Poly(p-phenylenevinylene) derivatives containing electron-transporting 1,10-phenanthroline segments

POLY 450

Donghong Yu, yu@bio.aau.dk1, Kaizheng Zhu2, Peter K. Kristensen2, Thomas G. Pedersen2, and Reinhard Wimmer1. (1) Department of Biotechnology, Chemistry, and Enviornmental Engeering, Aalborg University, Sohngaardsholmsvej 57, Aalborg, 9000, Denmark, (2) Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, Aalborg East, 9220, Denmark
A series of novel poly(p-phenylenevinylene) co-polymers with alternating 1,10-phenanthrolinenevinylene (PhenV) or 4,7-diphenyl-1,10-phenanthrolinevinylene (Bathocuproinevinylene, BathV) and 2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene (MEH-PV) or 2,5-dioctyloxy-1,4-phenylenevinylene (DO-PV) moieties, were synthesized. Electrochemical properties demonstrate excellent reproducibility and our polymers possess good capability of conducting both electrons and holes. The polymers were highly photoluminescent, and strong green to yellow emission with the peak in the range 530 nm to 550 nm was observed in solution and film. In addition, a light-emitting diode based on PHEN-DO-PPV was fabricated and the electroluminescence spectrum was recorded. This facile method provides a new approach to the synthesis of conjugated polymers with balanced ability of conducting electrons and holes.