【作者】 牛庆媛； 王瑞珍； 吴文辉；

【Author】 NIU Qing-yuan,WANG Rui-zhen,WU Wen-hui (School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China)

【机构】 北京理工大学材料学院；

【摘要】 基于荧光猝灭的荧光传感器具有检测方法简单、灵敏度高等优点成为国内外学术界的研究热点。然而,该类传感器,特别是荧光共轭聚合物薄膜传感器,检测硝基芳烃蒸气时尚存在一些缺点,薄膜态的荧光生色团之间发生π-π堆积导致荧光自猝灭,以及被测物气态分子在薄膜中扩散困难等,同时由于非选择性的荧光猝灭,致使其不能对某一特定硝基芳烃进行选择性识别。为解决上述问题,本课题组通过单分子结构设计、薄膜形貌调控、化学接枝、表面分子印迹和借助静电作用等方面来设计、制备新型荧光传感器。这些研究工作为开发高选择性、高灵敏度检测硝基芳烃的荧光传感器进行了有意义的探索性研究。更多还原

【Abstract】 Fluorescence quenching-based fluorescent sensors have attracted much attentions,due to the simply and high sensitivity.However,there are some disadvantages for the fluorescent sensors in their applications as films,such as theπ-πstacking among the fluorescent chromophores when used in film state,which would lead to the fluorescence self-quenching.The difficulty diffusion of vapor molecules in the films is another question.In addition,development of a selective sensor towards a specific nitroaromatic still remains a challenge due to the nonselective fluorescence quenching.To solve the above problems,our group designed and synthesized several novel sensors via synthesizing novel molecular structures,designing different morphologies of films,adopting "grafting to" and surface molecular imprinting technology,and using electrostatic interaction.These studies are meaningful researches for the development of novel materials for the sensitive and selective detection of nitroaromatic.更多还原