Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (8): 1614.

• Articles • Previous Articles     Next Articles

Preparation and Fluorescent Sensing Applications of HPS-PVA Composite Films

XIA Hui-Yun1,2, HE Gang2, GAO Li-Ning1, PENG Jun-Xia2, FANG Yu2*   

  1. 1. Engineering Research Center of Transportation Materials, Ministry of Education, School of Materials Science and Engineering, Chang′an University, Xi′an 710061, China;
    2. Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, China
  • Received:2010-01-15 Online:2010-08-10 Published:2010-08-10
  • Contact: FANG Yu. E-mail: yfang@snnu.edu.cn
  • Supported by:

    中央高校基本科研业务费专项资金(批准号: CHD2009JC147, CHD2009JC132)、国家自然科学基金(批准号: 20773083, 20927001, 20903015)、科技部“八六三”计划项目(批准号: 2007AA03Z349)和长安大学基础研究支持计划基金资助.

Abstract: 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.

Key words: Hexaphenylsilole, Fluorescence composite film, Sensing

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