Chemistry Letters, Vol.31, No.10, 984-985, 2002
A new class of high-performance red-fluorescent dyes for organic electroluminescent devices, [7-diethylamino-3-(2-thienyl)chromen-2-ylidene]-2,2-dicyanovinylamine and {10-(2-thienyl)-2,3,6,7-tetrahydro-1H,5H-chromeno[8,7,6-ij]quinolizin-11 -ylidene}-2,2-dicyanovinylamine
A new and better generation of red-fluorescent dyes based on a chromene-2-ylidene moiety, [7-diethylamino-3-(2-thienyl)chromen-2-ylidene]-2,2-dicyanovinylamine (ACY) and (10-(2-thienyl)-2,3,6,7-tetrahydro-1H,5H-chromeno[8,7,6-ij]quinolizin-11 -ylidene}-2,2-dicyanovinylamine (CQY), has been designed and synthesized, and has been proven to function as excellent red-emitting dopants in high-performance red-emitting organic electroluminescent devices.