Blue organic light-emitting diode using 1,4-bis(1,1-diphenyl-2-ethenyl)benzene as an emitter

Yang, J.P.; Heremans, P.; Hoefnagels, Roel; Tachelet, Wim; Dieltiens, P; Blockhuys, Frank; Geise, H.J.; Borghs, Gustaaf

doi:10.1016/s0379-6779(99)00136-8

Cited by 21 publications

(16 citation statements)

References 15 publications

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“…1 is the simplest material in this family containing stylbene units and can be a good model compound to understand basic photophysical and electrical properties. As it was reported before, PEB is highly fluorescent and can be used as a dopant in blue emitting OLEDs [16,[22][23]. OLED with PEB dispersed into a polystyrene (PS) matrix showed pure blue emission with the external EL quantum efficiency of η EL = 0.25 % [22].…”

Section: Introductionmentioning

confidence: 62%

1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes

Fenenko¹

2007

Semicond. phys. quantum electron. optoelectron.

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We report on the photophysical properties of 1,4-bis(2,2-diphenylethenyl)benzene (PEB) in a solution and a solid state. A poor blue photoluminescence efficiency of PEB in a solution dramatically increases in the deposited film. We explain such properties in terms of molecular dynamics and degrees of intramolecular freedom in various molecular environments. PEB as an electron-transport and emitting layer in organic light-emitting diodes (OLEDs) shows bright blue-green electroluminescence (EL) with the peak wavelength at λ max ~ 495 nm. The maximum external EL quantum efficiency of η EL = 2.5 % and maximum luminance of 41600 cd/m 2 in the optimized device were obtained, indicating that PEB possesses superior electron-transport ability.

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Section: Introductionmentioning

confidence: 62%

1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes

Fenenko¹

2007

Semicond. phys. quantum electron. optoelectron.

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“…The same phenomenon has also been studied in several other polymer blends 7–8. For this study, four different graft copolymers containing stilbene chromophores were synthesised and used in blends with 4,4′‐bis[2,2‐bis(4‐methoxyphenyl)ethenyl]biphenyl (TMBiPPT, see Fig 1), a good blue emitter and very similar to other compounds that have been used successfully in an OLED 3, 4. This work especially focuses on the energy transfer between the polymer and the luminescent dye, acting as a very efficient host–guest system, which can be studied through UV‐vis spectroscopy.…”

Section: Introductionmentioning

confidence: 87%

“…Since the first report on the use of a π‐conjugated polymer in an OLED1 (organic light emitting diode), much research has been done on the synthesis of polymers that can be used as the active layer in a device. Also, the use of small organic luminescent molecules2–4 has become an area of great interest, as it allows a more precise tuning of the opto‐electrical properties. For mechanical stability, these oligomers have to be blended in a polymer matrix like polystyrene or polyvinylcarbazole (PVK).…”

Section: Introductionmentioning

confidence: 99%

Energy transfer in polystyrene containing pendant stilbene chromophores

Wuyts

Dermaut

Hoefnagels

et al. 2003

Polymer International

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Four different styrene copolymers with stilbenoid side chains were synthesised under Williamson ether or Wadsworth–Emmons conditions. Blends of these graft copolymers with 4,4′‐bis[2,2‐bis(4‐methoxyphenyl)ethenyl]biphenyl (TMBiPPT), a good blue light emitting oligomer, yielded efficient host–guest systems with only emission from the oligomer. TMBiPPT has a maximum absorption at 365 nm, and the emission spectra of the synthesised graft copolymers all had a significant spectral overlap with the absorption spectrum of TMBiPPT. Since we can tune both the structures of the graft copolymer and the oligomer, this is very promising for obtaining new materials to use in a single‐layer OLED (organic light emitting diode). Copyright © 2003 Society of Chemical Industry

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“…This results in the entrapment of a large amount of nanoparticles on the surface before they have the chance to sediment, thus creating more openings on the surface. Also, due to the rotational forces of the spin coating process, the polymer chains harden in a centro-symmetric manner, which could explain the wavy surface of the spin-coated samples (Yang et al 1999, Fig. 4(c)).…”

Section: Morphologymentioning

confidence: 99%

Porous polysulfone coatings for enhanced drug delivery

Sivaraman¹,

Kellenberger

Ergeneman³

et al. 2012

Biomed Microdevices

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The synthesis of a porous polysulfone (PSU) coating for use in drug delivery applications is presented. PSU can serve as a functional surface coating for drug delivery vehicles, such as intraocular biomicrorobots. The coatings can be applied using spin coating or dip coating. The porosity is introduced by selectively dissolving calcium carbonate nanoparticles embedded in the bulk polymer. The network of pores thus formed increases by a factor of thirty the amount of Rhodamine B (model drug) that can be loaded and by a factor of fifteen the amount that can be released. The films do not affect cell viability and exhibit poor cell adhesion. The straightforward synthesis and predictability of porosity enables the tuning of the amount of drug that can be loaded.

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Blue organic light-emitting diode using 1,4-bis(1,1-diphenyl-2-ethenyl)benzene as an emitter

Cited by 21 publications

References 15 publications

1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes

1,4-bis(2,2-diphenylethenyl)benzene as an efficient emitting material for organic light emitting diodes

Energy transfer in polystyrene containing pendant stilbene chromophores

Porous polysulfone coatings for enhanced drug delivery

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