Tunable emission from composite polymer nanoparticles based on resonance energy transfer

Kong, Fantao; Wu, Xiaoqiang; Huang, G.S.; Yuan, Rongrong; Chu, Paul K.

doi:10.1016/j.tsf.2007.12.055

Cited by 24 publications

(17 citation statements)

References 44 publications

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“…Previous efforts have utilized this approach to tune the photoluminescent color characteristics of particles composed of PVK and poly[2-methoxy-5-(2 0 -ethyl-hexyloxy)-p-phenylenevinylene] (MEH-PPV). [23,24] Figure 4 presents the PL of the neat and hybrid particles dispersed in chloroform. The PFO neat particles are characterized by two sharp peaks (Dl fwhm % 12-18 nm) centered at 438 and 465 nm, and one broad peak (Dl fwhm % 25 nm) centered at 498 nm.…”

Section: Resultsmentioning

confidence: 99%

Nanoparticle Electroluminescence: Controlling Emission Color Through Förster Resonance Energy Transfer in Hybrid Particles

Huebner¹,

Roeder²,

Foulger³

2009

Adv Funct Materials

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Electroluminescent (EL) polymers are attractive for developing all‐organic light‐emitting devices (OLEDs) due to the potential advantages that polymeric systems may offer in the large‐scale manufacturing of electronics. Nonetheless, many of these EL π‐conjugated polymers are inherently insoluble in the solvents employed in the intended solution‐based manufacturing processes. One such polymer is poly(2,5‐dioctyl‐1,4‐phenylenevinylene) (POPPV), where the inherent lack of solubility of POPPV in organic solvents has frustrated its widespread application in devices and no OLEDs have been presented that exploit its electroluminescence characteristics. In this effort, a unique strategy is presented for the preparation of hybrid nanoparticles composed of POPPV, a green emitter (λem = 505 nm) and poly(9,9‐di‐n‐octylfluorenyl‐2,7‐diyl) (PFO), a blue emitter (λem = 417 nm). The aqueous‐based nanoparticle dispersion composed of these hybrid particles is stable to aggregate and can be employed in the construction of OLEDs. The color characteristics of the electroluminescence for the devices can be tuned by exploiting the Förster resonance energy transfer between the polymers within a particle, while suppressing energy transfer between the particles. These aqueous‐based nanoparticle dispersions are amenable to being printed into devices through high‐throughput manufacturing techniques, for example, roll‐to‐roll printing.

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Section: Resultsmentioning

confidence: 99%

Nanoparticle Electroluminescence: Controlling Emission Color Through Förster Resonance Energy Transfer in Hybrid Particles

Huebner¹,

Roeder²,

Foulger³

2009

Adv Funct Materials

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“…In the recent reports, various methods have been previously shown for the formation of organic NPs [12][13][14][15][16][17][18][19][20][21]. These include mini-emulsion process [12], hydrothermal synthesis [17], and reprecipitation [13,14,[18][19][20][21].…”

mentioning

confidence: 99%

Quantum efficiency enhancement in film by making nanoparticles of polyfluorene

Huyal¹,

Özel²,

Tuncel³

et al. 2008

Opt. Express

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Abstract:We report on conjugated polymer nanoparticles of polyfluorene that were formed to exhibit higher fluorescence quantum efficiency in film (68%) and reduce undesired emission peak wavelength shifts in film (by 20 nm), compared to the solid-state polymer thin film made directly out of the same polymer solution without forming nanoparticles. Using the facile reprecipitation method, solutions of poly[9,9-dihexyl-9H-fluorene] in THF were added at different volume ratios to obtain different size distributions of nanoparticle dispersions in water. This allowed us to control the sizedependent optical emission of our polyfluorene nanoparticles. Such organic nanoparticles hold great promise for use as efficient emitters in optoelectronic device applications.

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“…The third and last approach, which has been recently developed for several materials, is the combination of donor nanoparticles and acceptor nanoparticles in form of physical mixtures. Nanostructures used for such purposes are mixtures of NCs [15], two metal NPs [16], polymer nanoparticle blends prepared via the reprecipitation or the mini-emulsion methods either by mixing of polymer solutions and then forming NPs or first the formation of polymer NPs and then mixing of NP dispersions [1,2,[17][18][19]. Also, recently blends of polymers and dyes have been described by McNeill and associates.…”

Section: / Optics Express 671mentioning

confidence: 99%

“…This can be useful for efficient energy transfer from polyfluorene acting as the donor to any lower energy acceptor molecule. Various studies have been carried out to analyze the energy transfer mechanisms, which can be radiative or non-radiative [1][2][3][4]. Radiative energy transfer involves the emission of a photon by the highly energetic polymer and subsequent re-absorption by the acceptor.…”

Section: Introductionmentioning

confidence: 99%

Non-radiative resonance energy transfer in bi-polymer nanoparticles of fluorescent conjugated polymers

Özel¹,

Özel²,

Demir³

et al. 2010

Opt. Express

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This work demonstrates the comparative studies of non-radiative resonance energy transfer in bi-polymer nanoparticles based on fluorescent conjugated polymers. For this purpose, poly[(9,9-dihexylfluorene) (PF) as a donor (D) and poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) as an acceptor (A) have been utilized, from which four different bi-polymer nanoparticle systems are designed and synthesized. Both, steady-state fluorescence spectra and time-resolved fluorescence measurements indicate varying energy transfer efficiencies from the host polymer PF to the acceptor polymer MEH-PPV depending on the D-A distances and structural properties of the nanoparticles. The first approach involves the preparation of PF and MEH-PPV nanoparticles separately and mixing them at a certain ratio. In the second approach, first PF and MEH-PPV solutions are mixed prior to nanoparticle formation and then nanoparticles are prepared from the mixture. Third and fourth approaches involve the sequential nanoparticle preparation. In the former, nanoparticles are prepared to have PF as a core and MEH-PPV as a shell. The latter is the reverse of the third in which the core is MEH-PPV and the shell is PF. The highest energy transfer efficiency recorded to be 35% is obtained from the last system, in which a PF layer is sequentially formed on MEH-PPV NPs.

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Tunable emission from composite polymer nanoparticles based on resonance energy transfer

Cited by 24 publications

References 44 publications

Nanoparticle Electroluminescence: Controlling Emission Color Through Förster Resonance Energy Transfer in Hybrid Particles

Nanoparticle Electroluminescence: Controlling Emission Color Through Förster Resonance Energy Transfer in Hybrid Particles

Quantum efficiency enhancement in film by making nanoparticles of polyfluorene

Non-radiative resonance energy transfer in bi-polymer nanoparticles of fluorescent conjugated polymers

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