基于纳米材料多模式分子识别传感器研究

项目名称： 基于纳米材料多模式分子识别传感器研究

项目编号： No.20875066

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 武器工业

项目作者： 吕弋

作者单位： 四川大学

项目金额： 35万元

中文摘要： 各种基于纳米材料的气体传感器在特定指标实时监测分析中越来越体现优势，为满足日益增长的检测需求，一方面人们在继续致力于开发和合成具有高传感特性的材料，另一方面越来越多的努力被投入到新的传感原理模式上的研究中。本项目以突破传统的单一化学传感模式，建立基于纳米材料表面包括光谱信息、电学信息在内的多模式协同分子识别传感器为目标，首先开展了水热具有高气敏特性的半导体氧化物在内的多种传感材料合成研究，并深入探究了挥发性有机物分子在纳米材料表面的吸附反应中所引起的发光光谱特征和电学信号等相关信息，初步获得了分子在材料表面的响应机制及其与纳米传感材料结构之间的相关联系机制。在此基础上，完成基于光学和电学双模式协同识别传感器的检测系统设计和制作，成功建立了基于纳米材料表面分子发光和光电压二维信号协同作用的分子识别新型传感原理。该传感模式与传统的单一识别模式相比，增加了识别样品分子的信息，提升了传感器识别能力，并在模糊识别领域具有重要应用前景。

中文关键词： 多模式识别；气体传感器; 纳米材料；发光

英文摘要： In recent years,gas sensors based on nanomaterials have found their niche among modern analytical instruments when real-time determination of the concentration of specific sample constituents is required. Furthermore, development of sensors with new capabilities is driven by the ever-expanding monitoring needs of a wide variety of species in gases. Therefore, many scientists poured their attentions on the exploration of novel sensing materials with satisfied capacities and novel sensing transduction principles. In the present project, we aimed to develop a novel multi-transducer sensing principle based on the spectrometric and electrometric signals on the nanomaterials. Many efforts in the innovation of the methodologies, the exploration of new sensing materials and the mechanism studies were presented to synthesis of semiconducting metal oxides, and then the detailed discussions on the influences of size, shape, dimension and other parameters on the gas sensing properties, the correlation of material structure and luminescence property were also completed. Based on the above-mentioned explorations, a novel gas sensing system based on joint action between optical signal and electronic signal was successfully established. The present multi-transducer sensing system indicated a excellent capability and a promising application in fuzzy pattern recognition.

英文关键词： Multi-transducer; Gas sensors; Nanomaterials; Luminescence