6533b7d4fe1ef96bd12631b4
RESEARCH PRODUCT
Micro- and nanostructuring of oligo- and polythiophenes in two and three dimensions
J.w. SchultzeLars ConradC. StrombergS. AllardRudolf ZentelDirk AllardMartin Brehmersubject
chemistry.chemical_classificationMaterials scienceGeneral Chemical EngineeringPolymerPolyelectrolytechemistry.chemical_compoundMonomerSulfonatechemistryPolymerizationChemical engineeringPolymer chemistryElectrochemistryCopolymerPhosphoniumCyclic voltammetrydescription
Abstract Oligothiophenes bearing methacrylic functionalities were two-dimensional-structured by stamping techniques. The localised monomer was hardened by radical polymerisation in UV light. The structures in micrometre- and nanometre-scale were characterised electrochemically by SECM. An inverse polymer opal with extremely high inner surface and periodicity was obtained by localising the photosensitive oligothiophene within an opal template of SiO 2 beads. Cyclic voltammetry of the oligothiophenes in aprotic solvents was carried out to examine possible electrochemical conversions. A self-assembling technique for lateral and vertical structuring of polythiophenes with pendant sulfonate and phosphonium ion groups has been applied. This polyelectrolyte multilayer adsorption on flat and prestructured substrates allowed us to produce three-dimensional structures in nanometre-scale. Cyclic voltammetry of these multilayers proves the reversible redox cycling of these polymers with a doping degree of approximately 16%.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-09-01 | Electrochimica Acta |