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Nejdl L, Petera L, Šponer J, Zemánková K, Pavelicová K, Knížek A, Adam V, Vaculovičová M, Ivanek O, Ferus M. Quantum Dots in Peroxidase-like Chemistry and Formamide-Based Hot Spring Synthesis of Nucleobases. ASTROBIOLOGY 2022; 22:541-551. [PMID: 35333585 DOI: 10.1089/ast.2021.0099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Quantum dots (QDs) are usually seen as artificial semiconductor particles exhibiting optical and electronic properties interesting for nanotechnological applications. However, they may also play a role in prebiotic chemistry. Starting from zinc acetate, cadmium acetate, and mercaptosuccinic acid, we demonstrate the formation of ZnCd QDs upon UV irradiation in prebiotic liquid formamide. We show that ZnCd QDs are able to increase the yield of RNA nucleobase synthesis from formamide up to 300 times, suggesting they might have served as universal catalysts in a primordial milieu. Based on the experimentally observed peroxidase-like activity of ZnCd QDs upon irradiation with visible light, we propose that QDs could be relevant to a broad variety of processes relating to the emergence of terrestrial life.
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Affiliation(s)
- Lukáš Nejdl
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Lukáš Petera
- J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague, Czech Republic
- Charles University in Prague, Faculty of Science, Prague, Czech Republic
| | - Judit Šponer
- Charles University in Prague, Faculty of Science, Prague, Czech Republic
| | - Kristýna Zemánková
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Kristýna Pavelicová
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Antonín Knížek
- J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague, Czech Republic
- Charles University in Prague, Faculty of Science, Prague, Czech Republic
| | - Vojtěch Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Markéta Vaculovičová
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Ondřej Ivanek
- J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Martin Ferus
- J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Prague, Czech Republic
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Nejdl L, Havlikova M, Mravec F, Vaculovic T, Faltusova V, Pavelicova K, Baron M, Kumsta M, Ondrousek V, Adam V, Vaculovicova M. UV-Induced fingerprint spectroscopy. Food Chem 2022; 368:130499. [PMID: 34496333 DOI: 10.1016/j.foodchem.2021.130499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/22/2021] [Accepted: 06/27/2021] [Indexed: 01/04/2023]
Abstract
Here, we present the potential analytical applications of photochemistry in combination with fluorescence fingerprinting. Our approach analyzes the fluorescence of samples after ultraviolet light (UV) treatment. Especially in presence of metal ions and thiol-containing compounds, the fluorescence behavior changes considerably. The UV-induced reactions (changes) are unique to a given sample composition, resulting in distinct patterns or fingerprints (typically in the 230-600 nm spectral region). This method works without the need for additional chemicals or fluorescent probes, only suitable diluent must be used. The proposed method (UV fingerprinting) suggests the option of recognizing various types of pharmaceuticals, beverages (juices and wines), and other samples within only a few minutes. In some studied samples (e.g. pharmaceuticals), significant changes in fluorescence characteristics (mainly fluorescence intensity) were observed. We believe that the fingerprinting technique can provide an innovative solution for analytical detection.
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Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ 613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Martina Havlikova
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Filip Mravec
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic
| | - Tomas Vaculovic
- Department of Chemistry, Masaryk University, Faculty of Science, Kamenice 5, 62500 Brno, Czech Republic
| | - Veronika Faltusova
- Department of Chemistry, Masaryk University, Faculty of Science, Kamenice 5, 62500 Brno, Czech Republic
| | - Kristyna Pavelicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ 613 00 Brno, Czech Republic
| | - Mojmir Baron
- Department of Viticulture and Enology, Mendel University in Brno, Lednice, Czech Republic
| | - Michal Kumsta
- Department of Viticulture and Enology, Mendel University in Brno, Lednice, Czech Republic
| | - Vit Ondrousek
- Department of Informatics, Mendel University in Brno, Zemedelska 1, CZ 613 00 Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ 613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ 613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic.
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Nejdl L, Zemankova K, Havlikova M, Buresova M, Hynek D, Xhaxhiu K, Mravec F, Matouskova M, Adam V, Ferus M, Kapus J, Vaculovicova M. UV-Induced Nanoparticles-Formation, Properties and Their Potential Role in Origin of Life. NANOMATERIALS 2020; 10:nano10081529. [PMID: 32759824 PMCID: PMC7466688 DOI: 10.3390/nano10081529] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 01/27/2023]
Abstract
Inorganic nanoparticles might have played a vital role in the transition from inorganic chemistry to self-sustaining living systems. Such transition may have been triggered or controlled by processes requiring not only versatile catalysts but also suitable reaction surfaces. Here, experimental results showing that multicolor quantum dots might have been able to participate as catalysts in several specific and nonspecific reactions, relevant to the prebiotic chemistry are demonstrated. A very fast and easy UV-induced formation of ZnCd quantum dots (QDs) with a quantum yield of up to 47% was shown to occur 5 min after UV exposure of the solution containing Zn(II) and Cd(II) in the presence of a thiol capping agent. In addition to QDs formation, xanthine activity was observed in the solution. The role of solar radiation to induce ZnCd QDs formation was replicated during a stratospheric balloon flight.
