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Stanková J, Jurášek M, Hajdúch M, Džubák P. Terpenes and Terpenoids Conjugated with BODIPYs: An Overview of Biological and Chemical Properties. J Nat Prod 2024; 87:1306-1319. [PMID: 38482846 PMCID: PMC11061839 DOI: 10.1021/acs.jnatprod.3c00961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 05/03/2024]
Abstract
Advancements in small-molecule research have created the need for sensitive techniques to accurately study biological processes in living systems. Fluorescent-labeled probes have become indispensable tools, particularly those that use boron-dipyrromethene (BODIPY) dyes. Terpenes and terpenoids are organic compounds found in nature that offer diverse biological activities, and BODIPY-based probes play a crucial role in studying these compounds. Monoterpene-BODIPY conjugates have exhibited potential for staining bacterial and fungal cells. Sesquiterpene-BODIPY derivatives have been used to study sarcoplasmic/endoplasmic reticulum calcium ATPase (SERCA), indicating their potential for drug development. Owing to their unique properties, diterpenes have been investigated using BODIPY conjugates to evaluate their mechanisms of action. Triterpene-BODIPY conjugates have been synthesized for biological studies, with different spacers affecting their cytotoxicity. Fluorescent probes, inspired by terpenoid-containing vitamins, have also been developed. Derivatives of tocopherol, coenzyme Q10, and vitamin K1 can provide insights into their oxidation-reduction abilities. All these probes have diverse applications, including the study of cell membranes to investigate immune responses and antioxidant properties. Further research in this field can help better understand and use terpenes and terpenoids in various biological contexts.
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Affiliation(s)
- Jarmila Stanková
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, 77900 Olomouc, Czech Republic
| | - Michal Jurášek
- Department
of Chemistry of Natural Compounds, University
of Chemistry and Technology Prague, 16628 Prague, Czech Republic
| | - Marián Hajdúch
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, 77900 Olomouc, Czech Republic
- Laboratory
of Experimental Medicine, Institute of Molecular and Translational
Medicine, University Hospital Olomouc, 77900 Olomouc, Czech Republic
| | - Petr Džubák
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, 77900 Olomouc, Czech Republic
- Laboratory
of Experimental Medicine, Institute of Molecular and Translational
Medicine, University Hospital Olomouc, 77900 Olomouc, Czech Republic
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2
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Nevrlka F, Bědroň A, Valenta M, Tranová L, Stýskala J. Study of Direct N7 Regioselective tert-Alkylation of 6-Substituted Purines and Their Modification at Position C6 through O, S, N, and C Substituents. ACS Omega 2024; 9:17368-17378. [PMID: 38645315 PMCID: PMC11024948 DOI: 10.1021/acsomega.4c00068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/26/2024] [Accepted: 03/27/2024] [Indexed: 04/23/2024]
Abstract
A new N7 direct regioselective method allowing the introduction of tert-alkyl groups into appropriate 6-substituted purine derivatives is developed. This method is based on a reaction of N-trimethylsilylated purines with a tert-alkyl halide using SnCl4 as a catalyst. In this work, we study the structure and optimal reaction conditions leading to the N7 isomer and in some cases also to the N9 isomer. The main goal is devoted to preparing 7-(tert-butyl)-6-chloropurine as a suitable compound for other purine transformations. The stability of the tert-butyl group at the N7 position is tested for classic model reactions, leading to the preparation of new 6,7-disubstituted purine derivatives, which is also interesting from the point of view of possible biological activity.
