Crystallographic Observation of Dynamic Gas Adsorption Sites and Thermal Expansion in a Breathable Fluorous Metal-Organic Framework

被引：217

作者：

Yang, Chi ^{[1
]}

Wang, Xiaoping ^{[1
]}

Omary, Mohammad A. ^{[1
]}

机构：

[1] Univ N Texas, Dept Chem, Denton, TX 76203 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 14期

基金：

美国国家科学基金会;

关键词：

adsorption; crystal breathing; fluorinated ligands; metal-organic frameworks; thermal expansion; SEPARATION; SORPTION; SOLIDS; DESIGN; MIL-53;

D O I：

10.1002/anie.200804739

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Playing accordion: Cooling a single crystal of a microporous fluorous metal-organic framework under ambient atmosphere leads to very large breathing upon gas adsorption, during which multiple N2 molecules are filled into channels and cages (see picture). While the framework exhibits remarkable positive thermal expansion under vacuum, a gigantic apparent negative thermal expansion takes place when the crystal is exposed to N2 at ambient pressure. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：2500 / 2505

页数：6

共 35 条

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[2]

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