中文摘要：

通过Heck—SonogashFT—IRa偶合法合成了含五蝶烯（Pentiptycene）基团的新型荧光共轭聚合物——聚对苯撑乙炔撑衍生物（PPE），分别为：侧链不对称烷氧基取代的PPE1和侧链单、双一丙基七异丁基多面体齐聚倍半硅氧烷（POSS）取代的PPE2、PPE3。采用FT—IR、^1H—NMR、UVVis、荧光发射光谱、TGA等仪器对PPE的结构和性能进行了分析测试，并研究了其与TNT之间的荧光响应。结果表明：PPE1、2、3均表现出良好的荧光性能及较高的荧光量子产率；对TNT显示出很高的猝灭敏感性，其荧光猝灭效率与TNT的浓度曲线表现为非线性关系，特别是侧链引入POSS的PPE2，提高了PPE的荧光量子产率及与TNT荧光猝灭效率，同时，PPE的热稳定性得到明显提高。

英文摘要：

Three kinds of novel fluorescent conjugated poly（phenylene-ethynylene）（PPE） containing pentiptycene group were synthesized via Heck-Sonogash FT-IRa coupling method. They were PPE 1 with dissymmetrical alkoxyl substitutes and PPE 2, PPE 3 with nomo-, di-polyhedral oligomeric silsesquioxanes （POSS） substitutes on the FT IR side chains was prepared. The structure and properties of copolymers were characterized by FT-IR, ^1H-NMR, UV Vis, fluorescence emission spectra, TGA, and the fluorescence response to TNT was investigated. Results indicated that PPE 1. 2. 3 showed good fluorescence properties, high fluorescence quantum yield, and excellent quenching sensitivity to TNT. The fluorescence quenching efficiency with TNT concentration curve showed a nonlinear relationship, especially, the PPE 2 with a single POSS on the side chain improved the fluorescence quantum yield and fluorescence quenching efficiency for TNT. TGA test showed that the thermal stability of the PPE 2.3 with POSS were significantly higher than that of the PPE 1 without POSS.