The Metal-Organic Framework Collapse Continuum: Insights from Two-Dimensional Powder X-ray Diffraction

被引：69

作者：

Dodson, Ryan A. ^{[1
]}

Wong-Foy, Antek G. ^{[1
]}

Matzger, Adam J. ^{[1
,2
]}

机构：

[1] Univ Michigan, Dept Chem, 930 North Univ Ave, Ann Arbor, MI 48109 USA

[2] Univ Michigan, Macromol Sci & Engn Program, 930 North Univ Ave, Ann Arbor, MI 48109 USA

来源：

CHEMISTRY OF MATERIALS | 2018年 / 30卷 / 18期

基金：

美国能源部;

关键词：

COORDINATION POLYMERS; SORPTION PROPERTIES; SINGLE-CRYSTAL; DESIGN; ACTIVATION; MOFS; CRYSTALLIZATION; ZN-HKUST-1; PRESSURE; EXCHANGE;

D O I：

10.1021/acs.chemmater.8b03378

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The process of activation, an essential step to reveal the porosity of metal-organic frameworks (MOFs), was examined for materials that produce surface areas in accord with prediction as well as for those failing to meet expectations. In situ two-dimensional powder X-ray diffraction, in combination with surface area measurements, was used to classify the structural outcomes of a variety of MOF activations. By modulation of activation solvent as well as linker length and flexibility, a variety of structural outcomes were obtained. In addition to pristine and amorphous products, MOFs that exhibit intermediate activation success were observed. Such MOFs were found to undergo reductions in crystallite size while varying in total amorphous content, which leads to vastly different product surface areas. Models to explain different activation outcomes are presented.

引用

页码：6559 / 6565

页数：7

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