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Li W, Liu F, He Y, Song G. A ratiometric fluorescent sensor based on S-doped BCNO quantum dots and Au nanoclusters combined with 3D-printing portable device for the detection of malachite green. Mikrochim Acta 2024; 191:394. [PMID: 38877187 DOI: 10.1007/s00604-024-06465-3] [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: 04/23/2024] [Accepted: 05/25/2024] [Indexed: 06/16/2024]
Abstract
Sulfur-doped BCNO quantum dots (S-BCNO QDs) emitting green fluorescence were prepared by elemental doping method. The ratiometric fluorescence probe with dual emissions was simply established by mixed S-BCNO QDs with gold nanoclusters (GSH-Au NCs). Because the emission spectrum of Au NCs (donor) at 615 nm overlapped well with the ultraviolet absorption of malachite green (MG), fluorescence resonance energy transfer (FRET) can be achieved. When the concentration of MG increased, the fluorescence intensity (F495) of S-BCNO QDs decreased slowly, while the fluorescence intensity (F615) of Au NCs decreased sharply. The fluorescence intensity ratio of F615/F495 decreased with the increase of MG. By plotting the F615/F495 values against MG concentration, a sensitive and rapid detection of MG was possible with a wide detection range (0.1-50 µM) and a low detection limit of 10 nM. Due to the accompanying fluorescence color change from pink to blue-green, it can be used for visual detection. A three dimensional-printing device utilizing digital image colorimetry to capture color changes through the built-in camera, enables quantitative detection of MG with a good linearity between the values of red/green ratio and MG concentrations at the range 1-50 µM. This sensing platform had a range of advantages, including high cost-effectiveness, portability, ease of operation, and high sensitivity. Furthermore, the sensing platform was successfully applied to the detection of MG in real water sample and fish samples, thereby verifying the reliability and effectiveness of this sensing platform in water quality monitoring and food safety.
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Affiliation(s)
- Wenhao Li
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Fang Liu
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Yu He
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China.
| | - Gongwu Song
- Ministry of Education, Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei Province Key Laboratory for Precision Manufacturing of Small Molecular Active Pharmaceutical Ingredients, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
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2
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Excitation-dependent ratiometric fluorescence response to mercury ion based on single hexagonal boron nitride quantum dots. Anal Chim Acta 2022; 1236:340585. [DOI: 10.1016/j.aca.2022.340585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/23/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022]
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3
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Yuan S, Liu C, Chen L, Wen L, Liu Y. In‐situ Synthesis of CsPbBr
3
Nanocrystals/Polyvinyl Pyrrolidone Ethanol Sol and High Resolution Fingerprint Identification. ChemistrySelect 2022. [DOI: 10.1002/slct.202201880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shuanglong Yuan
- School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Chuanqi Liu
- School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Long Chen
- School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Liangjie Wen
- School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Yanan Liu
- School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
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4
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Jing H, Ouyang H, Li W, Long Y. Molten salt synthesis of BCNO nanosheets for the electrochemical detection of clenbuterol. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Boron carbon oxynitride quantum dots-based ratio fluorescent nanoprobe assisted with smartphone for visualization detection of phosphate. Mikrochim Acta 2022; 189:238. [PMID: 35639179 DOI: 10.1007/s00604-022-05331-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/08/2022] [Indexed: 01/07/2023]
Abstract
A ratio fluorescence nanoprobe was constructed by simple mixing BCNO QDs with 8-hydroxyquinoline-5-sulfonic acid (HQSA), which had an obvious fluorescence peak at 420 nm and a weak fluorescence peak at 500 nm, corresponding to the BCNO QDs and HQSA, respectively. This fluorescence probe takes stable fluorescence of BCNO QDs as an internal standard, based on HQSA chelating enhanced fluorescence and specificity of phosphate in the presence of Mg2+, which realizes a rapid and sensitive detection of phosphate with good linearity in the range 0.3-50 μM and 50-100 μM and a detection limit of 0.073 μM. The recovery is between 94.1 and 111% and the relative standard deviations (RSDs) below 10%. At the same time, we took color photos of the reaction solution under 310-nm UV lamp with smartphones for visual detection through RGB data image analysis, which make the detection easier and faster. The proposed method provides a new strategy for the intelligent online detection of other targets in complex environment samples.
