Abstract: An organic electroluminescent device having a light emitting layer that contains the first to third compounds satisfying the following formulae has a low drive voltage and a high light emission efficiency. ES1(1)>ES1(2)>ES1(3), ELUMO(2)?ELUMO(3). ES1(m) is the lowest excited singlet energy of the m'th compound, ELUMO(n) is the LUMO energy of the n'th compound (m, n=1 to 3).

Abstract: The present disclosure relates to compounds of Formula (I) as useful materials for OLED's. X is O or S; Y1 to Y4 are N or R—C; at least one of R and R5 to R8 is CN or heteroaryl; and at least other one of R and R5 to R8 is diarylamino.

Abstract: An organic light-emitting device having an organic mixed layer that contains a first organic compound and a second organic compound and a third organic compound satisfying ES1(A)>ES1(B)>ES1(C). ES1(A), ES1(B) and ES1(C) each represent a lowest excited singlet energy level of the first organic compound, the second organic compound and the third organic compound, respectively. The second organic compound and the third organic compound are delayed fluorescent materials. The invention provides an organic light-emitting device having a long lifetime and a high light emission efficiency.

Abstract: The present disclosure relates to compounds capable of emitting delayed fluorescence, and uses of the compounds in organic light-emitting diodes.

Abstract: The present disclosure relates to compounds of Formula (I) as useful materials for OLED's. R is hydrogen or phenyl substituted with at least one alkyl; and D, D? and D? independently have diarylamino or indolyl moiety.

Abstract: The present disclosure relates to compounds of Formula (I) as useful materials for OLED's. X is O or S; Y1 to Y4 are N or R—C; at least one of R and R5 to R8 is CN or heteroaryl; and at least other one of R and R5 to R8 is diarylamino.

Abstract: [Object] To provide a porous carbon material that is able to adsorb desired substances efficiently. [Solving Means] A porous carbon material of the present invention uses peat as a raw material, and has a total of volumes of fine pores having a diameter of from 1×10?8 m to 2×10?7 m, obtained by non-localized density functional theory method, of 0.5 cm3/g or more, or has a volume of fine pores obtained by BHJ method of 0.5 cm3/g or more.

Abstract: [Object] To provide a porous carbon material that is able to adsorb desired substances efficiently. [Solving Means] A porous carbon material of the present invention uses peat as a raw material, and has a total of volumes of fine pores having a diameter of from 1×10?8 m to 2×10?7 m, obtained by non-localized density functional theory method, of 0.5 cm3/g or more, or has a volume of fine pores obtained by BHJ method of 0.5 cm3/g or more.

Abstract: An organic electroluminescence device capable of realizing both high light emitting efficiency and high reliability with an inexpensive structure is provided. The organic electroluminescence device includes an organic layer including a light emitting layer between an anode and a cathode. The anode has a laminated structure including a first layer composed of aluminum (Al) or an alloy containing aluminum as a main component and a second layer that is provided between the first layer and the organic layer and is composed of an alloy containing aluminum as a main component, and a resistance of the first layer is lower than a resistance of the second layer.

Abstract: An organic electroluminescence device capable of realizing both high light emitting efficiency and high reliability with an inexpensive structure is provided. The organic electroluminescence device includes an organic layer including a light emitting layer between an anode and a cathode. The anode has a laminated structure including a first layer composed of aluminum (Al) or an alloy containing aluminum as a main component and a second layer that is provided between the first layer and the organic layer and is composed of an alloy containing aluminum as a main component, and a resistance of the first layer is lower than a resistance of the second layer.