Publication Type
Journal
Journal Name
Angewandte Chemie International Edition
Publication Date
Page Numbers
2500 to 2505
Volume
48
Issue
14
Abstract
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.
