聚烯丙基环戊二烯基硅烷的电化学合成与表征

Synthesis and Characterization of Polyallylcyclopentadienylsilane by Electropolymerization

采用电化学合成法，以三氯甲基硅烷、氨丙烯和环戊二嫦为单体合成出聚烯丙基环戊二烯基硅烷。通过红外光谱（FT-IR），紫外光谱（UV），核磁共振（^1H-NMR）和热重法（TG）等表征了其结构，测定了产物的双键保留率，并对产物进行交联固化。结果表明，产物的双键保留率为11．2％，烯丙基和环戊二烯基的引入使其最大吸收波长发生了宽化和很大幅度的红移，在近紫外．可见光区有很强的荧光，最大发射波长λem约为500nm，具有良好的发光性能；双键的引入使其具有良好的热性能，交联固化后有较高的质量保留率。

Polyallylcyclopentadienylsilane was synthesized by the electroreduction of trichloromethylsilane, allyl chloride and cyclopentadiene. The structures of the polymer were characterized by means of Fourier transform infrared spectrum （ FT-IR ）, ultraviolet （ UV ）, 1H nuclear magnetic resonance spectrum （ ^1H-NMR ） and thermogravimetric （TG）. Its double-bond content was determined and the cross-linking was also studied. The results show that the retaining ratio of double bonds is 11.2%. The introduction of cyclopentadienyl and allyl makes its maximum absorption wavelength widen and had a high degree of red shift. It has a strong fluorescence emission in the near UV-visible light region, and maximum wavelength λcm about 500rim. Such polysilane can also be used as ceramic precursor due to its good thermal performance and higher mass retaining ratio.