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  Molecular motions in supercooled and glassy ibuprofen: deuteron magnetic resonance and high-resolution rheology study

Bauer, S., Storek, M., Gainaru, C., Zimmermann, H., & Böhmer, R. (2015). Molecular motions in supercooled and glassy ibuprofen: deuteron magnetic resonance and high-resolution rheology study. Journal of Physical Chemistry B, 19(15), 5087-5095. doi:10.1021/acs.jpcb.5b01072.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-AD8B-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-29F6-D
Genre: Journal Article

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JPhysChemB_119_2015_5087.pdf (Any fulltext), 1023KB
 
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 Creators:
Bauer, S., Author
Storek, M., Author
Gainaru, C., Author
Zimmermann, Herbert1, Author              
Böhmer, R., Author
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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 Abstract: Using deuteron nuclear magnetic resonance, the molecular motions of specifically isotope-labeled ibuprofen were probed at the carboxylic group and at the methin group next to it. Spin relaxometry revealed slight differences between the molecular motions of the two isotopomers that are rationalized with reference to the hydrogen bonding of the COOH moiety. In the glassy state, a small-angle jump process among about four sites, related to the so-called γ-process, was identified using stimulated-echo spectroscopy. Indications for a Debye-like process, previously found to leave a weak signature in the dielectric loss, could not unambiguously be detected in magnetic resonance or shear mechanical experiments carried out for supercooled liquid ibuprofen

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Language(s): eng - English
 Dates: 2015-03-092015-02-022015-03-182015-03-182015-04-16
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
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Title: Journal of Physical Chemistry B
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 19 (15) Sequence Number: - Start / End Page: 5087 - 5095 Identifier: ISSN: 1520-6106
CoNE: /journals/resource/1000000000293370