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Wang R, Xue L, Dong X, Yan W, Li Y. Chitosan-initiated gold nanoparticles with enhanced fluorescence for unique Fe 3+/PPi sensing and photothermal therapy. Talanta 2024; 271:125719. [PMID: 38281429 DOI: 10.1016/j.talanta.2024.125719] [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] [Received: 12/03/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 01/30/2024]
Abstract
The design of surface ligands is crucial for ligand-protected gold nanoparticles (AuNPs). Herein, following the principle of green synthesis, environmentally friendly gold nanoparticles (AuNPs@His@CC, AuHC) were fabricated based on dual ligands of histidine and carboxylated chitosan. AuHC showed the advantages of low toxicity, good photoluminescent stability and ideal biocompatibility. Compared with single histidine-coated gold nanoclusters (AuNCs@His, AuH), AuHC presented enhanced fluorescence attributed to the addition of chitosan. The blue-emitting AuHC has a unique response to Fe3+ with detection limits as low as 9.51 nM. Interestingly, the quenched fluorescence of AuHC-Fe3+ system could be restored through the introduction of PPi with a detection limit of 10.6 μM. So an "on-off-on" fluorescence sensing platform was achieved. Apart from good optical properties and sensing, the designed AuHC demonstrated outstanding photothermal conversion efficiency (27.8 %), which made it ideal material for thermal ablation of tumor. To be specific, after laser irradiation (660 nm, 0.78 W cm-2, 10 min) of AuHC, the survival rate of HeLa cells as a tumor cell model decreased to 12.7 %, indicating that AuHC has a significant tumor inhibition effect in vitro. Besides, AuHC also could be a befitting candidate for overcoming drug-resistant tumor cells such as MCF-7/ADR cells. Notably, AuHC can markedly ablate solid tumors in 4T1 tumor-bearing mice after laser irradiation (660 nm, 0.78 W cm-2, 10 min). Hence this work provides insight into the design of multifunctional AuNPs platform for simultaneously integrating the ion sensing and photothermal therapy of cancer.
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Affiliation(s)
- Ruihan Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Liuyan Xue
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Xiaorui Dong
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China
| | - Wenjun Yan
- Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, PR China
| | - Yingqi Li
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
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2
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Zelder F. "Covalent-Disassembly"-Based Approaches For Sensing Applications. Chemistry 2024; 30:e202302705. [PMID: 38179824 DOI: 10.1002/chem.202302705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
The detection of analytes with small molecular probes is crucial for the analysis and understanding of chemical, medicinal, environmental and biological situations as well as processes. Classic detection approaches rely on the concept of molecular recognition and bond formation reactions. Bond breakage reactions have been less explored in similar contexts. This concept article introduces metal-salen and metal-imine complexes as "covalent-disassembly"-based (DB)-probes for detecting polyoxophosphates, thiols, amino acids, HCN and changes in pH. It discusses the roles, importance and combinations of structurally functionalized molecular building blocks in the construction of DB-probes. Applications of optimized DB-probes for analyte detection in live cells and foodstuff are also discussed. Furthermore, the mechanism of the disassembly of a Fe(III)-salen probe upon pyrophosphate binding is presented. Extraordinary selectivity for this analyte was achieved by a multistep disassembly sequence including an unprecedented structural change of the metal complex (i. e. "induced-fit" principle). Design principles of probes for sensing applications following the "covalent-disassembly" approach are summarized, which will help improving current systems, but will also facilitate the development of new DB-probes for challenging analytic targets.
