title: 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.
abstract: 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 430 000 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.
authors.affiliation: Department of Chemical Engineering, Electrochemistry, Corrosion and Energetic Valorization Laboratory, A. MIRA University, Targa Ouzemmour, 06000 Bejaia, Algeria; Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria.
authors.forename: Nassima
authors.initials: N
authors.lastname: Bouguerra
authors.affiliation: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
authors.forename: Aleš
authors.initials: A
authors.lastname: Růžička
authors.affiliation: Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria.
authors.forename: Christoph
authors.initials: C
authors.lastname: Ulbricht
authors.affiliation: Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria.
authors.forename: Christina
authors.initials: C
authors.lastname: Enengl
authors.affiliation: Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria.
authors.forename: Sandra
authors.initials: S
authors.lastname: Enengl
authors.affiliation: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
authors.forename: Veronika
authors.initials: V
authors.lastname: Pokorná
authors.affiliation: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
authors.forename: Drahomír
authors.initials: D
authors.lastname: Výprachtický
authors.affiliation: Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria.
authors.forename: Elisa
authors.initials: E
authors.lastname: Tordin
authors.affiliation: Department of Chemical Engineering, Electrochemistry, Corrosion and Energetic Valorization Laboratory, A. MIRA University , Targa Ouzemmour, 06000 Bejaia, Algeria.
authors.forename: Razika
authors.initials: R
authors.lastname: Aitout
authors.affiliation: Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
authors.forename: Věra
authors.initials: V
authors.lastname: Cimrová
authors.affiliation: Linz Institute for Organic Solar Cells, Physical Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria.
authors.forename: Daniel Ayuk Mbi
authors.initials: DA
authors.lastname: Egbe