微型多孔材料
微乳液
金属有机骨架
劈理(地质)
化学
堆积
组合化学
材料科学
化学工程
纳米技术
有机化学
肺表面活性物质
断裂(地质)
工程类
吸附
复合材料
作者
Jian Yang,Ké Li,Jinlou Gu
出处
期刊:ACS materials letters
[American Chemical Society]
日期:2022-01-21
卷期号:4 (2): 385-391
被引量:32
标识
DOI:10.1021/acsmaterialslett.1c00797
摘要
The construction of hierarchically macro-microporous metal-organic frameworks (HMMOFs) with thin macroporous walls could afford highly accessible active sites in interconnected skeleton, while it remains a challenge so far. Herein, we achieve open channels with macroporous sizes up to 100 nm and macroporous walls of 11–12 nm in cerium-based MOFs (HMUiO-66(Ce)). Our success stems from the introduction of microemulsion-guided assembly strategy, in which columnar microemulsion was formed with P123 and F127 as costabilizers and toluene as an oil phase to template HMUiO-66(Ce). The assembly mechanism of spherical stacking and epitaxial growth modes was disclosed, hopefully setting a conceptual guideline for the design of extensive HMMOFs. The abundant Ce–OH sites on macroporous walls and free mass diffusion in macroporous channels make HMUiO-66(Ce) competent as nuclease mimic for the hydrolytic cleavage of stable phosphodiester linkages in various DNA, prefiguring their potentials in DNA scissoring-related biological applications such as gene editing, sensing, and therapeutics.
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