DOI: 10.1063/1.454047. 2H-NMR study of the glass transition in supercooled ortho-terphenyl

2H-NMR study of the glass transition in supercooled ortho-terphenyl

10.1063/1.454047

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The glass forming molecular liquid ortho-terphenyl has been investigated by 2H-NMR techniques providing spin-relaxation times (T1, T2), and spin-alignment data which yield information on the time scale and geometry of ultra-slow molecular reorientation. The main results are as follows: The primary glass transition (α process) is characterized by rotational molecular jumps with a jump size distribution weighted in favor of large jump angles, and by a distribution of correlation times. In addition intramolecular flip–flop jumps of the lateral phenyl rings are found which do not take part in the α process. Apart from this (secondary) intramolecular dynamics no residual small angle reorientation persists below Tg on the time scale (10−4 to 102 s) of the spin-alignment experiment.

Bibliography

Dries, Th., Fujara, F., Kiebel, M., RÃ¶ssler, E., & Sillescu, H. (1988). 2H-NMR study of the glass transition in supercooled ortho-terphenyl. The Journal of Chemical Physics, 88(4), 2139â2147.

Authors 5

Th. Dries (first)
F. Fujara (additional)
M. Kiebel (additional)
E. Rössler (additional)
H. Sillescu (additional)

References 50 Referenced 117

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:10 a.m.)
Deposited	1 year, 6 months ago (Feb. 10, 2024, 2:32 a.m.)
Indexed	3 months ago (May 28, 2025, 10:46 a.m.)
Issued	37 years, 6 months ago (Feb. 15, 1988)
Published	37 years, 6 months ago (Feb. 15, 1988)
Published Print	37 years, 6 months ago (Feb. 15, 1988)

Funders 0

None

BibTeX

@article{Dries_1988, title={2H-NMR study of the glass transition in supercooled ortho-terphenyl}, volume={88}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.454047}, DOI={10.1063/1.454047}, number={4}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Dries, Th. and Fujara, F. and Kiebel, M. and Rössler, E. and Sillescu, H.}, year={1988}, month=feb, pages={2139–2147} }

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