A mechanism for ageing in a deeply supercooled molecular glass
(2021) In Chemical Communications 57(52). p.6368-6371- Abstract
Measurements of the decay of electric fields, formed spontaneously within vapour-deposited films ofcis-methyl formate, provide the first direct assessment of the energy barrier to secondary relaxation in a molecular glass. At temperatures far below the glass transition temperature, the mechanism of relaxation is shown to be through hindered molecular rotation. Magnetically-polarised neutron scattering experiments exclude diffusion, which is demonstrated to take place only close to the glass transition temperature.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/fc094c10-309e-4bcf-b2d6-0a61b51f5bf2
- author
- Cassidy, Andrew
; Jørgensen, Mads R.V.
LU
; Glavic, Artur ; Lauter, Valeria ; Plekan, Oksana and Field, David
- organization
- publishing date
- 2021-07-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemical Communications
- volume
- 57
- issue
- 52
- pages
- 4 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- pmid:34105533
- scopus:85108873118
- ISSN
- 1359-7345
- DOI
- 10.1039/d1cc01639c
- language
- English
- LU publication?
- yes
- id
- fc094c10-309e-4bcf-b2d6-0a61b51f5bf2
- date added to LUP
- 2021-08-20 13:10:24
- date last changed
- 2024-09-07 22:53:16
@article{fc094c10-309e-4bcf-b2d6-0a61b51f5bf2, abstract = {{<p>Measurements of the decay of electric fields, formed spontaneously within vapour-deposited films ofcis-methyl formate, provide the first direct assessment of the energy barrier to secondary relaxation in a molecular glass. At temperatures far below the glass transition temperature, the mechanism of relaxation is shown to be through hindered molecular rotation. Magnetically-polarised neutron scattering experiments exclude diffusion, which is demonstrated to take place only close to the glass transition temperature.</p>}}, author = {{Cassidy, Andrew and Jørgensen, Mads R.V. and Glavic, Artur and Lauter, Valeria and Plekan, Oksana and Field, David}}, issn = {{1359-7345}}, language = {{eng}}, month = {{07}}, number = {{52}}, pages = {{6368--6371}}, publisher = {{Royal Society of Chemistry}}, series = {{Chemical Communications}}, title = {{A mechanism for ageing in a deeply supercooled molecular glass}}, url = {{http://dx.doi.org/10.1039/d1cc01639c}}, doi = {{10.1039/d1cc01639c}}, volume = {{57}}, year = {{2021}}, }