title: Stimuli-responsive bile acid-based metallogels forming in aqueous media.
abstract: The synthesis and gelation properties of a picolinic acid conjugated bile acid derivative in the presence of metal salts along with the stimuli-responsiveness of the systems are reported. The gels are formed in the presence of Cu(2+) ions in the solvent systems composed of 30-50% of organic solvent (MeOH, acetonitrile, or acetone) in water. The gels respond to various stimuli: they can be formed upon sonication or shaking, and their gel-sol transformation can be triggered by a variety of chemical species. NMR, MS, and SEM techniques are exploited in order to gain a deeper insight on the self-assembled systems.
authors.affiliation: University of Jyväskylä, Department of Chemistry, P.O. Box 35, FI-40014 University of Jyväskylä, Finland. Electronic address: virpi.noponen@gmail.com.
authors.forename: Virpi
authors.initials: V
authors.lastname: Noponen
authors.affiliation: University of Jyväskylä, Department of Chemistry, P.O. Box 35, FI-40014 University of Jyväskylä, Finland.
authors.forename: Katri
authors.initials: K
authors.lastname: Toikkanen
authors.affiliation: University of Jyväskylä, Department of Chemistry, P.O. Box 35, FI-40014 University of Jyväskylä, Finland.
authors.forename: Elina
authors.initials: E
authors.lastname: Kalenius
authors.affiliation: University of Jyväskylä, Department of Chemistry, P.O. Box 35, FI-40014 University of Jyväskylä, Finland.
authors.forename: Riikka
authors.initials: R
authors.lastname: Kuosmanen
authors.affiliation: University of Jyväskylä, Department of Chemistry, P.O. Box 35, FI-40014 University of Jyväskylä, Finland.
authors.forename: Hannu
authors.initials: H
authors.lastname: Salo
authors.affiliation: University of Jyväskylä, Department of Chemistry, P.O. Box 35, FI-40014 University of Jyväskylä, Finland. Electronic address: elina.i.sievanen@jyu.fi.
authors.forename: Elina
authors.initials: E
authors.lastname: Sievänen
mesh_terms: D000577:Amides / Q000138:chemical synthesis* / Q000737:chemistry; D001647:Bile Acids and Salts / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D005782:Gels / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010848:Picolinic Acids / Q000737:chemistry
chemical_list: D000577:Amides; D001647:Bile Acids and Salts; D005782:Gels; D010848:Picolinic Acids; D003300:Copper; C030614:picolinic acid
keywords: Bile acid; Metallogel; Picolinic acid; Self-assembly; Stimuli-responsive