Abstract
Comparing the conventional vapor desposition process for OLEDs, the solution process using small molecules has merits of low production cost because of many reasons. For the solution process blue flourescent material, tertiary butyl (T) and anthracene (A) were first introduced as substituents to TAT core part, 2-tert-butyl-9,10-bis(3",5"-diphenylbiphenyl-4'-yl)anthracene (T-TAT) and 2-(9-anthracenyl)-9,10-bis(3",5"-diphenylbiphenyl-4'-yl)anthracene (A-TAT). All three materials indicated typical absorption band of anthracene in the range of 350 to 400 nm. T-TAT exhibited similar optical properties to TAT, but A-TAT has longer absorption and PL emission compared to other two compounds. In case of spin-coated film, A-TAT exhibited absorption maximum value of 408 nm and photoluminescence maximum value of 469 nm. T-TAT and A-TAT can be applicable to solution process as a blue fluorescence material.
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