采用双乙炔基封端的硅氮烷单体(双(4-乙炔基苯胺基)二苯基硅烷,M1)与含不同二甲基硅基结构单元[-Si(CH3)2-,-Si(CH3)2-O-Si(CH3)2-和-Si(CH3) 2-O-Si(CH3) 2-O-Si(CH3)2-]的双溴苯基封端单体进行Sonogashira交叉偶联反应,制备出一系列含炔基有机硅杂化聚合物.通过红外(FT-IR)、核磁氢谱(1H-NMR)和凝胶渗透色谱(GPC)对聚合物的结构和分子量进行了表征,并采用热重分析(TGA)对聚合物的热性能进行了研究.结果表明,二甲基硅基结构的引入显著提高聚合物的溶解性,各组聚合物均展现出良好的热稳定性能,其中引入-Si(CH3)2-结构的聚合物具有相对最好的热稳定性.
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