Conductive-Polymer Filaments for Sensors

导电性聚合物有许多技术应用。电化学制造本导电性聚合物的独特优势包括能够高保真地再现表面结构。电化学制备的导电聚合物微丝将被评估作为传感器的潜在应用。其应用原理是聚合物电导率对氧化态的依赖性和所吸收化合物的掺杂效应。评估将侧重于聚合物电导率对完全和不完全燃烧气体的不同反应，后者作为还原剂，应降低长丝的电导率。通过电氧化聚合，在高度有序的聚四氟乙烯薄层上制备了直径小于100纳米的聚（3-甲基噻吩）细丝。聚合物以细丝的形式生长，细丝遵循聚四氟乙烯层的微观结构，产生规则的阵列或光栅。细丝的小尺寸使得材料的扩散反应非常快。这一探索性项目将确定操作原理是否可用于检测烟气中的不完全燃烧产物，并为进一步开发和应用这种新结构奠定基础。

Abstract - Barkey - SGER There are a number of technological applications of intrinsically conductive polymers. The unique advantages of electrochemical fabrication of intrinsically conductive polymers include the ability to reproduce surface structure with high fidelity. Electrochemically fabricated conductive-polymer microfilaments will be evaluated for potential application as sensors. The principle of the application is the dependence of polymer conductivity on oxidation state and the doping effect of absorbed compounds. The evaluation will focus on the differential response of polymer conductivity to complete and incomplete combustion gases, where the latter act as reducing agents which should lower the conductivity of the filaments. Filaments of poly (3-methyl thiophene) of diameters less than 100 nanometers have been fabricated by the PI by electrooxidative polymerization across a highly ordered poly(tetra fluoroethylene) thin-layer. The polymer grows in the form of filaments which follow the microstructure of the PTFE layer, producing a regular array or grating. The small size of the filaments allows very rapid diffusive response of the material. This exploratory project will determine if the principle of operation can be applied to detection of incomplete combustion products in flue gases, and lay a foundation for further development and application of this new structure.