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dc.contributor.authorVANDENBERGH, Joke-
dc.contributor.authorVAN SEVEREN, Ineke-
dc.contributor.authorLUTSEN, Laurence-
dc.contributor.authorADRIAENSENS, Peter-
dc.contributor.authorBolink, Henk J.-
dc.contributor.authorCLEIJ, Thomas-
dc.contributor.authorVANDERZANDE, Dirk-
dc.identifier.citationPOLYMER CHEMISTRY, 2(6). p. 1279-1286-
dc.description.abstractTwo first examples of highly soluble tetra-alkoxy substituted PPV derivatives, poly(2,3,5,6-tetrahexyloxy-1,4-phenylene vinylene) (TH-PPV) and poly[2,3,5,6-tetra(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] TEH-PPV, are presented. Both polymers have been fully characterized and the solubility and UV-Vis absorption characteristics have been studied in various organic solvents. Due to the symmetric nature of the repeating unit, TH-PPV and TEH-PPV have an inherently regioregular nature, which is unusual for PPV-type polymers. Observations from polarized light microscopy and differential scanning calorimetry indicate that TH-PPV exhibits thermally induced order resulting in a liquid crystalline mesophase. In contrast, due to steric hindrance of the branched alkyl side chains, TEH-PPV is rather disordered. As a first demonstration of the charge transporting properties of TH-PPV, a simple solution processed electroluminescent device has been prepared. The electroluminescence spectrum shows a detailed structure similar to that observed from the solid-state photoluminescence spectrum and shows one of the highest energy emissions observed for PPVs. It is speculated that the enhanced order in TH-PPV will benefit the usage of this new class of polymers in optoelectronic applications, in which the improved charge carrier mobility is desirable.-
dc.description.sponsorshipThe authors thank H. Penxten for the PL and PLE measurements and Sonsoles Garcia Santamaria for the careful device preparation. The authors gratefully acknowledge the Fund for Scientific Research (FWO) for granting a PhD fellowship (I. V. S. and J.V.) and for the funding of the project G.0091.07, the Institute for the promotion of Innovation by Science and Technology in Flanders (IWT, SBO-project "Polyspec" IWT-060843), the Spanish Ministry of Science and Innovation (MICINN) and CSD2007-00010) and the Generalitat Valenciana. Furthermore, this work is a part of the European Science Foundation EUROCORES Program SONS II (CRP no. 05-SONS-FP-021 "SOHYDs") that is supported by funds from the FWO (G.068506), and by MICINN (MAT2006-28185-E) and the EC Sixth Framework Program, under Contract no. ERAS-CT-2003-980409.-
dc.titleTetra-alkoxy substituted PPV derivatives: a new class of highly soluble liquid crystalline conjugated polymers-
dc.typeJournal Contribution-
dc.description.notes[Vandenbergh, Joke; Van Severen, Ineke; Adriaensens, Peter; Cleij, Thomas J.; Vanderzande, Dirk] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Lutsen, Laurence; Vanderzande, Dirk] IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium. [Bolink, Henk J.] Univ Valencia, Inst Ciencia Mol ICMol, Valencia 46071, Spain.
item.fullcitationVANDENBERGH, Joke; VAN SEVEREN, Ineke; LUTSEN, Laurence; ADRIAENSENS, Peter; Bolink, Henk J.; CLEIJ, Thomas & VANDERZANDE, Dirk (2011) Tetra-alkoxy substituted PPV derivatives: a new class of highly soluble liquid crystalline conjugated polymers. In: POLYMER CHEMISTRY, 2(6). p. 1279-1286.-
item.fulltextNo Fulltext-
item.accessRightsClosed Access-
item.validationecoom 2012-
item.contributorBolink, Henk J.-
item.contributorLUTSEN, Laurence-
item.contributorVANDERZANDE, Dirk-
item.contributorCLEIJ, Thomas-
item.contributorADRIAENSENS, Peter-
item.contributorVAN SEVEREN, Ineke-
item.contributorVANDENBERGH, Joke-
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