Liquid phase epitaxy (LPE) of functionalized SURMOFs for application in Gas Chromatography

功能化 SURMOF 的液相外延 (LPE) 在气相色谱中的应用

• 批准号: 203030376
• 负责人: Professor Dr. Roland A. Fischer
• 金额: --
• 依托单位: Institut für Physikalische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/203030376?language=en
• 关键词: Liquid; phase; epitaxy; LPE; functionalized

SURMOFs are crystalline, oriented thin films of Metal Organic Frameworks (MOFs) which are deposited at the surface of given substrates (e.g. modified by Self-assembled organic Monolayers, SAMs) by employing a step by step liquid phase epitaxial growth scheme (i.e. layer by layer growth, lbl). The lbl deposition involves the Controlled SBU Approach (CSA; SBU = Secondary Building Unit). The goal of the project outlined in this proposal is the transfer of the basic results achieved in the first funding period to functionalized MOF thin films for applications in selective adsorption and chromatography. Such fu-SURMOFs (fu = functionalized) may contain suitably chosen side groups at the organic linkers of the framework in order to tailor the adsorption properties for guest molecules or analytes. Various kinds of heterostructures will be fabricated in which the functionality and substitution pattern at the linkers in combination with the deposition sequence and orientation of the MOF layers are varied (multivariate fu-SURMOFs). The structural and adsorption properties of the SURMOFs will be investigated (i.e. adsorption isotherms, diffusion constants of guest molecules). Optimized SAMs and lbl growth conditions, which are particularly suited for the fabrication of SURMOFs on oxide surfaces (e.g. SiO2), will be developed.

SURMOF是金属有机框架（MOF）的结晶取向薄膜，其通过采用逐步液相外延生长方案（即，逐层生长，lbl）沉积在给定衬底（例如，通过自组装有机单层，SAM改性）的表面处。LBL沉积涉及受控SBU方法（CSA; SBU =二级建筑单元）。本提案中概述的项目目标是将第一个资助期内取得的基本成果转移到功能化的MOF薄膜上，用于选择性吸附和色谱。这样的fu-SURMOF（fu =官能化的）可以在骨架的有机连接体处含有适当选择的侧基，以便定制客体分子或分析物的吸附性质。将制造各种异质结构，其中连接体处的官能度和取代模式与MOF层的沉积顺序和取向相结合是变化的（多变量fu-SURMOFs）。将研究SURMOFs的结构和吸附性质（即吸附等温线，客体分子的扩散常数）。优化的自组装膜和lbl生长条件，这是特别适合于制造SURMOFs的氧化物表面（如二氧化硅），将开发。