1
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Huang R, Qin Y, Huang Y, Huang Z, Ye GJ. A convenient smartphone-assisted colorimetric for 6-Mercaptopurine detection using enhanced oxidase-like activity of β-cyclodextrin modified MnO 2 nanosheets. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124493. [PMID: 38796891 DOI: 10.1016/j.saa.2024.124493] [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: 02/01/2024] [Revised: 04/24/2024] [Accepted: 05/19/2024] [Indexed: 05/29/2024]
Abstract
6-mercaptopurine (6-MP) is widely used in the treatment of many diseases, but exhibits some serious side effects due to its toxicity. Therefore, it is important and imperative to effectively control and monitoring concentration of 6-MP. Herein, we designed a smartphone-assisted colorimetric sensing platform for 6-MP detection, based on an excellent β-cyclodextrin modified MnO2 nanosheets (β-CD@MnO2 NNS) mediated oxidase-like activity. β-CD@MnO2 NNS can directly oxidizes 3,3',5,5'-tetramethylbenzidine (TMB) into oxidized TMB with color changes, yielding more than 3-fold higher oxidase-like catalytic activity compared with individual MnO2 NNS. After adding 6-MP, β-CD@MnO2 NNS can be reduced to Mn2+ and lose their oxidase-like properties, resulting in a color and absorbance change for sensitive and selectivity detection of 6-MP. Meanwhile, the smartphone-based color recognition application can intuitively and simply measure the concentration of 6-MP. The limits of detection UV-vis instrument and smartphone were 0.35 μM and 0.86 μM, respectively. This method has also been successfully applied to the detection of real samples. Finally, this study provides a new promising platform for detection of 6-MP and is expected to be used in application of pharmaceutical analysis and biomedicine.
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Affiliation(s)
- Ruiqi Huang
- Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Pharmaceutical College, Guangxi Medical University, Nanning 530021, PR China
| | - Yingfeng Qin
- Key Laboratory of Biological Molecular Medicine Research (Guangxi Medical University), Education Department of Guangxi Zhuang Autonomous Region, School of Basic Medical Sciences, Nanning 530021, PR China.
| | - Yanqin Huang
- Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Pharmaceutical College, Guangxi Medical University, Nanning 530021, PR China
| | - Zengqiong Huang
- Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Pharmaceutical College, Guangxi Medical University, Nanning 530021, PR China.
| | - Gao-Jie Ye
- Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Pharmaceutical College, Guangxi Medical University, Nanning 530021, PR China; Key Laboratory of Longevity and Aging-related Diseases of Chinese Ministry of Education, Guangxi Medical University, Nanning 530021, PR China.
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2
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Zhang D, Zhang Y, Li K, Wang S, Ma Y, Liao Y, Wang F, Liu H. A smartphone-combined ratiometric fluorescence molecularly imprinted probe based on biomass-derived carbon dots for determination of tyramine in fermented meat products. Food Chem 2024; 454:139759. [PMID: 38805926 DOI: 10.1016/j.foodchem.2024.139759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 05/08/2024] [Accepted: 05/18/2024] [Indexed: 05/30/2024]
Abstract
A ratiometric fluorescence molecularly imprinted probe employing two distinct emission wavelengths of biomass carbon dots was developed for highly selective and visual quantitative detection of tyramine in fermented meat products. The red emission biomass carbon dots were employed as responsive elements, and the blue ones were utilized as the reference elements. The molecularly imprinted polymers were incorporated in the ratiometric sensing to distinguish and adsorb tyramine. With the linear range of 1-60 μg/L, the ratiometric fluorescence molecularly imprinted probe was successfully applied to detect tyramine in real samples with the satisfactory recoveries of 79.74-112.12% and the detect limitation of 1.3 μg/kg, indicating that this probe has great potential applications for the detection of tyramine in real samples. Moreover, smartphone-based fluorescence signal recognition analysis on hand has been developed for the quantitative analysis of tyramine, providing a portable visual optical analysis terminal for rapid on-site determination of tyramine.
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Affiliation(s)
- Dianwei Zhang
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Yuhua Zhang
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Kexin Li
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Shengnan Wang
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Yuanchen Ma
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Yonghong Liao
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Fenghuan Wang
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China..
| | - Huilin Liu
- Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China..
