6533b7d9fe1ef96bd126bff5
RESEARCH PRODUCT
Patterning of a Surface Immobilized ATRP Initiator with an Inkjet Printer
Sebastian G. J. EmmerlingPhilipp LelligJochen S. GutmannLaura B. N. LangerSascha A. Pihansubject
chemistry.chemical_classificationPolymers and PlasticsBulk polymerizationChemistryAtom-transfer radical-polymerizationOrganic ChemistryAlcoholPolymerPrimary alcoholGraftingInorganic Chemistrychemistry.chemical_compoundPolymer chemistryMaterials ChemistryMoleculeSaponificationdescription
A new technique for patterning polymer brushes on the micrometer scale has been developed in which an inkjet printer was used to deposit droplets of acid on a surface-immobilized initiator for atom transfer radical polymerization (ATRP). The acid cleaved an ester bond in the ATRP initiator in a saponification reaction. As a result, the ATRP initiator was rendered inactive. To control the degree of defunctionalization, a new initiator containing a weak ester bond was derived from a tertiary alcohol. Comparison to an established ATRP initiator, derived from a primary alcohol, showed that the novel initiator was defunctionalized with a higher efficiency. Control of the reaction time allowed to partially defunctionalize the initiator molecules, leading to control of grafting densities within the written patterns.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-05-14 | Macromolecules |