TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The organic layer further comprises metal(s) comprising organic metals of group 1, group 2, 4th period and 5th period transition metals, lanthanide metals or d-transition elements.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): Preparation of (I) comprises: reacting cyclic compounds of formula (aa) with aryl bromide compounds of formula (Br-Ar1-Br) to give cyclic aryl bromide compounds of formula (bb); reducing (bb) to give aryl aldehyde compounds of formula (cc); reducing (cc) to give aryl alcohol compounds of formula (dd); reacting (dd) to give aryl ester compounds of formula (ee); reducing substituted 2,7-dibromo-9H-fluorene compounds of formula (ff) to give substituted 7-bromo-9H-fluorene-2-carbaldehyde compounds of formula (gg); reacting (gg) with cyclic compounds of formula (g1) to give cyclic 9H-fluorene-2-carbaldehyde compounds of formula (hh); and reacting (ee) and (hh) to give (I). Preferred Components: The host is anthracene derivative of formula (II), benz(a)anthracene derivative of formula (III), anthracene derivative of formula (IV) or benz(a)anthracene derivative of formula (V). The organic layer comprises compound(s) comprising arylamine compounds or styryl arylamine compounds. The organic layer comprises an electroluminescent layer and a charge generating layer.R101, R102 = H, (1-60C)alkyl, halo, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, 5- or 6-membered heterocycloalkyl containing heteroatom(s) comprising N, O or S or (3-60C)cycloalkyl, where (hetero)aryl of R101 and R102 may be further substituted by (1-60C)alkyl, halo(1-60C)alkyl, (1-60C)alkoxy, (3-60C)cycloalkyl, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, halo, CN, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl or tri(6-60C)arylsilyl;R103-R106 = H, (1-60C)alkyl, (1-60C)alkoxy, halo, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, (5-60C)cycloalkyl or (6-60C)aryl, where the cycloalkyl or (hetero)aryl of R103-R106 may be further substituted by (1-60C)alkyl with or without halo, (1-60C)alkoxy, (3-60C)cycloalkyl, halo, CN, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl or tri(6-60C)arylsilyl;P1, P2 = chemical bond or (6-60C)arylene with or without comprising (1-60C)alkyl, (1-60C)alkoxy, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S or halo;Ar21, Ar22 = phenyl moiety, naphthalene moiety, fluorene moiety of formula (f), indene moiety of formula (g), triphenylene moiety, phenanthrene moiety, pyrene moiety or chrysene moiety;L11 = (6-60C)arylene, (4-60C)heteroarylene containing heteroatom(s) comprising N, O or S or 11,12-dihydro-indeno(2,1-a)fluorene group of formula (h), where (hetero)arylene of L11 is substituted by (1-60C)alkyl, (1-60C)alkoxy, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, or halo; eitherR111-R114 = H, (1-60C)alkyl or (6-60C)aryl; oreach of R111-R114 linked to an adjacent substituent via (3-60C)alkylene or (3-60C)alkenylene with or without a fused ring = form an alicyclic ring, or a mono- or polycyclic aromatic ring;R121-R124 = H, (1-60C)alkyl, (1-60C)alkoxy, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, or halo; oreach of R121-R124 linked to an adjacent substituent via (3-60C)alkylene or (3-60C)alkenylene with or without a fused ring = form an alicyclic ring, or a mono- or polycyclic aromatic ring;L21, L22 = chemical bond, (6-60C)arylene or (3-60C)heteroarylene containing heteroatom(s) comprising N, O or S, where (hetero)arylene may be further substituted by (1-60C)alkyl, halo, CN, (1-60C)alkoxy, (3-60C)cycloalkyl, (6-60C)aryl, (3-60C)heteroaryl containing heteroatom(s) comprising N, O or S, tri(1-30C)alkylsilyl, di(1-30C)alkyl(6-30C)arylsilyl or tri(6-30C)arylsilyl; eitherR201-R219 = H, halo, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, 5- or 6-membered heterocycloalkyl containing heteroatom(s) comprising N, O or S, (3-60C)cycloalkyl, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)arylsilyl, adamantyl, (7-60C)bicycloalkyl, (2-60C)alkenyl, (2-60C)alkynyl, (1-60C)alkoxy, CN, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, carboxyl, nitro or OH; oreach of R201-R219 may be linked to an adjacent substituent via (3-60C)alkylene or (3-60C)alkenylene with or without a fused ring = form an alicyclic ring, or a