中文摘要：

以聚乙烯醇（PVA）高分子凝胶薄膜为基质,将有机小分子发光染料六苯基硅烷（HPS）纳米粒子掺杂到PVA薄膜内,利用HPS的聚集诱导发射效应和凝胶薄膜的基质效应制备得到一种新型荧光薄膜.扫描电子显微镜观察发现该薄膜具有典型的三维网络结构;静态荧光光谱监测表明,薄膜荧光性能稳定,且荧光发射来自于无定形态和结晶态的HPS纳米粒子,其中无定形态发射居多;传感实验表明,该薄膜对芳香族化合物气体表现出了灵敏的传感性,灵敏度和猝灭效率取决于有机溶剂的挥发速度和薄膜的表面结构;结合荧光寿命测定结果和HPS纳米粒子的发光机理,推测芳香族化合物对薄膜荧光的猝灭源自其对HPS聚集体的解聚集作用;实验还表明,该薄膜对此类气体的传感呈现出良好的可逆性.

英文摘要：

A novel fluorescent film was fabricated by doping the aggregates of hexaphenylsilole（HPS） into a polyvinyl alcohol（PVA） film.It has been demonstrated that the composite film exhibited the typical three-dimensional network structure and the fluorescence emission of the film is stable,presumably the network structure of the substrate film is favorable for the stabilization of the fluorescence emission of the hybrid film through preventing the further aggregation of silole aggregates.Sensing experiments show that the photoluminescence emission of the hybrid film is highly sensitive to the presence of volatile organic compounds（VOCs）,especially benzene-like organic gases.Furthermore,the sensitivity of composite film depends on the volatility of the VOCs and surface structure of the composite film.Fluorescence lifetime measurements and the light-emitting mechanism of HPS aggregates suggest that quenching mechanism should be dissolution quenching.It is also revealed that the response of the films to VOCs in gas phase is fully reversible.