TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation method is given. Preferred Components: The organic electroluminescent device includes a first electrode, and a second electrode. The organic layer is laminated between the first and second electrodes, and includes a light-emitting layer, a hole injection layer, a hole-transport layer, an electron injection layer, and an electron-transport layer. Preferred Definitions:    R3 = 2,3,4,5,6-pentadeuteriophenyl, 2,3,4,5,6,7,8-heptadeuterio-1-naphthyl, 1,3,4,5,6,7,8-heptadeuterio-2-naphthyl, 4-(2,3,4,5,6-pentadeuteriophenyl)phenyl, 2,3,5,6-tetradeuterio-4-phenyl-phenyl, 2,3,5,6-tetradeuterio-4-(2,3,4,5,6-pentadeuteriophenyl)cyclohexa-1,5-dien-1-yl, 2,3,5,6,7,8-hexadeuterio-4-phenyl-1-naphthyl, 4-(2,3,4,5,6-pentadeuteriophenyl)-1-naphthyl, 2,3,5,6,7,8-hexadeuterio-4-(2,3,4,5,6-pentadeuteriophenyl)-1-naphthyl, 1,3,4,5,7,8-hexadeuterio-6-phenyl-2-naphthyl, 6-(2,3,4,5,6-pentadeuteriophenyl)-2-naphthyl, 1,3,4,5,7,8-hexadeuterio-6-(2,3,4,5,6-pentadeuteriophenyl)-2-naphthyl, 2,3,5,6-tetradeuterio-4-(1-naphthyl)phenyl, 4-(2,3,4,5,6,7,8-heptadeuterio-1-naphthyl)phenyl, 2,3,5,6-tetradeuterio-4-(2,3,4,5,6,7,8-heptadeuterio-1-naphthyl)phenyl, 2,3,5,6-tetradeuterio-4-(1-naphthyl)phenyl, 4-(1,3,4,5,6,7,8-heptadeuterio-2-naphthyl)phenyl, 2,3,5,6-tetradeuterio-4-(1,3,4,5,6,7,8-heptadeuterio-2-naphthyl)phenyl, 4-(4-(2,3,4,5,6-pentadeuteriophenyl)phenyl)phenyl, 4-(2,3,5,6-tetradeuterio-4-(2,3,4,5,6-pentadeuteriophenyl)phenyl)phenyl, 4-(3-(2,3,4,5,6-pentadeuteriophenyl)phenyl)phenyl, 4-(2,3,4,6-tetradeuterio-5-(2,3,4,5,6-pentadeuteriophenyl)phenyl)phenyl, 5-(2,3,4,5,6-pentadeuteriophenyl)-2-thienyl, 5-(4-(2,3,4,5,6-pentadeuteriophenyl)phenyl)-2-thienyl, 5-(2,3,5,6-tetradeuterio-4-(2,3,4,5,6-pentadeuteriophenyl)phenyl)-2-thienyl, 9,9-dimethyl-7-(2,3,4,5,6-pentadeuteriophenyl)fluoren-2-yl, 7-(2,3,4,5,6-pentadeuteriophenyl)-9,9-diphenyl-fluoren-2-yl or 7'-(2,3,4,5,6-pentadeuteriophenyl)-9,9'-spirobi(fluorene)-2'-yl.    SPECIFIC COMPOUNDS - 168 Compounds (I) are specifically claimed e.g. 9,9-dimethylfluoren-2-amine of formula (Ia) to (Ie).    EXAMPLE - No suitable example given.