0000000000068975
AUTHOR
Katri Toikkanen
showing 2 related works from this author
Stimuli-responsive bile acid-based metallogels forming in aqueous media
2015
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.
Characterization and synthesis of O- and N-tosylated N,N-bis(2-aminophenyl)isophthalamide based ligands
2009
Abstract A synthetic strategy for the preparation of O - and N- tosylated N , N -bis(2-aminophenyl)isophthalamide based ligands is described. It was observed that selectivity in O - and N -tosylation could be achieved by performing the reaction at low temperatures in the presence of an appropriate base. The obtained O - and N -tosylated products were characterized by means of NMR and mass spectroscopy, and X-ray crystallography.