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3
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Ren XH, Ma ZB, Zhang HR, He XW, Li WY, Zhang YK. A dual-response ratiometric fluorescent sensor by europium-doped silicon nanoparticles for fluorescent and smartphone imaging detection of tetracycline. Talanta 2024; 278:126432. [PMID: 38917547 DOI: 10.1016/j.talanta.2024.126432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 06/08/2024] [Accepted: 06/13/2024] [Indexed: 06/27/2024]
Abstract
Given the threat to human health posed by the abuse of tetracycline (TC), the development of a portable, on-site methods for highly sensitive and rapid TC detection is crucial. In this work, we initially synthesized europium-doped silicon nanoparticles (SiEuNPs) through a facile one-pot microwave-assisted method. Due to its blue-red dual fluorescence emission (465 nm/627 nm), which was respectively attributed to the silicon nanoparticles and Eu3+, SiEuNPs were designed as a ratiometric fluorescent sensor for TC detection. For the dual-signal reverse response mechanism: TC quenched the blue emission from silicon nanoparticles through inner filter effect (IFE), and enhanced the red emission through "antenna effect" (AE) between TC and Eu3+, the nanoprobe was able to detect TC within a range of 0.2-10 μM with a limit of detection (LOD) of 10.7 nM. Notably, the equilibrium detection time was only 1 min, achieving rapid TC detection. Furthermore, TC was also measured in real samples (tap water, milk and honey) with recoveries ranging from 95.7 % to 117.0 %. More importantly, a portable smartphone-assisted on-site detection platform was developed, enabling real-time qualitative identification and semi-quantitative analysis of TC based on fluorescence color changes. This work not only provided a novel doped silicon nanoparticles strategy, but also constructed a ratiometric sensing platform with dual-signal reverse response for intuitive and real-time TC detection.
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Affiliation(s)
- Xing-Hui Ren
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Zi-Bo Ma
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Hao-Rui Zhang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xi-Wen He
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Wen-You Li
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China.
| | - Yu-Kui Zhang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China; National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
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4
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Kowalska A, Adamska E, Grobelna B. Medical Applications of Silver and Gold Nanoparticles and Core-Shell Nanostructures Based on Silver or Gold Core: Recent Progress and Innovations. ChemMedChem 2024; 19:e202300672. [PMID: 38477448 DOI: 10.1002/cmdc.202300672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/14/2024]
Abstract
Nanoparticles (NPs) of noble metals such as silver (Ag NPs) or gold (Au NPs) draw the attention of scientists looking for new compounds to use in medical applications. Scientists have used metal NPs because of their easy preparation, biocompatibility, ability to influence the shape and size or modification, and surface functionalization. However, to fully use their capabilities, both the benefits and their potential threats should be considered. One possibility to reduce the potential threat and thus prevent the extinction of their properties resulting from the agglomeration, they are covered with a neutral material, thus obtaining core-shell nanostructures that can be further modified and functionalized depending on the subsequent application. In this review, we focus on discussing the properties and applications of Ag NPs and Au NPs in the medical field such as the treatment of various diseases, drug carriers, diagnostics, and many others. In addition, the following review also discusses the use and potential applications of Ag@SiO2 and Au@SiO2 core-shell nanostructures, which can be used in cancer therapy and diagnosis, treatment of infections, or tissue engineering.
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Affiliation(s)
- Agata Kowalska
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stosza Gdańsk, 63, 80-308, Gdansk, Poland
| | - Elżbieta Adamska
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stosza Gdańsk, 63, 80-308, Gdansk, Poland
| | - Beata Grobelna
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdansk, Wita Stosza Gdańsk, 63, 80-308, Gdansk, Poland
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5
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Mu J, Li X, Jia Q. Anchoring Au nanoclusters into coordination polymers: A novel approach toward ATP detection and its application. Talanta 2024; 277:126306. [PMID: 38795592 DOI: 10.1016/j.talanta.2024.126306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/09/2024] [Accepted: 05/20/2024] [Indexed: 05/28/2024]
Abstract
Adenosine triphosphate (ATP) is the main source of energy required for all life activities and is used as a biomarker for diseases such as cancer. It is of great significance to design a novel fluorescent probe with favorable performance for monitoring the changes of ATP concentration. Herein, a fluorescence probe named ZnCPs@AuNCs for ATP sensing was designed and fabricated by integrating AuNCs into ZnCPs. The emission intensity of AuNCs was greatly enhanced upon the formation of the ZnCPs@AuNCs nanocomposites, which may be attributed to ZnCPs restricting the molecular motion of AuNCs. Upon the introduction of ATP, the fluorescence intensity at 564 nm of ZnCPs@AuNCs is quenched. According to this phenomenon, a sensitive and reliable ATP sensing platform was established. Moreover, ZnCPs@AuNCs were incorporated into a poly (vinyl alcohol) matrix for the fabrication of fluorescent film, which exhibited solid-state fluorescence. Inspired by the remarkable fluorescent properties of ZnCPs@AuNCs, the fluorescent hydrogel was prepared by mixing ZnCPs@AuNCs with κ-carrageenan, which demonstrated a response to ATP and favorable self-healing ability. This work presents a perspective of ZnCPs@AuNCs in multiple applications such as biosensing, fluorescent film, and hydrogel construction.
