WO2008016091-A1  CHEM. REV. vol. 89, 1989, page 1359;  SCIENCE vol. 270, 1995, page 1789;  LI X. ET AL.: 'Synthesis and properties of novel poly(p-phenylenevinylene) copolymers for near-infrared emitting diodes' EUROPEAN POLYMER JOURNAL vol. 41, no. 12, 2005, pages 2923 - 2933, XP005105728;  LI X. ET AL: 'Synthesis and properties of novel poly(p-phenylenevinylene) copolymers for near-infrared emitting diodes' EUROPEAN POLYMER JOURNAL vol. 41, no. 12, 2005, pages 2923 - 2933, XP005105728EP2048177-A1  XUELONG ZHANG ET AL: "Highly dichroic benzo-2,1,3-thiadiazole dyes containing five linearly pi-conjugated aromatic residues, with fluorescent emission ranging from green to red, in a liquid crystal guest host system" JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB LNKD- DOI:10.1039/B512493J, vol. 16, no. 8, 28 February 2006 (2006-02-28), pages 736-740, XP008105127 ISSN: 0959-9428 [retrieved on 2005-12-02];  See also references of WO 2008016091A1US8217387-B2  Li et al, "Synthesis and properties of novel poly(p-phenylenevinylene) copolymers for near-infrared emitting diodes," European Polymer Journal, 41, 2005, pp. 2923-2933.;  Xianzhen Li, et al., European Polymer Journal, 2005, vol. 41, pp. 2923-2933.;  Xuelong Zhang, et al., "Highly dichroic benzo-2,1,3-thiadiazole dyes containing five linearly ~e-conjugated aromatic residues, with fluorescent emission ranging from green to red, in a liquid crystal guest-host system", Journal of Materials Chemistry, The Royal Society of Chemistry, Cambridge, GB, vol. 16, No. 8, Feb. 28, 2006, pp. 736-740 (XP008105127).;  Ben Liu et al., "Design and Synthesis of Bipyridyl-Containing Conjugated Polymers: Effects of polymer Rigidity on Metal Ion Sensing", Macromolecules, vol. 34, 2001, pp. 7932-7940.;  H.C. Li et al., "Synthesis and properties of alternating copolymers containing PPV and hole-transporting units for light-emitting devices", Synthetic Metals, vol. 119, 2001, pp. 149-150.;  Weiling Wang et al., "Alternating Aromatic and Tansannular Chromophores with and without Linker: Effect of Transannular n-n Interaction on the Optical Property of Dithiaparacyclophane-based Copolymers", Macromolecules, vol. 37, 2004, pp. 3546-3553.;  TziYi Wu and Yun Chen, "Synthesis and Characterization of Novel Luminescent Polymers with Alternative Phenothiazine and Divinylbenzene Units", Journal of Polymer Science: Part A: Polymer Chemistry, vol. 40, 2002, pp. 4452-4462.;  Chenggang Wang et al., "poly(3',4'-dibutyl-a-terthiophene-phenylene-vinylene): a new soluble and dopable phenylene-vinylene-based conjugated polymer", Synthetic Metals, vol. 74, 1995, pp. 71-74.EP2048177-B1  XUELONG ZHANG ET AL: "Highly dichroic benzo-2,1,3-thiadiazole dyes containing five linearly pi-conjugated aromatic residues, with fluorescent emission ranging from green to red, in a liquid crystal guest host system" JOURNAL OF MATERIALS CHEMISTRY, THE ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB LNKD- DOI:10.1039/B512493J, vol. 16, no. 8, 28 February 2006 (2006-02-28), pages 736-740, XP008105127 ISSN: 0959-9428 [retrieved on 2005-12-02];  LI X. ET AL: 'Synthesis and properties of novel poly(p-phenylenevinylene) copolymers for near-infrared emitting diodes' EUROPEAN POLYMER JOURNAL vol. 41, no. 12, 2005, pages 2923 - 2933, XP005105728