TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): The preparation of (I) comprises carrying out ring closure reaction to obtain at least one condensed heteroaromatic five-membered ring. Preferred Components: (I) comprises 30 pentacyclo(10.7.0.0(2,10).0(3,8).0(14,19))nonadeca-1(12),2(10),3,5,7,14(19),15,17-octaene derivatives, e.g. pentacyclo(10.7.0.0(2,10).0(3,8).0(14,19))nonadeca-1(12),2(10),3,5,7,14(19),15,17-octaene derivatives of formulae (II)-(XI). SPECIFIC COMPOUNDS - 66 Compounds (I) are disclosed, e.g. 6-o-biphenyl-bis-(1)benzothieno(2,3-b:3',2'-d)pyrrole (Ia), 2-(dibenzo(b,d)thiophen-2-yl)-2H-dibenzofuro(2,3-b:3',2'-d)pyrrole, 2,4,6-trimethylphenyl-bis(1)benzothieno(2,3-b:3',2'-d)pyrrole, 2,4,6-triphenyl-pyrimidinyl-bis(1)benzothieno(2,3-b:3',2'-d)pyrrole, and 3-((Z)-buta-1,3-dienyl)-1-(3-(4,6-diphenyl-(1,3,5)triazin-2-yl)-phenyl)-2-methyl-1H-benzo(4,5)thieno(2,3-b)pyrrole.    EXAMPLE - Benzo(b)thiophene (100 g) was suspended with N-bromosuccinimide (145 g) in chloroform (1000 ml) and glacial acetic acid (1000 ml) and stirred at room temperature for 24 hours. The mixture was concentrated and purified to obtain 3-bromo-benzo(b)thiophene. The obtained 3-bromo-benzo(b)thiophene (50 g) was added with tetrahydrofuran (3000 ml), bis(triphenylphosphine) nickel(II) chloride (40 g), zinc (34.3 g) and N,N,N-tributyl-1-butanaminium iodide (101.6 g). The mixture was heated for 20 hours at 70 degrees C, then cooled to room temperature and water (400 ml) was added. The mixture was worked up to obtain (3,3')-bis-benzo(b)thiophenyl. The obtained (3,3')-bis-benzo(b)thiophenyl (10 g) was placed in acetic acid (250 ml) and bromine solution (8 ml) in acetic acid (10 ml) was added at -5 degrees C. The mixture was worked up to obtain 2,2'-dibromo-(3,3')-bis-benzo(b)thiophenyl. The obtained 2,2'-dibromo-(3,3')-bis-benzo(b)thiophenyl (21.2 g) was added with toluene (500 ml), tris(dibenzylideneacetone)dipalladium (2.3 g), tri-tert-butyl phosphine (10 ml) in toluene and sodium tert-butylate (11.5 g). Subsequently, 2-amino-biphenyl (6.8 g) was added. The mixture was heated for 20 hours to 110 degrees C, then cooled to room temperature, and water (400 ml) was added to obtain 6-o-biphenyl-bis-(1)benzothieno(2,3-b:3',2'-d)pyrrole.