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Liu F, Wang M, He Y, Song G, Zhao J. Smartphone-assisted ratiometric fluorescence sensing platform for the detection of doxycycline based on BCNO QDs and calcium ion. Mikrochim Acta 2022; 189:113. [PMID: 35190913 DOI: 10.1007/s00604-022-05224-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 02/09/2022] [Indexed: 10/19/2022]
Abstract
A novel colorimetric and ratiometric fluorescence sensor has been established based on boron carbon oxynitride quantum dots (BCNO QDs) and Ca2+ for the detection of doxycycline (DOX). BCNO QDs were synthesized by microwave-assisted method with boric acid and ethylenediamine. The fluorescence of BCNO QDs at 425 nm was quenched due to the electrostatic interaction and inner filter effect with doxycycline. Meanwhile, doxycycline was combined with Ca2+ to form a fluorescence complex, which generated a new fluorescence peak at 520 nm. The fluorescence intensity ratio (F520/F425) has a good linear relationship with doxycycline concentration, and the detection limit is 25 nM. Moreover, the fluorescence of the reaction solution showed a concentration-dependent visual color change from blue to green. In order to facilitate further application, a portable fluorescent test paper which is easy to store was prepared. The RGB values of the reaction solution and corresponding test paper were identified by smartphone, and the visual detection of doxycycline was performed by digital image colorimetric analysis. The application of smartphone and fluorescent test paper can effectively shorten the detection time and simplified the operation, providing an effective scheme for quantitative detection of doxycycline in actual samples. Overall, this work provides a method for the detection of doxycycline and shows that the BCNO QDs have great potential application in food safety.
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Affiliation(s)
- Fang Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Manman Wang
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Yu He
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China.
| | - Gongwu Song
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Junjian Zhao
- Department of Clinical Laboratory, North China University of Science and Technology Affiliated Hospital, Tangshan, 063000, Hebei, China
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7
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Dinake P, Phokedi GN, Mokgadi J, Ntshekisang A, Botlhomilwe MA, Kelebemang R, Motswetla O, Present B. A Facile Microwave-Assisted Green Synthetic Approach of Solid-State Fluorescent Carbon-Dot Nanopowders Derived from Biowaste for Potential Latent-Fingerprint Enhancement. INTERNATIONAL JOURNAL OF NANOSCIENCE 2022. [DOI: 10.1142/s0219581x21500514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Latent fingerprint detection and visualization remains a challenge especially where problems of poor contrast, auto-fluorescent surfaces and patterned backgrounds are encountered. As a result there is an increasing interest in the development of simple, cost effective, rapid and yet accurate methods for latent fingerprint detection and recovery. Herein, this paper reports the synthesis of bright blue photoluminescent carbon dots (C-dots) via an eco-friendly and simple one-step microwave-assisted carbonization of potato peels’ biomass. The C-dots were prepared in only 3 min and ground into powder and used without any further treatment. The as-prepared C-dots were characterized using atomic force microscope, Fourier transform infra-red spectroscopy and X-ray diffraction with an average size of 1.0[Formula: see text]nm. The optical properties of the as-prepared C-dots were studied by UV-Vis spectroscopy and spectrofluorometer which established an excitation and emission wavelengths of 390[Formula: see text]nm and 480[Formula: see text]nm, respectively. Owing to their strong solid state fluorescence, the as-prepared C-dots’ powder was successfully used in latent fingerprint detection and imaging on porous and nonporous surfaces. Latent fingerprints were recovered with high resolution and excellent quality providing sufficient details for individual identification. These findings demonstrate that C-dots derived from biomass have a great potential in latent fingerprint analysis for forensic applications.