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Affiliation(s)
- F Zelder
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
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3
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Jin L, Zhao C, Wang X, Zhang Q, Jiang Y, Shen J. Metal-free auxiliary pyrophosphate detection based on near-infrared carbon dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 295:122580. [PMID: 36905739 DOI: 10.1016/j.saa.2023.122580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/22/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
The excessive use of pyrophosphate (PPi) anions as additives poses a serious threat to human health and the environment. Considering the current status of PPi probes, the development of metal-free auxiliary PPi probes has important applications. In this study, a novel near-infrared nitrogen and sulfur co-doped carbon dots (N,S-CDs) were prepared. The average particle size of N,S-CDs was 2.25 ± 0.32 nm with average height was 3.05 nm. The probe N,S-CDs showed a special response to PPi, and a good linear relationship was obtained with PPi concentrations ranging from 0 to 1 μM, with the limit of detection being 0.22 nM. Tap water and milk were used for practical inspection, and ideal experimental results were acquired. In addition, the probe N,S-CDs also showed good results in biological systems, such as cell and zebrafish experiments.
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Affiliation(s)
- Liying Jin
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, Peoples R China
| | - Chuanfeng Zhao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, Peoples R China
| | - Xiaosong Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, Peoples R China
| | - Qian Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, Peoples R China
| | - Yuliang Jiang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, Peoples R China.
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Bio-functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, Peoples R China.
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Li X, Yadav P, Spingler B, Zelder F. A Cu II -Salicylidene Glycinato Complex for the Selective Fluorometric Detection of Homocysteine over 20 Proteinogenic Amino Acids. Chemistry 2022; 11:e202200106. [PMID: 35723424 PMCID: PMC9208288 DOI: 10.1002/open.202200106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/17/2022] [Indexed: 11/23/2022]
Abstract
Homocysteine (Hcy) is a sulfur‐containing α‐amino acid that differs by one methylene (CH2) subunit from homologous cysteine (Cys). Elevated levels of Hcy are diagnostic markers of cardiovascular disease and other medical conditions. We present a new CuII‐salicylidene glycinato complex 1 for the selective fluorometric detection of Hcy in water. In the presence of this analyte, the non‐fluorescent copper‐complex demetallates and disassembles into its building blocks. This process liberates a 3‐chloro‐5‐sulfosalicylaldehyde signaling unit and is accompanied by a 51‐fold turn‐on fluorescence at 485 nm (λex=350 nm). Out of twenty proteinogenic amino acids, only histidine (12‐fold turn‐on fluorescence) and Cys (8‐fold turn‐on fluorescence) trigger some disassembly of probe 1. In comparison with important pioneering work on the detection of biothiols, this study strikingly demonstrates that structural modifications of chelate core structures steer substrate selectivity of metal‐based probes. Importantly, probe 1 has proven suitable for the detection of Hcy in artificial urine.
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Affiliation(s)
- Xuecong Li
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Prerna Yadav
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Felix Zelder
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
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Yadav P, Zelder F. Detection of glyphosate with a copper(II)-pyrocatechol violet based GlyPKit. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4354-4360. [PMID: 34570143 PMCID: PMC8498994 DOI: 10.1039/d1ay01168e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/04/2021] [Indexed: 06/13/2023]
Abstract
This paper describes the development of a test kit for the selective detection of glyphosate (GlyP). A copper(II)-pyrocatechol violet complex was selected by a screening approach from a pool of 96 combinations of metal ions and commercially available indicators and subsequently incorporated as a detection zone into a hydrophobic C18 solid support. With this kit, detection of 20 μM GlyP in tap water by the "naked eye" is possible and quantifications by smartphone analysis with a limit of detection as low as 2.66 μM (450 μg L-1) have been demonstrated in a proof-of-principle study.
