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Study of Thiophene Oligo-copolymers: Synthesis and Optoelectronic Properties
Krajčovič, Jozef ; Mazal,, Ctibor (referee) ; Kapička, Vratislav (referee) ; Friedl, Zdeněk (advisor)
Thesis presents synthesis and study of thiophene monomers, oligomers and polymers. The new series of thieno[3,4-b]pyrazine copolymers based on 3-dodecylthiophene and pyrazine monomers were prepared by oxidative polymerization with FeCl3. The effective synthetic method for preparation of 3-alkylthiophenes and thiophene oligomers was developed by optimizing of Kumada cross-couplig. The mentioned method could be realized for multikilos scale with possibility of transfer to pilot plant production. The second part of thesis focuses on synthesis and study of new thiophene compounds, which consist of both 2,3-diazo-1,3-butadiene bridge with two terminal chromophores and two thiophene units linked together via -position by pyrazine or hydrazine bridge. Finally, the new type of regular alternating copolymer consists of 2,2´:5´,2´´-terthiophene-5,5´-dicarboxylic acid (TEDA) and polyethyleneoxide (PEO) was prepared. Formation of polymer nano-subunits as separated phases in solid state was confirmed by TEM.
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Preparation of diketopyrrolopyrrole-based (DPP) polymers for organic electronics
Solanský, Lukáš ; Veselý, Dominik (referee) ; Cigánek, Martin (advisor)
The modern world is burdened by dependence on electricity and problems with its production. A very advantageous way to gain electricity is through photovoltaics. However, the production of silicon solar cells is demanding and expensive with a high impact on the environment. For this reason, there is an effort to switch to solar cells based on organic semiconductors. These include, for example, polymers based on diketopyrrolopyrrole (DPP). The theoretical part of this thesis deals with organic electronics, conductive polymers and DPP-based polymers, their properties and applications. It further describes the most common synthetic approaches to DPP-based polymers. The experimental part of this final work describes the preparation of intermediates necessary for the synthesis of the resulting DPP-based polymers using Stille reaction. The thiophene derivative of DPP was N,N'alkylated and subsequently brominated. Furthermore, organotin intermediates were prepared, which together with the dibrominated DPP derivative participate in the polymerization.
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Organic semoconductors and devices
Kočer, Martin ; Doc.Ing.Ota Salyk, CSc. (referee) ; Špinka, Jiří (advisor)
Introduction part of this bachelor's thesis deals about general properties of organic semiconductors, their structure and features of selected representatives. The middle section deals with some methods of application of organic semiconductors and organic devices. The final section deals about practical production of polyaniline samples and their analysis.
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Advanced materials for organic electronics and bioelectronics
Šudomová, Lucie ; Márová, Ivana (referee) ; Weiter, Martin (advisor)
This bachelor thesis focuses on the characterization of organic materials with semiconductor properties in terms of their potential use in bioelectornic applications. The theoretical part is summarizing the basic characteristics of organic materials for organic electronics and bioelectronic. There are mentioned basic structures and general properties of relevant substances. This part of the thesis also describes the basic principles of devices for bioelectronic applications and its use. Practical part includes preparation of thin films of two types substances: on the basis of low-molecular organic substances (6,13-bis(triisopropylsilylethynyl) pentacene and diketopyrrolopyrrole) and another based on polymers (Poly (3-hexylthiophene-2,5-diyl) and Poly (3,4-ethylenedioxythiophene): poly (styrene sulfonic acid) and). The first part of the experiment is focused on the characterization of the properties of used substances. The second part examines microbial biocompatibility
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Preparation of diketopyrrolopyrrole-based (DPP) polymers for organic electronics
Solanský, Lukáš ; Veselý, Dominik (referee) ; Cigánek, Martin (advisor)
The modern world is burdened by dependence on electricity and problems with its production. A very advantageous way to gain electricity is through photovoltaics. However, the production of silicon solar cells is demanding and expensive with a high impact on the environment. For this reason, there is an effort to switch to solar cells based on organic semiconductors. These include, for example, polymers based on diketopyrrolopyrrole (DPP). The theoretical part of this thesis deals with organic electronics, conductive polymers and DPP-based polymers, their properties and applications. It further describes the most common synthetic approaches to DPP-based polymers. The experimental part of this final work describes the preparation of intermediates necessary for the synthesis of the resulting DPP-based polymers using Stille reaction. The thiophene derivative of DPP was N,N'alkylated and subsequently brominated. Furthermore, organotin intermediates were prepared, which together with the dibrominated DPP derivative participate in the polymerization.
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|
|
Organic semoconductors and devices
Kočer, Martin ; Doc.Ing.Ota Salyk, CSc. (referee) ; Špinka, Jiří (advisor)
Introduction part of this bachelor's thesis deals about general properties of organic semiconductors, their structure and features of selected representatives. The middle section deals with some methods of application of organic semiconductors and organic devices. The final section deals about practical production of polyaniline samples and their analysis.
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|
|
Study of Thiophene Oligo-copolymers: Synthesis and Optoelectronic Properties
Krajčovič, Jozef ; Mazal,, Ctibor (referee) ; Kapička, Vratislav (referee) ; Friedl, Zdeněk (advisor)
Thesis presents synthesis and study of thiophene monomers, oligomers and polymers. The new series of thieno[3,4-b]pyrazine copolymers based on 3-dodecylthiophene and pyrazine monomers were prepared by oxidative polymerization with FeCl3. The effective synthetic method for preparation of 3-alkylthiophenes and thiophene oligomers was developed by optimizing of Kumada cross-couplig. The mentioned method could be realized for multikilos scale with possibility of transfer to pilot plant production. The second part of thesis focuses on synthesis and study of new thiophene compounds, which consist of both 2,3-diazo-1,3-butadiene bridge with two terminal chromophores and two thiophene units linked together via -position by pyrazine or hydrazine bridge. Finally, the new type of regular alternating copolymer consists of 2,2´:5´,2´´-terthiophene-5,5´-dicarboxylic acid (TEDA) and polyethyleneoxide (PEO) was prepared. Formation of polymer nano-subunits as separated phases in solid state was confirmed by TEM.
|
|
|
Advanced materials for organic electronics and bioelectronics
Šudomová, Lucie ; Márová, Ivana (referee) ; Weiter, Martin (advisor)
This bachelor thesis focuses on the characterization of organic materials with semiconductor properties in terms of their potential use in bioelectornic applications. The theoretical part is summarizing the basic characteristics of organic materials for organic electronics and bioelectronic. There are mentioned basic structures and general properties of relevant substances. This part of the thesis also describes the basic principles of devices for bioelectronic applications and its use. Practical part includes preparation of thin films of two types substances: on the basis of low-molecular organic substances (6,13-bis(triisopropylsilylethynyl) pentacene and diketopyrrolopyrrole) and another based on polymers (Poly (3-hexylthiophene-2,5-diyl) and Poly (3,4-ethylenedioxythiophene): poly (styrene sulfonic acid) and). The first part of the experiment is focused on the characterization of the properties of used substances. The second part examines microbial biocompatibility
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