title: Gilch Synthesis of Poly(ortho-Phenylene Vinylenes): A Powerful Access to High-Molecular-Weight Blue-Emitting Polymers.
abstract: For the first time, the successful Gilch synthesis of poly(ortho-phenylene vinylenes) (ortho-PPVs) is reported. The molar mass of the constitutionally homogeneous ortho-PPVs reaches values as high as Mw ≈ 300 000 Da. The ortho-connectivity of the repeating units forces the chains to assume closely packed conformations even in good solvents. Significant perturbation of the π-electron systems and considerable shortening of the conjugation lengths are the consequences. UV-vis absorption and photoluminescence maxima consequently are shifted clearly toward shorter wavelengths compared to, e.g., classic para-PPVs.
authors.affiliation: Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 4, D-64287, Darmstadt, Germany.
authors.forename: Valentina
authors.initials: V
authors.lastname: Rittscher
authors.affiliation: Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 4, D-64287, Darmstadt, Germany.
authors.forename: Serena
authors.initials: S
authors.lastname: Kuch
authors.affiliation: Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Technische Universität Darmstadt, Alarich-Weiss-Str. 4, D-64287, Darmstadt, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Rehahn
mesh_terms: D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D008970:Molecular Weight; D010647:Phenyl Ethers / Q000737:chemistry; D058105:Polymerization; D011145:Polyvinyls / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D010647:Phenyl Ethers; D011145:Polyvinyls
keywords: Gilch synthesis; conjugated polymers; light-emitting diodes; poly(phenylene vinylenes); structure-property relations