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Your search keyword '"Bastl, Zdenek"' showing total 114 results
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114 results on '"Bastl, Zdenek"'

1. EDOT polymerization at photolithographically patterned functionalized graphene

Author

Kovaříček, Petr, Drogowska, Karolina, Melníková, Zuzana Komínková, Blechta, Václav, Bastl, Zdeněk, Gromadzki, Daniel, Fridrichová, Michaela, and Kalbáč, Martin

Subjects
Physics - Applied Physics, Condensed Matter - Materials Science
Abstract

Graphene possesses unique features that make it attractive for nanotechnology. Functional devices often require combination of several materials with specific functions, and graphene-polymer composites are one of them. Herein, we report on the preparation of PEDOT:Graphene bilayers by in situ polymerization of EDOT on covalently functionalized graphene. The polymerization proceeds exclusively on the grafted graphene, and patterned structures with high spatial resolution down to 3 {\mu}m could have been prepared. The composite exhibits enhanced efficiency of electrochemical doping compared to pristine graphene, unsymmetrical transport characteristic with very good hole-transporting properties and efficient electronic communication between the two materials.

Published
2021
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2. Extended characterization methods for covalent functionalization of graphene on copper

Author

Kovaříček, Petr, Vrkoslav, Vladimír, Plšek, Jan, Bastl, Zdeněk, Fridrichová, Michaela, Drogowska, Karolina, and Kalbáč, Martin

Subjects
Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter
Abstract

Graphene is a material of great potential in a broad range of applications, for each of which specific tuning of the materials properties is required. This can be achieved, for example, by covalent functionalization. We have exploited two protocols for surface grafting, either by diazonium salts or by nucleophilic exchange, to perform graphene covalent modification directly on a copper substrate, which is routinely used for the synthesis of the material, and investigated the difference in reactivity compared with other substrates. The successful functionalization was confirmed by Raman and surface-enhanced Raman spectroscopy, mass spectrometry, X-ray photoelectron spectroscopy and scanning electron microscopy with energy-dispersive X-ray spectroscopy. In addition, we have found that the copper substrate can serve as a plasmonic surface enhancing the Raman spectra. Furthermore, the covalent grafting was shown to tolerate the transfer process, thus allowing ex post transfer from copper to other substrates. This protocol avoids wet processing and enables an all-gas-phase transformation of functionalized graphene, which eliminates the main sources of contamination.

Published
2021
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4. Influence of Terminal Carboxyl Groups on the Structure and Reactivity of Functionalized m-Carboranethiolate Self-Assembled Monolayers

Author

Goronzy, Dominic P, Stanek, Jan, Avery, Erin, Guo, Han, Bastl, Zdenek, Dusek, Michal, Gallup, Nathan M, Gun, Saliha, Kucerakova, Monika, Levandowski, Brian J, Machacek, Jan, Sicha, Vaclav, Thomas, John C, Yavuz, Adem, Houk, KN, Danisman, Mehmet Fatih, Mete, Ersen, Alexandrova, Anastassia N, Base, Tomas, and Weiss, Paul S

Subjects
Chemical Sciences, Engineering, Materials
Published
2020

31. ArF laser-induced chemical vapor deposition of polythiene films from carbon disulfide

Author

Tomovska, Radmila, Bastl, Zdenek, Vorlicek, Vladimir, Vacek, Karel, Subrt, Jan, Plzak, Zbynek, and Pola, Josef

Subjects
Addition polymerization -- Research, Polymerization -- Research, Carbon compounds -- Structure, Carbon compounds -- Research, Carbon compounds -- Mechanical properties, Chemistry, Physical and theoretical -- Research, Chemicals, plastics and rubber industries
Abstract

The proposed polymerization mechanism of carbon sulfide is explained. Physical properties of the C/S polymeric materials are discussed.

Published
2003

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