RUI: Enabling Rational Design of Smart Interfaces Incorporating Metal-Organic Coordinated Assemblies

RUI：使智能界面的合理设计能够实现金属有机配位组装（CHE-1508244）玛丽E.安德森，霍普学院公共摘要金属有机框架（MOFs）是结晶，多孔材料具有极高的表面积，表现出巨大的潜力，化学传感，反应催化，气体存储。 对于这些应用中的许多应用，需要在支撑材料上直接生长的MOF薄膜的结合。 为了有效地制造具有利用这些MOF材料特性的智能界面的设备，了解薄膜形成的基本原理至关重要。 本研究系统地研究薄膜MOF生长，并开发各种技术相关衬底上的低能量处理技术的设计规则。 这些设计规则，用于定制薄膜结构和组成，用于1）调整薄膜的光学，电学和机械性能，以及2）开发将MOF薄膜集成到化学传感和收集太阳能的尖端技术中的制造技术。 本科生积极参与研究的各个方面，为他们提供材料化学，表面科学和现代分析仪器的跨学科领域的经验。 技术摘要NSF化学部的大分子、超分子和纳米化学项目获得了该奖项，支持霍普学院的安德森博士的研究，以研究表面锚定金属有机框架（SurMOF）的形成，并将其直接集成到化学传感和光子应用的器件结构中。 研究了具有递增复杂性的不同系统（即HKUST-1、M0 F-14、M0 F-5、IRM 0 F-3）的膜形成。 沉积变量，如温度，时间和沉积方法（即逐层，共沉积，籽晶沉积）的影响进行了研究。 研究扩展到了解沉积在不同的基板上的技术相关性，如氧化物材料（即SiO2，ITO，Al 2 O3）和柔性聚合物材料。 合理的设计规则的生长启动以及抑制的确定。 扫描探针显微镜（SPM）和表面特异性光谱（即椭圆偏振法，FT-IR）用于表征SurMOF膜生长，以确定沉积条件的影响，特别关注在衬底-膜界面处形成的基础层。 使用先进的SPM模式（即定量纳米力学映射，导电探针），电化学（即循环伏安法，计时库仑法），和光谱电化学表征膜的机械，电气和光学性能进行评估。通过遵循开发的设计规则，了解材料特性，并采用膜模板技术，这项研究将SurMOF膜作为智能界面集成到用于化学传感和太阳能收集的测试台结构中。

RUI: Enabling Rational Design of Smart Interfaces Incorporating Metal-Organic Coordinated Assemblies (CHE-1508244)Mary E. Anderson, Hope CollegePublic AbstractMetal-organic frameworks (MOFs) are crystalline, porous materials with extremely high surface areas that exhibit great potential for chemical sensing, reaction catalysis, and gas storage. For many of these applications, the incorporation of MOF thin films grown directly on supporting materials is required. To effectively fabricate devices with smart interfaces that harness the properties of these MOF materials, it is crucial to understand the fundamentals of film formation. This research systematically investigates thin film MOF growth and develops design rules for low-energy processing techniques on a variety of technologically-relevant substrates. These design rules, for tailoring film structure and composition, are utilized 1) to tune the optical, electrical, and mechanical properties of the film and 2) to develop fabrication techniques that integrate MOF thin films into cutting-edge technologies for chemical sensing and harvesting solar energy. Undergraduate students are actively engaged in all aspects of the research, providing them with experience in the interdisciplinary areas of materials chemistry, surface science, and modern analytical instrumentation. Technical AbstractWith this award the Macromolecular, Supramolecular and Nanchemistry Program of the NSF Chemistry Division supports the research of Dr. Anderson at Hope College to investigate the formation of surface-anchored metal-organic frameworks (SurMOF) for integration directly into device architectures for chemical sensing and photonic applications. Film formation is studied for different systems with incrementally increasing complexity (i.e. HKUST-1, MOF-14, MOF-5, IRMOF-3). Effects of deposition variables such as temperature, time, and deposition methods (i.e. layer-by-layer, co-deposition, seeded deposition) are investigated. Studies are extended to understand deposition on different substrates of technological relevance, such as oxide materials (i.e. SiO2, ITO, Al2O3) and flexible polymeric materials. Rational design rules for growth initiation as well as inhibition are determined. Scanning probe microscopy (SPM) and surface-specific spectroscopies (i.e. ellipsometry, FT-IR) are used to characterize SurMOF film growth to determine the effect of deposition conditions with particular focus on foundational layers forming at the substrate-film interface. Mechanical, electrical, and optical properties of films are evaluated using advanced SPM modes (i.e. quantitative nanomechanical mapping, conductive probe), electrochemistry (i.e. cyclic voltammetry, chronocoulometry), and spectroelectrochemical characterization. By following developed design rules, understanding material properties, and employing membrane-templating techniques, this research integrates SurMOF films as smart interfaces into test-bed structures fabricated for chemical sensing and solar energy harvesting.