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synthesis of conjugated polyacetylene based polymers
Duchoslavová, Zuzana ; Zedník, Jiří (advisor) ; Doubský, Jan (referee)
Mostly new acetylene based monomers were prepared. All monomers were prepared by the means of standard spectroscopic methods. All monomers were successfully polymerized using standard metathesis TaCl5 based catalyst. Prepared polymers were characterized by the means of GPC/GPC-MALLS chromatography and standard spectral methods. Fluorescence properties of all prepared compounds were also studied: quantum fluorescence yields were determined and excitation and emission fluorescence spectra were recorded. Polymerization on modern metathesis Grubbs-Hoveyda catalytic systems of all prepared monomers was also tested. These reactions were only partially successful and only low molecular weight oligomers in mediocre yields were obtained.
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Synthesis and Spectral Properties of Novel Poly(disubstituted acetylene)s
Duchoslavová, Zuzana ; Bláha, Michal (referee)
The synthesis of new acetylenes, R1C≡CR2, (R1=4-t-butylphenyl; R2=4-[(t- butyl)(diphenyl)silyloxy]phenyl; 1-naphthyl; 2-naphthyl) is reported. All monomers were characterized by the means of standard spectroscopic methods. R1C≡CR2 give well soluble polyacetylenic polymers -[C(R1)=C(R2)]-n, in polymerization with TaCl5/SnBu4. Polymerizability increases with increasing monomer triple bond accessibility for the catalyst. The photoluminescence yield of the polymers rises in the R2 order: 1-naphthyl < 2-naphthyl < 4-[(t-butyl)(diphenyl)-silyloxy]phenyl.
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Synthesis and Spectral Properties of Novel Poly(disubstituted acetylene)s
Duchoslavová, Zuzana ; Bláha, Michal (referee)
The synthesis of new acetylenes, R1C≡CR2, (R1=4-t-butylphenyl; R2=4-[(t- butyl)(diphenyl)silyloxy]phenyl; 1-naphthyl; 2-naphthyl) is reported. All monomers were characterized by the means of standard spectroscopic methods. R1C≡CR2 give well soluble polyacetylenic polymers -[C(R1)=C(R2)]-n, in polymerization with TaCl5/SnBu4. Polymerizability increases with increasing monomer triple bond accessibility for the catalyst. The photoluminescence yield of the polymers rises in the R2 order: 1-naphthyl < 2-naphthyl < 4-[(t-butyl)(diphenyl)-silyloxy]phenyl.
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synthesis of conjugated polyacetylene based polymers
Duchoslavová, Zuzana ; Zedník, Jiří (advisor) ; Doubský, Jan (referee)
Mostly new acetylene based monomers were prepared. All monomers were prepared by the means of standard spectroscopic methods. All monomers were successfully polymerized using standard metathesis TaCl5 based catalyst. Prepared polymers were characterized by the means of GPC/GPC-MALLS chromatography and standard spectral methods. Fluorescence properties of all prepared compounds were also studied: quantum fluorescence yields were determined and excitation and emission fluorescence spectra were recorded. Polymerization on modern metathesis Grubbs-Hoveyda catalytic systems of all prepared monomers was also tested. These reactions were only partially successful and only low molecular weight oligomers in mediocre yields were obtained.
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