title: Catalytic B-C Coupling by Si/B Exchange: A Versatile Route to π-Conjugated Organoborane Molecules, Oligomers, and Polymers.
abstract: Conjugated organoboranes have emerged as attractive hybrid materials for optoelectronic applications. Herein, a highly efficient, environmentally benign catalytic B-C bond formation method is presented that uses organosilicon compounds, dibromoboranes, and the metal-free organocatalyst Me3SiNTf2. This Si/B exchange approach has been successfully applied to the synthesis of arylborane molecules 4a-c, oligomers 8a,b, and polymers 8a',b'. Photophysical investigations, supported by TD-DFT calculations, reveal highly effective π-conjugation in thienyl- and furylborane species; the latter are also highly emissive.
authors.affiliation: Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52056 Aachen, Germany.
authors.forename: Artur
authors.initials: A
authors.lastname: Lik
authors.affiliation: Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52056 Aachen, Germany.
authors.forename: Lars
authors.initials: L
authors.lastname: Fritze
authors.affiliation: Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52056 Aachen, Germany.
authors.forename: Lars
authors.initials: L
authors.lastname: Müller
authors.affiliation: Institute of Inorganic Chemistry, RWTH Aachen University , Landoltweg 1, 52056 Aachen, Germany.
authors.forename: Holger
authors.identifier: 0000-0003-1273-3685
authors.initials: H
authors.lastname: Helten