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Du G, Guo L, Zhou L, Pu X, Zhao D, Li H. Boosting the Luminescence of a Europium(III)-β-Diketonate Complex-Nanoclay Aqueous Solution by Acetylcholine. Inorg Chem 2024; 63:5982-5988. [PMID: 38498969 DOI: 10.1021/acs.inorgchem.4c00044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
It is a challenging task to prepare lanthanide complex-based luminescent materials with high quantum efficiency in aqueous solution, since the excited state of Ln3+ can be significantly quenched by water through the excitation of the O-H vibrations. Herein, we present a simple and environmentally friendly strategy to prepare strongly red-light-emitting lanthanide complex-based luminescent materials by loading 2-thenoyltrifluoroacetate (TTA) on the Eu3+-exchanged nanoclay (Eu3+(TTAn)-NC, NC = nanoclay) and coadsorption of choline chloride (ChCl) or acetylcholine chloride (AChCl) in water. The coadsorbed molecules remarkably boosted the luminescence of Eu3+(TTAn)-NC, which is tentatively ascribed to the removal of waters coordinated in the Eu3+ coordination sphere via the complete coordination of TTA mediated by ChCl or AChCl. Highly luminescent films were facilely prepared by mixing a Eu3+(TTAn)-NC aqueous solution with PVA-ChCl (PVA-AChCl) deep eutectic solvents. This work provides a simple and environmentally friendly way for preparing highly luminescent emitting luminescent materials in aqueous solution.
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Affiliation(s)
- Gaokuo Du
- School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, P. R. China
| | - Lei Guo
- School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, P. R. China
| | - Lixin Zhou
- School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, P. R. China
| | - Xingze Pu
- School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, P. R. China
| | - Di Zhao
- School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, P. R. China
| | - Huanrong Li
- School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, P. R. China
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2
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Guo L, Zhao D, Du G, Li H. Fluorescence turn-on mode of Eu 3+ complex nanocomposite to detect histamine for seafood freshness. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123089. [PMID: 37393671 DOI: 10.1016/j.saa.2023.123089] [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: 05/07/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/04/2023]
Abstract
Biogenic amines (BAs), which naturally occur as chemicals in seafood, are indicators of food freshness and quality. High concentrations of BAs can cause an undesirable inflammatory response. However, traditional detection methods cannot meet the needs of rapid analysis nowadays. It is essential to explore a simple and valid method to monitor the food quality. Herein, we design and prepare a nanoclay-based turn on fluorescent material with BAs response, which could be used for the real-time and visual detection of raw fish freshness. As the concentration of BAs increase, the sensor of the fluorescence signal is significantly enhanced. The sensor demonstrated wonderful response and sensitivity which showed a detection limit of 0.935 mg/L for typical BAs histamine within a linear range of 2-14 mg/L in an aqueous solution. More importantly, we developed a responsive BAs device by doping the sensor into polyvinyl alcohol (PVA), which is well applied as a rapid-responsive fluorescent marker for visual monitoring the freshness of raw fish.
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Affiliation(s)
- Lei Guo
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, PR China
| | - Di Zhao
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, PR China
| | - Gaokuo Du
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, PR China
| | - Huanrong Li
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, GuangRong Dao 8, Hongqiao District, Tianjin 300130, PR China.
