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Charge Transport through Molecular Towers Based on Tetraphenyhmethane Tripods
Kolivoška, Viliam ; Šebera, Jakub ; Lindner, M. ; Valášek, M. ; Mayor, M. ; Mészáros, G. ; Gasior, Jindřich ; Hromadová, Magdaléna
Molecular platforms with multiple anchors were introduced recently to provide robusi coupling between molecular electronic components and metallic electrodes. In this work, charge transport in tower-shaped single molecule conductors based on tetraphenylmethane tripod possessing three thiol anchors is investigated by scanning tunneling microscopy break junction technique. The effect of tripod substitution pattern and number of repeating units in molecule is addressed. The substitution was found to influence conductance value in early stages of molecular junction evolution, where tower lays parallel to surface. In late stages, the charge is transported through principal molecular axis and junction breaks thermally in tilted configuration.
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Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups
Hromadová, Magdaléna ; Kolivoška, Viliam ; Šebera, Jakub ; Sebechlebská, Táňa ; Gasior, Jindřich ; Nováková Lachmanová, Štěpánka ; Mészáros, G. ; Lindner, M. ; Mayor, M. ; Valášek, M.
This work compares single molecule conductance measurements of selected organic systems containing identical oligophenylene molecular wires and different tripodal anchoring groups. Single molecule conductance G was obtained by a scanning tunneling microscopy break junction technique complemented by theoretical calculations based on the density functional theory and non-equilibrium Green’s function formalism. Two molecules were compared where the same oligophenylene wire is connected to one of the electrodes via a tripod substituted on each leg by a thiol group either in the meta or para position. By combined experimental and theoretical analysis it was possible to confirm that single molecule conductance in the metal-molecule-metal junction of both molecules corresponds to a fully extended molecular wire, which is attached to one of the electrodes by all three thiolate bonds of the tripod. Experimental results confirmed that G value of meta-connected molecules is lower than that of para, whereas junction formation probability was higher for meta functionalization.
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Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups
Hromadová, Magdaléna ; Kolivoška, Viliam ; Šebera, Jakub ; Sebechlebská, Táňa ; Gasior, Jindřich ; Nováková Lachmanová, Štěpánka ; Mészáros, G. ; Lindner, M. ; Mayor, M. ; Valášek, M.
This work compares single molecule conductance measurements of selected organic systems containing identical oligophenylene molecular wires and different tripodal anchoring groups. Single molecule conductance G was obtained by a scanning tunneling microscopy break junction technique complemented by theoretical calculations based on the density functional theory and non-equilibrium Green’s function formalism. Two molecules were compared where the same oligophenylene wire is connected to one of the electrodes via a tripod substituted on each leg by a thiol group either in the meta or para position. By combined experimental and theoretical analysis it was possible to confirm that single molecule conductance in the metal-molecule-metal junction of both molecules corresponds to a fully extended molecular wire, which is attached to one of the electrodes by all three thiolate bonds of the tripod. Experimental results confirmed that G value of meta-connected molecules is lower than that of para, whereas junction formation probability was higher for meta functionalization.
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Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups
Hromadová, Magdaléna ; Kolivoška, Viliam ; Šebera, Jakub ; Sebechlebská, Táňa ; Gasior, Jindřich ; Nováková Lachmanová, Štěpánka ; Mészáros, G. ; Lindner, M. ; Mayor, M. ; Valášek, M.
This work compares single molecule conductance measurements of selected organic systems containing identical oligophenylene molecular wires and different tripodal anchoring groups. Single molecule conductance G was obtained by a scanning tunneling microscopy break junction technique complemented by theoretical calculations based on the density functional theory and non-equilibrium Green’s function formalism. Two molecules were compared where the same oligophenylene wire is connected to one of the electrodes via a tripod substituted on each leg by a thiol group either in the meta or para position. By combined experimental and theoretical analysis it was possible to confirm that single molecule conductance in the metal-molecule-metal junction of both molecules corresponds to a fully extended molecular wire, which is attached to one of the electrodes by all three thiolate bonds of the tripod. Experimental results confirmed that G value of meta-connected molecules is lower than that of para, whereas junction formation probability was higher for meta functionalization.
