Formation of Metal-Organic Frameworks on Metal Ion-Doped Polymer Substrate: In-Depth Time-Course Analysis using Scanning Electron Microscopy
Formation of Metal-Organic Frameworks on Metal Ion-Doped Polymer Substrate: In-Depth Time-Course Analysis using Scanning Electron Microscopy
复制标题
金属离子掺杂聚合物基底上金属有机框架的形成：使用扫描电子显微镜进行深入时程分析
DOI：
10.1021/acs.langmuir.9b01676
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发表时间：
2019
期刊：
影响因子：
3.9
通讯作者：
Kensuke Akamatsu
中科院分区：
文献类型：
--
作者：
Takaaki Tsuruoka;Manami Hata;Shoya Hirao;Takashi Ohhashi;Yohei Takashima;Kensuke Akamatsu
基于力学和动力学分析，研究了金属离子掺杂聚合物为前驱体和载体的金属有机骨架(MOF)的生长。通过改变反应温度、有机配体和成核促进剂的浓度进行了研究。以NH2-MIL-53(Al)骨架为模型体系，系统研究了四方和棒状NH2-MIL-53(Al)晶体在衬底上的形成机理。反应早期的成核速率是决定NH2-MIL-53(Al)晶体薄膜表面形貌的主要因素，改变有机配体的浓度和使用吡啶添加剂证实了这一点。这些结果为理解成核速率对控制MOF晶体薄膜形貌和结构能力的影响提供了一个基本的理解。
The growth of metal–organic frameworks (MOFs) on a metal ion-doped polymer as a precursor and support substrate was investigated based on mechanistic and kinetic analyses. The studies were performed by varying the reaction temperature and the concentrations of the organic ligand and nucleation-promoted additive. Using the NH2-MIL-53(Al) framework as a model system, a systematic study of the mechanism of formation of tetragonal- and rod-shaped NH2-MIL-53(Al) crystals on the substrate was performed. The nucleation rate in the early stage of the reaction is a major factor in determining the surface morphology of the resultant NH2-MIL-53(Al) crystal films, as confirmed by changing the concentration of organic ligands and by employing pyridine additives. These results provide a fundamental understanding of the influence of the nucleation rate on the ability to control the morphology and structure of MOF crystal films.