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3
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Mousa M, Kim YH, Evans ND, Oreffo ROC, Dawson JI. Tracking cellular uptake, intracellular trafficking and fate of nanoclay particles in human bone marrow stromal cells. NANOSCALE 2023; 15:18457-18472. [PMID: 37941481 DOI: 10.1039/d3nr02447d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Clay nanoparticles, in particular synthetic smectites, have generated interest in the field of tissue engineering and regenerative medicine due to their utility as cross-linkers for polymers in biomaterial design and as protein release modifiers for growth factor delivery. In addition, recent studies have suggested a direct influence on the osteogenic differentiation of responsive stem and progenitor cell populations. Relatively little is known however about the mechanisms underlying nanoclay bioactivity and in particular the cellular processes involved in nanoclay-stem cell interactions. In this study we employed confocal microscopy, inductively coupled plasma mass spectrometry and transmission electron microscopy to track the interactions between clay nanoparticles and human bone marrow stromal cells (hBMSCs). In particular we studied nanoparticle cellular uptake mechanisms and uptake kinetics, intracellular trafficking pathways and the fate of endocytosed nanoclay. We found that nanoclay particles present on the cell surface as μm-sized aggregates, enter hBMSCs through clathrin-mediated endocytosis, and their uptake kinetics follow a linear increase with time during the first week of nanoclay addition. The endocytosed particles were observed within the endosomal/lysosomal compartments and we found evidence for both intracellular degradation of nanoclay and exocytosis as well as an increase in autophagosomal activity. Inhibitor studies indicated that endocytosis was required for nanoclay upregulation of alkaline phosphatase activity but a similar dependency was not observed for autophagy. This study into the nature of nanoclay-stem cell interactions, in particular the intracellular processing of nanosilicate, may provide insights into the mechanisms underlying nanoclay bioactivity and inform the successful utilisation of clay nanoparticles in biomaterial design.
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Affiliation(s)
- Mohamed Mousa
- Bone & Joint Research Group, Centre for Human Development, Stem Cells & Regeneration, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
| | - Yang-Hee Kim
- Bone & Joint Research Group, Centre for Human Development, Stem Cells & Regeneration, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
| | - Nicholas D Evans
- Bone & Joint Research Group, Centre for Human Development, Stem Cells & Regeneration, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
| | - Richard O C Oreffo
- Bone & Joint Research Group, Centre for Human Development, Stem Cells & Regeneration, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
| | - Jonathan I Dawson
- Bone & Joint Research Group, Centre for Human Development, Stem Cells & Regeneration, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK.
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Bujdák J. Controversial Issues Related to Dye Adsorption on Clay Minerals: A Critical Review. Molecules 2023; 28:6951. [PMID: 37836793 PMCID: PMC10574638 DOI: 10.3390/molecules28196951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/30/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
This critical review points out the most serious and problematic issues to be found in the literature on the adsorption of dyes on clay minerals. The introduction draws attention to the fundamental problems, namely the insufficient characterization of adsorbents, the influence of impurities on the adsorption of dyes, and the choice of inappropriate models for the description of the very complex systems that clay minerals and their systems represent. This paper discusses the main processes accompanying adsorption in colloidal systems of clay minerals. The relationship between the stability of the colloidal systems and the adsorption of dye molecules is analyzed. The usual methodological procedures for determining and evaluating the adsorption of dyes are critically reviewed. A brief overview and examples of modified clay minerals and complex systems for the adsorption of organic dyes are summarized. This review is a guide for avoiding some faults in characterizing the adsorption of organic dyes on clay minerals, to improve the procedure for determining adsorption, to evaluate results correctly, and to find an appropriate theoretical interpretation. The main message of this article is a critical analysis of the current state of the research in this field, but at the same time, it is a guide on how to avoid the most common problems and mistakes.
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Affiliation(s)
- Juraj Bujdák
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia; ; Tel.: +421-2-9014-9602
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, 845 36 Bratislava, Slovakia
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5
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Zhou C, Li H. Luminescence resonance energy transfer in hybrid materials based on terbium(iii) complex, rhodamine B and nanoclay. NEW J CHEM 2019. [DOI: 10.1039/c9nj01201j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We prepared a novel kind of luminescent hydrogel based on the combination of terbium(iii) complexes and rhodamine B dye with the LAPONITE® nanoclay.
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Affiliation(s)
- Congdi Zhou
- Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin
- China
| | - Huanrong Li
- Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin
- China
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Li J, Yang Y, Yu Y, Li Q, Tan G, Wang Y, Liu W, Pan W. LAPONITE® nanoplatform functionalized with histidine modified oligomeric hyaluronic acid as an effective vehicle for the anticancer drug methotrexate. J Mater Chem B 2018; 6:5011-5020. [DOI: 10.1039/c8tb01284a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The synthetic clay material, LAPONITE® (LAP), having a nanodisk structure together with a negatively charged surface, has been used for effective drug encapsulation by virtue of its interlayer space.
