聚(甲基)(对甲氧基苯基)硅烷及其共聚物的合成与荧光性质  

Synthesis and Fluorescence of Poly(p-Methoxyphenylmethylsilane) and its coPolysilanes

作　　者：袁良正[1] 张茂根[1] 顾晓天[2] 王炳祥[1] 

机构地区：[1]南京师范大学化学与环境科学学院 [2]南京师范大学分析测试中心,南京210097

出　　处：《南京师大学报（自然科学版）》2004年第1期58-62,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：江苏省教育厅高校科研项目 (1110 90B10 1);浙江大学聚合反应工程国家重点实验室基金 (112 10 1G60 0 16);南京师范大学环境友好化学实验室开放研究基金 (1810 90H60 1);南京师范大学材料实验室资助项目资助

摘　　要：用钠缩合法合成了 (甲基 ) (对甲氧基苯基 )二氯硅烷均聚及分别与二甲基二氯硅烷、甲基苯基二氯硅烷、二苯基二氯硅烷共聚的四种聚硅烷 .用IR、H1 NMR、GPC作了结构表征 .从组成、链长和分子链对称性等方面讨论了其荧光性质有较大差异的原因 .结果表明 ,苯基对位甲氧基的给电子效应使最大荧光发射波长λmax略有红移 ,但影响并不显著 ;聚硅烷链长和分子链对称性对荧光强度的影响比较显著 ,Si—Si链较长或分子链对称性较好的聚硅烷荧光强度较大 .Poly(p-methoxyphenylmethylsilane), poly(dimethylsilane-co-p-methoxyphenylmethylsilane), poly(methylphenylsilane-co-p-methoxyphenylmethylsilane) and poly (diphenylsilane-co-p-methoxyphenylmethylsilane) were synthesized by the condensation reaction of their corresponding dichlorosilanes with sodium. The structures of the Polysilanes were characterized by means of IR, H^1NMR, and GPC. The obvious difference of their fluorescence properties was discussed in the view of their composition, chain length and symmetry of the Polysilanes. The results showed that the donating para-methoxy group on phenyl caused λ_(max), the maximum emitting wave length, of a Polysilane a little Einstein shift, but not notable. The chain length and symmetry of a Polysilane have a remarkable effect on their fluorescence strength, a Polysilane with a longer Si—Si chain or better symmetry has a stronger fluorescence.

关 键 词：钠缩合法 甲基二氯硅烷 对甲氧基苯基二氯硅烷 合成 荧光性质 聚硅烷 非线性光学材料 

分 类 号：O634.41[理学—高分子化学] TN104.3[理学—化学]