Supplement for Women, Minority, and Handicapped Under- graduates: Enhanced Sensitivity Chemical Microsensors Fabricated from Polymeric Phtalocyanine L-B Films

这项研究的长期目标是批判性地研究 性能与结构的关系 Langmuir-Blodgett（L-B）薄膜的结构和形貌及其 前体单层，以确定的先决条件 获得具有改善的性能的L-B膜的条件， 用作化学微传感器。 电子电荷的输运 通过酞菁L-B膜是非常敏感的， 酞菁单元的形态或组织。 因此，必须表征和控制 多层膜的形态，以优化 电响应性能 在这个项目中注意 重点是表征单层和L-B膜，进一步 开发和应用现场光学诊断技术， 特别是激光荧光技术， 单层微观均匀性和形态。 通过仔细 控制和确定的形态和结构， 酞菁薄膜，调查人员将在一个独特的 位置，以确定传感器响应之间的关系 和L-B膜形态。 基于超薄电阻器的化阻技术的发展 沉积在平面微电极上的有机半导体薄膜 由Langmuir-Blodgett（L-B）技术的阵列提供了 提高了检测化学气体的灵敏度， 工业和技术重要性。 这个项目，是 成功，应有助于改进气敏设计 用于各种应用的薄膜。

The long-term goal of this research is to critically examine the relationship between the performance properties and the structure and morphology of Langmuir-Blodgett (L-B) films and their precursor monolayers in order to determine the prerequisite conditions for obtaining L-B films having improved properties for use as chemical microsensors. The transport of electronic charge through a phthalocyanine L-B film is extremely sensitive to the morphology or organization of the phthalocyanine units. Therefore, it is essential to characterize and control the morphology of the multilayer film in order to optimize the electrical response performance. Attention in this project focuses on characterizing monolayer and L-B films by further developing and applying in-situ optical diagnostic techniques, in particular, laser fluorescence techniques, to monitor the monolayer microhomogeneity and morphology. By carefully controlling and determining the morphology and structure of the phthalocyanine films, the investigators will be in a unique position to determine the relationship between sensor response and L-B film morphology. The development of chemiresistor technology based on very thin organic semiconductor films deposited onto planar microelectrode arrays by the Langmuir-Blodgett (L-B) technique offers the advantage of enhanced sensitivity to detect chemical gases of industrial and technological importance. This project, is successful, should help in the design of improved gas-sensitive films for a variety of applications.