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  1. Artikel: A G4·K+ Hydrogel Stabilized by an Anion

    Peters, Gretchen Marie / Brown Steven P / Davis Jeffery T / Hyman Brooke J / Manjunatha Reddy G. N / Marsh Andrew / Plank Taylor N / Skala Luke P

    Journal of the American Chemical Society. 2014 Sept. 10, v. 136, no. 36

    2014  

    Abstract: Supramolecular hydrogels derived from natural products have promising applications in diagnostics, drug delivery, and tissue engineering. We studied the formation of a long-lived hydrogel made by mixing guanosine (G, 1) with 0.5 equiv of KB(OH)₄. This ... ...

    Abstract Supramolecular hydrogels derived from natural products have promising applications in diagnostics, drug delivery, and tissue engineering. We studied the formation of a long-lived hydrogel made by mixing guanosine (G, 1) with 0.5 equiv of KB(OH)₄. This ratio of borate anion to ligand is crucial for gelation as it links two molecules of 1, which facilitates cation-templated assembly of G₄·K⁺ quartets. The guanosine–borate (GB) hydrogel, which was characterized by cryogenic transmission electron microscopy and circular dichroism and ¹¹B magic-angle-spinning NMR spectroscopy, is stable in water that contains physiologically relevant concentrations of K⁺. Furthermore, non-covalent interactions, such as electrostatics, π-stacking, and hydrogen bonding, enable the incorporation of a cationic dye and nucleosides into the GB hydrogel.
    Schlagwörter borates ; circular dichroism spectroscopy ; diagnostic techniques ; drugs ; gelation ; guanosine ; hydrogels ; hydrogen bonding ; ligands ; mixing ; nuclear magnetic resonance spectroscopy ; potassium ; tissue engineering ; transmission electron microscopy
    Sprache Englisch
    Erscheinungsverlauf 2014-0910
    Umfang p. 12596-12599.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021%2Fja507506c
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel ; Online: A G₄·K⁺ hydrogel stabilized by an anion.

    Peters, Gretchen Marie / Skala, Luke P / Plank, Taylor N / Hyman, Brooke J / Manjunatha Reddy, G N / Marsh, Andrew / Brown, Steven P / Davis, Jeffery T

    Journal of the American Chemical Society

    2014  Band 136, Heft 36, Seite(n) 12596–12599

    Abstract: Supramolecular hydrogels derived from natural products have promising applications in diagnostics, drug delivery, and tissue engineering. We studied the formation of a long-lived hydrogel made by mixing guanosine (G, 1) with 0.5 equiv of KB(OH)4. This ... ...

    Abstract Supramolecular hydrogels derived from natural products have promising applications in diagnostics, drug delivery, and tissue engineering. We studied the formation of a long-lived hydrogel made by mixing guanosine (G, 1) with 0.5 equiv of KB(OH)4. This ratio of borate anion to ligand is crucial for gelation as it links two molecules of 1, which facilitates cation-templated assembly of G4·K(+) quartets. The guanosine-borate (GB) hydrogel, which was characterized by cryogenic transmission electron microscopy and circular dichroism and (11)B magic-angle-spinning NMR spectroscopy, is stable in water that contains physiologically relevant concentrations of K(+). Furthermore, non-covalent interactions, such as electrostatics, π-stacking, and hydrogen bonding, enable the incorporation of a cationic dye and nucleosides into the GB hydrogel.
    Mesh-Begriff(e) Anions/chemistry ; Borates/chemistry ; Guanosine/chemistry ; Hydrogel, Polyethylene Glycol Dimethacrylate/chemistry ; Magnetic Resonance Spectroscopy ; Molecular Structure ; Potassium/chemistry
    Chemische Substanzen Anions ; Borates ; Guanosine (12133JR80S) ; Hydrogel, Polyethylene Glycol Dimethacrylate (25852-47-5) ; Potassium (RWP5GA015D)
    Sprache Englisch
    Erscheinungsdatum 2014-09-10
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/ja507506c
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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