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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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Synthesis of advanced adamantane containing intermediates based on para-bis (2-thienyl) phenylene. Influence of intramolecular hydrogen bonds on photoisomerization
Veselý, Dominik ; Pospíšilík, Karel (referee) ; Krajčovič, Jozef (advisor)
This diploma thesis describes study and onward synthesis of advanced organic structures with potential application in the field of organic electronics and, in particular, molecular photoswitches. In the theoretical part of the thesis are closely described most commonly used conventional molecular photoswitches with special attention to the influence of the structural modifications on properties and applications of the given derivatives. Next passage is dedicated to study of donor-acceptor systems, as fundamental building blocks for synthesis of advanced derivatives. The possibilities of derivatization with a goal of improving the physicochemical properties of these compounds are also discussed. In the final chapter are proposed modern synthetic methods for preparation of novel materials for organic electronics. This section is connected with an experimental part, where are designed and consequently synthesised 4 novel imine derivatives with dodecyl and adamantyl-ethyl side chain.
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Novel organic semiconductors for bioelectronic applications
Veselý, Dominik ; Richtár, Jan (referee) ; Krajčovič, Jozef (advisor)
This bachelor’s thesis deals with a highly perspective field of bioorganic electronics. It is divided into a theoretical and an experimental part. In the theoretical part of the thesis basic device functioning principles in conjunction with living organisms and production of such devices together with their practical application are elaborated on. In the next part of the thesis conductive polymers as advanced materials for organic electronics, their synthesis, chemical modification and functionalisation, but also their use for functional electronic devices are analysed. A synthetic route for preparation of new functional organic materials by the means of modification of a basic monomer on a molecular level is proposed in the final chapter. This chapter is connected with an experimental part where a basic monomer of the most important conductive polymer for bioelectronic applications is prepared.
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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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Synthesis of advanced adamantane containing intermediates based on para-bis (2-thienyl) phenylene. Influence of intramolecular hydrogen bonds on photoisomerization
Veselý, Dominik ; Pospíšilík, Karel (referee) ; Krajčovič, Jozef (advisor)
This diploma thesis describes study and onward synthesis of advanced organic structures with potential application in the field of organic electronics and, in particular, molecular photoswitches. In the theoretical part of the thesis are closely described most commonly used conventional molecular photoswitches with special attention to the influence of the structural modifications on properties and applications of the given derivatives. Next passage is dedicated to study of donor-acceptor systems, as fundamental building blocks for synthesis of advanced derivatives. The possibilities of derivatization with a goal of improving the physicochemical properties of these compounds are also discussed. In the final chapter are proposed modern synthetic methods for preparation of novel materials for organic electronics. This section is connected with an experimental part, where are designed and consequently synthesised 4 novel imine derivatives with dodecyl and adamantyl-ethyl side chain.
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Novel organic semiconductors for bioelectronic applications
Veselý, Dominik ; Richtár, Jan (referee) ; Krajčovič, Jozef (advisor)
This bachelor’s thesis deals with a highly perspective field of bioorganic electronics. It is divided into a theoretical and an experimental part. In the theoretical part of the thesis basic device functioning principles in conjunction with living organisms and production of such devices together with their practical application are elaborated on. In the next part of the thesis conductive polymers as advanced materials for organic electronics, their synthesis, chemical modification and functionalisation, but also their use for functional electronic devices are analysed. A synthetic route for preparation of new functional organic materials by the means of modification of a basic monomer on a molecular level is proposed in the final chapter. This chapter is connected with an experimental part where a basic monomer of the most important conductive polymer for bioelectronic applications is prepared.
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Analysis of the current state of cybercrime in the EU
Veselý, Dominik ; Veber, Jaromír (advisor) ; Luc, Ladislav (referee)
My bacherols thesis on the topic Analysis of the current condition of cybernetic criminality in EU focuses in its theoretical part on the definition of the term cybercrime. This term is very comprehensive, therefore the vast majority of the paper consists of the variety of forms of cybercrime. There are talking specificaly about attacks againts personal computers and software systems, attacks, that lead up to misuse of computers, datas and other information, breaking the copyright and last, but not least using the computers againts the law. An integral part of the thesis is the current legislation, investigation of a cyber offense and the defense againts cybercrime. And interesting chapter are the trends from the years 2010 to 2016, where I mention the most interesting real-life cases of cybercrime. The main aim of the practical part of the thesis is unification of recommendations and rules concerning the defense againts cybercrime based on my obtained information and experience.
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