一种超支化聚硅烷的合成和性能  

SYNTHESIS AND CHARACTERIZATION OF A HYPERBRANCHED POLYSILANE

作　　者：于江[1] 张正华[1] 倪宇[1] 卢彦兵[1] 熊远钦[1] 徐伟箭[1] 

机构地区：[1]化学/生物传感和化学计量学国家重点实验室湖南大学化学化工学院,长沙410082

出　　处：《高分子学报》2007年第1期81-84,共4页Acta Polymerica Sinica

基　　金：湖南大学化学/生物传感和计量学国家重点实验室开放基金(基金号200403)资助项目

摘　　要：近年来，光电高分子的研究由于其在发光二极管、太阳能电池、光信息材料、传感器等方面的潜在应用而得到了广泛重视．自从英国剑桥大学Cavendish实验室的Burroughes等首次发现聚对亚苯基亚乙烯基的电致发光现象以来，共轭聚合物作为发光材料的研究迅速引起了人们的注意．其中，作为三元色之一的蓝光材料的研究尤为重要．合适的蓝光材料要求是匹配发蓝光的能带隙、荧光光谱发射峰在蓝光区、良好的溶解性、良好的热稳定性、较高的玻璃化转变温度，此外，降低固态时的结晶度以防止荧光基团的自猝灭也是很重要的。Polysilanes are a new type of a-conjugated polymers which exhibit excellent optical properties. Here, we report a three-dimensional hyperbranched polysilane, which was synthesized via Wurtz coupling method using dichloromethylphenylsilane and trichlomethylsilane as monomers. The hyperbranched polysilane has good solubility in common organic solvents and has molecular weight Mw = 1.21 ×10^4. The structure and morphology of the hyperbranched polysilane were studied by FT-IR, NMR, XRD and SEM. The UV spectrum and PL emission spectrum indicate that the resuling polymer emits blue photolumineseenee, and the TGA and DSC suggest that the resulting polymer has good thermal stability and high glass transition temperature. All these make the hyperbranched polysilane a good optical material.

关 键 词：超支化聚硅烷 武兹偶联法 光致蓝光 

分 类 号：O634.41[理学—高分子化学]