TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No preparation is given. Preferred Compounds: The compound is also represented by chemical formulae A a,p-A b,p+1-(A c,p+2) x-(A d,p+3) y(II) , A a,p-A b,p+1-A c,p+2-A d,p+1-A e,p(III) and A a,p+2-A b,p+1-A c,p-A d,p+1-A e,p+2 (IV).p=0; andx and y=0 or 1. Preferred Definitions:    A aand A e=substituted or unsubstituted phenyl, pyridine, pyridazine, pyrimidine, pyazine, triazine, furan, thiophene, oxazole, dithiazole, oxadiazole, thiadiazole, hydrogen, halogen, cyano, hydroxyl, amino, nitro, carboxyl, alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, phenyl, biphenyl, terphenyl, stilbene, naphthyl, anthracenyl, phenanthrene, pyrenyl, phenylenyl, furan, thiophene, benzothiopene, thiazol, thiadiazole, oxazole, oxadiazole, N-arylimidazole, pyridine, pyradazine, pyrimidine, pyazine, triazine, quinolinyl, isoquinoline, cinnoline, quinoxaline, N-aryl purine, benzoxazol, benzothiazol, acridin, phenanthrolin, heteroaryl or compound of chemical formula (VI-XV or XVI); and    A band A d=arylene, 2,3-tetrazole-diyl, 1,3-triazole-diyl, 1,5-benzimidazole-diyl, 2,5-benzothiazole-diyl, 2,5-pyrimidine-diyl, 3-phenyl-2,5-tetrazole-diyl, 2,5-pyridine-diyl, 2,4-furan-diyl, 1,3-piperidine-diyl, 2,4-morpholine-diyl, 1,2-thiophene-diyl, 1,4-thiophene-diyl, quinoline-diyl, isoquinoline-diyl, phenylene, naphthylene, anthracene or phenanthrene.    R 1-R 65and R 67-R 93=CR 2, CR 3or N;    B 1and B 2=independently NR 4, S or O;    R 2and R 4=independently H, halogen, cyano, hydroxy, amino, nitro, carboxy, substituted or unsubstituted alkyl, cycloalkyl, heterocycloalkyl, aryl or heteroaryl group; and    R 3=substituted or unsubstituted alkylene, cycloalkylene, heterocyclo-alkylene, arylene or heteroarylene.    SPECIFIC COMPOUNDS - 18 Compounds (I) are specifically claimed, e.g. 4-(4,6-dimethyl-1,3,5-triazyn-2-yl)-6-(6-(phenanthren-9-yl)pyridin-2-yl)2-methyl-pyrimidine, 4-(4,6-diphenyl-1,3,5-triazyn-2-yl)-2-(5-(4-trifluoromethyl phenyl)pyridine-3-yl)pyrimidine, 5-(5-(anthracen-9-yl)pyridine-2-yl)-2-(4,6-diphenyl-1,3,5-triazyn-2-yl)piperazine, 3-(anthracen-9-yl)-1-(4-(4,6-diphenyl-1,3,5-triazyn-2-yl)-2-methyl-pyrimidin-6-yl)isoquinoline and 2-(anthracen-9-yl)-6-(4,6-diphenyl-1,3,5-triazyn-2-yl)quinoline (I).    EXAMPLE - No suitable example given.