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

9900855 TalhamThis项目涉及一个完整的研究超分子组装纳米尺度的物体在空气/水界面的朗缪尔-布洛杰特槽。它分为六项任务：（1）二维网络和（2）在空气/水界面制备分子正方形;（3）制备和表征前体金属络合物，并解决诸如络合物对水解的稳定性和缩合反应动力学等因素;（4）利用诸如温度、酸度和反应物浓度的变量以及助表面活性剂的存在来调节界面缩合反应;（5）使用包括傅立叶变换红外光谱、X射线光电子光谱和原子力显微镜在内的技术表征空气/水界面处的膜形成;以及（6）解决未来的方向，例如固体载体上的膜，以及调整物理性质。纳米尺度物体的许多技术应用，例如包括分子水平探针、换能器、导线、接触、绝缘体和屏蔽的功能性电子纳米结构，可以使用涉及分子组装的化学控制的“自下而上”方法来工程化，以通过化学设计来实现这些功能性纳米结构的合成。需要对基础科学有更深入的理解来推进这些能力。在这些领域接受培训的学生可能会面临一个诱人的就业市场，因为全球竞争力正在推动新兴产业的发展。

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.