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Ju P, Zhang G, Lu W, Wang S, Li A, Zhang Q, Xin J, Shen L, Jiang L, Zhang E. Water bridges as the trigger in an amino functionalized Zn-MOF for highly selective and sensitive fluorescent sensing of water. Talanta 2024; 274:126068. [PMID: 38599119 DOI: 10.1016/j.talanta.2024.126068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 04/12/2024]
Abstract
Water is a fundamental element for life. The highly selective and sensitive sensing of water is always attractive for mankind in activities such as physiological processes study and extraterrestrial life exploration. Fluorescent MOFs with precise channels and functional groups might specifically recognize water molecules with hydrogen-bond interaction or coordination effects and work as water sensors. As a proof of concept, herein, an amino functionalized Zn-MOF (named as complex 1) with pores that just right for water molecules to form hydrogen bond bridges is revealed for highly selective and sensitive fluorescent sensing of water. The single-crystal X-ray diffraction analysis indicates that the 3D framework of complex 1 is functionalized with free amino groups in the channels. Hydrogen bonds formed in the channel along b-axis as water bridges to connect two adjacent NH2bdc ligands and result in the restriction of intramolecular motions (RIM) which could responsible for the selective turn-on fluorescence response to water. Complex 1 exhibits high sensitive to trace amount of water in organic solvents and could be used for water detection in a wide range water contents. Take advantages of complex 1, portable sensors (complex 1@PMMA) were prepared and used in the highly sensitive water sensing.
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Affiliation(s)
- Ping Ju
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - GuiXue Zhang
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Wenhui Lu
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Shuping Wang
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Anzhang Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Qingxiang Zhang
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Jingyi Xin
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Linglong Shen
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Long Jiang
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Ensheng Zhang
- Key Laboratory of Life-Organic Analysis of Shandong Province, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China.
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2
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Meng X, Wang J, Yang Z, Liu Z, Zhang Z, He S, Li C. Construction of smartphone-adapted signal visualization platform for dual-mode detection of H 2S based on integrated metal-organic framework nanoprobes. Talanta 2024; 270:125517. [PMID: 38091744 DOI: 10.1016/j.talanta.2023.125517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/30/2023] [Accepted: 12/03/2023] [Indexed: 01/27/2024]
Abstract
Hydrogen sulfide (H2S) is a toxic contaminant and has great influence on many physiological processes. Due to various pathophysiological roles and environmental pollution problems, it is necessary to construct and develop simple and portable monitoring sensors for the precise detection of H2S. Herein, we developed a smartphone-adapted dual-mode detection platform by integrating the colorimetric and photothermal imaging analysis into a metal-organic framework-based chip (ZIF-8/Cu). Due to the nanoconfinement effect of ZIF-8, small-sized plasmonic CuS could be in-situ formed during the detection procedure of H2S and endowed the chips with excellent photothermal properties. By constructing a smartphone-adapted photothermal imager, the metal-organic framework-based chip could achieve a portable photothermal imaging analysis of H2S. Moreover, as the formed CuS was a good peroxidase-like nanozyme, the chips could also be used to trigger the enzymic catalytic reaction toward the chromogenic reaction of 3,3',5,5'-tetramethylbenzidine (TMB)-H2O2, thus providing another colorimetric sensing mode by using a smartphone App. In this smartphone-adapted visualization platform, the portable chemosensors could simultaneously achieve double detection modes at one electrode, which provided a new pathway for the accurate detection of H2S and circumvented the false-positive or negative errors during the detection process. Besides, by using the finite difference time domain (FDTD) simulation method, the in-depth mechanism, including the plasmonic effect and spatial electromagnetic field distribution, was explored to provide a possible reason for the excellent sensing performance of the dual-mode visualization platform. This work provides a new insight into the construction of the accurate, portable and smart sensing platform in the visual screening of H2S.
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Affiliation(s)
- Xingxing Meng
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Jing Wang
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Zhen Yang
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Zhiguo Liu
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Zongrui Zhang
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, China
| | - Shuijian He
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Chuanping Li
- Anhui Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application, School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, China; State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, China.
