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  An alignment medium for measuring residual dipolar couplings in pure DMSO: Liquid crystals from graphene oxide grafted with polymer brushes.

Zong, W., Li, G. W., Cao, J. M., Lei, X., Hu, M. L., Sun, H., et al. (2016). An alignment medium for measuring residual dipolar couplings in pure DMSO: Liquid crystals from graphene oxide grafted with polymer brushes. Angewandte Chemie-International Edition, 55(11), 3690-3693. doi:10.1002/anie.201511435.

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 Urheber:
Zong, W., Autor
Li, G. W., Autor
Cao, J. M., Autor
Lei, X., Autor
Hu, M. L., Autor
Sun, H., Autor
Griesinger, C.1, Autor           
Tan, R. X., Autor
Affiliations:
1Department of NMR Based Structural Biology, MPI for biophysical chemistry, Max Planck Society, ou_578567              

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Schlagwörter: Alignment medium; Functionalized graphene oxide; Liquid crystals; NMR spectroscopy; Residual dipolar coupling
 Zusammenfassung: Residual dipolar couplings (RDCs) have attracted attention in light of their great impact on the structural elucidation of organic molecules. However, the effectiveness of RDC measurements is limited by the shortage of alignment media compatible with widely used organic solvents, such as DMSO. Herein, we present the first liquid crystal (LC) based alignment medium that is compatible with pure DMSO, thus enabling RDC measurements of polar and intermediate polarity molecules. The liquid crystals were obtained by grafting polymer brushes onto graphene oxide (GO) using free radical polymerization. The resulting new medium offers several advantages, such as absence of background signals, narrow line shapes, and tunable alignment. Importantly, this medium is compatible with -conjugated molecules. Moreover, sonication-induced fragmentation can reduce the size of GO sheets. The resulting anisotropic medium has moderate alignment strength, which is a prerequisite for an accurate RDC measurement.

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Sprache(n): eng - English
 Datum: 2016-02-172016-03-07
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/anie.201511435
 Art des Abschluß: -

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Titel: Angewandte Chemie-International Edition
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 55 (11) Artikelnummer: - Start- / Endseite: 3690 - 3693 Identifikator: -