Author: Zülal ÖZdemir

0000000001301334

AUTHOR

Zülal ÖZdemir

showing 9 related works from this author

Infinite coordination polymer networks metallogelation of aminopyridine conjugates and in situ silver nanoparticle formation

2018

Herein we report silver(i) directed infinite coordination polymer network (ICPN) induced self-assembly of low molecular weight organic ligands leading to metallogelation. Structurally simple ligands are derived from 3-aminopyridine and 4-aminopyridine conjugates which are composed of either pyridine or 2,2'-bipyridine cores. The cation specific gelation was found to be independent of the counter anion, leading to highly entangled fibrillar networks facilitating the immobilization of solvent molecules. Rheological studies revealed that the elastic storage modulus (G') of a given gelator molecule is counter anion dependent. The metallogels derived from ligands containing a bipyridine core dis…

STABILIZATIONSilverCoordination polymerNanoparticleMetal Nanoparticles02 engineering and technologyorganometalliyhdisteet010402 general chemistry01 natural sciencesSilver nanoparticlePolymerizationchemistry.chemical_compoundBipyridinePyridineorganometallic compoundsMoleculePARTICLESCRYSTAL-STRUCTURES4-Aminopyridinepolymeeritta116GELSpolymersgeelitHYBRID MATERIALSta114General Chemistry021001 nanoscience & nanotechnologyCondensed Matter PhysicsGELATION0104 chemical sciencesCrystallographyREDUCTIONCross-Linking ReagentschemistryPolymerizationMETALLUMINESCENCEPHASE-TRANSITIONCoordination polymerizationnanohiukkasetnanoparticles0210 nano-technologyRheologySOFT MATTER

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Rapid Self-Healing and Thixotropic Organogelation of Amphiphilic Oleanolic Acid–Spermine Conjugates

2021

Natural and abundant plant triterpenoids are attractive starting materials for the synthesis of conformationally rigid and chiral building blocks for functional soft materials. Here, we report the rational design of three oleanolic acid-triazole-spermine conjugates, containing either one or two spermine units in the target molecules, using the Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction. The resulting amphiphile-like molecules 2 and 3, bearing just one spermine unit in the respective molecules, self-assemble into highly entangled fibrous networks leading to gelation at a concentration as low as 0.5% in alcoholic solvents. Using step-strain rheological measurements, we show ra…

Thixotropy116 Chemical sciencesSpermine02 engineering and technologySurfaces and Interfaces010402 general chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesCombinatorial chemistrySoft materials0104 chemical scienceschemistry.chemical_compoundTriterpenoidchemistrySelf-healingAmphiphileElectrochemistryGeneral Materials Science0210 nano-technologyOleanolic acidSpectroscopyConjugateLangmuir

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