Synthesis and Characterization of Nonlinear Optical Polymers Having Quinoline-based Chromophores

Bulletin of the Korean chemical society

Jung-Il Jin¹  Ki Hong Park¹  Chul Joo Lee¹  Nakjoong Kim¹  Min Ho Kim¹ 

关键词: MQDT;    Resonance;    Configuration interaction theory.;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

We synthesized three kinds of chromophores incorporating aromatic quinoline unit as a �?-conjugated bridge in order to prepare more thermally stable nonlinear optical (NLO) chromophores than general stilbene unit. The NLO poly(methylmethacrylate) copolymer, polyimides, and polyester were successfully synthesized by these corresponding quinoline-based monomers. Their physical and optical properties were investigated by thermogravimetry, gel permeation chromatography, ultraviolet-visible spectroscopy, second harmonic generation (SHG) and electro-optic (EO) measurement. All the polymers exhibited better thermal stability,however their NLO activity was a little lower than that of general stilbene-based NLO polymers. Among three kinds of polymers, the PMMA copolymer with quinoline chromophores had the largest SHG coefficient d₃₃ value of 27 pm/V (at 1.064 Л) and EO coefficient r₃₃ value of 6.8 pm/V (at 1.3 Л).

【 授权许可】

Unknown