Synthesis and Function Development of Polysilanes Using Disilane Resources obtained from the Direct Synthesis

从直接合成甲基氯硅烷的副产物二硅烷资源的有效利用出发，本文研究了二硅烷组分转化为更有用的有机硅聚合物，并开发其作为电子复合材料（光刻胶、有机半导体等）的新功能。因此，制备了四种新型有机硅聚合物（A-B），并揭示了它们独特的物理化学性质。聚合物A-B在250 ~ 330nm范围内表现出特征吸收带。A-C的辐照，在反应初期，得到了低分子量的聚合物，在进一步的反应中，又变成了高分子量的聚合物。结果表明，在光解过程中，聚合物产生了硅基基团和硅基自由基。对A- d的航空分析表明，聚合物作为陶瓷前驱体，其中A导致的重量损失最小，产生40-50%的SiC成分。还研究了A与碘和间氯过苯甲酸的反应，分别产生Si-Si键断裂产物和氧化产物。

In view of the effective utilization of disilane resources formed as the by-products in the Direct Synthesis of methylchlorosilanes, the present study has been done for the conversion of the disilane fraction into more useful organosilicon polymers and for the development of new functions of the resulting polymers as electronic composite materials (photoresists, organic semiconductors, etc.). Thus, four types of new organosilicon polymers (A-B) were produced and their unique physico-chemical properties were disclosed. Polymers A-B show the characteristic absorption band(s) in 250-330nm region. Irradiations for A-C gave, at the early stage of the reaction, lower molecular weight polymers which, on further reaction, changed to higher molecular weight polymers again. It was found that in the photolyses the polymers generate silylene species, as well as silyl radicals. The aravimetric analyses for A-D showed that polymers serve as ceramic precurs, in which A resulted in the least weight loss, yielding 40-50% of the SiC component. The reactions of A with iodine and m-chloroperbenzoic acid were also investigated, which afforded Si-Si bond scission products and oxidation products,respectively.