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Affiliation(s)
- Filip Nevrlka
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Adam Bědroň
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Michal Valenta
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Lenka Tranová
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Jakub Stýskala
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
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3
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Milićević D, Hlaváč J. Novel Peptide-Based Fluorescent Probe for Simultaneous Sensing of Chymotrypsin and Hydrogen Peroxide. ACS Omega 2024; 9:17481-17490. [PMID: 38645371 PMCID: PMC11024966 DOI: 10.1021/acsomega.4c00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/20/2024] [Accepted: 03/26/2024] [Indexed: 04/23/2024]
Abstract
The developed multifunctional fluorescent probe enables the simultaneous detection of chymotrypsin as a model protease and hydrogen peroxide as a representative of reactive oxygen species (ROS) in biologically relevant concentration ranges. The chymotrypsin sensing is based on the cleavage of its selectively recognizable peptide sequence and the consequent disruption of FRET between coumarin (DEAC) and fluorescein (FL). Analogously, the presence of hydrogen peroxide causes the gradual degradation of the H2O2-labile benzopyrylium-coumarin (BC) dye. Considering the fluorescence emission responses of individual chymotrypsin-peroxide probe-attached fluorophores after their excitation at 425 nm, the sole presence of either chymotrypsin (50-1000 ng/mL) or hydrogen peroxide (10-200 μM) in a sample could be unambiguously confirmed or refuted. In addition, reliable simultaneous detection and approximate quantification of both studied species in the concentration ranges of 100-1000 ng/mL and 20-200 μM for chymotrypsin and H2O2, respectively, could be performed as well. The obtained results are summarized and visualized in the graphical models.
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Affiliation(s)
- David Milićević
- Department of Organic Chemistry,
Faculty of Science, Palacký University
Olomouc, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Jan Hlaváč
- Department of Organic Chemistry,
Faculty of Science, Palacký University
Olomouc, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
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4
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Kaleta M, Hényková E, Menšíková K, Friedecký D, Kvasnička A, Klíčová K, Koníčková D, Strnad M, Kaňovský P, Novák O. Patients with Neurodegenerative Proteinopathies Exhibit Altered Tryptophan Metabolism in the Serum and Cerebrospinal Fluid. ACS Chem Neurosci 2024; 15:582-592. [PMID: 38194490 PMCID: PMC10853934 DOI: 10.1021/acschemneuro.3c00611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/27/2023] [Accepted: 12/19/2023] [Indexed: 01/11/2024] Open
Abstract
Some pathological conditions affecting the human body can also disrupt metabolic pathways and thus alter the overall metabolic profile. Knowledge of metabolic disturbances in specific diseases could thus enable the differential diagnosis of otherwise similar conditions. This work therefore aimed to comprehensively characterize changes in tryptophan metabolism in selected neurodegenerative diseases. Levels of 18 tryptophan-related neuroactive substances were determined by high throughput and sensitive ultrahigh-performance liquid chromatography-tandem mass spectrometry in time-linked blood serum and cerebrospinal fluid samples from 100 age-matched participants belonging to five cohorts: healthy volunteers (n = 21) and patients with Lewy body disease (Parkinson's disease and dementia with Lewy bodies; n = 31), four-repeat tauopathy (progressive supranuclear palsy and corticobasal syndrome; n = 10), multiple system atrophy (n = 13), and Alzheimer's disease (n = 25). Although these conditions have different pathologies and clinical symptoms, the discovery of new biomarkers is still important. The most statistically significant differences (with p-values of ≤0.05 to ≤0.0001) between the study cohorts were observed for three tryptophan metabolites: l-kynurenine in cerebrospinal fluid and 3-hydroxy-l-kynurenine and 5-hydroxy-l-tryptophan in blood serum. This led to the discovery of distinctive correlation patterns between the profiled cerebrospinal fluid and serum metabolites that could provide a basis for the differential diagnosis of neurodegenerative tauopathies and synucleinopathies. However, further large-scale studies are needed to determine the direct involvement of these metabolites in the studied neuropathologies, their response to medication, and their potential therapeutic relevance.
