2010
DOI: 10.1038/pj.2010.1
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New poly(4,4′-dicyano-4″-vinyl-triphenylamine) host material for single-layer Ir complex phosphorescent light-emitting devices

Abstract: We report a new host material for iridium complex light-emitting devices, poly(4,4¢-dicyano-4 00 -vinyl-triphenylamine) (PCNVTPA), which was synthesized by nitroxide-mediated free radical polymerization. The incorporation of electron-withdrawing cyano groups led to a significant variation in electronic energy levels and luminescence characteristics in comparison with the parent poly(4-vinyltriphenylamine) (PVTPA). The prepared organosoluble PCNVTPA and PVTPA had number-average molecular weights (M n ) of 10 20… Show more

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Cited by 11 publications
(1 citation statement)
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“…2,2′-Azobis­(isobutyronitrile), 3-chloropropionyl chloride, aluminum­(III) chloride, bis­(2-bromoethyl) ether, glycidol, phenothiazine, phenoxathiine, TEMPO, 4-hydroxy-TEMPO, thianthrene, and tris­(4-bromophenyl)­amine were purchased from Tokyo Chemical Industry Co. Diethylzinc, sodium hydride, and tris­(4-bromophenyl)­ammoniumyl hexachloro­antimonate were obtained from Sigma-Aldrich Co. Other chemicals were purchased from Tokyo Chemical Industry, Sigma-Aldrich, or Kanto Chemical Co. All reagents were used as received unless otherwise noted. 2,2,6,6-Tetramethylpiperidine-1-oxoammonium tetrafluoroborate (TEMPO + BF 4 – ), poly­(TEMPO-substituted glycidyl ether) ( P2a ), poly­(thianthrene-substituted norbornene) ( P4a ), 4-bromo-4′,4″-dicyano­triphenylamine ( 6 ), poly­(4,4′-dicyano-4″-vinyl­triphenylamine) ( P6 ), and poly­(9-vinyl-3,6-dichloro­carbazole) ( P7 ) , were synthesized based on the previous reports. For electrode fabrication, poly­(vinylidene difluoride) (PVdF) (KF Polymer, Kureha Chemical Co.), LiFePO 4 (Toshima Manufacturing Co., 150 mAh/g), LiCoO 2 (Toshima, 140 mAh/g), acetylene black (AB) (Denka Co.), vapor grown carbon fiber (VGCF) (Showa Denko Co.), and single-walled carbon nanotube (SWNT) (Meijo Nano Carbon Co.) were obtained from different companies.…”
Section: Methodsmentioning
confidence: 99%
“…2,2′-Azobis­(isobutyronitrile), 3-chloropropionyl chloride, aluminum­(III) chloride, bis­(2-bromoethyl) ether, glycidol, phenothiazine, phenoxathiine, TEMPO, 4-hydroxy-TEMPO, thianthrene, and tris­(4-bromophenyl)­amine were purchased from Tokyo Chemical Industry Co. Diethylzinc, sodium hydride, and tris­(4-bromophenyl)­ammoniumyl hexachloro­antimonate were obtained from Sigma-Aldrich Co. Other chemicals were purchased from Tokyo Chemical Industry, Sigma-Aldrich, or Kanto Chemical Co. All reagents were used as received unless otherwise noted. 2,2,6,6-Tetramethylpiperidine-1-oxoammonium tetrafluoroborate (TEMPO + BF 4 – ), poly­(TEMPO-substituted glycidyl ether) ( P2a ), poly­(thianthrene-substituted norbornene) ( P4a ), 4-bromo-4′,4″-dicyano­triphenylamine ( 6 ), poly­(4,4′-dicyano-4″-vinyl­triphenylamine) ( P6 ), and poly­(9-vinyl-3,6-dichloro­carbazole) ( P7 ) , were synthesized based on the previous reports. For electrode fabrication, poly­(vinylidene difluoride) (PVdF) (KF Polymer, Kureha Chemical Co.), LiFePO 4 (Toshima Manufacturing Co., 150 mAh/g), LiCoO 2 (Toshima, 140 mAh/g), acetylene black (AB) (Denka Co.), vapor grown carbon fiber (VGCF) (Showa Denko Co.), and single-walled carbon nanotube (SWNT) (Meijo Nano Carbon Co.) were obtained from different companies.…”
Section: Methodsmentioning
confidence: 99%