Conjugated polymer infiltrated silica opals and the effect of nano-confinement on the luminescent spectra

Brandon C. Jarvis; Cody L. Gilleland; Jose M. Gutierrez; John W. Stadler; Jessica Gillespe; Michael Sampson; Alan Dalton; John P. Ferraris; Robert Glosser; Preston B. Landon

doi:10.1117/12.617006

18 August 2005 Conjugated polymer infiltrated silica opals and the effect of nano-confinement on the luminescent spectra

Brandon C. Jarvis, Cody L. Gilleland, Jose M. Gutierrez, John W. Stadler, Jessica Gillespe, Michael Sampson, Alan Dalton, John P. Ferraris, Robert Glosser, Preston B. Landon

Author Affiliations +

Proceedings Volume 5929, Physical Chemistry of Interfaces and Nanomaterials IV; 592917 (2005) https://doi.org/10.1117/12.617006
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Self assembled synthetic opals composed of spheres with 200-1500nm diameters were infiltrated with poly[2-methoxy-5-(20-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and Poly [(m-phenylenevinylene)-co- (2,5-dioctoxy-p-phenylenevinylene)] (PmPV) which are luminescent polymers. The luminescence spectra of the polymers was blue shifted when infiltrated deep into the nano-scopic opal pores relative to the luminescence spectra from thick films of the bulk polymers. Inverse composite plastic and luminescent polymer opals were constructed resulting in a significant blue shift in the peek luminescence of MEH-PPV from 568nm for the bulk polymer to 520nm in the inverse opal structure. We found that the majority of the blue shifting observed could be explained by the formation of isolated polymer strands within the opals. Silica spheres were coated with MEH-PPV, dispersed in H₂O and coated with polyelectrolytes which recharged and sterically stabilized the colloidal surfaces. Luminescence spectra from individual and self-assembled silica spheres coated with MEH-PPV were also blue shifted.

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Brandon C. Jarvis, Cody L. Gilleland, Jose M. Gutierrez, John W. Stadler, Jessica Gillespe, Michael Sampson, Alan Dalton, John P. Ferraris, Robert Glosser, and Preston B. Landon "Conjugated polymer infiltrated silica opals and the effect of nano-confinement on the luminescent spectra", Proc. SPIE 5929, Physical Chemistry of Interfaces and Nanomaterials IV, 592917 (18 August 2005); https://doi.org/10.1117/12.617006

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KEYWORDS

Optical spheres

Silica

Polymers

Luminescence

Coating

Scanning electron microscopy

Transmission electron microscopy

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