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Affiliation(s)
- Jinyu Li
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
| | - Yue Yang
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
| | - Yibin Yu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
| | - Qi Li
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
| | - Guoxin Tan
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
| | - Yuanyuan Wang
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
| | - Wei Liu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
- Henan Key Laboratory of Laser and Opto-electric Information Technology
| | - Weisan Pan
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- People's Republic of China
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Buhl M, Staniford M, Lamping S, Körsgen M, Arlinghaus HF, Kynast U, Ravoo BJ. Patterning of Nanoclays on Positively Charged Self-Assembled Monolayers via Micromolding in Capillaries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8799-8804. [PMID: 28351148 DOI: 10.1021/acs.langmuir.6b04618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanoclays are nanomaterials with versatile adsorptive properties. This contribution describes the generation of micropatterns of a nanoclay ("laponite") on ammonium-terminated, self-assembled monolayers (SAMs) on glass and silicon. Microstructured immobilization of the laponite was performed using micromolding in capillaries (MIMIC). The immobilization was verified using contact angle goniometry, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and fluorescence microscopy. Furthermore, laponite was modified with Nile red to generate a fluorescence enhancement-based surface sensor for the vitamin choline.
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Affiliation(s)
- Moritz Buhl
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
| | - Mark Staniford
- Institute for Optical Technologies, Münster University of Applied Sciences , Stegerwaldsstrasse 39, 48565 Steinfurt, Germany
| | - Sebastian Lamping
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
| | - Martin Körsgen
- Physics Institute, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Heinrich F Arlinghaus
- Physics Institute, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Straße 10, 48149 Münster, Germany
| | - Ulrich Kynast
- Institute for Optical Technologies, Münster University of Applied Sciences , Stegerwaldsstrasse 39, 48565 Steinfurt, Germany
| | - Bart Jan Ravoo
- Organic Chemistry Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany
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8
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Ley C, Brendlé J, Miranda M, Allonas X. Spectroscopic Studies of the Interactions between a Cationic Cyanine Dye and a Synthetic Phyllosilicate: From Photophysics to Hybrid Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:6812-6818. [PMID: 28602081 DOI: 10.1021/acs.langmuir.7b01330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The interaction of the cationic organic dye Astrazon orange R (AO-R) with the synthetic phyllosilicate Laponite leads to very interesting hybrid materials. Indeed, the Laponite nanoparticles modify the photophysical properties of AO-R, inducing a stabilization of its excited emissive state by preventing ultrafast isomerization. The long-lived emissive clay-dye hybrid complex can be used to develop efficient photoinitiating systems, leading to organic-inorganic hybrid crosslinked polymer materials.
