A tetra-substituted chrysene: orientation of multiple electrophilic substitution and use of a tetra-substituted chrysene as a blue emitter for OLEDs.
The first tetra-substituted non-fused chrysene, 3,6,9,12-tetrakis(4-tert-butylphenyl)chrysene with blue electroluminescence at 450 nm, and with a radiance of 500 cd m(-2), was synthesized by a two-step procedure: direct bromination of chrysene in trimethyl phosphate, followed by palladium-catalyzed cross-coupling of tetrabromochrysene and tert-butylphenylboronic acid .
Ionkin
Alex S
AS
DuPont Central Research & Development, Experimental Station, Wilmington, Delaware 19880-500, USA. alex.s.ionkin@usa.dupont.com
Marshall
William J
WJ
Fish
Brian M
BM
Bryman
Lois M
LM
Wang
Ying
Y
D002911:Chrysenes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006842:Hydrocarbons, Brominated / Q000138:chemical synthesis / Q000737:chemistry*; D049449:Luminescence
D002911:Chrysenes; D006842:Hydrocarbons, Brominated