Citation: Wen Zhao, Bao-ping Lin, Xue-qin Zhang, Ying Sun, Hong Yang. Polysiloxane Side-chain Liquid Crystalline Polymers Prepared by Alkyne Hydrosilylation[J]. Chinese Journal of Polymer Science, ;2015, 33(10): 1431-1441. doi: 10.1007/s10118-015-1697-9 shu

Polysiloxane Side-chain Liquid Crystalline Polymers Prepared by Alkyne Hydrosilylation

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School of Chemistry and Chemical Engineering, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Southeast University, Nanjing 211189, China

Corresponding author: Hong Yang, yanghong_chem@yeah.net
Received Date: 20 March 2015
Revised Date: 29 April 2015

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 21374016).

We describe in this work an alkyne-hydrosilylation approach to synthesize a series of novel polysiloxane sidechain LCPs attaching end-on or side-on mesogenic side groups. Their properties are characterized by NMR, FTIR, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, polarized optical microscopy and small-angle X-ray scattering. These obtained alkenylsilane linked novel LCPs exhibit higher glass transition temperatures and clearing points, and especially display the tendency of forming smectic phases, in strong contrast with the nematic phases of their comparative conventional alkylsilane linked analogues, which manifests more rigid features of the alkenylsilane linkages and their significant influence on the mesomorphic properties.
- Liquid crystalline polymer,
- Polysiloxane,
- Alkyne hydrosilylation
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