NOVELTY - A dibenzofuran compound is new.    USE - The dibenzofuran compound is useful for electronic devices (e.g. electroluminescent device), electrophotographic photoreceptors, photoelectric converters, organic solar cells, switching elements, organic light emitting field effect transistors, image sensors, dye lasers, electroluminescent devices; and as transport material in hole blocking layer and/or emissive layer and/or as electron blocking layer. The electron transport layer, hole blocking layer, or emitting layer is used in apparatus selected from stationary visual display units; mobile visual display units; illumination units; keyboards; items of clothing; furniture; and wallpaper (all claimed).    ADVANTAGE - When used as electron transport material, hole blocking material and/or host material for phosphorescent emitters in electroluminescent devices, the dibenzofuran compounds may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.    DETAILED DESCRIPTION - A dibenzofuran compound of the formula (I), is new.    R1-R3=independently of each other H, F, a 3-18C cycloalkyl group, which can optionally be substituted by G; a 6-24C aryl group, which can optionally be substituted by G, a 2-30C heteroaryl group, which can optionally be substituted by G; a group of formula -Si(R91)(R92)(R93); formula (Xa); or formula (Xb);    R4=H, F, a 3-18C cycloalkyl group, which can optionally be substituted by G; a 6-24C aryl group, which can optionally be substituted by G, a 2-30C heteroaryl group, which can optionally be substituted by G; a group of formula -Si(R91)(R92)(R93); formula (Xc); or formula (Xd);    R91-R93=independently of each other a 1-25C alkyl group, or a 6-24C aryl group, which can optionally be substituted by G;    X1 and X2=independently of each other O, or S;    R5, R7, R9 and R11=independently of each other H, F, a 1-25C alkyl group, which can optionally be substituted by E and/or interrupted by D; a 1-25C alkoxy group; a 3-18C cycloalkyl group, which can optionally be substituted by G; a 6-10C aryl group, which can optionally be substituted by G, a 2-9C heteroaryl group, which can optionally be substituted by G;    R6 and R8=independently of each other H, a 1-25C alkyl group, a group of formula (Xa), or (Xb);    R10 and R10'=H, or a 1-25C alkyl group; or R10 is H, or a 1-25C alkyl group and R10' is CN; or R10 is CN and R10' is H, or a 1-25C alkyl group;    R12=a group of formula (Xa);    D=-CO-, -COO-, -S-, -SO-, -SO2-, -O-, -NR65-, -SiR70R71-, -POR72-, -CR63=CR64-, or -C?=C-;    E=-OR69, -SR69, -NR65R66, -COR68, -COOR67, -CONR65R66, -CN, or F;    G=E, or a 1-18C alkyl group, a 3-18C cycloalkyl group, a 6-24C aryl group, a 6-24C aryl group, which is substituted by F, 1-18C alkyl, or 1-18C is alkyl which is interrupted by O; a 2-30C heteroaryl group, or a 2-30C heteroaryl group, which is substituted by F, 1-18C alkyl, or 1-18C alkyl which is interrupted by O;    R63 and R64=independent of each other H, 6-18C aryl; 6-18C aryl which is substituted by 1-18C alkyl, or 1-18C alkoxy; 1-18C alkyl; or 1-18C alkyl which is interrupted by -O-;    R65 and R66=independently of each other a 6-18C aryl group; a 6-18C aryl which is substituted by 1-18C alkyl, or 1-18C alkoxy; a 1-18C alkyl group; or a 1-18C alkyl group, which is interrupted by -O-; or R65 and R66 together form a five or six membered ring;    R67=a 6-18C aryl group; a 6-18C aryl group, which is substituted by 1-18C alkyl, or 1-18C alkoxy; a 1-18C alkyl group; or a 1-18C alkyl group, which is interrupted by -O-;    R68=H; a 6-18C aryl group; a 6-18C aryl group, which is substituted by 1-18C alkyl, or 1-18C alkoxy; a 1-18C alkyl group; or a 1-18C alkyl group, which is interrupted by -O-;    R69=a 6-18C aryl; a 6-18C aryl, which is substituted by 1-8C alkyl, or 1-18C alkoxy; a 1-18C alkyl group; or a 1-18C alkyl group, which is interrupted by -O-;    R70 and R71=independently of each other a 1-18C alkyl group, a 6-18C aryl group, or a 6-18C aryl group, which is substituted by 1-18C alkyl; and    R72=a 1-18C alkyl group, a 6-18C aryl group, or a 6-18C aryl group, which is substituted by 1-18C alkyl, with the proviso that at least one of the substituents R1-R4, R6, R8 and R12 is a group of formula (Xa).    INDEPENDENT CLAIMS are included for:    (1) an electronic device comprising the dibenzofuran compound;    (2) an electron transport layer, hole blocking layer, or an emitting layer comprising the dibenzofuran compound; and    (3) an apparatus selected from stationary visual display units; mobile visual display units; illumination units; keyboards; items of clothing; furniture; wallpaper, comprising the organic electronic device, or the electron transport layer, hole blocking layer and/or the emitting layer.