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论文类型：期刊论文
发表时间：2013-08-05
发表刊物：CHEMISTRY LETTERS
收录刊物：SCIE、Scopus
卷号：42
期号：8
页面范围：915-917
ISSN号：0366-7022
摘要：The paper introduces a simple method to synthesize novel liquid crystalline polystyrene (LC-PS) containing a mesogenic unit at a side chain by hydrosilylation through poly[(4-vinylphenyl)dimethylsilanol] (PVPDMS) and liquid crystal monomer cholesteryl 4-[4-(undec-10-enoyloxy)benzoyloxy]phenyladipate (M). The LC-PS had high purity, high molecular weight, narrow distribution, good thermal stability, and typical thermotropic liquid crystallinity (S-A phase), as shown by (HNMR)-H-1 analyses, size exclusion chromatography (SEC), thermogravimetry analysis (TGA), differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). The glass-transition temperature (T-g) of LC-PS was much lower than that of PVPDMS, while the clearing point (T-i) of LC-PS significantly increased compared with M.