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Affiliation(s)
- Christian Ley
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires and ‡Institut de Science des Matériaux de Mulhouse, CNRS-UMR7361, Université de Haute-Alsace , 3b rue Alfred Werner, 68093 Mulhouse Cedex, France
| | - Jocelyne Brendlé
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires and ‡Institut de Science des Matériaux de Mulhouse, CNRS-UMR7361, Université de Haute-Alsace , 3b rue Alfred Werner, 68093 Mulhouse Cedex, France
| | - Moise Miranda
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires and ‡Institut de Science des Matériaux de Mulhouse, CNRS-UMR7361, Université de Haute-Alsace , 3b rue Alfred Werner, 68093 Mulhouse Cedex, France
| | - Xavier Allonas
- Laboratoire de Photochimie et d'Ingénierie Macromoléculaires and ‡Institut de Science des Matériaux de Mulhouse, CNRS-UMR7361, Université de Haute-Alsace , 3b rue Alfred Werner, 68093 Mulhouse Cedex, France
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9
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Felbeck T, Moss S, Botas AMP, Lezhnina MM, Ferreira RAS, Carlos LD, Kynast UH. Monitoring of nanoclay-protein adsorption isotherms via fluorescence techniques. Colloids Surf B Biointerfaces 2017. [PMID: 28623694 DOI: 10.1016/j.colsurfb.2017.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The investigation of nanoparticles and their interaction with bio-macromolecules have become an important issue; the widely discussed protein corona around nanoparticles and their biological fate in general have drawn particular attention. Here, we focus on nanoclay dispersions and the use of solvatochromic fluorescent dyes (Dansyl and Coumarin 153) for monitoring the interaction with two model proteins, bovine serum albumin and β-lactoglobulin. On one hand, these dyes are poorly emissive in water, but experience a boost in their fluorescence when adsorbed into the hydrophobic domains of proteins. On the other hand, (nano)clays and clay minerals have previously been investigated in terms of their individual protein adsorption isotherms and their usefulness for the solubilization of water-insoluble dyes into an aqueous environment. In the following, we have combined all three individual parts (nanoclay, fluorophore and protein) in dispersions in a wide range of concentration ratios to systematically study the various adsorption processes via fluorescence techniques. In order to clarify the extent of dye diffusion and adsorption-desorption equilibria in the investigations, nanoclay hybrids with an adsorbed dye (Coumarin 153) and a covalently conjugated dye (Dansyl) were compared. The results suggest that the fluorescence progression of protein titration curves correlate with the amount of protein adsorbed, matching their reported adsorption isotherms on hectorite clays. Furthermore, experimental data on the protein monolayer formation around the nanoclays could be extracted due to only minor alterations of the dispersions' optical quality and transparency. In this manner, a fluorescence-based monitor for the formation of the globular protein layer around the nanoclay was realized.
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Affiliation(s)
- Tom Felbeck
- Münster University of Applied Sciences, Institute for Optical Technologies, Stegerwaldstr. 39, 48565 Steinfurt, Germany; Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Sebastian Moss
- Münster University of Applied Sciences, Institute for Optical Technologies, Stegerwaldstr. 39, 48565 Steinfurt, Germany
| | - Alexandre M P Botas
- Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Marina M Lezhnina
- Münster University of Applied Sciences, Institute for Optical Technologies, Stegerwaldstr. 39, 48565 Steinfurt, Germany
| | - Rute A S Ferreira
- Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Luís D Carlos
- Department of Physics and CICECO - Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ulrich H Kynast
- Münster University of Applied Sciences, Institute for Optical Technologies, Stegerwaldstr. 39, 48565 Steinfurt, Germany.
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10
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Chen X, Wang Y, Chai R, Xu Y, Li H, Liu B. Luminescent Lanthanide-Based Organic/Inorganic Hybrid Materials for Discrimination of Glutathione in Solution and within Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2017; 9:13554-13563. [PMID: 28350157 DOI: 10.1021/acsami.7b02679] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Glutathione (GSH) as a biothiol is an essential peptide related to various diseases. Although multiple strategies for biothiols detection have been developed, there is increasing demand for sensors that can differentiate GSH from cysteine (Cys) and homocysteine (Hcy), owing to the similar structures and thiol groups in these amino acids. Herein, we report a novel Eu3+/LAPONITE (Lap)-based organic/inorganic hybrid material for selective detection of GSH via an "off-on" process. The fluorescence of Eu(DPA)3@Lap-Tris can be quenched by Cu2+ through photoinduced electron transfer (PET). The addition of GSH into the Eu(DPA)3@Lap-Tris/Cu2+ system induces the removal of Cu2+ from Eu(DPA)3@Lap-Tris and blocks PET, resulting in the recovery of fluorescence. This proposed assay demonstrates higher selectivity toward GSH than Cys and Hcy, and showed a detection limit of 162 nM within a linear range of 0.5-30 μM. Unlike other GSH selective sensors, this platform could be formed into a hydrogel while its sensitivity was maintained. The sensitive response to GSH in serum samples makes this platform an efficient tool for biological applications because of its ease of preparation, high selectivity, good biocompatibility, and low toxicity.
