- PHOTOCODUCTIVITY OF POLY(ARYLENEVINYLENE)S AND POLY(HETARYLENEVINYLENE)S
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The intramolecular condensation of aromatic Schiff bases leads under strong alkaline conditions to the poly(arylenevinylene)s and poly(hetarylenevinylene)s A-H.Due to the extreme stereoselectivity the resulting products are rigid, (E)-configurated polymers.The broad band gap of the unsubstituted intrinsic insulators is decreased by alkoxy substituents.Investigations of the photoconductivity and the photoreactivity, as well as of the AC-conductivity of some undoped, doped and quaternized systems are performed. - Keywords: poly(arylene vinylene), poly(hetarylene vinylene), steroeselectivity, conductivity, photoconductivity, reactivity, prepolymers
- Lang, Michael,Kretzschmann, Holger,Meier, Herbert
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- A NEW SYNTHESIS OF SLUBLE POLY(1,4-PHENYLENEVINYLENE)S AND POLY(2,5-PYRIMIDINYLENEVINYLENE)S
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Alkoxy-substituted 4-methylbenzylideneanilines 2a-f and their pyrmidine analogues 2g,h show an efficient selfcondensation in the alkaline mediumKOC(CH3)3 / DMF.The totally stereoselective reaction yields 3a-h which are transformed by acidic work-up to 4a-h.A narrow distribution of the molecular weight can be achieved.
- Kretzschmann, Holger,Meier, Herbert
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p. 5059 - 5062
(2007/10/02)
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