Thiophene–phenylene/naphthalene-based step-ladder copolymers (pages 7342–7353)
Torsten W. Bünnagel, Benjamin S. Nehls, Frank Galbrecht, Kristina Schottler, Christof J. Kudla, Markus Volk, João Pina, João S. Seixas de Melo, Hugh D. Burrows and Ullrich SCherf
Article first published online: 9 OCT 2008 | DOI: 10.1002/pola.23039
The synthesis of a series of step-ladder copolymers based on thienylene–phenylene–thienylene and thienylene–naphthylene–thienylene building blocks has been carried out in a microwave-assisted Stille-type cross-coupling reaction. The optical properties of the copolymers were investigated both in solution, at room and low temperature, or in solid state. The coplanar structure of the central ladder segment has been proved by X-ray crystallography of a model compound.