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Affiliation(s)
- Prerna Yadav
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Felix Zelder
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
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6
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Yadav P, Blacque O, Roodt A, Zelder F. Induced fit activity-based sensing: a mechanistic study of pyrophosphate detection with a "flexible" Fe-salen complex. Inorg Chem Front 2021; 8:4313-4323. [PMID: 34603734 PMCID: PMC8477187 DOI: 10.1039/d1qi00209k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 05/19/2021] [Indexed: 11/25/2022]
Abstract
Activity-based sensing of biological targets is attracting increasing attention. In this work, we report detailed UV-Vis and fluorescence mechanistic studies on an Fe-salen based probe, [FeIII{salenMeCl2(SO3)2}OH2]− for pyrophosphate (PPi) detection. In the presence of PPi as an analyte, the probe disassembles into its molecular subunits and releases a fluorescent signal. Our studies illustrate that the aqua form of the complex (1-OH2) is the active species and that upon substitution of Fe-coordinated H2O and an initial end-on coordination of HP2O73−, the “trapped” pyrophosphate species switches from a monodentate to a bidentate coordination mode (i.e. linkage isomerism) via a probable equilibrium process. The elusive intermediate is further stabilized by a hydrogen bonding interaction that activates the probe for the subsequent final irreversible rate-limiting step, and allows selective discrimination between the other pyrophosphate (H2P2O72− and P2O74−) species in favour of the HP2O73−. The flexible mode of molecular recognition and binding of HP2O73− by the tetradentate probe 1-OH2 is unexpected and most effective at physiological pH, and has precedence in enzymatic catalysis (i.e. induced fit principle). These binding properties explain the previously observed outstanding selectivity of 1-OH2 for pyrophosphate over other (poly)oxophosphates and potentially competing analytes. A detailed mechanistic study of pyrophosphate (PPi) detection with a fluorometric Fe-salen based probe unravels the key structural switch of the Fe-bound PPi (“induced fit principle”) explaining the novel selectivity over other competing analytes.![]()
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Affiliation(s)
- Prerna Yadav
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland +4144 635 6803 http://www.felix-zelder.net
| | - Olivier Blacque
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland +4144 635 6803 http://www.felix-zelder.net
| | - Andreas Roodt
- Department of Chemistry, University of the Free State PO Box 339 Bloemfontein 9300 South Africa +051 4012547 http://www.ufs.ac.za/natagri/departments-and-divisions/chemistry-home/general/staff
| | - Felix Zelder
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 CH-8057 Zurich Switzerland +4144 635 6803 http://www.felix-zelder.net
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Stoerkler T, Frath D, Jacquemin D, Massue J, Ulrich G. Dual‐State Emissive π‐Extended Salicylaldehyde Fluorophores: Synthesis, Photophysical Properties and First‐Principle Calculations. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100650] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Timothée Stoerkler
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES) Equipe Chimie Organique pour la Biologie, les Matériaux et l'Optique (COMBO) UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM) 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Denis Frath
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES) Equipe Chimie Organique pour la Biologie, les Matériaux et l'Optique (COMBO) UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM) 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
- Université de Lyon, ENS de Lyon, CNRS UMR 5182 Laboratoire de Chimie 69342 Lyon France
| | | | - Julien Massue
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES) Equipe Chimie Organique pour la Biologie, les Matériaux et l'Optique (COMBO) UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM) 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Gilles Ulrich
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES) Equipe Chimie Organique pour la Biologie, les Matériaux et l'Optique (COMBO) UMR CNRS 7515, Ecole Européenne de Chimie, Polymères et Matériaux (ECPM) 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
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Celedon S, Roisnel T, Carrillo D, Ledoux-Rak I, Hamon JR, Manzur C. Transition metal(II) complexes featuring push-pull dianionic Schiff base ligands: synthesis, crystal structure, electrochemical, and NLO studies. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1827237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Salvador Celedon
- Laboratorio de Química Inorgánica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Thierry Roisnel
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, Rennes, France
| | - David Carrillo
- Laboratorio de Química Inorgánica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Isabelle Ledoux-Rak
- Laboratoire Lumière, Matière et Interfaces, ENS Paris Saclay, FRE CNRS 2036, CentraleSupelec, Gif-sur-Yvette, France
| | - Jean-Rene Hamon
- Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226, Rennes, France
| | - Carolina Manzur
- Laboratorio de Química Inorgánica, Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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