Preparation of novel liquid crystalline polymeric film material and its photoinduced alignment behavior
| Autor: | Li-Ping Wu, Shangjin He, Xianzhi Guo, Jun Zhu, Zongjie Du, Keyu Shi, Peng Zhang, Baolong Zhang |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics General Chemical Engineering General Chemistry Polymer Oxetane Biochemistry Ring-opening polymerization law.invention chemistry.chemical_compound Monomer chemistry Optical microscope Chemical engineering Liquid crystal law Phase (matter) Polymer chemistry Materials Chemistry Side chain Environmental Chemistry |
| Zdroj: | Reactive and Functional Polymers. 67:1-9 |
| ISSN: | 1381-5148 |
| DOI: | 10.1016/j.reactfunctpolym.2006.04.015 |
| Popis: | Two kinds of novel oxetane monomers, containing biphenyl, flexible spacer and cinnamoyl group, were synthesized. The liquid crystal phase behavior of the corresponding polymers was investigated and isotropic–nematic, nematic–smectic and smectic–crystal transitions were identified during cooling. Both polymers exhibited clear fan texture morphology under a polarized optical microscope. Irradiation of a polymer film with linearly polarized UV light led to cycloaddition of the cinnamoyl groups, causing simultaneous alignment of the liquid crystal unit. |
| Databáze: | OpenAIRE |
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