Inorganic Thin Films Deposited on Chemically Modified Surfaces by Pulsed Laser Vaporization

本项目将研究利用脉冲激光蒸发在化学修饰表面上沉积的无机薄膜。这项工作将在西班牙西方学院的艾琳·M·西班牙博士的指导下进行，该研究计划补助金由分析和表面化学计划以及化学部特别项目办公室提供支持。通过正硫醇的自组装将在Au(111)表面上放置一层有机层。随后，将在本地建造的真空系统中使用脉冲激光蒸发将过渡金属硫化物薄膜沉积到自组装单分子膜(SAM)上。转移到环境条件下后，薄膜的形貌和结构将通过原子力显微镜(AFM)成像。西班牙博士和她的本科生们的这项研究的长期目标是了解无机薄膜在化学修饰的衬底上的生长和成核。涉及层状结构的薄膜技术对微电子、粘合剂和润滑剂行业至关重要。这些膜层之间的界面特性对性能至关重要。这项工作的重点是发展对沉积在固定在金属上的有机薄膜上的无机薄膜之间的界面的理解。这些研究的结果将促进我们对这些界面结构的理解，并可能导致新的层状材料的制造。

This project will investigate inorganic thin films deposited on chemically modified surfaces using pulsed laser vaporization. The work will be carried out under the direction of Dr. Eileen M. Spain at Occidental College under this Research Planning Grant supported by the Analytical and Surface Chemistry Program and the Office of Special Projects in the Chemistry Division. An organic layer will be placed on a Au(111) surface by self-assembly of n-alkanethiols. This will be followed by depositing thin films of transition metal chalcogenides onto the self-assembled monolayer (SAM) using pulsed laser vaporization in a vacuum system which will be locally constructed. After transfer to ambient conditions, the film morphology and structure will be imaged by atomic force microscopy (AFM). The long range goal of this research by Dr. Spain and her undergraduate students is to understand the growth and nucleation of inorganic thin films on chemically modified substrates. Thin film technology involving layered structures is of the utmost importance to the microelectronics, adhesive, and lubricant industries. The properties of the interface between these film layers are critical to performance. The focus of this work is to develop an understanding of the interface between an inorganic film deposited on top of an organic film anchored to a metal. Results from these studies will advance our understanding of the structure of these interfaces and could lead to the manufacture of new layered materials.