28342-75-8Relevant articles and documents
The effect of frontier orbital distribution of the core structure on the photophysics and device performances of thermally activated delayed fluorescence emitters
Jung, Mina,Lee, Kyung Hyung,Hong, Wan Pyo,Lee, Jun Yeob
, p. 7760 - 7767 (2019)
The effect of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) distribution of the core structure on the thermally activated delayed fluorescence (TADF) behavior of the TADF emitters was investigated. Dibenzofuran was used as the core structure of the TADF materials, and its 2 and 3 positions were substituted with a donor and an acceptor. Two TADF emitters with the donor and acceptor positions exchanged with each other were synthesized and suggested that the substitution of the donor at the LUMO dominant position and the acceptor at the HOMO dominant position is beneficial to improve the efficiency of the TADF OLEDs. It was described that the substitution positions of the donor and acceptor to the core structure should be managed to increase the quantum efficiency of the TADF devices by enlarged orbital overlap.
Heteroleptic Ir(III) phosphors with bis-tridentate chelating architecture for high efficiency OLEDs
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Page/Page column 10; 11, (2016/01/09)
A bis-tridentate iridium complex represented by a formula (I): where R3 to R8, R21 to R23, R9, R10, X1, X2, and X3 are as defined in the specification.
COMPOUNDS FOR THE REDUCTION OF BETA-AMYLOID PRODUCTION
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Page/Page column 38, (2012/12/13)
Compounds of formula (I), including pharmaceutically acceptable salts thereof, are set forth herein: wherein R1, R2, R3, R4, R5, and R6 are independently hydrogen, C1-C6 alkyl or C1-C6 cycloalkyl; Y and Z are independently a C6-C10- aryl group or a 5-10 membered heterocyclic group, wherein each Y and Z group can be optionally substituted with from 0-3 substituents selected from halogen, amino, C1-4alkylamino, C1-4dialkylamino, haloC1-4 alkyl, OH, CN, C1-C6 alkyl or cycloalkyl, C1-C6 alkoxy, and C2-C4 alkynyl; L is either a bond or is -NHCO-; L and Z together can be absent; and m is 1, 2 or 3.