Synthesis and photoluminescent properties of polynorbornenes bearing platinum complex and diphenylanthracene moieties in the side chains

Abstract

Ring-opening metathesis polymerization of norbornene derivatives is useful for preparing thermally stable and transparent polymeric materials with excellent moldability. The present paper deals with the ring-opening metathesis copolymerization of a norbornene monomer tethering a platinum (Pt) arylacetylide complex moiety and a norbornene monomer tethering a 9,10-diphenylanthracene (DPA) moiety and investigation of the photoluminescent properties. All the copolymers luminesced brightly under N₂. The copolymers did not exhibit triplet–triplet annihilation upconversion in the absence of DPA, but did so in the presence of DPA. This result indicates that it is necessary not only for the sensitizing Pt moiety and emitting DPA moiety to be present in the polynorbornene side chain but also for the relative positions of the two moieties to be appropriately controlled.