Comparative study of the Debye-Waller factor anomaly at the glass transition of 
isotopically substituted orthoterphenyls

Debus, O.; Zimmermann, Herbert; Bartsch, E.; Fujara, F.; Kiebel, M.; Petry, W.; Sillescu, Hans

doi:10.1016/0009-2614(91)87152-2

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Comparative study of the Debye-Waller factor anomaly at the glass transition of isotopically substituted orthoterphenyls

Debus, O., Zimmermann, H., Bartsch, E., Fujara, F., Kiebel, M., Petry, W., et al. (1991). Comparative study of the Debye-Waller factor anomaly at the glass transition of isotopically substituted orthoterphenyls. Chemical Physics Letters, 180(3), 271-274. doi:10.1016/0009-2614(91)87152-2.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-AC7D-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0000-6724-4

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Creators:
Debus, O., Author
Zimmermann, Herbert^{1, 2, 3, 4}, Author
Bartsch, E., Author
Fujara, F., Author
Kiebel, M., Author
Petry, W., Author
Sillescu, Hans, Author

Affiliations:
1Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705
2Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700
3Zimmermann Group, Max Planck Institute for Medical Research, Max Planck Society, ou_1497749
4Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497712

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Abstract: We report on neutron-scattering measurements of the Debye—Waller factor of three isotopically substituted glassy orthoterphenyls: fully protonated, fully deuterated and selectively deuterated at the lateral phenyl rings. From the comparison of the observed anomaly in the glass transition region (β-process) found in the three systems, we can exclude any intramolecular phenyl-ring dynamics as the dominant motional mechanism for the β-process. The data thus support mode-coupling theory proposing a center-of-mass motion as precursor process of the glass transition.

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Language(s): eng - English

Dates: Submitted: 1991-02-21Published Online: 2002-01-15Date issued: 1991-05-17

Publication Status: Issued

Pages: 4

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Identifiers: DOI: 10.1016/0009-2614(91)87152-2

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Title: Chemical Physics Letters

Other : Chem. Phys. Lett.

Source Genre: Journal

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Publ. Info: Amsterdam : North-Holland

Pages: - Volume / Issue: 180 (3) Sequence Number: - Start / End Page: 271 - 274 Identifier: ISSN: 0009-2614
CoNE: https://pure.mpg.de/cone/journals/resource/954925389241