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Affiliation(s)
- Jin Mu
- College of Chemistry, Jilin University, Changchun, 130012, China
| | - Xiqian Li
- Obstetrics & Gynecology, China-Japan Union Hospital of Jilin University, Changchun, 130012, China
| | - Qiong Jia
- College of Chemistry, Jilin University, Changchun, 130012, China.
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6
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Liang M, Gao Y, Sun X, Kong RM, Xia L, Qu F. Metal-organic framework-based ratiometric point-of-care testing for quantitative visual detection of nitrite. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:134021. [PMID: 38490146 DOI: 10.1016/j.jhazmat.2024.134021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/03/2024] [Accepted: 03/11/2024] [Indexed: 03/17/2024]
Abstract
Nitrite (NO2-) is categorized as a carcinogenic substance and is subjected to severe limitations in water and food. To safeguard the public's health, developing fast and convenient methods for determination of NO2- is of significance. Point-of-care testing (POCT) affords demotic measurement of NO2- and shows huge potential in future technology beyond those possible with traditional methods. Here, a novel ratiometric fluorescent nanoprobe (Ru@MOF-NH2) is developed by integrating UiO-66-NH2 with tris(2,2'-bipyridyl)ruthenium(II) ([Ru(bpy)3]2+) through a one-pot approach. The special diazo-reaction between the amino group of UiO-66-NH2 and NO2- is responsible for the report signal (blue emission) with high selectivity and the red emission from [Ru(bpy)3]2+ offers the reference signal. The proposed probe shows obviously distinguishable color change from blue to red towards NO2- via naked-eye. Moreover, using a smartphone as the detection device to read color hue, ultra-sensitive quantitative detection of NO2- is achieved with a low limit of detection at 0.6 μΜ. The accuracy and repeatability determined in spiked samples through quantitative visualization is in the range of 105 to 117% with a coefficient of variation below 4.3%. This POCT sensing platform presents a promising strategy for detecting NO2- and expands the potential applications for on-site monitoring in food and environment safety assessment.
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Affiliation(s)
- Maosheng Liang
- Chemistry and Chemical Engineering College, Qufu Normal University, Qufu, Shandong 273165, PR China
| | - Yifan Gao
- Chemistry and Chemical Engineering College, Qufu Normal University, Qufu, Shandong 273165, PR China
| | - Xiaoling Sun
- Chemistry and Chemical Engineering College, Qufu Normal University, Qufu, Shandong 273165, PR China
| | - Rong-Mei Kong
- Chemistry and Chemical Engineering College, Qufu Normal University, Qufu, Shandong 273165, PR China
| | - Lian Xia
- Chemistry and Chemical Engineering College, Qufu Normal University, Qufu, Shandong 273165, PR China.
| | - Fengli Qu
- Chemistry and Chemical Engineering College, Qufu Normal University, Qufu, Shandong 273165, PR China
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7
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Li Y, Kong Y, Hu Y, Li Y, Asrosa R, Zhang W, Deka Boruah B, Yetisen AK, Davenport A, Lee TC, Li B. A paper-based dual functional biosensor for safe and user-friendly point-of-care urine analysis. LAB ON A CHIP 2024; 24:2454-2467. [PMID: 38644805 PMCID: PMC11060138 DOI: 10.1039/d4lc00163j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/10/2024] [Indexed: 04/23/2024]
Abstract
Safe, accurate, and reliable analysis of urinary biomarkers is clinically important for early detection and monitoring of the progression of chronic kidney disease (CKD), as it has become one of the world's most prevalent non-communicable diseases. However, current technologies for measuring urinary biomarkers are either time-consuming and limited to well-equipped hospitals or lack the necessary sensitivity for quantitative analysis and post a health risk to frontline practitioners. Here we report a robust paper-based dual functional biosensor, which is integrated with the clinical urine sampling vial, for the simultaneous and quantitative analysis of pH and glucose in urine. The pH sensor was fabricated by electrochemically depositing IrOx onto a paper substrate using optimised parameters, which enabled an ultrahigh sensitivity of 71.58 mV pH-1. Glucose oxidase (GOx) was used in combination with an electrochemically deposited Prussian blue layer for the detection of glucose, and its performance was enhanced by gold nanoparticles (AuNPs), chitosan, and graphite composites, achieving a sensitivity of 1.5 μA mM-1. This dual function biosensor was validated using clinical urine samples, where a correlation coefficient of 0.96 for pH and 0.98 for glucose detection was achieved with commercial methods as references. More importantly, the urine sampling vial was kept sealed throughout the sample-to-result process, which minimised the health risk to frontline practitioners and simplified the diagnostic procedures. This diagnostic platform, therefore, holds high promise as a rapid, accurate, safe, and user-friendly point-of-care (POC) technology for the analysis of urinary biomarkers in frontline clinical settings.
