GB2383036-A  (GEISSLER) - Polymer Advance Technology (1997), volume 8(2), pages 87-92;  (KUROKI) - Journal of Heterocyclic Chemistry (1981), volume 18(4), pages 709-714;  (MORIN) - Macromolecules (2001), volume 34(14), pages 4680-4682;  (PATRICK) - European Journal of Medicinal Chemistry (1997), volume 32(10), pages 781-793WO2003050086-A1  PATENT ABSTRACTS OF JAPAN vol. 005, no. 194 (C-082), 10 December 1981 (1981-12-10) & JP 56 115774 A (ASAHI GLASS CO LTD), 11 September 1981 (1981-09-11);  DATABASE CROSSFIRE BEILSTEIN Online Beilstein Institut zur F rderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 1570666 XP002234311 & BAIWIR: J. MOL. STRUCT., vol. 19, 1973, page 419-429;  DATABASE CROSSFIRE BEILSTEIN Online Beilstein Institut zur F rderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 4411180 XP002234313 & BHATIA; KAPIL: INDIAN J. CHEM. SECT. , vol. 23, no. 4, 1984, pages 296-299,;  DATABASE CROSSFIRE BEILSTEIN Online Beilstein Institut zur F rderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 7023979 XP002234312 & CARR ET AL.: J. LABELLED COMPD. RADIOPHARM., vol. 34, no. 9, 1994, pages 887-898,;  DATABASE CROSSFIRE BEILSTEIN [Online] Beilstein Institut zur F rderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 1570666 XP002234311 & BAIWIR: J. MOL. STRUCT., vol. 19, 1973, page 419-429;  DATABASE CROSSFIRE BEILSTEIN [Online] Beilstein Institut zur F rderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 4411180 XP002234313 & BHATIA; KAPIL: INDIAN J. CHEM. SECT. , vol. 23, no. 4, 1984, pages 296-299,;  DATABASE CROSSFIRE BEILSTEIN [Online] Beilstein Institut zur F rderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 7023979 XP002234312 & CARR ET AL.: J. LABELLED COMPD. RADIOPHARM., vol. 34, no. 9, 1994, pages 887-898,;  DOBARRO A ET AL: "SYNTHESIS OF SYMMETRIC AND ASYMMETRIC CARBAZOLYL MONOMERS AND THEIRSILOXANE POLYMERS. EFFECT OF THE 2,3,6,7,9-SUBSTITUTION IN THE CARBAZOLE UNIT ON ITS MESOMORPHIC BEHAVIOUR" MACROMOLECULAR CHEMISTRY AND PHYSICS, WILEY VCH, WEINHEIM, DE, vol. 198, no. 8, 1 August 1997 (1997-08-01), pages 2563-2581, XP000699073 ISSN: 1022-1352;  KUROKI M ET AL: "THE CHEMISTRY OF CARBAZOLES. VII. SYNTHESES OF METHYLCARBAZOLES" JOURNAL OF HETEROCYCLIC CHEMISTRY, HETEROCORPORATION. PROVO, US, vol. 18, June 1981 (1981-06), pages 709-714, XP009006175 ISSN: 0022-152X;  PATRICK ET AL.: "Anti-Pneumocystis carinii pneumonia activity of dicationic carbazoles" EUR. J. MED. CHEM., vol. 32, 1997, pages 781-93, XP002234310;  GEISSLER U ET AL: "POLYARYLENES ON THE BASIS OF ALKYLPYRROLE AND ALKYLCARBOZOLE DERIVATIVES AND THEIR OLIGOMERIC MODEL SYSTEMS" POLYMERS FOR ADVANCED TECHNOLOGIES, JOHN WILEY AND SONS, CHICHESTER, GB, vol. 8, no. 2, 1 February 1997 (1997-02-01), pages 87-92, XP000680798 ISSN: 1042-7147 cited in the application;  MORIN, LECLERC: "Synthesis of conjugated polymers derived from N-alkyl-2,7-carbazoles" MACROMOLECULES, vol. 34, no. 14, 2001, pages 4680-4682, XP002234308 cited in the application;  T. YAMATO ET AL.: "Organic reactions catalyzed by solid superacids. 1. Perfluorinated sulfonic acid resin (Nafion-H) catalyzed ring closure reaction of 2,2'-Diaminobiphenyls. A preparative route to carbazoles" J. ORG. CHEM., vol. 56, no. 21, 1991, pages 6248-50, XP002234309 cited in the application;  DATABASE CROSSFIRE BEILSTEIN [Online] Beilstein Institut zur Foerderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 1570666 XP002234311 & BAIWIR: J. MOL. STRUCT., vol. 19, 1973, page 419-429;  DATABASE CROSSFIRE BEILSTEIN [Online] Beilstein Institut zur Foerderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 4411180 XP002234313 & BHATIA; KAPIL: INDIAN J. CHEM. SECT. , vol. 23, no. 4, 1984, pages 296-299,;  DATABASE CROSSFIRE BEILSTEIN [Online] Beilstein Institut zur Foerderung der Chemischen Wissenschaften, Frankfurt am Main, DE; retrieved from XFIRE, accession no. 7023979 XP002234312 & CARR ET AL.: J. LABELLED COMPD. RADIOPHARM., vol. 34, no. 9, 1994, pages 887-898,GB2383036-B  (GEISSLER) - Polymer Advance Technology (1997), volume 8(2), pages 87-92;  (KUROKI) - Journal of Heterocyclic Chemistry (1981), volume 18(4), pages 709-714;  (MORIN) - Macromolecules (2001), volume 34(14), pages 4680-4682;  (PATRICK) - European Journal of Medicinal Chemistry (1997), volume 32(10), pages 781-793;  Indian Journal of Chemistry, 1984, 23B (4), 296-299, Bhatia et al, "Synthesis of O-methylcycloclausantitin".;  Journal of Labelled Compounds and Radiopharmaceuticals, 1994, 34 (9), 887-898, Carr et al, "A convenient method for cyanation of aromatic iodo compounds".;  Journal of Organic Chemistry, 1991, 56 (21), 6248-6250, Yamato et al, "Organic reaction conditions catalysed by solid superacids".;  Macromolecular Chemical Physics, 1997, 198 (8), 2563-2581, Dobarro et al, "Synthesis of symmetric and asymmetric carbazolyl monomers and their siloxane polymers. Effect of the 2,3,6,7,9-substitution in the carbazole unit on its mesomorphic behaviour".