聚硅烷共聚物的合成及表征的研究

采用二甘醇二甲醚和１５－冠－５为螯合剂，根据Ｗｕｒｔｚ还原反应合成了多种聚硅烷共聚物，进行了ＧＰＣ，ＵＶ，＾１Ｈ－ＮＭＲ和ＦＴ－ＩＲ表征。发现在聚硅烷共聚物的合成中单体的投料比与产物中相应链节的共聚比相近，并对这一现象进行了初步解释；在ＦＴ－ＩＲ谱中观察到含有与硅链直接相连的侧苯基的聚硅烷的苯环骨架，在１６００ｃｍ＾－１附近的特征振动峰收缩到极弱强度，甚至消除。

STUDIES ON THE SYNTHESIS AND CHARACTERIZATION OF POLYSILANE COPLYMERS

Using diglyme and 15 crown 5 as chelants,the authors synthesized a series of polysilane copolymers by a Wurtz coupling reaction,and characterized them by the GPC,UV, 1H NMR and FT IR analysis.It was observed that in the synthesis of polysilane copolymers,on the condition of adding diglyme and 15 crown 5,the ratio of the monomers participating in the copolymerization reaction is close to that of their corresponding units in the products and a preliminary explanation was given.In the FT IR spectra of polysilanes with side phenyl groups directly attached to the Si Si chain,the characteristic vibrational peak near 1600cm -1 for the phenyl ring skeleton shrinks to extremely weak size,even disappears.