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Zhao L, Wang T, Jiang S, Liu T, Lu Z, Su G, Wu C, Rao H, Wang Y, Sun M, Song C. Hollow CoZnSe@CN nanocage with enzymatic activity for determination of tetracycline using smartphone platforms and virtual reality revealing. Mikrochim Acta 2024; 191:79. [PMID: 38183441 DOI: 10.1007/s00604-023-06159-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/16/2023] [Indexed: 01/08/2024]
Abstract
Antibiotic residues in the environment pose a serious threat to ecosystems and human health. Therefore, it is important to develop sensitive and rapid in situ detection methods. In this work, the designed nanozymes, with excellent four enzyme activities, were proved to be constituted of unique hollow nanocage structures (CoZnSe@CN HCs). Based on the peroxidase-like enzymes, a portable colorimetric sensor was constructed for the on-site determination of tetracycline (TC) in real samples. The linear range of TC detection was 0.1-100 μM, and the detection limit was 0.02 μM. At the same time, colorimetric detection and smartphones have also been combined for on-site colorimetric detection of TC. In-depth exploration of the detection mechanism showed that TC could be bound with the material, inhibiting the production of oxidized 3,3',5,5'-tetramethylbenzidine. The sensor was also used for the detection of TC in environmental soil and water samples. This study can provide an intelligent detection method for environmental monitoring.
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Affiliation(s)
- Liying Zhao
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Tao Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Shaojuan Jiang
- School of Biological and Chemical Engineering, Panzhihua University, Panzhihua, 617000, People's Republic of China
| | - Tao Liu
- College of Information Engineering, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Zhiwei Lu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Gehong Su
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Chun Wu
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Hanbing Rao
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China
| | - Yanying Wang
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China.
| | - Mengmeng Sun
- College of Science, Sichuan Agricultural University, Xin Kang Road, Yucheng District, Ya'an, 625014, People's Republic of China.
| | - Chang Song
- School of Arts and Media, Sichuan Agricultural University, Chengdu, 611130, People's Republic of China.
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4
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Du X, Zhang Y, Xu D. A 1,8-naphthimide-based Fluorescent Probe for Analyzing DMF/H 2O Composition. J Fluoresc 2024; 34:169-178. [PMID: 37166613 DOI: 10.1007/s10895-023-03251-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/20/2023] [Indexed: 05/12/2023]
Abstract
A novel 1,8-naphthalimide fluorescent probe (BNAS) containing 2-thiopheneethylamine moiety was designed and synthesized for analyzing the composition of N,N-dimethylformamide (DMF)/deionized water (H2O) mixtures. With the increase of DMF content, the fluorescence of the system was enhanced from dark to bright yellow-green. Taking 15% (volume) DMF content as the dividing point, the fluorescence intensity of the system at 535 nm showed two good linear relationships with the DMF content 1-15% and 15-99%, based on which the composition of the DMF/H2O mixtures with a volume ratio of 1/99-99/1 could be quickly and efficiently analyzed with high selectivity and sensitivity. BNAS can be applied in real sample assay and further be loaded onto filter paper to make a portable sensor. The mechanism of BNAS response to DMF/H2O composition was also explored.
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Affiliation(s)
- Xinhao Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Yupin Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Dongmei Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
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5
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Basak M, Das G. Fluorescent Probes for Detection of Environmental Contaminants (NACs & VOCs): Probe Design from a Supramolecular Perspective. Chempluschem 2023:e202300179. [PMID: 37431081 DOI: 10.1002/cplu.202300179] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/12/2023]
Abstract
Fresh air and clean water are essential constituents for the human population as well as for fauna and flora to bloom. Owing to the extreme toxicity of NACs and VOCs in physiological systems and their widespread presence in the environment, a serious concern is required. The innovation of chemosensors for these two types of harmful organic contaminants (NACs i.e., nitroaromatics, and VOCs i.e., volatile organic compounds) have unfolded as a key research topic in recent decades, garnering a lot of attention due to their environmental, industrial and biological importance. In recent years, there has been a significant amount of research on both NACs and VOCs chemosensors. This review article has recapitulated the latest development of fluorescent chemosensors especially small molecular frameworks from 2015 to 2022, for NACs and VOCs which has been discussed individually. In addition, the detection of NACs and VOCs on multiple platforms with a special focus on their mechanistic exploration, as well as their probable applications in natural water body specimens, vapor phase detection, and paper strip analysis have also been discussed, in this review.
