New Sensing Materials Based on Chemical Modulation of Work Function of Conducting Polymers

该研究项目由分析和表面化学项目支持，重点研究导电聚合物气体传感器的基本工作机制。乔治亚理工学院的Janata教授和他的同事正在进行实验，旨在探测功函数修改对掺杂聚苯胺薄膜材料在可能的气体传感器应用中的灵敏度和行为的影响。对这类传感器材料运行的化学和物理机制的详细了解将对设计更敏感和更广泛适用于许多环境监测和控制应用的气体传感器阵列非常有用。掺杂聚合物传感电极在许多痕量污染物和污染物监测中有着广泛的应用。这些传感器系统的合理设计依赖于对这些材料运行的化学和物理机制的理解。本研究项目探讨了这些装置的基本工作机制，探索了系统修改材料功函数对传感器灵敏度和选择性的影响。

This research project, supported in the Analytical and Surface Chemistry program, focusses on the understanding of the basic mechanism of operation of conducting polymer gas sensors. Experiments designed to probe the effect of work function modification on the sensitivity and behavior of doped polyaniline film materials in possible gas sensor applications are being carried out by Professor Janata and his coworkers at the Georgia Institute of Technology. A detailed understanding of the chemical and physical mechanisms of operation of this class of sensor materials will be very useful in the design of more sensitive and more widely applicable gas sensor arrays for many environmental monitoring and control applications. Doped polymer sensing electrodes find wide application in a number of trace contaminant and pollutant monitoring applications. The rational design of these sensor systems relies on an understanding of the chemical and physical mechanisms of operation of these materials. This research project addresses the fundamental mechanisms of operation of these devices, probing the effects of systematic modification of the material work function on sensor sensitivity and selectivity.