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Affiliation(s)
- Michal Kaleta
- Laboratory
of Growth Regulators, Institute of Experimental
Botany of the Czech Academy of Sciences & Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Eva Hényková
- Laboratory
of Growth Regulators, Institute of Experimental
Botany of the Czech Academy of Sciences & Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Kateřina Menšíková
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - David Friedecký
- Laboratory
for Inherited Metabolic Disorders, Department of Clinical Biochemistry,
University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University Olomouc, Zdravotníků 248/7, 779 00 Olomouc, Czech Republic
| | - Aleš Kvasnička
- Laboratory
for Inherited Metabolic Disorders, Department of Clinical Biochemistry,
University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University Olomouc, Zdravotníků 248/7, 779 00 Olomouc, Czech Republic
| | - Kateřina Klíčová
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Dorota Koníčková
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Miroslav Strnad
- Laboratory
of Growth Regulators, Institute of Experimental
Botany of the Czech Academy of Sciences & Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Petr Kaňovský
- Department
of Neurology, University Hospital Olomouc, 779 00 Olomouc, Czech Republic
- Department
of Neurology, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic
| | - Ondřej Novák
- Laboratory
of Growth Regulators, Institute of Experimental
Botany of the Czech Academy of Sciences & Palacky University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
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5
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Belbasi Z, Petr J, Sevcik J, Jirovsky D, Hrbac J. Electrochemical HPLC Determination of Piperazine Antihistamine Drugs Employing a Spark-Generated Nickel Oxide Nanoparticle-Modified Carbon Fiber Microelectrode. ACS Omega 2024; 9:5038-5045. [PMID: 38313503 PMCID: PMC10831984 DOI: 10.1021/acsomega.3c09474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/02/2024] [Accepted: 01/10/2024] [Indexed: 02/06/2024]
Abstract
In this work, we demonstrate a sensitive high-performance liquid chromatography (HPLC) method for the determination of piperazine antihistamine drugs employing innovative electrochemical detection based on a spark-generated nickel oxide nanoparticle-modified carbon fiber microelectrode built into a miniaturized electrochemical detector. The direct carbon fiber-to-nickel plate electrode spark discharge, carried at 0.8 kV DC, with the nickel electrode connected to the negative pole of the high-voltage power supply, provides extremely fast (1 s) in situ tailoring of the carbon fiber microelectrode surface by nickel oxide nanoparticles. It has been found that nickel oxide nanoparticles exhibit an electrocatalytic effect toward the piperazine moiety electrooxidation process, as confirmed by voltammetric experiments, revealing the shift in the peak potential from 1.25 to 1.09 V versus Ag/AgCl. Cetirizine, cyclizine, chlorcyclizine, flunarizine, meclizine, and buclizine were selected as sample piperazine antihistamine drugs, while diclofenac served as an internal standard. The isocratic reversed-phase separation of the above set was achieved within 15 min using an ARION-CN 3 μm column with a binary mobile phase consisting of 50 mM phosphate buffer (pH 3) and methanol (45/55, v/v). The limits of detection (LOD) were within the range of 3.8-120 nM (for cyclizine and buclizine) at E = +1500 mV (vs Ag/AgCl), while the response was linear within the concentration range measured up to 5 μmol L-1. The method was successfully applied to the determination of piperazine antihistamine drugs in spiked plasma samples.
