Synthesis and characterization of side-chain liquid crystalline polymer containing dichroic dye monomer |
| |
Authors: | Yingguang Jia Zhiliu Feng |
| |
Institution: | a The Research Center for Molecular Science and Engineering, Northeastern University, Shenyang 110006, PR China b Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China |
| |
Abstract: | A series of side-chain liquid crystalline polysiloxanes containing 1-(p-toluidino)-4-anthraquinone undecylenate (TAU) (dye-monomer) and 4-allyloxybenzoyl-4′-(p-propyl-benzoyl)-p-benzenediol bisate (ABB) (liquid crystalline monomer) side groups were synthesized by copolymeraztion. The molecular structures of the monomers and polymers were confirmed by FT-IR spectroscopy. The optical characterization of the monomer ABB and polymers was made by using polarizing optical microscopy (POM) technique, and their thermal behaviour was investigated by thermogravimetric analyses (TGA) and differential scanning calorimetry (DSC). The conjugate action of the dye (1-(p-toluidino)-4-hydroxyl anthraquinone) and the monomer was analyzed by fluorophotometry. Polymers and monomer ABB revealed nematic phase. And DSC results demonstrated that the glass transition temperatures (Tg) of the polymers increased with the increase in dye-monomer. TGA result showed that the temperatures at which 5% mass loss occurred () for all the polymers were above 270 °C. |
| |
Keywords: | Side-chain liquid crystalline polymers Dichroic dye Nematic phase Polysiloxanes |
本文献已被 ScienceDirect 等数据库收录! |