中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Phase structure and transitions in a poly(methyloctadecylsilane) oligomer

文献类型:期刊论文

作者Wu, ZM; Xie, FC; Hu, ZJ; Liu, JP; Du, BY; He, TB
刊名POLYMER
出版日期2001-02-01
卷号42期号:3页码:1047-1053
关键词Polysilane Conformation Crystallization
ISSN号0032-3861
英文摘要A poly(methyloctadecylsilane) oligomer was synthesized by a typical Wurtz coupling reaction. Upon cooling, three transitions were observed at temperatures of 39.9, 37.5 and 33.9 degreesC at a rate of 2.5 degreesC/min in differential scanning calorimetry (DSC). The first transition, with enthalpy change of 0.47 kT/mol and supercooling of 0.2 degreesC, was characteristic of the conformational change in the Si-Si backbone into an all-trans conformation, which was detected by temperature-dependent Fourier transform infrared (FT-FR) spectroscopy. The second and the third transitions with large supercooling were identified as the formation of two-dimensional hexagonal crystal packing and three-dimensional two-chain orthorhombic crystal packing, respectively. The crystal structure was determined by the combination of WAXD and transmission electron microscopy (TEM) experiments. (C) 2000 Elsevier Science Ltd. All rights reserved.
语种英语
WOS记录号WOS:000089962500022
出版者ELSEVIER SCI LTD
源URL[http://ir.iccas.ac.cn/handle/121111/76733]  
专题中国科学院化学研究所
通讯作者He, TB
作者单位Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式
GB/T 7714
Wu, ZM,Xie, FC,Hu, ZJ,et al. Phase structure and transitions in a poly(methyloctadecylsilane) oligomer[J]. POLYMER,2001,42(3):1047-1053.
APA Wu, ZM,Xie, FC,Hu, ZJ,Liu, JP,Du, BY,&He, TB.(2001).Phase structure and transitions in a poly(methyloctadecylsilane) oligomer.POLYMER,42(3),1047-1053.
MLA Wu, ZM,et al."Phase structure and transitions in a poly(methyloctadecylsilane) oligomer".POLYMER 42.3(2001):1047-1053.

入库方式: OAI收割

来源:化学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。