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Affiliation(s)
- Pogisego Dinake
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Gothatamang Norma Phokedi
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Janes Mokgadi
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
- Chemical, Biological, Nuclear and Radiological Weapons Management Authority, Ministry of Defence, Justice and Security, Private Bag 00384, Gaborone, Botswana
| | - Anthony Ntshekisang
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Mmamiki Ayanda Botlhomilwe
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Rosemary Kelebemang
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
- National Environmental Laboratory, Department of Waste Management and Pollution Control, Plot Number 20576, Extension 16, Magochanyama Road, Private Bag BO 323 Gaborone, Botswana
| | - Obakeng Motswetla
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
| | - Bokang Present
- Department of Physics and Astronomy, Botswana International University of Science and Technology, BIUST, Plot 10071, Boseja-Khurumela Private Bag 16, Palapye, Botswana
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8
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Chiang CW, Chien YC, Yu WJ, Ho CY, Wang CY, Wang TW, Chiang CS, Keng PY. Polymer-Coated Nanoparticles for Therapeutic and Diagnostic Non- 10B Enriched Polymer-Coated Boron Carbon Oxynitride (BCNO) Nanoparticles as Potent BNCT Drug. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2936. [PMID: 34835699 PMCID: PMC8618246 DOI: 10.3390/nano11112936] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022]
Abstract
Boron neutron capture therapy (BNCT) is a powerful and selective anti-cancer therapy utilizing 10B-enriched boron drugs. However, clinical advancement of BCNT is hampered by the insufficient loading of B-10 drugs throughout the solid tumor. Furthermore, the preparation of boron drugs for BNCT relies on the use of the costly B-10 enriched precursor. To overcome these challenges, polymer-coated boron carbon oxynitride (BCNO) nanoparticles, with ~30% of boron, were developed with enhanced biocompatibility, cell uptake, and tumoricidal effect via BNCT. Using the ALTS1C1 cancer cell line, the IC50 of the PEG@BCNO, bare, PEI@BCNO were determined to be 0.3 mg/mL, 0.1 mg/mL, and 0.05 mg/mL, respectively. As a proof-of-concept, the engineered non-10B enriched polymer-coated BCNO exhibited excellent anti-tumor effect via BNCT due to their high boron content per nanoparticle and due to the enhanced cellular internalization and retention compared to small molecular 10B-BPA drug. The astrocytoma ALTS1C1 cells treated with bare, polyethyleneimine-, and polyethylene glycol-coated BCNO exhibited an acute cell death of 24, 37, and 43%, respectively, upon 30 min of neutron irradiation compared to the negligible cell death in PBS-treated and non-irradiated cells. The radical approach proposed in this study addresses the expensive and complex issues of B-10 isotope enrichment process; thus, enabling the preparation of boron drugs at a significantly lower cost, which will facilitate the development of boron drugs for BNCT.
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Affiliation(s)
- Chen-Wei Chiang
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu City 300, Taiwan; (C.-W.C.); (Y.-C.C.); (C.-Y.H.); (C.-Y.W.); (T.-W.W.)
| | - Yun-Chen Chien
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu City 300, Taiwan; (C.-W.C.); (Y.-C.C.); (C.-Y.H.); (C.-Y.W.); (T.-W.W.)
| | - Wen-Jui Yu
- Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu City 300, Taiwan; (W.-J.Y.); (C.-S.C.)
| | - Chia-Yu Ho
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu City 300, Taiwan; (C.-W.C.); (Y.-C.C.); (C.-Y.H.); (C.-Y.W.); (T.-W.W.)
| | - Chih-Yi Wang
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu City 300, Taiwan; (C.-W.C.); (Y.-C.C.); (C.-Y.H.); (C.-Y.W.); (T.-W.W.)
| | - Tzu-Wei Wang
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu City 300, Taiwan; (C.-W.C.); (Y.-C.C.); (C.-Y.H.); (C.-Y.W.); (T.-W.W.)
| | - Chi-Shiun Chiang
- Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu City 300, Taiwan; (W.-J.Y.); (C.-S.C.)
| | - Pei-Yuin Keng
- Department of Material Science and Engineering, National Tsing Hua University, Hsinchu City 300, Taiwan; (C.-W.C.); (Y.-C.C.); (C.-Y.H.); (C.-Y.W.); (T.-W.W.)
