Preparation of Novel Azo Polyurethane with Chiral Atoms and its Optical Properties
A new azo polyurethane with chiral atoms was synthesized with 4-nitroaniline, sodium nitrite and S(-)-α-methylbenzylamine by diazo coupling reaction. The absorption spectrum of this novel azo polyurethane with chiral atoms was characterized by UV-Vis spectroscopy. The solubility was measured with different kinds of organic solution. And the thermal property was characterized by X-5 micro melting point apparatus, by which the melting point is 165℃. This result showed that the new azo polyurethane had excellent thermal stability. Mechanical properties of the novel polyurethane with chiral atoms, such as tensile strength and hardness, were also studied. The refractive index of the polymer waveguide thin film was detected by attenuated total reflection (ATR) method at different temperature, wavelength and mode of the incident light The results showed that the refractive index of the material decreases with the temperature rising. Compared with inorganic materials, the new material has a bigger thermo-optic coefficient. At the same time, the dispersion coefficient was calculated by the Sellmeyer equation. The thermo-optical coefficients of the material for TM (transversal magnetic) and TE (transversal electric) modes were also studied and they are obviously different, which can be used to design and develop the novel thermo-optic switch and even all-optical switch in the future.
azo polyurethane thermo-optic coefficient dispersion birefringence
Qiang Shen Jinhua Liu Zhengling Wang Guorong Cao Fengxian Qiu
Faculty of science, Jiangsu University, Zhenjiang, China. 212013 School of Chemistry and Chemical Engineering, JiangsuUniversity, Zhenjiang, China, 212013 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China, 212013
国际会议
2011 International Conference on Electronics and Optoelectronics(2011电子学与光电子学国际会议 ICEOE 2011)
大连
英文
1046-1049
2011-07-29（万方平台首次上网日期，不代表论文的发表时间）