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A route to bimodal micro-mesoporous metal-organic frameworks nanocrystals

机译:通往双峰微介孔金属有机骨架纳米晶体的途径

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摘要

To overcome the pore size constraints (pore size < 2 nm) of crystalline microporous metal-organic frameworks (MOFs), one can either reduce crystal size or create mesopore channels in the MOF crystals. Our approach does both, using a solvothermal nonionic surfactant-templated assembly of microblocks in the presence of acetic acid, which not only generates well-defined mesopore channels within the microporous MOF nanocrystals but also gives high crystallinity. Two examples were selected to illustrate our approach using [Cu _3(BTC) _2]- and [Cu _2(HBTB) _2]-based MOFs (H_3BTC = 1,3,5-benzenetricarboxylic acid; H 3BTB = 1,3,5-Tris[4- carboxyphenyl]benzene).
机译:为了克服晶体微孔金属有机骨架(MOF)的孔径限制(孔径小于2 nm),可以减小晶体尺寸或在MOF晶体中创建中孔通道。我们的方法通过在乙酸存在下使用溶剂热非离子表面活性剂为模板的微嵌段组装来实现,这不仅在微孔MOF纳米晶体内产生了明确的介孔通道,而且还提供了高结晶度。选择了两个示例来说明我们使用基于[Cu _3(BTC)_2]和[Cu _2(HBTB)_2]的MOF的方法(H_3BTC = 1,3,5-苯三甲酸; H 3BTB = 1,3,5 -三[4-羧基苯基]苯)。

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