Nanoparticles approaches to enhance the lifetime of emitting polymers

5 Nanoparticles approaches to enhance the lifetime of emitting polymers 

1 Green emitting polymer/metal nanoshell nanocomposite 

Our group has prepared PPV nanocomposite films doped with Si02 Au nanoparticles prepared by the novel method and has characterized the PL properties of the films. The optical resonance of Si02 Au nanoparticles was specifically designed to interact with the triplet excitons of PPV. It has been observed that the rate of photo-oxidation in poly(p-phenylenevinylene) was drastically reduced by doping with Si02 Au nanoparticles, as expected. 

Schematic diagrams for the synthetic schemes are illustrated in Fig. 15.5. To briefly summarize, silica nanoparticles were synthesized by the Stober-method and then coated with a Sn layer, which acts as a linker site for gold deposition. Gold layers were coated on the Sn-functionaUzed silica nanoparticles by reduction of HAuCLt. Finally, the gold-coated silica nanoparticles were covered 

5 Schematic diagram for the synthesis of gold-coated silica nanoparticles. 

---