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Simultaneous light emissions from two different types of fluorophores in diblock copolymer micellar films
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12.See EPAPS Document No. for normalized UV-visible and PL spectra of PF in toluene solution and RB in ethanol solution. For more information on EPAPS, see http://www.aip.org/pubservs/epaps.html.[Supplementary Material]
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FIG. 1.

Height-contrast AFM images of (a) a neat PS-b-P2VP micellar thin film, (b) a PS-b-P2VP/RB hybrid film, and (c) a PS-b-P2VP/RB/PF hybrid film.

Image of FIG. 2.

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FIG. 2.

PL spectra of spin-coated PS-b-P2VP/RB/PF hybrid film. Simultaneous two emission bands in the blue and red regions were ascribed to the emission from PF (peaks at 439, 466, and 498 nm) and RB (peak at 591 nm), respectively. The excitation wavelengths were 360 nm (solid line) and 520 nm (dashed line), respectively.

Image of FIG. 3.

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FIG. 3.

Schematic illustration to achieve simultaneous light emissions from a single layer generated by one-step spin coating from diblock copolymer micelles solution mixed with a fluorescent dye (RB) and a conjugated polymer (PF). (a) Formation of micellar solution of PS-b-P2VP copolymer in toluene. (b) Incorporation of RB into the P2VP domains. (c) The PS-b-P2VP/RB micellar solution is mixed with the desired amount of PF; the PF chains are distributed outside the P2VP cores. (d) Formation of PS-P2VP/RB/PF hybrid film by spin coating and simultaneous light emissions are induced due to the isolated location of RB and PF.

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/content/aip/journal/apl/93/18/10.1063/1.3000605
2008-11-06
2014-04-16

Abstract

We report a simple strategy to realize simultaneous light emissions from a single layer of poly(styrene-block-2-vinyl pyridine) (PS-b-P2VP) copolymermicelles incorporated with a fluorescent dye in the P2VP core and a conjugated polymer in the PS corona. The fluorescence resonance energy transfer between the dye and the conjugated polymer is effectively inhibited due to the isolation of micelles. This study may offer an effective way to facilitate the ongoing exploration of white light emission in optics and optoelectronics.

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Scitation: Simultaneous light emissions from two different types of fluorophores in diblock copolymer micellar films
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/18/10.1063/1.3000605
10.1063/1.3000605
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