Supramolecular Assembly at Interfaces: Coordinate Covalent Networks and Polygons at the Air/Water Interface

界面处的超分子组装：在空气/水界面处协调共价网络和多边形

• 批准号: 9900855
• 负责人: Daniel Talham
• 金额: $ 36.26万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9900855&HistoricalAwards=false
• 关键词: Supramolecular; Assembly; Interfaces; Coordinate; Covalent

9900855TalhamThis project involves a complete study of the supramolecular assembly of nanometer scale objects at the air/water interface of a Langmuir-Blodgett trough. It is organized into six tasks: (I) Two-dimensional networks and (2) Molecular squares will be prepared at the air/water interface; (3) Preparing and characterizing the precursor metal complexes and addressing factors such as complex stability to hydrolysis and the kinetics of the condensation reactions; (4) Utilizing variables such as temperature, acidity, and reactant concentration, and presence of co-surfactants to tune the interfacial condensation reactions; (5) Characterization of film formation at the air/water interface using techniques to include Fourier Transform Infrared Spectroscopy, X-ray Photoelectron Spectroscopy, and Atomic Force Microscopy; and (6) Addressing future directions such as films on solid supports, and tuning physical properties.%%%Many of the technological applications of nanometer scale objects, such as functional electronic nano-archetictures that include molecular-level probes, transducers, wires, contacts, insulators, and shielding, can be engineered using a "bottoms-up" approach involving chemical control of molecular assembly to achieve the synthesis of these functional nanostructures by chemical design. A deeper understanding of the fundamental science is needed to advance these capabiltites. Students trained in these areas will likely face an inviting job market due to emerging industrial priorities that are being driven by global competitiveness.

9900855Talham 该项目涉及对 Langmuir-Blodgett 槽的空气/水界面处纳米级物体的超分子组装的完整研究。它分为六个任务：（I）二维网络和（2）在空气/水界面处制备分子方块； (3) 前体金属配合物的制备和表征，并解决配合物对水解的稳定性和缩合反应动力学等因素； (4) 利用温度、酸度、反应物浓度以及辅助表面活性剂的存在等变量来调节界面缩合反应； (5) 使用傅立叶变换红外光谱、X射线光电子能谱和原子力显微镜等技术表征空气/水界面处的成膜； (6) 解决未来的方向，例如固体支持物上的薄膜和调整物理性质。%%%纳米级物体的许多技术应用，例如包括分子级探针、传感器、电线、触点、绝缘体和屏蔽的功能电子纳米结构，可以使用涉及分子组装的化学控制的“自下而上”方法进行设计，以实现这些的合成 通过化学设计的功能性纳米结构。需要对基础科学有更深入的了解才能提高这些能力。由于全球竞争力推动的新兴产业优先事项，在这些领域接受过培训的学生可能会面临诱人的就业市场。