WO2007145482-A1  ANDO S. ET AL.: 'Physical properties and field-effect transistors based on novel thiazolothiazole/heterocyclic and thiazolothiazole/phenylene co-oligomers' SYNTHETIC METALS vol. 156, 02 February 2006, pages 327 - 331;  ANDO S. ET AL.: 'Physical properties and field-effect transistors based on novel thiazolothiazole/heterocyclic and thiazolothiazole/phenylene co-oligomers' SYNTHETIC METALS vol. 156, 02 February 2006, pages 327 - 331, XP0025086499;  ANDO S. ET AL.: 'Physical properties and field-effect transistors based on novel thiazolothiazoleheterocyclic and thiazolothiazolephenylene co-oligomers' SYNTHETIC METALS vol. 156, 02 February 2006, pages 327 - 331;  QIANG PENG ET AL.: 'Synthesis and Electroluminescent Properties of Copolymers Based on Fluorene and 2,5-Di(2-hexyloxyphenyl)thiazolothiazole' MACROMOLECULES vol. 38, 26 July 2005, pages 7292 - 7298;  QIANG PENG ET AL.: 'Synthesis and Electroluminescent Properties of Copolymers Based on Fluorene and 2,5-Di(2-hexyloxyphenyl)thiazolothiazole' MACROMOLECULES vol. 38, 26 July 2005, pages 7292 - 7298, XP008102921;  No relevant documents disclosed;  See also references of EP 2027187A1US8304555-B2  Ando,et al Synthetic Metals, 156 (2006) 327-331.;  Sun et al Computational Materials Science 39 (2007) 376-380.;  Osaka et al., Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) 48, p. 100 (2007).;  Shinji Ando et al.: "Synthesis, physical properties, and field-effect transistors of novel thiophene/thiazolithiazole co-oligomers" Journal of Materials Chemistry, The Royal Society of Chemistry, Cambridge, GB LNKD_DOI: 10.1039/B403699A, vol. 14, No. 12, Jun. 21, 2004, pp. 1787-1790, XP003018910 ISSN: 0959-9428.;  Qiang Peng et al.: "Synthesis and Electroluminescent Properties of Copolymers Based on Fluorene and 2,5-Di(2-hexyloxyphenyl) thiazolithiazole" Macromolecules, vol. 38, Jul. 26, 2005, pp. 7292-7298, XP008102921.EP2027187-B1  SHINJI ANDO ET AL: "Synthesis, physical properties, and field-effect transistors of novel thiophene/thiazolithiazole co-oligomers" JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB LNKD- DOI:10.1039/B403699A, vol. 14, no. 12, 21 June 2004 (2004-06-21) , pages 1787-1790, XP003018910 ISSN: 0959-9428;  QIANG PENG ET AL.: 'Synthesis and Electroluminescent Properties of Copolymers Based on Fluorene and 2,5-Di(2-hexyloxyphenyl)thiazolothiazole' MACROMOLECULES vol. 38, 26 July 2005, pages 7292 - 7298, XP008102921;  ANDO S. ET AL.: 'Physical properties and field-effect transistors based on novel thiazolothiazole/heterocyclic and thiazolothiazole/phenylene co-oligomers' SYNTHETIC METALS vol. 156, 02 February 2006, pages 327 - 331, XP0025086499