Interfacial Chemistries of Molecular Electronic Materials: Epitaxial Ultrathin Films of Large Molecules Created by OMBE, LB and Self-Assembly Strategies

有机薄膜的外延生长可能在电子器件和化学传感器系统中具有实用价值，是本项目的研究重点，该项目由分析和表面化学计划支持。这项工作强调了对外延生长和分子组织的机制理解，并将使用真空和溶液沉积方法来形成这些薄膜。大染料分子沉积在金属、半导体和绝缘体表面的薄膜将被探索。分子堆积、多层有序、电子和光学性质之间的关系将被确定。将研究这些染料分子膜上的小分子化学吸附，并开始在这些膜上设计“分子识别位点”。该方法可用于制造多用途的分子特异性化学传感器。有机分子薄膜的可控生长在分子电子器件和高特异性化学传感器的开发中具有重要的应用价值。本研究项目的工作旨在了解控制有机薄膜生长的条件。在这些研究中，一系列的实验方法将被引入，目标是直接结合分子识别位点的薄膜组件的可控设计。

The epitaxial growth of organic thin films which may have utility in electronic devices and chemical sensor systems is the focus of the research in this project supported by the Analytical and Surface Chemistry program. The work emphasizes the mechanistic understanding of epitaxial growth and molecular organization, and will use both vacuum and solution deposition procedures to form these films. Thin films of large dye molecules deposited on metal, semiconductor, and insulator surfaces will be explored. The relationship between molecular packing, multilayer ordering, and the electronic and optical properties of these materials will be determined. Small molecule chemisorption on these dye molecule films will be investigated, and the development of designed "molecular recognition sites" on these films will be initiated. This strategy may be useful in the fabrication of versatile molecule specific chemical sensors. The controlled growth of organic molecular thin films may have important application in the development of molecular electronic devices and highly specific chemical sensors. The work of this research project is directed to developing an understanding of the conditions which control the growth of organic thin films. A range of experimental methods will be brought to bear in these studies, with the goal of the controlled design of thin film assemblies with molecular recognition sites directly incorporated.