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

为了有效地利用甲基氯硅烷直接合成过程中的副产物乙硅烷资源，本研究将乙硅烷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（光致抗蚀剂、有机半导体等）的新功能。因此，制备了四种类型的新型有机硅聚合物（A-B），并公开了它们独特的物理化学性质。聚合物A-B在250- 330 nm区域显示出特征吸收带。对A-C的辐照在反应的早期阶段得到较低分子量的聚合物，其在进一步的反应中再次变成较高分子量的聚合物。结果发现，在光解的聚合物产生亚甲硅烷基物种，以及甲硅烷基自由基。A-D的粒度分析表明，聚合物用作陶瓷填料，其中A导致最小的重量损失，产生40-50%的SiC组分。研究了碘和间氯过苯甲酸与A的反应，分别得到了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.