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Article

Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene

1
Central European Institute of Technology, CEITEC BUT, Purkyňova 656/123, 61200 Brno, Czech Republic
2
Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2, 61669 Brno, Czech Republic
3
Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 77147 Olomouc, Czech Republic
4
Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, 81237 Bratislava, Slovakia
*
Author to whom correspondence should be addressed.
Academic Editor: Daniela Meroni
Molecules 2020, 25(21), 5021; https://doi.org/10.3390/molecules25215021
Received: 6 October 2020 / Revised: 26 October 2020 / Accepted: 28 October 2020 / Published: 29 October 2020
(This article belongs to the Special Issue Hybrid Materials for Advanced Applications)
Studying the properties of complex molecules on surfaces is still mostly an unexplored research area because the deposition of the metal complexes has many pitfalls. Herein, we probed the possibility to produce surface hybrids by depositing a Co(II)-based complex with chalcone ligands on chemical vapor deposition (CVD)-grown graphene by a wet-chemistry approach and by thermal sublimation under high vacuum. Samples were characterized by high-frequency electron spin resonance (HF-ESR), XPS, Raman spectroscopy, atomic force microscopy (AFM), and optical microscopy, supported with density functional theory (DFT) and complete active space self-consistent field (CASSCF)/N-electron valence second-order perturbation theory (NEVPT2) calculations. This compound’s rationale is its structure, with several aromatic rings for weak binding and possible favorable ππ stacking onto graphene. In contrast to expectations, we observed the formation of nanodroplets on graphene for a drop-cast sample and microcrystallites localized at grain boundaries and defects after thermal sublimation. View Full-Text
Keywords: graphene; cobalt complexes; hybrid material; magneto-chemistry graphene; cobalt complexes; hybrid material; magneto-chemistry
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MDPI and ACS Style

Hrubý, J.; Vavrečková, Š.; Masaryk, L.; Sojka, A.; Navarro-Giraldo, J.; Bartoš, M.; Herchel, R.; Moncol, J.; Nemec, I.; Neugebauer, P. Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene. Molecules 2020, 25, 5021. https://doi.org/10.3390/molecules25215021

AMA Style

Hrubý J, Vavrečková Š, Masaryk L, Sojka A, Navarro-Giraldo J, Bartoš M, Herchel R, Moncol J, Nemec I, Neugebauer P. Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene. Molecules. 2020; 25(21):5021. https://doi.org/10.3390/molecules25215021

Chicago/Turabian Style

Hrubý, Jakub, Šárka Vavrečková, Lukáš Masaryk, Antonín Sojka, Jorge Navarro-Giraldo, Miroslav Bartoš, Radovan Herchel, Ján Moncol, Ivan Nemec, and Petr Neugebauer. 2020. "Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene" Molecules 25, no. 21: 5021. https://doi.org/10.3390/molecules25215021

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