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Affiliation(s)
- Megha Basak
- IIT Guwahati: Indian Institute of Technology Guwahati, Chemistry, INDIA
| | - Gopal Das
- Indian Institute of Technology Guwahati, Dept. of Chemistrty, North Guwahati, 781039, Guwahati, INDIA
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Paschoarelli MV, Kavai MS, de Lima LF, de Araujo WR. Laser-scribing fabrication of a disposable electrochemical device for forensic detection of crime facilitating drugs in beverage samples. Talanta 2023; 255:124214. [PMID: 36577326 DOI: 10.1016/j.talanta.2022.124214] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
A portable and disposable laser-scribed graphene (LSG) device was fabricated on polyetherimide (PEI) substrate for electrochemical detection of benzodiazepines (BZ) drugs such as diazepam (DZ) and midazolam (MZ) in commercial beverage samples. Morphological characterizations of the LSG material recorded by scanning electron microscopy (SEM) revealed the porous nature of the proposed electrochemical device, which contributed to the enhancement of the electroactive area. Besides, the structural and electrochemical characterizations performed by Raman spectroscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) measurements revealed that the PEI-LSG material presents highly disordered graphene-like structures and high electron transfer features, respectively. The electrochemical detection of DZ and MZ was carried out by Square Wave Voltammetry (SWV), whose analytical curves exhibited two linear intervals in concentrations ranging from 2.5 μmol L-1 to 25.0 μmol L-1 and from 25.0 μmol L-1 to 100.0 μmol L-1 for both BZ. We obtained limits of detection (LOD) and quantification (LOQ) of 0.66 and 2.18 μmol L-1 for DZ and 0.61 μmol L-1 and 2.01 μmol L-1 for MZ, respectively. The developed sensor was applied to detect DZ and MZ in commercial beverages such as juice, whisky, and sugarcane spirit samples to mimic potential forensic evidence of drug-facilitated crimes. The recoveries ranged from 97.1% to 117.2% for DZ and from 92.2% to 114.3% for MZ. In addition, the proposed method presented high manufacturing reproducibility (relative standard deviation (RSD) = 2.18% for DZ and RSD = 3.82% for MZ, n = 8 sensors) and adequate selectivity, highlighting the potential of PEI-LSG sensor as an excellent alternative method for forensic detection of crime facilitating drugs in commercial beverage samples.
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Affiliation(s)
- Mayra V Paschoarelli
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | - Mathias S Kavai
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | - Lucas F de Lima
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | - William R de Araujo
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
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7
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Huang P, Xiong Y, Ge Y, Wen Y, Zeng X, Zhang J, Wang P, Wang Z, Chen S. Magnetic Fe 3O 4 nanoparticles decorated phosphorus-doped biochar-attapulgite/bismuth film electrode for smartphone-operated wireless portable sensing of ultra-trace multiple heavy metal ions. Mikrochim Acta 2023; 190:94. [PMID: 36806986 DOI: 10.1007/s00604-023-05672-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 01/23/2023] [Indexed: 02/20/2023]
Abstract
Pollution caused by both forestry wastes and heavy metals has increasingly drawn attention owing to environmental safety concerns. After essential oil is extracted from Cinnamomum camphoras (L.), the branches are used as forestry wastes to prepare a phosphorus-doped biochar-attapulgite/bismuth film electrode decorated with magnetic Fe3O4 nanoparticles (MBA-BiFE). The smartphone-operated wireless portable sensor is employed for the simultaneous ultratrace voltammetric detection of multiple heavy metal ions (Cd2+, Pb2+, and Hg2+). Cd2+, Pb2+, and Hg2+ exhibit excellent electrochemical responses in linear ranges of 0.1 nM-5 μM, 0.01 nM-7 μM, and 0.1 nM-3 μM with limits of detection equal to 0.036, 0.003, and 0.011 nM, respectively. The recoveries of MBA-BiFE for Cd2+, Pb2+, and Hg2+ are 93.6-109.9%, 86.0-107.5%, and 94.8-104.6%, respectively, and the RSD values for repeated measurements of Cd2+, Pb2+, and Hg2+ are 4.2%, 2.8%, and 3.3%, respectively. A machine learning model based on an artificial neural network algorithm is constructed to enable a smart determination of ultratrace hazardous multiple metal ions. The portable sensor based on the screen-printed integrated three-electrode sensor modified using MBA-BiFE demonstrates advantages and practicability in outdoor detection, compared with conventional sensors based on MBA-BiFE. This study provides a smartphone-operated wireless portable sensing technique for high-potential applications in environmetallomics or agrometallomics using forestry waste-derived biochar as substrate for electrode preparation. HIGHLIGHTS: • Fe3O4 decorated phosphorus-doped biochar-attapulgite/bismuth film electrode. • A smartphone-operated sensor for analysis of multiple heavy metal ions. • An Artificial neural network model for smart analysis of Cd2+, Pb2+, and Hg2+.
