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Niu X, Zhao R, Yuan M, Liu Y, Yang X, Li H, Xu H, Wang K. Enhanced Enantioselective Discrimination Regulated by Achiral Ligands in Chiral Metal-Organic Frameworks. ACS Sens 2024; 9:4069-4078. [PMID: 39136380 DOI: 10.1021/acssensors.4c01014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2024]
Abstract
Enantioselective recognition is a fundamental property of chiral linkers in chiral metal-organic frameworks (CMOFs). However, clarifying the efficient enantioselective discrimination tailored by achiral linkers remains challenging to explain the chiral recognition mechanism and efficiency. Here, two CMOFs ([Zn2(l-Phe)2(bpa)2]n and [Zn2(l-Phe)2(bpe)2]n) with the completely different enantioselective recognition are synthesized from different nonchiral ligands and the same chiral ligands. The enantioselective recognition of CMOF is undoubtedly related to l-Phe, which differs in the hydrogen bonding to the Trp enantiomer. However, the electrochemical signals are weak and undifferentiated. [Zn2(l-Phe)2(bpe)2]n produces a flattened coplanar conformation with the -C═C- tether in the achiral ligand. The flattened achiral bpee ligand and its surrounding chiral phenylalanine molecules interact through multiple π-π stacking and hydrogen bonding, which together create a chiral sensor that facilitates the recognition of l-Trp. However, [Zn2(l-Phe)2(bpa)2]n produces a stepped conformation due to the -C-C- tether in the achiral ligand; despite the recognition effect of bpea, the recognition is unsatisfactory. Therefore, the chiral recognition of the two CMOFs stems from the synergistic effect between chiral and achiral ligands. This work shows that nonchiral ligands are also crucial in determining enantiomeric discrimination and opens up a new avenue for designing chiral materials.
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Affiliation(s)
- Xiaohui Niu
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Rui Zhao
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Mei Yuan
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Yongqi Liu
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Xing Yang
- College of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, PR China
| | - Hongxia Li
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Hui Xu
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
| | - Kunjie Wang
- College of Petrochemical Technology, Lanzhou University of Technology, 730050 Lanzhou, PR China
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Affiliation(s)
- Hai-Long Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shu-Ting Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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Chiral Selectors in Voltammetric Sensors Based on Mixed Phenylalanine/Alanine Cu(II) and Zn(II) Complexes. INORGANICS 2022. [DOI: 10.3390/inorganics10080117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A practical application composite based on mixed chelate complexes [M(S-Ala)2(H2O)n]–[M(S-Phe)2(H2O)n] (M = Cu(II), Zn(II); n = 0–1) as chiral selectors in enantioselective voltammetric sensors was suggested. The structures of the resulting complexes were studied by XRD, ESI-MS, and IR- and NMR-spectroscopy methods. It was determined that enantioselectivity depends on the metal nature and on the structure of the mixed complex. The mixed complexes, which were suggested to be chiral selectors, were stable under the experimental conditions and provided greater enantioselectivity in the determination of chiral analytes, such as naproxen and propranolol, in comparison with the amino acids they comprise. The best results shown by the mixed copper complex [Cu(S-Ala)2]–[Cu(S-Phe)2] were: ipS/ipR = 1.27 and ΔEp = 30 mV for Nap; and ipS/ipR = 1.37 and ΔEp = 20 mV for Prp. The electrochemical and analytical characteristics of the sensors and conditions of voltammogram recordings were studied by differential pulse voltammetry. Linear relationships between the anodic current and the concentrations of Nap and Prp enantiomers were achieved in the range of 2.5 × 10−5 to 1.0 × 10−3 mol L−1 for GCE/PEC-[Cu(S-Ala)2]–[Cu(S-Phe)2] and 5.0 × 10−5 to 1.0 × 10−3 for GCE/PEC–[Zn(S-Ala)2(H2O)]–[Zn(S-Phe)2(H2O)], with detection limits (3 s/m) of 0.30–1.24 μM. The suggested sensor was used to analyze Nap and Prp enantiomers in urine and plasma samples.
