TY - JOUR
T1 - Efficient cyano-containing electron-transporting polymers for light-emitting diodes
AU - Liu, M. S.
AU - Jiang, X.
AU - Herguth, P.
AU - Jen, A. K Y
PY - 2001
Y1 - 2001
N2 - Two copolymers composed of 9,9-di-n-hexylfluorene and 2,5-dicyanobenzene (PF-CNP (3:1) and PF-CNP (1:1)) were synthesized via the Suzuki coupling reaction. By attaching two electron-withdrawing cyano groups onto the phenylene ring, the electron affinity and conduction of polyfluorenes are greatly enhanced. The device based on PF-CNP (3:1) has a low turn-on voltage (3.4 V), bright blue emission (5430 cd/m2 at a bias voltage of 7.4 V), and a maximum external quantum efficiency of 0.50% due to both optimized electron affinity and conduction.
AB - Two copolymers composed of 9,9-di-n-hexylfluorene and 2,5-dicyanobenzene (PF-CNP (3:1) and PF-CNP (1:1)) were synthesized via the Suzuki coupling reaction. By attaching two electron-withdrawing cyano groups onto the phenylene ring, the electron affinity and conduction of polyfluorenes are greatly enhanced. The device based on PF-CNP (3:1) has a low turn-on voltage (3.4 V), bright blue emission (5430 cd/m2 at a bias voltage of 7.4 V), and a maximum external quantum efficiency of 0.50% due to both optimized electron affinity and conduction.
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U2 - 10.1021/cm010705f
DO - 10.1021/cm010705f
M3 - RGC 21 - Publication in refereed journal
SN - 0897-4756
VL - 13
SP - 3820
EP - 3822
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 11
ER -