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Socioeconomic passportization of immovable cultural heritage
Kouba, Vojtěch ; Lindner, Milan ; Vořechovský, Jan ; Dostál, Petr ; Pátek, Zdeněk ; Dianová, Markéta ; Titelbachová, Šárka ; Tyslová, Irena ; Straka, Michal ; Zelený, Martin ; Kubaš, Mario ; Hanzlík, Jan ; Vančurová, Alena ; Vond, Zdeněk
Předkládaná metodika je výsledkem aplikovaného výzkumu a je zaměřena na ekonomiku památek, resp. nemovitých objektů prohlášených kulturními památkami České republiky. Jejím cílem je vytvoření pasportů ekonomických hodnot pro jednotlivé památkové objekty, v případě využití metodiky orgány veřejné správy i pro soubory památek určitého druhu či soubory památek na vymezeném území.
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Investigation of Single Molecule Charge Transport Properties and Geometrical Arrangement in Terpyridine Architectures Supported by the Tetraphenylmethane Tripod
Kolivoška, Viliam ; Sebechlebská, Táňa ; Šebera, Jakub ; Gasior, Jindřich ; Lindner, M. ; Lukášek, J. ; Valášek, M. ; Mayor, M. ; Mészáros, G. ; Hromadová, Magdaléna
Tripodal platforms were engineered recently to realize a well-defined directional contact between metallic electrodes and molecular architectures dedicated to serve as working elements for electronic applications. In this work we employ cyclic voltammetry, scanning tunneling microscopy break junction technique and theoretical approaches based on the combination of density functional theory and non-equilibrium Green´s function to investigate the geometrical arrangement and single molecule charge transport in terpyridine-based architectures supported by tetraphenylmethane tripod. We demonstrate that this architecture adopts a favorable geometrical arrangement capable of forming highly conductive molecular junctions and is thus suitable to serve as a basis for working molecular switches.
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Charge Transport through Molecular Towers Based on Tetraphenylmethane Tripods
Kolivoška, V. ; Šebera, Jakub ; Lindner, M. ; Valášek, M. ; Mayor, M. ; Mészáros, G. ; Gasior, J. ; Hromadová, M.
Molecular platforms with multiple anchors were introduced recently to provide robust coupling between molecular electronic components and metallic electrodes. In this work, charge transport in tower-shaped single molecule conductors based on tetraphenylmethane tripod possessing three thiol anchors is investigated by scanning tunneling microscopy break junction technique. The effect of tripod substitution pattern and number of repeating units in molecule is addressed. The substitution was found to influence conductance value in early stages of molecular junction evolution, where tower lays parallel to surface. In late stages, the charge is transported through principal molecular axis and junction breaks thermally in tilted configuration.
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Fundraising of the non-profit cultural project of VILA Štvanice
Macháčková, Barbora ; Hucková, Barbara (advisor) ; Lindner, Milan (referee)
The work focuses on the process of creating a theatrical production under the conditions of an independent theater ensemble on a concrete case of the Prague VILLA Štvanice project. The theoretical part deals with the non-profit sector with the focus of non-governmental non-profit organization, defines the concept of fundraising and approximates the forms of theater institutions. The practical part is devoted to VILA Štvanice cultural area, specifically to its resident ensemble Tiger in Need and an example of the production of Synáčci is an analysis of its origin and the problems it has encountered. The conclusion provides assessment and possible solution of the situation.
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Analysis of selected mini-breweries in South Bohemian region as destinations for family holiday
Košatková, Michaela ; Dianová, Markéta (advisor) ; Lindner, Milan (referee)
This bachelor thesis is focused on beer tourism in the South Bohemian region and analyzes the offer of six selected mini-breweries. The main objective is to verify the hypothesis that these businesses are suitable destinations for family holiday. The first part of the work deals with theoretical knowledge and defines important terms and concepts. The second part is a practical part, it contains an overview of all beer tourism products in the South Bohemian region, situational and comparative analysis of selected breweries, and especially the results and the evaluation of the quantitative research that was carried out for the purposes of this work. The conclusions drawn from the research will help to verify the hypothesis and to suggest changes or improvements.
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Cultural aspects of stormwater management in the environment of Czech cities
Pospíšilová, Nikola ; Kouba, Vojtěch (advisor) ; Lindner, Milan (referee)
The bachelor thesis focuses on new trends in stormwater management in urbanized areas, as well as on enlightenment which successful implementation of these strategies requires. The thesis describes historical development of drainage systems and introduces the reasons for unsustainability of current state. It also analyzes the implications of stormwater management and the ways of applying this new approach in urbanized areas. It also examines if there are sufficient endeavours to spread awareness and enhance enlightenment about stormwater treatment in the Czech Republic. For this purpose, qualitative method of research was used. The aim of the research was to demonstrate opinions of experts on water management, and also of organizations focused on environmental education.
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