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Affiliation(s)
- Zeynab Belbasi
- Faculty
of Science, Department of Analytical Chemistry, Palacky University, 17. Iistopadu 12, 771 46 Olomouc, Czech Republic
| | - Jan Petr
- Faculty
of Science, Department of Analytical Chemistry, Palacky University, 17. Iistopadu 12, 771 46 Olomouc, Czech Republic
| | - Juraj Sevcik
- Faculty
of Science, Department of Analytical Chemistry, Palacky University, 17. Iistopadu 12, 771 46 Olomouc, Czech Republic
| | - David Jirovsky
- Faculty
of Science, Department of Analytical Chemistry, Palacky University, 17. Iistopadu 12, 771 46 Olomouc, Czech Republic
| | - Jan Hrbac
- Faculty
of Science, Department of Analytical Chemistry, Palacky University, 17. Iistopadu 12, 771 46 Olomouc, Czech Republic
- Faculty
of Science, Department of Chemistry, Masaryk
University, Kamenice 5, 625 00 Brno, Czech Republic
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6
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Kadam R, Medved’ M, Kumar S, Zaoralová D, Zoppellaro G, Bad’ura Z, Montini T, Bakandritsos A, Fonda E, Tomanec O, Otyepka M, Varma RS, Gawande MB, Fornasiero P, Zbořil R. Linear-Structure Single-Atom Gold(I) Catalyst for Dehydrogenative Coupling of Organosilanes with Alcohols. ACS Catal 2023; 13:16067-16077. [PMID: 38125981 PMCID: PMC10729017 DOI: 10.1021/acscatal.3c03937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 12/23/2023]
Abstract
A strategy for the synthesis of a gold-based single-atom catalyst (SAC) via a one-step room temperature reduction of Au(III) salt and stabilization of Au(I) ions on nitrile-functionalized graphene (cyanographene; G-CN) is described. The graphene-supported G(CN)-Au catalyst exhibits a unique linear structure of the Au(I) active sites promoting a multistep mode of action in dehydrogenative coupling of organosilanes with alcohols under mild reaction conditions as proven by advanced XPS, XAFS, XANES, and EPR techniques along with DFT calculations. The linear structure being perfectly accessible toward the reactant molecules and the cyanographene-induced charge transfer resulting in the exclusive Au(I) valence state contribute to the superior efficiency of the emerging two-dimensional SAC. The developed G(CN)-Au SAC, despite its low metal loading (ca. 0.6 wt %), appear to be the most efficient catalyst for Si-H bond activation with a turnover frequency of up to 139,494 h-1 and high selectivities, significantly overcoming all reported homogeneous gold catalysts. Moreover, it can be easily prepared in a multigram batch scale, is recyclable, and works well toward more than 40 organosilanes. This work opens the door for applications of SACs with a linear structure of the active site for advanced catalytic applications.
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Affiliation(s)
- Ravishankar
G. Kadam
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
| | - Miroslav Medved’
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- Department
of Chemistry, Faculty of Natural Sciences, Matej Bel University, Tajovského 40, Banská Bystrica 974 01, Slovak
Republic
| | - Subodh Kumar
- Department
of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, Olomouc 779 00, Czech Republic
| | - Dagmar Zaoralová
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- IT4Innovations, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Giorgio Zoppellaro
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Zdeněk Bad’ura
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Tiziano Montini
- Department
of Chemical and Pharmaceutical Sciences, Center for Energy, Environment
and Transport Giacomo Ciamiciam, INSTM Trieste Research Unit and ICCOM-CNR
Trieste Research Unit, University of Trieste
via L. Giorgieri 1, Trieste I-34127, Italy
| | - Aristides Bakandritsos
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Emiliano Fonda
- Synchrotron
SOLEIL, L’Orme des Merisiers, Saint Aubin 91190, France
| | - Ondřej Tomanec
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
| | - Michal Otyepka
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- IT4Innovations, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
| | - Rajender S. Varma
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
| | - Manoj B. Gawande
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- Department
of Industrial and Engineering, Chemistry
Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna, Maharashtra 431213, India
| | - Paolo Fornasiero
- Department
of Chemical and Pharmaceutical Sciences, Center for Energy, Environment
and Transport Giacomo Ciamiciam, INSTM Trieste Research Unit and ICCOM-CNR
Trieste Research Unit, University of Trieste
via L. Giorgieri 1, Trieste I-34127, Italy
| | - Radek Zbořil
- Regional
Centre of Advanced Technologies and Materials, Czech Advanced Technology
and Research Institute, (CATRIN), Palacký University Olomouc, Šlechtitelu° 27, Olomouc 779 00, Czech Republic
- CEET,
Nanotechnology Centre, VŠB−Technical
University of Ostrava, 17. listopadu 2172/15, Ostrava, Poruba 708 00, Czech Republic
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7
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Kotrle K, Atanasov M, Neese F, Herchel R. Theoretical Magnetic Relaxation and Spin-Phonon Coupling Study in a Series of Molecular Engineering Designed Bridged Dysprosocenium Analogues. Inorg Chem 2023; 62:17499-17509. [PMID: 37812145 PMCID: PMC10598879 DOI: 10.1021/acs.inorgchem.3c02916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Indexed: 10/10/2023]
Abstract
A detailed computational study of hypothetical sandwich dysprosium double-decker complexes, bridged by various numbers of aliphatic linkers, was performed to evaluate the effect of the structural modifications on their ground-state magnetic sublevels and assess their potential as candidates for single-molecule magnets (SMMs). The molecular structures of seven complexes were optimized using the TPSSh functional, and the electronic structure and magnetic properties were investigated using the complete active space self-consistent field method (CASSCF). Estimates of the magnetic moment blocking barrier (Ueff) and blocking temperatures (TB) are reported. In addition, a new method based on computed derivatives of effective demagnetization barriers Ueff with respect to vibrational normal modes was introduced and applied to evaluate the impact of spin-phonon coupling on the SMM properties. On the basis of the computed parameters, we have identified promising candidates with properties superior to those of the existing single-molecule magnets.