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Affiliation(s)
- Xi Chen
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China
| | - Yuru Wang
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China
| | - Ran Chai
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China
| | - Yang Xu
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China
| | - Huanrong Li
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China
| | - Binyuan Liu
- School of Chemical Engineering and Technology, Hebei University of Technology , Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China
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12
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Grabolle M, Starke M, Resch-Genger U. Highly Fluorescent dye-nanoclay Hybrid Materials Made from Different Dye Classes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3506-13. [PMID: 27007448 DOI: 10.1021/acs.langmuir.5b04297] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Nanoclays like laponites, which are commercially avaible in large quantities for a very moderate price, provide a facile solubilization strategy for hydrophobic dyes without the need for chemical functionalization and can act as a carrier for a high number of dye molecules. This does not require reactive dyes, amplifies fluorescence signals from individual emitters due to the high number of dyes molecules per laponite disk, and renders hydrophobic emitters applicable in aqueous environments. Aiming at the rational design of bright dye-loaded nanoclays as a new class of fluorescent reporters for bioanalysis and material sciences and the identification of dye structure-property relationships, we screened a series of commercial fluorescent dyes, differing in dye class, charge, and character of the optical transitions involved, and studied the changes of their optical properties caused by clay adsorption at different dye loading concentrations. Upon the basis of our dye loading density-dependent absorption and fluorescence measurements with S2105 and Lumogen F Yellow 083, we could identify two promising dye-nanoclay hybrid materials that reveal high fluorescence quantum yields of the nanoclay-adsorbed dyes of at least 0.20 and low dye self-quenching even at high dye-loading densities of up to 50 dye molecules per laponite platelet.
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Affiliation(s)
- Markus Grabolle
- Federal Institute for Materials Research and Testing (BAM) , Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany
| | - Marian Starke
- Physical Chemistry, Freie Universität Berlin , Takustrasse 3, 14195 Berlin, Germany
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM) , Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany
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13
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Staniford MC, Lezhnina MM, Gruener M, Stegemann L, Kuczius R, Bleicher V, Strassert CA, Kynast UH. Photophysical efficiency-boost of aqueous aluminium phthalocyanine by hybrid formation with nano-clays. Chem Commun (Camb) 2015. [DOI: 10.1039/c5cc05352h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Aluminium phthalocyanines, solubilized by nano-clay shuttles, retain high fluorescence efficiencies and singlet oxygen generation capabilities in aqueous ambience, qualifying them for photodynamic therapies.
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Affiliation(s)
- Mark C. Staniford
- Münster University of Applied Sciences
- Institute for Optical Technologies
- 48565 Steinfurt
- Germany
| | - Marina M. Lezhnina
- Münster University of Applied Sciences
- Institute for Optical Technologies
- 48565 Steinfurt
- Germany
| | - Malte Gruener
- Westfälische Wilhelms-Universität Münster
- Institute of Physics – Center for Nanotechnology
- 48149 Münster
- Germany
| | - Linda Stegemann
- Westfälische Wilhelms-Universität Münster
- Institute of Physics – Center for Nanotechnology
- 48149 Münster
- Germany
| | - Rauni Kuczius
- Mikrobiologisches Labor Dr. Michael Lohmeyer GmbH
- Technologiehof Münster
- 48149 Münster
- Germany
| | - Vera Bleicher
- Mikrobiologisches Labor Dr. Michael Lohmeyer GmbH
- Technologiehof Münster
- 48149 Münster
- Germany
| | - Cristian A. Strassert
- Westfälische Wilhelms-Universität Münster
- Institute of Physics – Center for Nanotechnology
- 48149 Münster
- Germany
| | - Ulrich H. Kynast
- Münster University of Applied Sciences
- Institute for Optical Technologies
- 48565 Steinfurt
- Germany
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