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Affiliation(s)
- Peng Huang
- College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Nanchang, 330045, People's Republic of China
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China
| | - Yao Xiong
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China
| | - Yu Ge
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China
| | - Yangping Wen
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
| | - Xiaoyan Zeng
- College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Nanchang, 330045, People's Republic of China
| | - Ji Zhang
- College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Nanchang, 330045, People's Republic of China
| | - Peng Wang
- College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Nanchang, 330045, People's Republic of China
| | - Zongde Wang
- College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Nanchang, 330045, People's Republic of China
- Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China
| | - Shangxing Chen
- College of Forestry, Jiangxi Agricultural University, East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration, Nanchang, 330045, People's Republic of China.
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Singh GP, Sardana N. Smartphone-based Surface Plasmon Resonance Sensors: a Review. Plasmonics 2022; 17:1869-1888. [PMID: 35702265 PMCID: PMC9184243 DOI: 10.1007/s11468-022-01672-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
The surface plasmon resonance (SPR) is a phenomenon based on the combination of quantum mechanics and electromagnetism, which leads to the creation of charge oscillations on a metal-dielectric interface. The SPR phenomenon creates a signal which measures refractive index change at the metal-dielectric interface. SPR-based sensors are being developed for real-time and label-free detection of water pollutants, toxins, disease biomarkers, etc., which are highly sensitive and selective. Smartphones provide hardware and software capability which can be incorporated into SPR sensors, enabling the possibility of economical and accurate on-site portable sensing. The camera, screen, and LED flashlight of the smartphone can be employed as components of the sensor. The current article explores the recent advances in smartphone-based SPR sensors by studying their principle, components, application, and signal processing. Furthermore, the general theoretical and practical aspects of SPR sensors are discussed.
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Affiliation(s)
- Gaurav Pal Singh
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Ropar, Rupnagar, 140001 India
| | - Neha Sardana
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Ropar, Rupnagar, 140001 India
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Li Y, Chen P, Gao G, Qin L, Yang H, Zhang X. A smart microhydrogel membrane sensor realized by pipette tip. Biosens Bioelectron 2022; 211:114341. [PMID: 35594625 DOI: 10.1016/j.bios.2022.114341] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 11/17/2022]
Abstract
In this paper, we describe a simple and practical way to prepare hydrogel membranes in a conical channel (pipette tip). We used a pipette to create a gas pressure difference on both sides of the gel precursor, which drove the gel precursor to move in the pipette tip. During movement, the shape of the hydrogel precursor gradually becomes thinner as the radius of the tapered channel becomes larger. We use this principle to realize the highly controllable preparation of the hydrogel membrane structure (130 μm at its thinnest). Moreover, we fabricated a hydrogel membrane sensor in one step by implanting smart molecules in the hydrogel, which achieved rapid and sensitive detection of 0.5 μM-500 mM potassium ions. This method of preparing the hydrogel membrane sensor does not rely on professional membrane production equipment and complex molecular design processes, has high gel utilization and simple and controllable membrane thickness, and has a wide range of application value in the field of intelligent hydrogel-based analysis technology.
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Affiliation(s)
- Yansheng Li
- Beijing Key Laboratory for Sensors, Beijing Information Science & Technology University, Beijing, 100192, PR China; Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing, 100192, PR China
| | - Peng Chen
- Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases, Robot Intelligent Laboratory of Traditional Chinese Medicine, Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Guowei Gao
- Beijing Key Laboratory for Sensors, Beijing Information Science & Technology University, Beijing, 100192, PR China; Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing, 100192, PR China.
| | - Lei Qin
- Beijing Key Laboratory for Sensors, Beijing Information Science & Technology University, Beijing, 100192, PR China
| | - Hongjun Yang
- Beijing Key Laboratory of Traditional Chinese Medicine Basic Research on Prevention and Treatment for Major Diseases, Robot Intelligent Laboratory of Traditional Chinese Medicine, Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, 100700, PR China
| | - Xueji Zhang
- School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, Guangdong, 518060, PR China.