mono- or polycyclic aromatic ring;Ar31 = (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, 5- or 6-membered heterocycloalkyl containing heteroatom(s) comprising N, O or S, (3-60C)cycloalkyl, adamantyl, (7-60C)bicycloalkyl or a substituent comprising phenyl group of formula (i), heterocyclic group of formula (j) or fused anthracene moiety of formula (k);R220-R232 = H, halo, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, 5- or 6-membered heterocycloalkyl containing heteroatom(s) comprising N, O or S, (3-60C)cycloalkyl, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)arylsilyl, adamantyl, (7-60C)bicycloalkyl, (2-60C)alkenyl, (2-60C)alkynyl, (1-60C)alkoxy, CN, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, carboxyl, nitro or OH;E1, E2 = chemical bond, -(CR233R234)q-, -N(R235)-, -(S)-, -(O)-, -Si(R236)(R237)-, -P(R38)-, -C(=O)-, -B(R239)-, -ln(R240)-, -Se-, -Ge(R241)(R242)-, -Sn(R243)(R244)-, -Ga(R245)- or -(R246)C=C(R247)-; eitherR233-R247 = H, halo, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, 5- or 6-membered heterocycloalkyl containing heteroatom(s) comprising N, O or S, (3-60C)cycloalkyl, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)arylsilyl, adamantyl, (7-60C)bicycloalkyl, (2-60C)alkenyl, (2-60C)alkynyl, (1-60C)alkoxy, CN, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, carboxyl, nitro or OH; oreach of R233-R247 linked to an adjacent substituent via (3-60C)alkylene or (3-60C)alkenylene with or without a fused ring = form an alicyclic ring, or a mono- or polycyclic aromatic ring, where (hetero)aryl, heterocycloalkyl, adamantyl or bicycloalkyl of Ar31, or alkenyl, alkynyl, (cyclo)alkyl, heterocycloalkyl, (hetero)aryl, arylsilyl, alkylsilyl, alkylamino or arylamino of R201-R232 may be further substituted by halo, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl containing heteroatom(s) comprising N, O or S, 5- or 6-membered heterocycloalkyl containing heteroatom(s) comprising N, O or S, (3-60C)cycloalkyl, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)arylsilyl, adamantyl, (7-60C)bicycloalkyl, (2-60C)alkenyl, (2-60C)alkynyl, (1-60C)alkoxy, CN, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, carboxyl, nitro or OH;p = 1-4; andq = 0-4. Preferred Definitions:    Ring A, Ring B1 = 26 heterocyclic groups e.g. piperidin-1-yl, morpholin-4-yl, thiomorpholin-4-yl, azepan-1-yl, 2,3,6,7-tetrahydro-azepin-1-yl, azepin-1-yl, 3,4-dihydro-2H-quinolin-1-yl, 9H-acridin-10-yl, phenothiazin-10-yl or phenoxazin-10-yl; and    Ar1 = 54 (hetero)cyclic moieties e.g. phenyl moiety, naphthalene moiety, anthracene moiety, chrysene moiety, phenanthrene moiety, triphenylene moiety, pyrene moiety, pyridine moiety, quinoline moiety, furan moiety, thiophene moiety, pyrazine moiety, dibenzothiophene moiety or dibenzofuran moiety.    SPECIFIC COMPOUNDS - 1332 Compounds (I) are disclosed e.g. (E)-1-(7-(2-(4-(3,4-dihydroquinolin-1(2H)-yl)phenyl)vinyl)-9,9-dimethyl-9H-fluoren-2-yl)-1,2,3,4-tetrahydroquinoline of formula (Ia), (E)-1-(7-(2-(7-(3,4-dihydroquinolin-1(2H)-yl)-9,9-dimethyl-9H-fluoren-2-yl)vinyl)-9,9-dimethyl-9H-fluoren-2-yl)-1,2,3,4-tetrahydroquinoline, (E)-1-(4-(2-(7-(3,4-dihydroquinolin-1(2H)-yl)-9,9-dimethyl-9H-fluoren-2-yl)vinyl)phenyl)-1,2,3,4-tetrahydroquinoline, (E)-1-(4-(2-(7-(3,4-dihydroquinolin-1(2H)-yl)-9,9-dimethyl-9H-fluoren-2-yl)vinyl)naphthalen-1-yl)-1,2,3,4-tetrahydroquinoline and (E)-1-(6-(2-(7-(3,4-dihydroquinolin-1(2H)-yl)-9,9-dimethyl-9H-fluoren-2-yl)vinyl)naphthalen-2-yl)-1,2,3,4-tetrahydroquinoline.    EXAMPLE - (4-(3,4-Dihydro-2H-quinolin-1-yl)-benzyl)-phosphonic acid diethyl ester (3.5 g) and 7-(3,4-dihydro-2H-quinolin-1-yl)-9,9-dimethyl-9H-fluorene-2-carbaldehyde (7.8 g) were added to a reactor and dried under reduced pressure. Tetrahydrofuran (150 ml) was added to it under nitrogen atmosphere and the mixture was stirred. Potassium tert-butoxide (4.14 g) dissolved in tetrahydrofuran (30 ml) was slowly added dropwise at 0 degrees C, and the mixture was slowly heated to room temperature. After stirring for 4 hours, water (300 ml) was poured upon completion of reaction. The produced solid was filtered and washed with methanol (500 ml) and worked up to give (E)-1-(7-(2-(4-(3,4-dihydroquinolin-1(2H)-yl)phenyl)vinyl)-9,9-dimethyl-9H-fluoren-2-yl)-1,2,3,4-tetrahydroquinoline (3.6 g).