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  Cromolyn/gelatin mixtures as aqueous alignment media and utilization of their mechanical stability for a layering technique

Niklas, T., Schulze, P., & Farès, C. (2018). Cromolyn/gelatin mixtures as aqueous alignment media and utilization of their mechanical stability for a layering technique. Magnetic Resonance in Chemistry, 56(12), 1176-1182. doi:10.1002/mrc.4786.

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Genre: Journal Article

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 Creators:
Niklas, Thomas1, 2, Author           
Schulze, Philipp1, Author           
Farès, Christophe2, Author           
Affiliations:
1Service Department Schulze (GC, HPLC), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445630              
2Service Department Farès (NMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445623              

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Free keywords: 1H; 2H; alignment medium; cromolyn; gelatin; NMR; polymer-dispersed liquid crystals; residual dipolar couplings; spatially selective NMR
 Abstract: In this study, aqueous blends of cromolyn and gelatin (“cromogels”) are introduced as anisotropic media. The addition of gelatin enables an advantageous adjustability of the strength, the homogeneity, and the stability of the cromolyn alignment. The mechanical stability of these polymer‐dispersed liquid crystals is further utilized by stacking layers of D2O/cromolyn/gelatin with varying component ratio. The resulting distinct phases with correspondingly different degrees of alignment can be targeted by spatially resolved NMR techniques. As a case study, we investigated sucrose in a two‐phase system with neat D2O and analyte layered over the anisotropic medium. A recently presented spatially selective coupled‐type HSQC experiment allows the determination of one‐bond C‐H splitting in both phases.

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Language(s): eng - English
 Dates: 2018-06-192018-07-272018-08-092018-12-01
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/mrc.4786
 Degree: -

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Title: Magnetic Resonance in Chemistry
  Abbreviation : Magn. Reson. Chem.
Source Genre: Journal
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Publ. Info: Hoboken, N.Y., USA : John Wiley & Sons
Pages: - Volume / Issue: 56 (12) Sequence Number: - Start / End Page: 1176 - 1182 Identifier: ISSN: 0749-1581
CoNE: https://pure.mpg.de/cone/journals/resource/954928503544