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Affiliation(s)
- Kamil Kotrle
- Department
of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc CZ-77146, Czech Republic
| | - Mihail Atanasov
- Max-Planck-Institut
für Kohlenforschung, Mülheim an der Ruhr D-45470, Germany
- Institute
of General and Inorganic Chemistry, Bulgarian
Academy of Sciences, Sofia 1113, Bulgaria
| | - Frank Neese
- Max-Planck-Institut
für Kohlenforschung, Mülheim an der Ruhr D-45470, Germany
| | - Radovan Herchel
- Department
of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc CZ-77146, Czech Republic
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8
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Nguyen TN, Thi Pham N, Ngo DH, Kumar S, Cao XT. Covalently Functionalized Graphene with Molecularly Imprinted Polymers for Selective Adsorption and Electrochemical Detection of Chloramphenicol. ACS Omega 2023; 8:25385-25391. [PMID: 37483252 PMCID: PMC10357450 DOI: 10.1021/acsomega.3c02839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 06/23/2023] [Indexed: 07/25/2023]
Abstract
In this report, we have presented a novel route to attach molecularly imprinted polymers (MIPs) on the surface of reduced graphene oxide (rGO) through covalent bonding. First, the surface of rGO was modified with maleic anhydride (MA) via a Diels-Alder reaction using a deep eutectic solvent (DES). Next, 3-propyl-1-vinylimidazolium molecular units were anchored and polymerized in the presence of ethylene glycol dimethacrylate (EGDMA) using chloramphenicol (CAP) as the template. Primarily, we investigated the effect of the molar ratio of individual precursors on the adsorption capacity of synthesized materials and accordingly fabricated the electrochemical sensor for CAP detection. Electrochemical results evidenced that the covalent bonding of MIP units enhanced the sensitivity of the respective sensor toward CAP in water as well as in real honey samples with high selectivity, stability, and reproducibility. This synthesis strategy involves the covalent binding of MIP on rGO materials via click chemisty under sonication power excluding harmful solvents and energy-intensive processes and thus could be a motivation for developing future electrochemical sensors through similar "green" routes.
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Affiliation(s)
- Thi Nhat
Thang Nguyen
- Faculty
of Chemical Engineering, Industrial University
of Ho Chi Minh City, Ho Chi
Minh City 700000, Vietnam
| | - Nam Thi Pham
- Institute
for Tropical Technology, Vietnam Academy
of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi 100000, Vietnam
| | - Dai-Hung Ngo
- Thu
Dau Mot University, Thu Dau
Mot City, Binh Duong 820000, Vietnam
| | - Subodh Kumar
- Department
of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 771 46 Olomouc, Czech Republic
| | - Xuan Thang Cao
- Faculty
of Chemical Engineering, Industrial University
of Ho Chi Minh City, Ho Chi
Minh City 700000, Vietnam
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