6533b855fe1ef96bd12b1a81
RESEARCH PRODUCT
Self-Assembled Polymers Based on bis-Tetra-Urea Calix[4]arenes Connected via the Wide Rim
Andreas JanshoffVolker BöhmerMatthias JankeGanna Podoprygorinasubject
chemistry.chemical_classificationbiologyChemistryHydrogen bondGeneral ChemistryPolymerNuclear magnetic resonance spectroscopybiology.organism_classificationchemistry.chemical_compoundPolymer chemistryCalixareneUreaTetraOrganic chemistrySelf-assemblyStoichiometrydescription
Six double calixarenes were synthesised in which two tetra-urea calix[4]arenes are linked by a rigid spacer between the urea functions at their wide rim. The dimerisation of their tetra-urea parts leads to hydrogen-bonded polymeric assemblies in apolar solvents. The addition of the stoichiometric amount of a tetra-tosylurea calix[4]arene disrupts the polymeric structures due to the preferred formation of heterodimeric capsules between tetra-aryl and tetra-tosylurea calix[4]arenes. The existence of polymeric assemblies was further established by AFM studies on spin-coated samples.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 | Supramolecular Chemistry |