Kim Hyehyun, Lah Myoung Soo
Department of Chemistry, UNIST, Ulsan 44919, Korea.
Dalton Trans. 2017 May 16;46(19):6146-6158. doi: 10.1039/c7dt00389g.
Various fabrication strategies for hollow metal-organic framework (MOF) superstructures are reviewed and classified using various types of external templates and their properties. Hollow MOF superstructures have also been prepared without external templates, wherein unstable intermediates obtained during reactions convert to the final hollow MOF superstructures. Many hollow MOF superstructures have been fabricated using hard templates. After the core-shell core@MOF structure was prepared using a hard template, the core was selectively etched to generate a hollow MOF superstructure. Another approach for generating hollow superstructures is to use a solid reactant as a sacrificial template; this method requires no additional etching process. Soft templates such as discontinuous liquid/emulsion droplets and gas bubbles in a continuous soft phase have also been employed to prepare hollow MOF superstructures.
本文综述并分类了使用各种外部模板及其特性制备中空金属有机框架（MOF）超结构的各种制造策略。也有在无外部模板的情况下制备中空MOF超结构的情况，即反应过程中获得的不稳定中间体转化为最终的中空MOF超结构。许多中空MOF超结构是使用硬模板制造的。使用硬模板制备核壳核@MOF结构后，选择性蚀刻核以生成中空MOF超结构。生成中空超结构的另一种方法是使用固体反应物作为牺牲模板；此方法无需额外的蚀刻过程。连续软相中的不连续液体/乳液滴和气相等软模板也已用于制备中空MOF超结构。
