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

该研究项目在分析和表面化学计划的支持下，重点是对导电聚合物气体传感器的基本操作机制的理解。 实验旨在探讨功函数修改的影响掺杂聚苯胺薄膜材料的灵敏度和行为在可能的气体传感器的应用正在进行的Janata教授和他的同事在格鲁吉亚理工学院。 详细了解这类传感器材料的化学和物理工作机制，将是非常有用的设计更灵敏和更广泛适用的气体传感器阵列，许多环境监测和控制应用。掺杂的聚合物感测电极在许多痕量污染物和污染物监测应用中具有广泛的应用。 这些传感器系统的合理设计依赖于对这些材料的化学和物理操作机制的理解。 该研究项目解决了这些设备的操作的基本机制，探测系统修改材料的功函数对传感器的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.