Fabrication of Quantum Dot/Polymer Composites: Phosphine-Functionalized Block Copolymers as Passivating Hosts for Cadmium Selenide Nanoclusters

摘要: Nearly monodisperse CdSe nanoclusters, surface-passivated with a layer of trioctylphosphine and oxide, have been sequestered within phosphine-containing domains in diblock copolymer. A convergent approach to fabrication these composites was adopted via independent synthesis nanoclusters polymer. Diblock copolymers phosphine- or phosphine oxide-functionalized monomers methyltetracyclododecene (MTD) were prepared by ring opening metathesis polymerization using Mo alkylidene initiators. Nanoclusters pyrolysis CdMe2 SeP(octyl)3 the presence P(octyl)3 OP(octyl)3. An immediate sustained increase electronic passivation is found for incorporated into octylphosphine-containing polymers. In contrast, pure hydrocarbon oxide-containing polymers rapidly lose passivation. Films polymer matrix static cast from dilute solution. Under suitable conditions, th...