Surface Architecture to Control Guest Behavior in Monolayers for Sensors

用于控制传感器单层客体行为的表面架构

• 批准号: 9113544
• 负责人: Mary Wirth
• 金额: $ 59.82万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-12-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9113544&HistoricalAwards=false
• 关键词: Surface; Architecture; Control; Guest; Behavior

This project is in the general area of analytical and surface chemistry and in the subfield of interfacial structure and dynamics. During the tenure of this three-year continuing grant, Professor Wirth and her students will investigate the dynamics and orientational distributions of guest molecules interacting with covalently bonded, monolayer organic film hosts. The specific theme of this work is the control of guest behavior through structural design of the host monolayer. An understanding of guest-host monolayer interactions will facilitate the design of sensors for rapid and specific molecular recognition. The particular aspects of host monolayer architecture being investigated in this project are the development of structurally ordered monolayers, the control of defect shapes in dense monolayers, and the role of density in covalent, liquid crystal monolayers. The guest properties of orientation and rotational diffusion dynamics in these host monolayers will be probed by picosecond fluorescence anisotropy and fluorescence microscopy. Professor Wirth and her students will derive corroborative data from scanning tunneling microscopy and ellipsometric and contact angle measurements. %%% This research furthers the basic understanding of guest molecules with covalently bound thin film hosts that is essential to the rational design of sensor devices which have a significant degree of sensitivity and molecular selectivity.

这个项目是在一般地区的分析和表面 化学和界面结构的子领域， 动力学 在这三年的持续赠款期间， 沃思教授和她的学生将调查动态， 客体分子的取向分布 共价键合的单层有机膜主体。 具体 这项工作的主题是通过控制客人的行为， 宿主单层的结构设计。 了解 客体-主体单层相互作用将促进 用于快速和特异性分子识别的传感器。 的 宿主单层结构的特定方面 在这个项目中调查的是结构的发展， 有序单分子膜中缺陷形状的控制 单分子膜，以及密度在共价液晶中的作用 单层。 客体的取向和转动性质 在这些主机单层扩散动力学将探测 皮秒荧光各向异性和荧光显微镜。 沃思教授和她的学生们将得出确凿的数据 从扫描隧道显微镜和椭圆偏振和接触 角度测量 %%% 这项研究进一步加深了对客体分子的基本认识 与共价结合的薄膜主体，这是必不可少的 合理设计的传感器设备具有显着程度 灵敏度和分子选择性。