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Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Kristyna Zemankova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Martina Havlikova
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118, CZ-612 00 Brno, Czech Republic; (M.H.); (F.M.)
| | - Michaela Buresova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
| | - David Hynek
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Kledi Xhaxhiu
- Department of Chemistry, Faculty of Natural Sciences, University of Tirana, Blv. Zog I, Nr. 2/1, 1001 Tirana, Albania;
| | - Filip Mravec
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkynova 118, CZ-612 00 Brno, Czech Republic; (M.H.); (F.M.)
| | - Martina Matouskova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Martin Ferus
- J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences Dolejskova 3, CZ-182 23 Prague 8, Czech Republic;
| | - Jakub Kapus
- Slovak Organisation for Space Activities, Zamocka 5, 811 03 Bratislava, Slovakia;
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; (L.N.); (K.Z.); (M.B.); (D.H.); (M.M.); (V.A.)
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
- Correspondence: ; Tel.: +420-5-4513-3350; Fax: +420-5-4521-2044
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Fully automated process for histamine detection based on magnetic separation and fluorescence detection. Talanta 2020; 212:120789. [PMID: 32113552 DOI: 10.1016/j.talanta.2020.120789] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 01/22/2020] [Accepted: 01/27/2020] [Indexed: 12/16/2022]
Abstract
To ensure food safety and to prevent unnecessary foodborne complications this study reports fast, fully automated process for histamine determination. This method is based on magnetic separation of histamine with magnetic particles and quantification by the fluorescence intensity change of MSA modified CdSe Quantum dots. Formation of Fe2O3 particles was followed by adsorption of TiO2 on their surface. Magnetism of developed probe enabled rapid histamine isolation prior to its fluorescence detection. Quantum dots (QDs) of approx. 3 nm were prepared via facile UV irradiation. The fluorescence intensity of CdSe QDs was enhanced upon mixing with magnetically separated histamine, in concentration-dependent manner, with a detection limit of 1.6 μM. The linear calibration curve ranged between 0.07 and 4.5 mM histamine with a low LOD and LOQ of 1.6 μM and 6 μM. The detection efficiency of the method was confirmed by ion exchange chromatography. Moreover, the specificity of the sensor was evaluated and no cross-reactivity from nontarget analytes was observed. This method was successfully applied for the direct analysis of histamine in white wine providing detection limit much lower than the histamine maximum levels established by EU regulation in food samples. The recovery rate was excellent, ranging from 84 to 100% with an RSD of less than 4.0%. The main advantage of the proposed method is full automation of the analytical procedure that reduces the time and cost of the analysis, solvent consumption and sample manipulation, enabling routine analysis of large numbers of samples for histamine and highly accurate and precise results.
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Nejdl L, Hynek D, Adam V, Vaculovicova M. Capillary electrophoresis-driven synthesis of water-soluble CdTe quantum dots in nanoliter scale. NANOTECHNOLOGY 2018; 29:165602. [PMID: 29384137 DOI: 10.1088/1361-6528/aaabd4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
'Green nanotechnology' is a term used for the design of nanomaterials and processes that reduce or eliminate the use and/or generation of hazardous substances. In this paper, a capillary electrophoresis (CE)-driven synthesis of CdTe quantum dots (QDs) and their subsequent conjugation with a metal-binding protein metallothionein (isofom MT1) is reported. Even though the toxic materials (cadmium and potassium borohydride) were used for synthesis, the proposed method can be labeled as 'environmentally friendly' because the whole process (synthesis of QDs and MT1 conjugation) was carried out under mild conditions: ultra-low volume (nanoliter scale), relatively low temperature (50 °C), atmospheric pressure, and completed in a short time (under 90 s). Prepared QDs were also characterized by classical fluorescence spectroscopy and transmission electron microscopy. This study opens up new possibilities for the utilization of classical CE in the synthesis of nanoparticles and on-line labeling of biomolecules in the nanoliter scale in short period of time.
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Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czechia. Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czechia
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Nejdl L, Zelnickova J, Vaneckova T, Hynek D, Adam V, Vaculovicova M. Rapid preparation of self-assembled CdTe quantum dots used for sensing of DNA in urine. NEW J CHEM 2018. [DOI: 10.1039/c7nj05167k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this article, the authors report a systematic study of the self-assembly of CdTe quantum dots (QDs) stabilized by mercaptosuccinic acid (MSA) at laboratory temperature (25 °C) or after thermal treatment (90 °C).
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Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- CZ 613 00 Brno
- Czech Republic
- Central European Institute of Technology
| | - Jaroslava Zelnickova
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- CZ 613 00 Brno
- Czech Republic
| | - Tereza Vaneckova
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- CZ 613 00 Brno
- Czech Republic
| | - David Hynek
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- CZ 613 00 Brno
- Czech Republic
- Central European Institute of Technology
| | - Vojtech Adam
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- CZ 613 00 Brno
- Czech Republic
- Central European Institute of Technology
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry
- Mendel University in Brno
- CZ 613 00 Brno
- Czech Republic
- Central European Institute of Technology
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