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Wibowo D, Malik RHA, Mustapa F, Nakai T, Maulidiyah M, Nurdin M. Highly Synergistic Sensor of Graphene Electrode Functionalized with Rutile TiO 2 Microstructure to Detect L-Tryptophan Compound. J Oleo Sci 2022; 71:759-770. [PMID: 35387917 DOI: 10.5650/jos.ess21416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Electrochemical processes are an effective method for detecting dangerous food ingredients. The synergetic between the reduction-oxidation (redox) processes inspired several papers and spurred research towards studying the new materials that can further adapt to optimize the rapid detection of chemical compounds. In this study, we report the eco-synthesis using graphene/TiO2 rutile (G/TiO2) electrode microstructures easily prepared through the physical method by mixing graphene and TiO2 powder and its application for sensing L-tryptophan (Trp) compound. The material characterization results show that the graphene surface is smoother than the G/TiO2 material. Graphene has been detected using X-ray diffraction (XRD) at a value of 2 thetas 26.39° and TiO2 forms rutile crystals (110). The FTIR spectrum exhibits the functional groups from graphene of -OH, C-H, C=C, C-O, and TiO2 identified with Ti-O bonds. The electrochemical test against G/TiO2 electrode microstructures for Trp compound shows that 0.5 g TiO2 rutile was the best composition functionalized with graphene material under 0.1M K3[Fe(CN)6] + 0.1M NaNO3 electrolyte with a scan rate of 0.1 V/s. Determination of the detection limit was obtained at 0.005 mg/L with a HorRat value of 1.05%. The stability test was carried out for 25 days, and the addition of Pb(NO3)2 as an interference compound had a significant effect on the decrease in electrode performance.
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Affiliation(s)
- Dwiprayogo Wibowo
- Department of Environmental Engineering, Faculty of Engineering, Universitas Muhammadiyah Kendari
| | - Riski Hul Akma Malik
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo
| | - Faizal Mustapa
- Doctoral student of Agriculture, Department of Water Resources, Universitas Halu Oleo
| | | | - Maulidiyah Maulidiyah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo
| | - Muhammad Nurdin
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo
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Ji J, Qu L, Wang Z, Li G, Feng W, Yang G. A facile electrochemical chiral sensor for tryptophan enantiomers based on multiwalled carbon nanotube/hydroxypropyl-β-cyclodextrin functionalized carboxymethyl cellulose. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107133] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dinu A, Apetrei C. A Review of Sensors and Biosensors Modified with Conducting Polymers and Molecularly Imprinted Polymers Used in Electrochemical Detection of Amino Acids: Phenylalanine, Tyrosine, and Tryptophan. Int J Mol Sci 2022; 23:1218. [PMID: 35163145 PMCID: PMC8835779 DOI: 10.3390/ijms23031218] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023] Open
Abstract
Recently, the studies on developing sensors and biosensors-with an obvious interdisciplinary character-have drawn the attention of many researchers specializing in various fundamental, but also complex domains such as chemistry, biochemistry, physics, biophysics, biology, bio-pharma-medicine, and bioengineering. Along these lines, the present paper is structured into three parts, and is aimed at synthesizing the most relevant studies on the construction and functioning of versatile devices, of electrochemical sensors and biosensors, respectively. The first part presents examples of the most representative scientific research focusing on the role and the importance of the phenylalanine, tyrosine, and tryptophan amino acids, selected depending on their chemical structure and their impact on the central nervous system. The second part is dedicated to presenting and exemplifying conductor polymers and molecularly imprinted polymers used as sensitive materials in achieving electrochemical sensors and biosensors. The last part of the review analyzes the sensors and biosensors developed so far to detect amino acids with the aid of conductor polymers and molecularly imprinted polymers from the point of view of the performances obtained, with emphasis on the detection methods, on the electrochemical reactions that take place upon detection, and on the electroanalytical performances. The present study was carried out with a view to highlighting, for the benefit of specialists in medicine and pharmacy, the possibility of achieving and purchasing efficient devices that might be used in the quality control of medicines, as well as in studying and monitoring diseases associated with these amino acids.
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Affiliation(s)
| | - Constantin Apetrei
- Department of Chemistry, Physics and Environment, Faculty of Sciences and Environment, “Dunărea de Jos” University of Galati, RO-800008 Galati, Romania;
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Nasraoui S, Ameur S, Al-Hamry A, Ben Ali M, Kanoun O. Development of an Efficient Voltammetric Sensor for the Monitoring of 4-Aminophenol Based on Flexible Laser Induced Graphene Electrodes Modified with MWCNT-PANI. SENSORS (BASEL, SWITZERLAND) 2022; 22:833. [PMID: 35161578 PMCID: PMC8840637 DOI: 10.3390/s22030833] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/13/2022] [Accepted: 01/19/2022] [Indexed: 02/01/2023]
Abstract
Sensitive electrodes are of a great importance for the realization of highly performant electrochemical sensors for field application. In the present work, a laser-induced carbon (LIC) electrode is proposed for 4-Aminophenol (4-AP) electrochemical sensors. The electrode is patterned on a commercial low-cost polyimide (Kapton) sheet and functionalized with a multi-walled carbon nanotubes polyaniline (MWCNT-PANI) composite, realized by an in-situ-polymerization in an acidic medium. The LIC electrode modified with MWCNT-PAPNI nanocomposite was investigated by SEM, AFM, and electrochemically in the presence of ferri-ferrocyanide [Fe(CN)6]3-/4- by cyclic voltammetry and impedance spectroscopy. The results show a significant improvement of the electron transfer rate after the electrode functionalization in the presence of the redox mediators [Fe(CN)6]3-/4-, related directly to the active surface, which itself increased by about 18.13% compared with the bare LIG. The novel electrode shows a good reproducibility and a stability for 20 cycles and more. It has a significantly enhanced electro-catalytic activity towards electrooxidation reaction of 4-AP inferring positive synergistic effects between carbon nanotubes and polyaniline PANI. The presented electrode combination LIC/MWCNT-PANI exhibits a detection limit of 0.006 μM for the determination of 4-AP at concentrations ranging from 0.1 μM to 55 μM and was successfully applied for the monitoring in real samples with good recoveries.