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9
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Liu F, Lei T, Zhang Y, Wang Y, He Y. A BCNO QDs-MnO 2 nanosheets based fluorescence "off-on-off" and colorimetric sensor with smartphone detector for the detection of organophosphorus pesticides. Anal Chim Acta 2021; 1184:339026. [PMID: 34625266 DOI: 10.1016/j.aca.2021.339026] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 11/17/2022]
Abstract
In this work, boron carbon oxynitride quantum dots (BCNO QDs) were prepared by a one-step hydrothermal process of ethanolamine and boric acid. BCNO QDs exhibited blue fluorescence with the optimal excitation/emission fluorescence peak at 335 and 420 nm, respectively. As an efficient fluorescence quencher, manganese dioxide (MnO2) nanosheets can effectively quench the fluorescence of BCNO QDs via the inner filter effect (IFE). Acetylcholinesterase (AChE) catalyzes the hydrolysis of acetylcholine (ATCh) to produce thiocholine (TCh). TCh can reductively degrade MnO2 nanosheets to generate Mn2+, thereby recovering the fluorescence of BCNO QDs. Organophosphorus pesticides (OPs) can inhibit the activity of AChE enzymes, thereby preventing the production of TCh and the decomposition of MnO2 nanosheets, resulting in the fluorescence "turn-off". Therefore, the concentration of OPs can be detected by measuring the fluorescence intensity change of AChE-ATCh-MnO2-BCNO-QDs system. Under optimal experimental conditions, the dynamic detection range of paraoxon is 0.1-250 ng mL-1, and the detection limit is 0.03 ng mL-1. Meanwhile, the reaction system also showed concentration-dependent visual color changes from colorless to brownish. Furthermore, we prepared a portable BCNO QDs test paper. By using a smartphone to identify the RGB values of the reaction solution and the corresponding test paper, we carried out the digital image chromaticity analysis, which can shorten the detection time and reduce the detection cost, and provide an effective solution for the rapid detection of OPs on site.
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Affiliation(s)
- Fang Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China; State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Tiantian Lei
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China; State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Yingli Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430062, China
| | - Yaping Wang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430062, China.
| | - Yu He
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China; State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430062, China.
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10
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Nanomaterial-based fluorescent biosensors for monitoring environmental pollutants: A critical review. TALANTA OPEN 2020. [DOI: 10.1016/j.talo.2020.100006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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11
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Bagheri E, Ansari L, Abnous K, Taghdisi SM, Ramezani P, Ramezani M, Alibolandi M. Silica–Quantum Dot Nanomaterials as a Versatile Sensing Platform. Crit Rev Anal Chem 2020; 51:687-708. [DOI: 10.1080/10408347.2020.1768358] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Elnaz Bagheri
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Legha Ansari
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Pouria Ramezani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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12
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Glutathione Modified Fluorescent CdS QDs Synthesized Using Environmentally Benign Pathway for Detection of Mercury Ions in Aqueous Phase. J Fluoresc 2020; 30:773-785. [PMID: 32418161 DOI: 10.1007/s10895-020-02545-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 04/23/2020] [Indexed: 12/11/2022]
Abstract
An adept, rapid and novel water-soluble glutathione functionalized CdS quantum dots (GSH@CdS QDs) were fabricated using green pathway for sensing of heavy metal contamination prevalent in industrial wastewater. GSH@CdS QDs were facilely synthesized in an aqueous phase reaction and were effectively characterized using FT-IR, XRD, FESEM, HRTEM and EDX techniques. The distinct fluorescence characteristics of GSH@CdS QDs were explored and the QDs showed selective sensitivity towards mercury ions with a low limit of detection of 0.54 nM under optimal conditions. The detailed interaction between GSH@CdS QDs and Hg2+ and the probable fluorescence quenching mechanism were established in this study. In comparison to already reported fluorescent probes, GSH@CdS QDs showed high sensitivity, biocompatibility, long fluorescence stability and convenient removal of mercury ions. Graphical Abstract Facile green route for the fabrication of glutathione capped CdS quantum dots for fluorescence-based detection of toxic Hg2+ ions.
