MORE ON THE STRUCTURES OF POLYPHENYLSILSESQUIOXANES
MORE ON THE STRUCTURES OF POLYPHENYLSILSESQUIOXANES作者机构:Institute of Chemistry Academia Sinica Beijing Beijing To whom correspondence should be addressed
出 版 物:《Chinese Journal of Polymer Science》 (高分子科学(英文版))
年 卷 期:1987年第5卷第4期
页 面:353-358页
核心收录:
主 题:Polyphenylsilsesquioxanes X-ray diffraction patterns Fluorescence emission spectroscopy Scanning electron microscopy
摘 要:The steric tacticity of polyphenylsilsesquioxanes is discussed based on both structure transformation consideration and the results of calculations, X-ray diffraction patterns, fluorescence emission spectroscopy, and scanning electron microscopy. All of the results show that cis-isotactic conformation is the most probable one for ladderlike polymer polyphenylsilsesquioxane though other conformations such as cissyndiotactic may also be present in the macromolecules depending upon the preparation conditions.