具有高二阶极化率噻唑类生色分子的合成与表征

Synthesis and Characterization of Thiazole Chromophores with High Second-order Polarizability

设计、合成了含羟乙基活性基团的噻唑类非线性生色分子,用IR,EA,1HMNR,UV-Vis和DSC-TG等对其结构和性能进行了表征,用超瑞利散射技术测定了其二阶极化率.结果表明:两种噻唑类生色分子具有较高的β值,在波长1064nm处,β分别为5.60×10-28和5.76×10-28esu,其最大吸收波长都未超过600nm,截止波长均小于710nm,生色分子的热分解温度分别为224和216℃,具有较好的热稳定性,可用于制备性能优异的非线性光学材料.

Two nonlinear optical thiazole chromophores with active hydroxyethyl group were designed and synthesized. The structures and properties of the organic molecules were characterized by IR, elemental analysis, ^1H MNR, UV-vis and DSC-TG. The second order nonlinear optical properties of both were determined by hyper Rayleigh scattering method. The results show that the compounds have high β values of 5.60×10^-28 and 5.76×10^-28 esu at 1064 nm wavelength, respectively. The maximum absorption wavelengths of the compounds were less then 600 nm, and their critical wavelengths below 710 nm. These compounds were thermally stable with the decomposition temperature of 224 and 216 ℃, respectively, and consequently they could be considered to be better choices for the preparation of NLO materials.