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13
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Sun X, Wang J, Yin Y, Wang H, Li S, Liu H, Mao J, Du X. Laser-Ablation-Produced Cobalt Nickel Phosphate with High-Valence Nickel Ions as an Active Catalyst for the Oxygen Evolution Reaction. Chemistry 2020; 26:2793-2797. [PMID: 31840329 DOI: 10.1002/chem.201904510] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Indexed: 12/21/2022]
Abstract
Cost-effective, highly efficient and stable non-noble metal-based catalysts for the oxygen evolution reaction (OER) are very crucial for energy storage and conversion. Here, an amorphous cobalt nickel phosphate (CoNiPO4 ), containing a considerable amount of high-valence Ni3+ species as an efficient electrocatalyst for OER in alkaline solution, is reported. The catalyst was converted from Co-doped Ni2 P through pulsed laser ablation in liquid (PLAL) and exhibits a large specific surface area of 162.5 m2 g-1 and a low overpotential of 238 mV at 10 mA cm-2 with a Tafel slope of 46 mV dec-1 , which is much lower than those of commercial RuO2 and IrO2 . This work demonstrates that PLAL is a powerful technology for generating amorphous CoNiPO4 with high-valence Ni3+ , thus paving a new way towards highly effective OER catalysts.
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Affiliation(s)
- Xuechun Sun
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Jiaqi Wang
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Yuehui Yin
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Haibin Wang
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Shuang Li
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Hui Liu
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Jing Mao
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Xiwen Du
- Institute of New-Energy Materials, Key Laboratory of Advanced Ceramics, and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
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14
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Kanodarwala FK, Moret S, Spindler X, Lennard C, Roux C. Nanoparticles used for fingermark detection—A comprehensive review. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/wfs2.1341] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fehmida K. Kanodarwala
- University of Technology Sydney Centre for Forensic Science Broadway New South Wales Australia
| | - Sébastien Moret
- University of Technology Sydney Centre for Forensic Science Broadway New South Wales Australia
| | - Xanthe Spindler
- University of Technology Sydney Centre for Forensic Science Broadway New South Wales Australia
| | - Chris Lennard
- School of Science & Health Western Sydney University Richmond New South Wales Australia
| | - Claude Roux
- University of Technology Sydney Centre for Forensic Science Broadway New South Wales Australia
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15
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Rong M, Yang X, Huang L, Chi S, Zhou Y, Shen Y, Chen B, Deng X, Liu ZQ. Hydrogen Peroxide-Assisted Ultrasonic Synthesis of BCNO QDs for Anthrax Biomarker Detection. ACS APPLIED MATERIALS & INTERFACES 2019; 11:2336-2343. [PMID: 30576100 DOI: 10.1021/acsami.8b21786] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A facile 3% hydrogen peroxide-assisted ultrasonic synthetic strategy is demonstrated to successfully synthesize fluorescent boron carbon oxynitride quantum dots (BCNO QDs). The obtained BCNO QDs exhibit intense blue fluorescence and favorable biocompatibility and water solubility. The quantum yield of the BCNO QDs is 19.9%. Owing to the absorbance energy-transfer emission effect, an efficient ratiometric fluorescence biosensor is developed for anthrax biomarker detection based on the BCNO QD-ethylenediaminetetraacetic acid disodium salt-Eu3+ complex. Under optimal conditions, the detection limit of the anthrax biomarker is 0.5 nM. Furthermore, the sensitivity of the system was evaluated by Bacillus subtilis spores and with the detection limit as low as 1.95 × 106 spores. On combining a smartphone with the home-made BCNO QD test paper, the lowest recorded visual detection limit of 1.0 μM anthrax biomarker was achieved using a portable UV lamp. The fast response speed, excellent sensitivity, and selectivity of the approach show potential applications in clinical analysis.
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Affiliation(s)
- Mingcong Rong
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Xiaohua Yang
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Longzhen Huang
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Siting Chi
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Youbin Zhou
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Yune Shen
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Buyun Chen
- GuangDong Women and Children Hospital , Guangzhou 510010 , China
| | - Xiangzhou Deng
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
| | - Zhao-Qing Liu
- School of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , China
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