Publication
Title
Dynamic disorder in the crystal structure of an organic semiconductor : an unusual phase transition involving the heat capacity
Author
Abstract
(E,E)-1-[2-(4-Nitrophenyl)ethenyl]-4-[2-(2,4-dimethoxyphenyl)ethenyl]benzene was characterised by X-ray diffraction and shown to be dynamically disordered at room temperature. The structure was re-determined over a range of temperatures to infer the thermodynamic parameters related to this disorder. A phase transition of third order according to the Ehrenfest classification scheme was discovered. To the best of our knowledge, this is the first experimentally observed phase transition of formal third order. It can be explained by the involvement of long-range lattice vibrations.
Language
English
Source (journal)
Chemistry: a European journal. - Weinheim
Publication
Weinheim : 2011
ISSN
0947-6539
Volume/pages
17:3(2011), p. 912-919
ISI
000287259700024
Full text (Publishers DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.03.2011
Last edited 25.03.2017
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