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Affiliation(s)
- Yujia Li
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
- Department of Chemistry, University College London, London, WC1E 7JE, UK
| | - Yingqi Kong
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
- Department of Chemistry, University College London, London, WC1E 7JE, UK
| | - Yubing Hu
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Yixuan Li
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
- Department of Chemistry, University College London, London, WC1E 7JE, UK
| | - Rica Asrosa
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
- Department of Chemistry, University College London, London, WC1E 7JE, UK
- Department of Physics, Faculty of Mathematics and Natural Science, Universitas Sumatera Utara, Medan 20155, Sumatera Utara, Indonesia
| | - Wenyu Zhang
- Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK
| | - Buddha Deka Boruah
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
| | - Ali K Yetisen
- Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, UK
| | - Andrew Davenport
- UCL Department of Renal Medicine, Royal Free Hospital, University College London, Rowland Hill Street, London, NW3 2PF, UK
| | - Tung-Chun Lee
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
| | - Bing Li
- Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.
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8
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Yang L, Hu W, Pei F, Liu Z, Wang J, Tong Z, Mu X, Du B, Xia M, Wang F, Liu B. A ratiometric fluorescence imprinted sensor based on N-CDs and metal-organic frameworks for visual smart detection of malathion. Food Chem 2024; 438:138068. [PMID: 38011790 DOI: 10.1016/j.foodchem.2023.138068] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/12/2023] [Accepted: 11/20/2023] [Indexed: 11/29/2023]
Abstract
Sensitive and rapid detection of pesticide residues in food is essential for human safety. A ratiometric imprinted fluorescence sensor N-CDs@Eu-MOF@MIP (BR@MIP) was constructed to sensitively detect malathion (Mal). Europium-based metal organic frameworks (Eu-MOF) were used as supporters to improve the sensitivity of the BR@MIP. N-doped carbon dots (N-CDs) were used as fluorescent source to produce fluorescent signal. A linear relationship between the concentration of Mal and the fluorescence response of the sensor was found in the Mal concentration range of 1-10 μM with a limit of detection (LOD) of 0.05 μM. Furthermore, the sensor was successfully applied for the detection of Mal in lettuce, tap water, and soil samples, with recoveries in the range of 93.0 % - 99.3 %. Additionally, smartphone-based sensors were used to detect Mal in simulated real samples. Thus, the construction of ratiometric imprinted fluorescence sensor has provided a good strategy for the detection of Mal.
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Affiliation(s)
- Lidong Yang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China; School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Wei Hu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Fubin Pei
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China; School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Zhiwei Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Jiang Wang
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Zhaoyang Tong
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Xihui Mu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Bin Du
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
| | - Mingzhu Xia
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Fengyun Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
| | - Bing Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing 102205, China
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9
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Li D, Huo Z, Xia L, Xiao X, Li G. A Portable Array Visualization Device Integrating Sample Preparation and Detection All-in-One for the On-Site Analysis of Complex Samples. Anal Chem 2024; 96:5368-5374. [PMID: 38528372 DOI: 10.1021/acs.analchem.4c00610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
A gas membrane separation/array fluorescence visualization (GMS/AFV) device is developed by integrating hydrazine-based carbonized copolymer dots (PD-N2H4) for visual on-site analysis. The novel PD-N2H4 was synthesized using a "polymer template" approach, exhibiting strong blue fluorescence capable of visual sensing. The GMS/AFV device integrates sample preparation and detection all-in-one, consisting of a smartphone, a sample pretreatment system, and an optical system. In the detection procedure, the samples will be treated in the sample pretreatment system to create volatile gases. Therefore, any gas samples as well as solid and liquid samples that potentially produce volatile gases can be visually detected on-site by the device. H2S was utilized as a model analyte to test the practicality of the GMS/AFV device. The entire analysis can be finished in 3 min, and the limit of detection of H2S is as low as 3.4 μg/L. Surprisingly, the device is also capable of high-throughput sample detection, which can process 48 samples simultaneously in about 20 min. The device offers a quick, easy, cheap, and environmentally friendly way to analyze volatile gases, and it creates new opportunities for on-site detection of complex samples.