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Das T, Mohar M. Development of a smartphone-based real time cost-effective VOC sensor. Heliyon 2020; 6:e05167. [PMID: 33088950 DOI: 10.1016/j.heliyon.2020.e05167] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/05/2020] [Accepted: 10/01/2020] [Indexed: 11/22/2022] Open
Abstract
Air pollution by various volatile organic compounds (VOC) is a matter of concern for us. So in this regard, designing real-time VOC responsive materials is gaining attention across the scientific community. In this present work, we have developed an inexpensive VOC sensor based on a Meisenheimer complex derived from picric acid and N,N'-dicyclohexylcarbodiimide. The sensor coated TLC plate was used as a sensor of potentially harmful VOCs. The sensor coated TLC plate looks deep red colored and does not show any fluorescence emission under 366 nm UV light. But in the presence of harmful volatile organic compounds like benzene, toluene, xylene, etc the sensor coated TLC plate becomes orange colored and it also shows strong yellow emission under 366 nm UV light. This property was utilized to detect the VOCs by fluorescence spectroscopy. The detection limit for various VOCs was found to be in the range of 0.7-9 ppm. To make the sensor user friendly, we have demonstrated a method where VOCs can be detected using a smartphone in real-time and also the setup is portable.
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Bocanegra-Rodríguez S, Jornet-Martínez N, Molins-Legua C, Campíns-Falcó P. Portable solid sensor supported in nylon for silver ion determination: testing its liberation as biocide. Anal Bioanal Chem 2020; 412:4393-4402. [PMID: 32430541 DOI: 10.1007/s00216-020-02680-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/16/2020] [Accepted: 04/23/2020] [Indexed: 01/27/2023]
Abstract
This paper reports the fabrication and utility of a new solid sensor, which allows the quantitation of silver ions acting as catalyst at the low micromolar level. The optical sensor was prepared by incorporating both reagents, pyrogallol red (PGR) and 1,10-phenanthroline (Phen), in a nylon membrane. The effect of parameters in determining silver-catalyzed oxidation of PGR by persulfate in the presence of Phen as an activator was studied and optimized for achieving suitable sensitivity. Semiquantitative analysis can be performed by visual inspection of the color of the sensor by comparing it with standard responses and quantitative analysis can be carried out by its diffuse reflectance (DR) measurement or by a digital image-processing tool (GIMP) using a smartphone. The sensor exhibited a linear relationship toward Ag(I) concentrations ranging from 0.4 to 10 μM or 1-25 μM and limits of detection of 0.1 μM or 0.3 μM for incubation times of 50 and 30 min, respectively. The relative standard deviation achieved for several batches of sensors was around 2%. The analysis of water samples from tap and refrigerating circuits containing solid biocides, which leach silver ions, prove that this portable and sustainable sensor is successfully operational in real situations. Graphical abstract.
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Affiliation(s)
- Sara Bocanegra-Rodríguez
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - Neus Jornet-Martínez
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain
| | - Carmen Molins-Legua
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain.
| | - Pilar Campíns-Falcó
- MINTOTA Research Group, Departament de Química Analítica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100, Burjassot, Valencia, Spain.
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Citartan M, Tang TH. Recent developments of aptasensors expedient for point-of-care (POC) diagnostics. Talanta 2019; 199:556-566. [PMID: 30952298 DOI: 10.1016/j.talanta.2019.02.066] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 02/15/2019] [Accepted: 02/16/2019] [Indexed: 12/12/2022]
Abstract
Aptamers are nucleic acid-based molecular recognition elements that are specific and have high binding affinity against their respective targets. On account of their target recognition capacity, aptamers are widely utilized in a number of applications including diagnostics. This review aims to highlight the recent developments of aptasensors expedient for point-of-care (POC) diagnostics. Significant focus is given on the primary assay formats of aptamers such as fluorescence, electrochemical, surface plasmon resonance (SPR) and colorimetric assays. A potpourri of platforms such as paper-based device, lateral flow assay, portable electrodes, portable SPR and smart phones expedient for point-of-care (POC) diagnostics are discussed. Emphasis is also given on the technicalities and assay configurations associated with the sensors.
