摘要
In order to improve the nonlinear optical property and stability of azo-dye chromophore, the nonlinear optical polyimide (NLOPI) attached with azo chromophore side chain is synthesized by diazo coupling reaction of 4-nitrobenzenediazonium tetrafloroborate. The designed chemical structure of production can be proved in the infrared spectrum and ultraviolet-visible absorption spectrum. The NLOPI exhibited UV-Vis absorption of the azobenzene chromophore in the vicinity of the wavelengths of 330 and 490 nm. The broad amorphous peak proved that the NLOPI was amorphous with a little periodical structure along the side chain. According to transmission electron microscope, the NLOPI film was homogeneous. NLOPI only displayed a decrease in mass of about 5% at the temperature of 400 ℃ through thermogravimetric analysis.
In order to improve the nonlinear optical property and stability of azo―dyechromophore, the nonlinear optical polyimide (NLOPI) attached with azo chromophore side chain issynthesized by diazo coupling reaction of 4 ―nitrobenzenediazonium tetrafloroborate. The designedchemical structure of production can be proved in the infrared spectrum and ultraviolet―visibleabsorption spectrum. The NLOPI exhibited UV―Vis absorption of the azobenzene chromophore in thevicinity of the wavelengths of 330 and 490 nm. The broad amorphous peak proved that the NLOPI wasamorphous with a little periodical structure along the side chain. According to transmissionelectron microscope, the NLOPI film was homogeneous. NLOPI only displayed a decrease in mass ofabout 5% at the temperature of 400 ℃ through thermogravimetric analysis.
基金
NationalNaturalScienceFoundationofChina(10 0 75 0 38)
