Polyfluorene electroluminescence

A.J. Campbell, D.D.C. Bradley, and H. Antoniadis, Dispersive electron transport in an electroluminescent polyfluorene copolymer measured by the current integration time-of-flight method, Appl. Phys. Lett., 79 2133-2135, 2001. 

Jin Y, Kim JY, Park SH, Kim J, Lee S, Lee K, et al. Syntheses and properties of electroluminescent polyfluorene-based conjugated polymers, containing oxadiazole and carbazole units as pendants, for LEDs. Polymer 2005 46(26) 12158-65. 

Lupton, J.M., M.R. Craig, and E.W. Meijer. 2002. On-chain defect emission in electroluminescent polyfluorenes. Appl Phys Lett 80 (24) 4489-4491. 

Redecker, M., Bradley, D., Inbasekaran, M., Woo, E. Nondispersive hole transport in an electroluminescent polyfluorene. Appl. Phys. Lett. 74, 1400-1403 (1999)... 

M. Grell, W. Knoll, D. Lupo, A. Miesel, T. Miteva, D. Neher, H.-G. Nothofer, U. Scherf, and A. Yasuda, Blue polarized electroluminescence from a liquid crystalline polyfluorene, Adv. Mater., 11 671-675, 1999. 

F.-I. Wu, S. Reddy, and C.-F. Shu, Novel oxadiazole-containing polyfluorene with efficient blue electroluminescence, Chem. Mater., 15 269-274, 2003. 

D Neher, Polyfluorene homopolymers conjugated liquid-crystalline polymers for bright blue emission and polarized electroluminescence, Macromol. Rapid Common., 22 1365-1385, 2001. 

HG Nothofer, A Meisel, T Miteva, D Neher, M Forster, M Oda, G Lieser, D Sainova, A Yasuda, D Lupo, W Knoll, and U Scherf, Liquid crystalline polyfluorenes for blue polarized electroluminescence, Macromol. Symp., 154 139-148, 2000. 

M Oda, HG Nothofer, G Lieser, U Scherf, SCJ Meskers, and D Neher, Circularly polarized electroluminescence from liquid-crystalline chiral polyfluorenes, Adv. Mater., 12 362-365, 2000. 

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],... 

Low polarisation ratios (<2 1) for absorption had also been found for amorphous PPV (1) deposited from solution by spin-coating on rubbed poly(tetrafluoroethylene) [PTFE]. It is evident that this could be improved on by making use of the high order parameter and self-organising properties of the nematic phase of liquid crystalline electroluminescent polymers such as those (16, 28 and 78-82) shown in Table 6.16. - 2 ° This was then found subsequently to be the case using thermotropic liquid crystalline polyfluorenes, such as 28 and 80 shown in Table 6.6 and segmented PPV derivatives, such as 81. The nematic phase exhibits the lowest viscosity of... 

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