Počet záznamů: 1  

Synthesis and photophysical and electroluminescent properties of poly(1,4-phenylene–ethynylene)-alt-poly(1,4-phenylene–vinylene)s with various dissymmetric substitution of alkoxy side chains

  1. 1.
    0455639 - UMCH-V 2016 RIV US eng J - Článek v odborném periodiku
    Bouguerra, N. - Růžička, Aleš - Ulbricht, C. - Enengl, C. - Enengl, S. - Pokorná, Veronika - Výprachtický, Drahomír - Tordin, E. - Aitout, R. - Cimrová, Věra - Egbe, D. A. M.
    Synthesis and photophysical and electroluminescent properties of poly(1,4-phenylene–ethynylene)-alt-poly(1,4-phenylene–vinylene)s with various dissymmetric substitution of alkoxy side chains.
    Macromolecules. Roč. 49, č. 2 (2016), s. 455-464. ISSN 0024-9297
    Grant CEP: GA ČR(CZ) GA13-26542S; GA ČR(CZ) GAP106/12/0827
    Institucionální podpora: RVO:61389013
    Klíčová slova: poly(1,4-phenylene-ethynylene)-alt-poly(1,4-phenylene-vinylene)s * dissymmetric side chains * synthesis
    Kód oboru RIV: CD - Makromolekulární chemie
    Impakt faktor: 5.835, rok: 2016

    The synthesis and characterization of a set of conjugated polymers, poly(1,4-phenylene–ethynylene)-alt-poly(1,4-phenylene–vinylene)s (PPE–PPVs), with a dissymmetrical configuration (partial or total) of alkoxy side chains is reported. Five new polymers bearing octyloxy and/or octadecyloxy side chains at the phenylene–ethynylene and phenylene–vinylene segments, respectively, were obtained. Two symmetrical substituted polymers were used for comparison. Polymers with weight-average molecular weight, Mw, up to 430000 g/mol and degree of polymerization between 17 and 322 were obtained by a Horner–Wadsworth–Emmons olefination polycondensation reaction of the respective luminophoric dialdehydes and bisphosphonates. As expected, identical conjugated backbones in all polymers results in very similar photophysical response in dilute solution, with high fluorescence quantum yields between 50% and 80%. In contrast, the thin film properties are dependent on the combinatorial effects of side chain configuration, molecular weight, and film thickness parameters, which are the basis of the resulting comparison and discussion.
    Trvalý link: http://hdl.handle.net/11104/0256303