Synthesis, Photoisomerization and Thermo-Optic Property of Azo Optically Active Polymer

Chang Hong Ge; Feng Xian Qiu; Xiao Xian Gu; Dong Ya Yang

doi:10.4028/www.scientific.net/MSF.663-665.41

Paper Titles

Bright Photoluminescence of CdTe Quantum Dots Formed in Phosponic-Oleic Acids Binary Surfactants
p.25

Optical Properties of Lead Glass Doped with CdS/Se Compound
p.29

Field Emission Properties of ZnO Nanorods Synthesized by Aqueous Solutions
p.33

Preparation and Photoluminescence of Ca₃(VO₄)₂: Eu³⁺, Bi³⁺ Phosphor Powder
p.37

Synthesis, Photoisomerization and Thermo-Optic Property of Azo Optically Active Polymer
p.41

Preparation of YVO₄:Eu³⁺ Red Phosphor by Combustion Synthesis and its Luminescence Properties
p.45

Synthesis and Field Emission Properties of Hand-Like Bi₂O₃ Microcrystals
p.50

Spectral Analysis of Ca_2-XBO₃Cl:xDy³⁺ Phosphors
p.54

Cooling Effects in Laser Forming
p.58

HomeMaterials Science ForumMaterials Science Forum Vols. 663-665Synthesis, Photoisomerization and Thermo-Optic...

Synthesis, Photoisomerization and Thermo-Optic Property of Azo Optically Active Polymer

Abstract:

A novel azobenzene optically polymer (P-DA) was synthesized based on the azo chromophore molecule, chiral reagent L(-)-tartaric acid, acryloyl chloride and methacrylate. The P-DA was characterized by FT-IR, UV-Vis spectroscopy, 1H NMR, DSC and TGA. The P-DA had high thermal stability up to its glass-transition temperature (Tg) of 110 oC and 5 % heat weight loss temperature of 199 oC. The UV-induced trans/cis photoisomerization and reflex-isomerization behaviors were investigated. The results indicated that the P-DA solution could undergo photochromism after irradiated by 365 nm UV light. The optical parameters: refractive index (n), the dielectric constant (ε) and thermal volume expansion coefficient (β) of P-DA were obtained. The thermo-optic coefficients are one order of magnitude larger than those of the inorganic materials, such as SiO2 (1.1×10−5 oC -1 and LiNbO3 (4×10−5 oC -1) and was larger than the organic material such as polystyrene (-1.23×10-4 oC -1) and PMMA (-1.20×10-4 oC -1). The conclusion had a little significance to develop optical communication.