2-DANS, high optical quality films were prepared by spin casting. The second harmonic generation coefficients, d33and d31of PI2-DANS were measured to be 24 and 4.8 pm/V respectively. They exhibited no decay untilca.100 °C.
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