title: Polymerizable Well-Defined Oligo(thiophene amide)s and their ROMP Block Copolymers.
abstract: We report the synthesis of conjugated thiophene amide oligomers that constitute a new class of chromophores with potential for optoelectronic applications. The synthesis of defined norbornene-substituted oligothiophene amides using conventional coupling chemistry is described. Their electronic properties depend on the degree of oligomerization as UV/Vis and fluorescence spectroscopy demonstrate. A significant red shift in the spectra upon an increase in the oligomer length evidences conjugation of the thiophene rings via the amide linkages. ROMP of the norbornene-substituted oligomers gives homopolymers and block-copolymers with a solubilizing second block. The amphiphilic character of the block copolymers is used to study micellization and bulk self-organization.
authors.affiliation: Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55099 Mainz, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Hilf
authors.forename: Johannes
authors.initials: J
authors.lastname: Klos
authors.forename: Kookheon
authors.initials: K
authors.lastname: Char
authors.forename: Heeje
authors.initials: H
authors.lastname: Woo
authors.forename: Andreas F M
authors.initials: AF
authors.lastname: Kilbinger