TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises: (a) coupling a boronic acid or a boronic acid derivative of Ar1 with a bromo-chloro-bis(carboxylic acid ester) derivative of Ar2; (b) coupling the reaction products of (a) with a boronic acid or a boronic acid derivative of Ar3; (c) converting the carboxylic acid ester groups to alcohol groups; and (d) cyclizing under acidic conditions. Preferred Components: The compound (I) is useful as emitting material or the host-material in an emitting layer or as hole transport or hole injection material in a hole transport- or a hole injection layer or as an electron transport material in an electron transport layer. The host material is oligoarylene, oligoarylene containing condensed aromatic groups, anthracenes, oligoarylene vinylene, polypodal metal complexes, hole-conducting compounds, electron-conducting compounds, ketones, phosphine oxides, sulfoxides, boronic acid derivatives, benzanthracene or compounds of formula (Ar4-(Ar5)p-Ar6).Ar4, Ar5, Ar6 = aryl- or heteroaryl having 5-30 aromatic ring atoms, which can be substituted with at least one R1.Where the sum of pi -electrons in Ar4, Ar5, Ar6 amounts to at least 30, when p is 1, and at least 36, when p is 2, and at least 42, when p is 3. Preferred Definitions:    Ar1, Ar3 = 84 aryl moieties e.g. benzene moiety of formula (i), naphthalene moiety of formulae (ii), (iii) and (iv), anthracene moiety of formulae (v) and (vi), phenanthrene moiety of formulae (vii), pyrene moiety of formula (viii), fluoranthene moiety of formulae (ix), (x) and (xi), tetracene moiety of formula (xii), tetraphene moiety of formula (xiii), chrysene moiety of formula (xiv), benzo(c)phenanthrene moiety of formula (xv), triphenylene moiety of formula (xvi), perylene moiety of formula (xvii), benzo(k)tetraphene moiety of formula (xviii), benzo(m)tetraphene moiety of formulae (xix) and (xx) (all substituted by R1);    a = position of the linkage of Ar1 or Ar2 with Ar2;    b = position of the linkage of Ar1 or Ar3 with X; and    Ar2 = benzene moiety of formulae (xxi), (xxii), (xxiii), (xxiv) and (xxv), naphthalene moiety of formulae (xxvi), (xxvii), (xxviii), (xxix) and (xxx), phenanthrene moiety of formulae (xxxi), (xxxii), (xxxiii), (xxxiv), (xxxv) and (xxxvi), pyrene moiety of formulae (xxxvii), (xxxviii), (xxxix) and (xl), triphenylene moiety of formula (xli) and tetracene moiety of formulae (xlii), (xliii), (xliv) and (xlv).    Where the sum of all pi -electrons of Ar1, Ar2 and Ar3 is 28-50, preferably 28-36, when p is 1, and 34-56, preferably 34-40, when p is 2, and 40-62, preferably 40-46, when p is 3.    SPECIFIC COMPOUNDS - 112 Compounds (I) are disclosed, e.g. 6,6,16,16-tetramethyloctacyclo(20.6.2.02,17.03,15.05,13.07,12.019,29.026,30)triaconta-1(28),2(17),3(15),4,7(12),8,10,13,18,20,22,24,26,29-tetradecaene of formula (Ia), 6,6,20,20-tetramethylnonacyclo(24.6.2.02,21.03,19.05,17.07,16.010,15.023,33.030,34)tetratriaconta-1(32),2(21),3(19),4,7(16),8,10,12,14,17,22,24,26,28,30,33-hexadecaene, 6,6,24,24-tetramethyldecacyclo(28.6.2.02,25.03,23.05,21.07,20.08,13.014,19.027,37.034,38)octatriaconta-1(36),2(25),3(23),4,7(20),8,10,12,14,16,18,21,26,28,30,32,34,37-octadecaene, 6,6,24,24-tetramethyldecacyclo(28.6.2.02,25.03,23.05,21.07,20.010,19.011,16.027,37.034,38)octatriaconta-1(36),2(25),3(23),4,7(20),8,10,12,14,16,18,21,26,28,30,32,34,37-octadecaene and 6,6,20,20-tetramethylnonacyclo(24.6.2.02,21.03,19.05,17.07,16.09,14.023,33.030,34)tetratriaconta-1(32),2(21),3(19),4,7(16),8,10,12,14,17,22,24,26,28,30,33-hexadecaene.    EXAMPLE - Bromopyrene (28.9 g) was dissolved in tetrahydrofuran (275 ml) and cooled to -75 degrees C and at this temperature 2 M solution of n-butyllithium (52 ml) was added. Then 155 mmol of trimethyl borate (17.5 ml) was added. After warming to room temperature, chloro-bromo-terephthalic acid-diethyl-ester (34.5 g), sodium bicarbonate (22 g), tetrakis(triphenylphosphine)-palladium(0) (1.2 g), water (140 ml), toluene (280 ml) and ethanol (140 ml) were added and the mixture was heated to boil for 2 hours and further processed to give 2-chloro-5-pyren-1-yl-terephthalic acid diethyl ester (A) (33 g). (A) (43.5 g), 1-naphthylboronic acid (21.5 g) and cesium carbonate (58.1 g) was added in dioxane (230 ml) and saturated with nitrogen. Then 1 M of tri-tert-butylphosphine in toluene (2.7 ml) and palladium(II)acetate (300 mg) were added and further processed to give 2-naphthalen-1-yl-5-pyren-1-yl-terephthalic acid diethyl ester (B) (44.2 g). (B) (30 g) was dissolved in tetrahydrofuran. Then 3 M methylmagnesium chloride solution in tetrahydrofuran (110 ml) was added and further processed to give 2-(4-(1-hydroxy-1-methyl-ethyl)-2-naphthalen-1-yl-5-pyren-1-yl-phenyl)-propan-2-ol (C) (26.3 g). (C) (26.3 g) was dissolved in dichloromethane (750 ml), then methane sulfonic acid (45 ml) in polyphosphoric acid (70 g) was added and stirred at -20 degrees C and further processed to obtain 1,1-dimethylbenzindeno-1,1-dimethylindeno(a)pyrene with a purity of greater than 99.9%.