Bibliographic Metadata
Bibliographic Metadata
- TitleMobilization upon Cooling
- Author
- Is part ofAngewandte Chemie (International ed. in English), Vol. 60, page 19117-19122
- Published
- LanguageEnglish
- Document typeJournal Article
- URN
- DOI
Restriction-Information
- The document is publicly available on the WWW
Links
- Social MediaShare
- ReferenceNo Reference available
- IIIF
Files
Classification
Abstract
Phase transitions between different aggregate states are omnipresent in nature and technology. Conventionally, a crystalline phase melts upon heating as we use ice to cool a drink. Already in 1903, Gustav Tammann speculated about the opposite process, namely melting upon cooling. So far, evidence for such "inverse" transitions in real materials is rare and limited to few systems or extreme conditions. Here, we demonstrate an inverse phase transition for molecules adsorbed on a surface. Molybdenum tetraacetate on copper (111) forms an ordered structure at room temperature, which dissolves upon cooling. This transition is mediated by molecules becoming mobile, i.e., by mobilization upon cooling. This unexpected phenomenon is ascribed to the larger number of internal degrees of freedom in the ordered phase compared to the mobile phase at low temperatures. © 2021 Wiley-VCH GmbH.
Stats
- The PDF-Document has been downloaded 3 times.
License/Rightsstatement