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Affiliation(s)
- Dan Li
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhiming Huo
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Ling Xia
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiaohua Xiao
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
| | - Gongke Li
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China
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10
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Chen M, Yang Y, Chen Q, Tang L, Liu J, Sun Y, Liu Q, Zhang Y, Zhang GJ, Chen S. Pt,P-codoped carbon nitride nanoenzymes for fluorescence and colorimetric dual-mode detection of cholesterol. Anal Chim Acta 2024; 1297:342351. [PMID: 38438235 DOI: 10.1016/j.aca.2024.342351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 03/06/2024]
Abstract
Cholesterol is an important lipid compound found in a variety of foods, and its level in human blood is closely related to human health. Therefore, development of rapid and accurate POCT (point-of-care testing) methods for cholesterol detection is crucial for assessing food quality and early diagnosis of diseases, in particular, in a resource-limited environment. In this study, a smartphone-assisted colorimetric biosensor is constructed based on platinum,phosphorus-codoped carbon nitride (PtCNP2) for the rapid detection of cholesterol. Phosphorus-doped carbon nitride is prepared by thermal annealing of urea and NH4PF6, into which platinum is atomically dispersed by thermal refluxing. The obtained PtCNP2 exhibits an excellent peroxidase-like activity under physiological pH, whereby colorless o-phenylenediamine (OPD) is oxidized to colored 2,3-diaminophenazine (DAP) in the presence of hydrogen peroxide (H2O2), which can be produced during the oxidation of cholesterol by cholesterol oxidase. A smartphone-assisted visual sensing system is then constructed based on the color recognition software, and rapid on-site detection of cholesterol is achieved by reading the RGB values. Meanwhile, the generated DAP shows an apparent fluorescence signal and can realize highly sensitive detection of cholesterol by the change of the fluorescence signal intensity. Such a cholesterol sensor exhibits a wide linear detection range of 0.5-600 μg mL-1 and a low detection limit of 59 ng mL-1. The practicality of the sensor is successfully demonstrated in the rapid detection of cholesterol in serum and food.
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Affiliation(s)
- Meiling Chen
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Yang Yang
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen, 518101, China
| | - Qinhua Chen
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen, 518101, China
| | - Lina Tang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Junlin Liu
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Yujie Sun
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Qiming Liu
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95060, USA
| | - Yulin Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China; Hubei Shizhen Laboratory, Wuhan, Hubei 430065, China.
| | - Guo-Jun Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China; Hubei Shizhen Laboratory, Wuhan, Hubei 430065, China.
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95060, USA.
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11
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Guo J, Teymur A, Tang C, Saxena R, Wu T. Advancing Point-of-Care Diagnosis: Digitalizing Combinatorial Biomarker Signals for Lupus Nephritis. BIOSENSORS 2024; 14:147. [PMID: 38534254 DOI: 10.3390/bios14030147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 03/28/2024]
Abstract
To improve the efficiency and patient coverage of the current healthcare system, user-friendly novel homecare devices are urgently needed. In this work, we developed a smartphone-based analyzing and reporting system (SBARS) for biomarker detection in lupus nephritis (LN). This system offers a cost-effective alternative to traditional, expensive large equipment in signal detection and quantification. This innovative approach involves using a portable and affordable microscopic reader to capture biomarker signals. Through smartphone-based image processing techniques, the intensity of each biomarker signal is analyzed. This system exhibited comparable performance to a commercial Genepix scanner in the detection of two potential novel biomarkers of LN, VISG4 and TNFRSF1b. Importantly, this smartphone-based analyzing and reporting system allows for discriminating LN patients with active renal disease from healthy controls with the area-under-the-curve (AUC) value = 0.9 for TNFRSF1b and 1.0 for VSIG4, respectively, indicating high predictive accuracy.