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Affiliation(s)
- Salem Nasraoui
- Professorship of Measurement and Sensor Technology, Chemnitz University of Technology, 09111 Chemnitz, Germany;
- Centre for Research on Microelectronics and Nanotechnology of Sousse, Tunisia and NANOMISENE Lab, LR16CRMN01, University of Sousse Sahloul, Sousse 4003, Tunisia; (S.A.); (M.B.A.)
| | - Sami Ameur
- Centre for Research on Microelectronics and Nanotechnology of Sousse, Tunisia and NANOMISENE Lab, LR16CRMN01, University of Sousse Sahloul, Sousse 4003, Tunisia; (S.A.); (M.B.A.)
- Higher Agronomic Institute of Chott-Mariem, University of Sousse, Sousse 4034, Tunisia
| | - Ammar Al-Hamry
- Professorship of Measurement and Sensor Technology, Chemnitz University of Technology, 09111 Chemnitz, Germany;
| | - Mounir Ben Ali
- Centre for Research on Microelectronics and Nanotechnology of Sousse, Tunisia and NANOMISENE Lab, LR16CRMN01, University of Sousse Sahloul, Sousse 4003, Tunisia; (S.A.); (M.B.A.)
- Higher Institute of Applied Sciences and Technology of Sousse, University of Sousse, Sousse 4003, Tunisia
| | - Olfa Kanoun
- Professorship of Measurement and Sensor Technology, Chemnitz University of Technology, 09111 Chemnitz, Germany;
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Salinas G, Arnaboldi S, Bonetti G, Cirilli R, Benincori T, Kuhn A. Hybrid light-emitting devices for the straightforward readout of chiral information. Chirality 2021; 33:875-882. [PMID: 34617330 DOI: 10.1002/chir.23370] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 11/11/2022]
Abstract
Bipolar electrochemistry has gained increasing attention in recent years as an attractive transduction concept in analytical chemistry in general and, more specifically, in the frame of chiral recognition. Herein, we use this concept of wireless electrochemistry, based on the combination of the enantioselective oxidation of a chiral probe with the emission of light from a light-emitting diode (LED), as an alternative for an easy and straightforward readout of the presence of chiral molecules in solution. A hybrid polymer-microelectronic device was designed, using an inherently chiral oligomer, that is, oligo-(3,3'-dibenzothiophene) and a polypyrrole strip as the anode and cathode of a miniaturized LED. The wireless induced redox reactions trigger light emission when the probe with the right chirality is present in solution, whereas no light emission is observed for the opposite enantiomer. The average light intensity shows a linear correlation with the analyte concentration, and the concept opens the possibility to quantify the enantiomeric excess in mixtures of the molecular antipodes.
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Affiliation(s)
- Gerardo Salinas
- Univ. Bordeaux, ISM CNRS UMR 5255, Bordeaux INP, Pessac, France
| | - Serena Arnaboldi
- Univ. Bordeaux, ISM CNRS UMR 5255, Bordeaux INP, Pessac, France.,Dip. Di Chimica, Univ. degli Studi di Milano, Milan, Italy
| | - Giorgia Bonetti
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Roberto Cirilli
- Istituto Superiore di Sanità, Centro Nazionale per il Controllo e la Valutazione dei Farmaci, Rome, Italy
| | - Tiziana Benincori
- Dip. di Scienza e Alta Tecnologia, Univ. degli Studi dell'Insubria, Como, Italy
| | - Alexander Kuhn
- Univ. Bordeaux, ISM CNRS UMR 5255, Bordeaux INP, Pessac, France
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