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- W2073852306 abstract "Abstract Two novel green-emitting cyclometalated iridium complexes of (Buppy) 2 Ir(Tfl-pic) and (Buppy) 2 Ir(Brfl-pic) were synthesized and characterized, in which Buppy is 2-(4- tert -butylphenyl)pyridine, Tfl-pic is 6-(6′-(9″-octyl-2″,7″-bi(9,9-dioctylfluoren-2-yl)fluoren-9″-yl)hexyloxy) picolinic acid and Brfl is 6-(6′-(2″,7″-di-bromo-9″-octylfluoren-9″-yl)hexyloxy) picolinic acid. Their thermal property, dispersibility and optophysical properties were investigated. Both iridium complexes present intense UV absorption bands and photoluminescence performance in CH 2 Cl 2 . Single-emissive-layer polymer light-emitting devices using (Buppy) 2 Ir(Tfl-pic) and (Buppy) 2 Ir(Brfl-pic) as a single dopant and a blend of poly(vinylcarbazole) and 2-(4-biphenyl)-5-(4- tert -butyl-phenyl)-1,3,4-oxadiazole as the host matrix were fabricated. The (Buppy) 2 Ir(Tfl-pic)-doped devices exhibited a maximum current efficiency of 2.44 cd A −1 . As expected, the phase separation and concentration quenching of these iridium complexes in the devices are efficiently suppressed due to appending bulky fluorene derivatives on the picolinic acid unit by a non-conjugated connection." @default.
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- W2073852306 date "2014-07-01" @default.
- W2073852306 modified "2023-09-23" @default.
- W2073852306 title "Novel iridium complexes containing alkylfluorene functionalized picolinic acid ancillary ligand: Synthesis, optophysics and electroluminescence properties" @default.
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- W2073852306 doi "https://doi.org/10.1016/j.jorganchem.2014.03.015" @default.
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