六苯基硅烷-聚乙烯醇荧光复合薄膜的制备及传感性能

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (8): 1614.

六苯基硅烷-聚乙烯醇荧光复合薄膜的制备及传感性能

夏慧芸^1,2, 何刚², 高莉宁¹, 彭军霞², 房喻²

1. 交通铺面材料教育部工程研究中心, 长安大学材料科学与工程学院, 西安 710061;
2. 应用表面与胶体化学教育部重点实验室, 陕西师范大学化学与材料科学学院, 西安 710062

收稿日期:2010-01-15 出版日期:2010-08-10 发布日期:2010-08-10
通讯作者: 房喻, 男, 博士, 教授, 主要从事胶体与界面化学及光物理技术应用研究. E-mail: yfang@snnu.edu.cn
基金资助:
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.

Preparation and Fluorescent Sensing Applications of HPS-PVA Composite Films

XIA Hui-Yun^1,2, HE Gang², GAO Li-Ning¹, PENG Jun-Xia², FANG Yu^2*

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.

摘要/Abstract

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.

关键词: 六苯基硅烷, 荧光复合薄膜, 传感

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

TrendMD:

夏慧芸, 何刚, 高莉宁, 彭军霞, 房喻. 六苯基硅烷-聚乙烯醇荧光复合薄膜的制备及传感性能. 高等学校化学学报, 2010, 31(8): 1614.

XIA Hui-Yun, HE Gang, GAO Li-Ning, PENG Jun-Xia, FANG Yu*. Preparation and Fluorescent Sensing Applications of HPS-PVA Composite Films. Chem. J. Chinese Universities, 2010, 31(8): 1614.

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