Polyfluorenes polymer light-emitting

J.-H. Lee and D.-H. Hwang, Alkoxyphenyl-substituted polyfluorene a stable blue-light-emitting polymer with good solution processability, Chem. Commune. 2836-2837, 2003. 

S. Setayesh, A.C. Grimsdale, T. Weil, V. Enkelmann, K. Mullen, F. Meghdadi, E.J.W. List, and G. Leising, Polyfluorenes with polyphenylene dendron side chains toward non-aggregating, light-emitting polymers, J. Am. Chem. Soc., 123 946-953, 2001. 

Light-emitting polymers [46,48] are a more recent development and may eventually prove superior to small-molecule OLED. Typical polymers are the green poly(para-phenylene vinylene) (PPV 53), the orange-red dialkoxy derivatives (54), and the blue polyfluorene (55) [48],... 

Scheme 2 White light-emitting polymers based on polyfluorene derivatives with Ir complex on the side-chain...

Scheme 4 Chemical structure of white light-emitting polymer based on polyfluorene with Ir complex on the main-chain...

Setayesh, S., et al. 2001. Polyfluorenes with polyphenylene dendron side chains Toward nonaggregating, light-emitting polymers. J Am Chem Soc 123 946. 

Polyfluorene is an important blue light-emitting polymer which has been studied for applications in the emissive layers in LEDs because of its high chemical and thermal stability as well as its high fluorescence quantum yield [63],... 

T. van Woudenbergh, J. Wildeman, P.W.M. Blom, J.J.A.M. Bastiaansen, and B.M.W. Langeveld-Voss, Electron-enhanced hole injection in blue polyfluorene-based polymer light-emitting diodes, Adv. Fund. Mater., 14 677-683, 2004. 

A. Pogantsch, F.P. Wenzl, E.J.W. List, G. Leising, A.C. Grimsdale, and K. Mullen, Polyfluorenes with dendron side chains as the active materials for polymer light-emitting devices, Adv. Mater., 14 1061-1064, 2002. 

Q. Peng, M. Xie, Y. Huang, Z. Lu, and D. Xiao, New series of highly phenyl-substituted polyfluorene derivatives for polymer light-emitting diodes, J. Polym. ScL, Part A Polym. Chem., 42 2985-2993, 2004. 

Rhenium(I) tricarbonyl-2,2 -bipyridine moieties were used to cap both ends of a poly fluorine, yielding Re-capped Re(bpy)(CO)3(py)-X-(py)(CO)3(bpy)Re 2+ polymers, where X = polyfluorene [51, 52], The polymers with and without the Re caps were spin-coated from their solutions in CH2C12 onto an ITO surface previously modified with a layer of poly(styrene sulfonic acid), doped with poly(ethylenedioxythiophene). The LED (light-emitting device) was then topped with a layer of Ca/Al. The photoluminescence (PL) and electroluminescence seen were consistent with the presence of [Re(bpy)(CO)3(py)]+ [158],... 

Keywords Device performance Electron-transport moiety Hole-transport moiety Polyfluorenes Polymer light-emitting diode... 

Abstract Poly(dibenzosilole)s are an emerging class of polymers with similar optoelectronic properties to polyfluorenes. With increased stability towards oxidation, several poly(dibenzosilole)-based devices, such as light emitting diodes, have shown improved performance over their polyfluorene counterparts. As a consequence of reduced conjugation in the polymer chain, some poly(dibenzosilole)s have high triplet excited state energies, which make them suitable hosts for blue triplet emitters in electrophosphores-cent devices. 

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