Walton, F. , Bolling, J., Farrell, A., MacEwen, J., Syme, C. D. , Gonzalez Jimenez, M. , Senn, H. M. , Wilson, C. , Cinque, G. and Wynne, K. (2020) Polyamorphism mirrors polymorphism in the liquid-liquid transition of a molecular liquid. Journal of the American Chemical Society, 142(16), pp. 7591-7597. (doi: 10.1021/jacs.0c01712) (PMID:32249557)
|
Text
213422.pdf - Published Version Available under License Creative Commons Attribution. 4MB |
Abstract
Liquid–liquid transitions between two amorphous phases in a single-component liquid have courted controversy. All known examples of liquid–liquid transitions in molecular liquids have been observed in the supercooled state, suggesting an intimate connection with vitrification and locally favored structures inhibiting crystallization. However, there is precious little information about the local molecular packing in supercooled liquids, meaning that the order parameter of the transition is still unknown. Here, we investigate the liquid–liquid transition in triphenyl phosphite and show that it is caused by the competition between liquid structures that mirror two crystal polymorphs. The liquid–liquid transition is found to be between a geometrically frustrated liquid and a dynamically frustrated glass. These results indicate a general link between polymorphism and polyamorphism and will lead to a much greater understanding of the physical basis of liquid–liquid transitions and allow the systematic discovery of other examples.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Walton, Mr Finlay and Gonzalez Jimenez, Dr Mario and Wilson, Dr Claire and Senn, Dr Hans and Syme, Dr Christopher and Farrell, Andrew and Wynne, Professor Klaas and Bolling, John |
Authors: | Walton, F., Bolling, J., Farrell, A., MacEwen, J., Syme, C. D., Gonzalez Jimenez, M., Senn, H. M., Wilson, C., Cinque, G., and Wynne, K. |
College/School: | College of Science and Engineering > School of Chemistry College of Science and Engineering > School of Engineering > Biomedical Engineering College of Medical Veterinary and Life Sciences > School of Infection & Immunity |
Journal Name: | Journal of the American Chemical Society |
Publisher: | American Chemical Society |
ISSN: | 0002-7863 |
ISSN (Online): | 1520-5126 |
Published Online: | 04 April 2020 |
Copyright Holders: | Copyright © 2020 American Chemical Society |
First Published: | First published in Journal of the American Chemical Society 142(16): 7591-7597 |
Publisher Policy: | Reproduced under a Creative Commons licence |
University Staff: Request a correction | Enlighten Editors: Update this record