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Affiliation(s)
- Marimuthu Citartan
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, Penang 13200, Malaysia.
| | - Thean-Hock Tang
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, Kepala Batas, Penang 13200, Malaysia
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13
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Day C, Søpstad S, Ma H, Jiang C, Nathan A, Elliott SR, Karet Frankl FE, Hutter T. Impedance-based sensor for potassium ions. Anal Chim Acta 2018; 1034:39-45. [PMID: 30193638 DOI: 10.1016/j.aca.2018.06.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/07/2018] [Accepted: 06/15/2018] [Indexed: 11/17/2022]
Abstract
A conductometric sensor for potassium ions in solution is presented. Interdigitated, planar gold electrodes were coated with a potassium-selective polymer membrane composed of a poly(vinyl chloride) matrix with about 65 wt% of plasticiser and 2-5 wt% of a potassium-selective ionophore. The impedance of the membrane was measured, using the electrodes as a transducer, and related to the concentration of potassium in a sample solution in contact with the membrane. Sensitivity was optimised by varying the sensor components, and selectivity for potassium over sodium was also shown. The resulting devices are compact, miniature, robust sensors which, by means of impedance measurements, eliminate the need for a reference electrode. The sensor was tested for potassium concentration changes of 2 mM across the clinically relevant range of 2.7-18.7 mM.
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Affiliation(s)
- C Day
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom.
| | - S Søpstad
- Institute for Microsystems, University College of Southeast Norway, N-3184, Borre, Norway; Zimmer & Peacock AS, N-3183, Horten, Norway.
| | - H Ma
- Electrical Engineering Division, Engineering Department, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, United Kingdom.
| | - C Jiang
- Electrical Engineering Division, Engineering Department, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, United Kingdom.
| | - A Nathan
- Electrical Engineering Division, Engineering Department, University of Cambridge, 9 JJ Thomson Avenue, Cambridge, CB3 0FA, United Kingdom.
| | - S R Elliott
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom.
| | - F E Karet Frankl
- Cambridge Institute for Medical Research, Cambridge Biomedical Campus, Cambridge, CB2 0XY, United Kingdom.
| | - T Hutter
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom.
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14
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Zhao M, Wang P, Guo Y, Wang L, Luo F, Qiu B, Guo L, Su X, Lin Z, Chen G. Detection of aflatoxin B 1 in food samples based on target-responsive aptamer-cross-linked hydrogel using a handheld pH meter as readout. Talanta 2017; 176:34-39. [PMID: 28917759 DOI: 10.1016/j.talanta.2017.08.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/29/2017] [Accepted: 08/02/2017] [Indexed: 01/02/2023]
Abstract
Aflatoxin B1 (AFB1) can cause great threat to human health, so the development of convenient and portable device for sensitive detection of AFB1 is highly desired. The portable pH meter has the characters of facile operation, low cost, and easy availability. Therefore, in this study, we investigate the applicability of utilizing a pH meter as the readout to develop a portable sensor for AFB1. The specific detection of AFB1 is realized via the combination of AFB1-responsive aptamer-cross-linked hydrogel. Upon the addition of AFB1, AFB1 binds to its aptamer with high affinity in lieu of aptamer/DNA complex, causing the collapse of hydrogel network and results in the releasing of urease into the solution. The released urease can catalyse the hydrolysis of urea and result in the rise of pH value. The change of pH value has a direct relationship to the concentration of AFB1 in the range of 0.2-20µM with a detection limit of 0.1µM (S/N = 3). The proposed portable device is successfully applied to assay AFB1 in the food samples with satisfied results.
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Affiliation(s)
- Mengmeng Zhao
- Institute of Quality Standards & Testing Technology for Agriculture Products, China Agricultural Academy of Sciences, Key Laboratory of Agrifood Safety and Quality, Ministry of Agriculture, Beijing 100081, PR China; MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Peilong Wang
- Institute of Quality Standards & Testing Technology for Agriculture Products, China Agricultural Academy of Sciences, Key Laboratory of Agrifood Safety and Quality, Ministry of Agriculture, Beijing 100081, PR China
| | - Yajuan Guo
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Lixu Wang
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Fang Luo
- College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Bin Qiu
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Longhua Guo
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China.
| | - Xiaoou Su
- Institute of Quality Standards & Testing Technology for Agriculture Products, China Agricultural Academy of Sciences, Key Laboratory of Agrifood Safety and Quality, Ministry of Agriculture, Beijing 100081, PR China.
| | - Zhenyu Lin
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Guonan Chen
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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