Conductive-Polymer Filaments for Sensors

摘要-Barkey-SGER本征导电聚合物有许多技术应用。电化学制备本征导电聚合物的独特优势包括能够高保真地再现表面结构。电化学制造的导电聚合物微丝将作为传感器的潜在应用进行评估。其应用原理是聚合物电导率与氧化态和被吸附化合物的掺杂效应有关。评估将重点放在聚合物导电性对完全和不完全燃烧气体的不同响应上，后者充当还原剂，应降低灯丝的导电性。用聚酰亚胺在高度有序的聚四氟乙烯薄层上进行电氧化聚合，制备了直径小于100纳米的聚3-甲基噻吩丝。聚合物以细丝的形式生长，跟随聚四氟乙烯层的微结构，产生规则的阵列或栅格。细丝的小尺寸使材料的扩散反应非常迅速。该探索性项目将确定该工作原理能否应用于烟道气中不完全燃烧产物的检测，并为这一新结构的进一步开发和应用奠定基础。

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.