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Affiliation(s)
- Jiechang Guo
- Department of Biomedical Engineering, University of Houston, Houston, TX 77024, USA
- Department of Computer Science, University of Houston, Houston, TX 77024, USA
| | - Aygun Teymur
- Department of Biomedical Engineering, University of Houston, Houston, TX 77024, USA
| | - Chenling Tang
- Department of Biomedical Engineering, University of Houston, Houston, TX 77024, USA
| | - Ramesh Saxena
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tianfu Wu
- Department of Biomedical Engineering, University of Houston, Houston, TX 77024, USA
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12
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Tingyuan P, Xiaorui L, Jia L, Qi S, Junren L, Ling H, Wenying S, Xiaoshun J, Meimei Z. Highly sensitive and accurate detection of cholesterol based on a single red upconversion biosensor. RSC Adv 2024; 14:7858-7866. [PMID: 38449817 PMCID: PMC10915588 DOI: 10.1039/d3ra07354h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 12/02/2023] [Indexed: 03/08/2024] Open
Abstract
Cholesterol (CHOL) is an important clinical biochemical indicator that plays an important role in the regulation of the fluidity, permeability, and microstructure of cell membranes. Therefore, it is necessary to accurately monitor CHOL levels in biological samples for the early prevention and diagnosis of various diseases. The single-band red upconversion nanoparticle (UCNP) emits light within the optical transmission window of biological tissues, and can penetrate deeper biological tissues and cause less energy loss due to scattering and thus have higher sensitivity and accuracy. Here, using the nontoxic, sensitive, and photochemically stable 3,3',5,5'-tetramethylbenzidine (TMB) as the quenching agent and single red UCNP as the fluorescent donor, a dual-readout colorimetric and fluorescent sensor was developed to detect CHOL. The detection mechanism and feasibility were discussed in detail, and experimental conditions such as Fe2+ concentration, TMB concentration and reaction time were explored. Under optimal conditions, the limits of CHOL detection by colorimetry and fluorescence were 0.85 μM and 0.63 μM. The sensing system was used to measure CHOL in serum samples and the values obtained by these two modes were close, and the spiked recoveries were 97.2-102.2% and 97.1-103.7%, respectively, which holds great potential in clinical diagnosis and health management.
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Affiliation(s)
- Pang Tingyuan
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Liu Xiaorui
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Li Jia
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Song Qi
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Li Junren
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Han Ling
- Integrated Traditional Chinese and Western Medicine Department (Internal Medicine Section 5), Affiliated Cancer Hospital & Institute of Guangzhou Medical University Guangzhou China
| | - Shu Wenying
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Jian Xiaoshun
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
| | - Zhang Meimei
- Department of Pharmacy, Affiliated Cancer Hospital, Institute of Guangzhou Medical University Guangzhou China
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13
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Liu MX, Chen XB, Liu WY, Wang JH, Yu YL, Chen S. Phosphorescence approach based on silica protected carbon dots for autofluorescence interference-free and highly selective detection of fluoride. Anal Chim Acta 2024; 1287:342102. [PMID: 38182345 DOI: 10.1016/j.aca.2023.342102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/19/2023] [Accepted: 11/30/2023] [Indexed: 01/07/2024]
Abstract
BACKGROUND Fluoride (F-), an anion with the smallest ionic radius and highest charge density, plays an important role in biomedical and environmental processes, making the development of accurate F- detection methods of great importance. Fluorometric methods with simplicity and sensitivity have gained considerable attention in F- detection. However, their accuracy faces challenges due to issues like autofluorescence interference during real-time light excitation and limited selectivity. Therefore, it is important to establish a simple, real-time light excitation-free, and highly selective method for the accurate determination of F- in complicated samples. RESULTS Herein, a novel phosphorescent approach is developed for the selective and accurate detection of F- in complex samples. Phosphorescence emission CDs@SiO2 is fabricated by confining CDs in a silica protective layer. This design retains the favorable water solubility of silica while benefitting from its inertness, making it resistant to most substances. Furthermore, phosphorescent analysis without real-time light excitation eliminates autofluorescence interference, significantly improving the signal-to-noise ratio (SNR) and simplifying sample pretreatment. The specific interaction between F- and the Si-O bond can lead to the degradation of the silica protective layer, exposing the CDs to the solution, resulting in phosphorescence quenching, achieving the highly accurate and sensitive detection of F- with a linear range of 0.001-4 mM and a limit of detection (LOD) of 1 μM. SIGNIFICANCE This novel F- phosphorescence method based on the metal-free phosphorescent nanomaterial CDs@SiO2 integrates the benefits of no autofluorescence interference, high selectivity, and full aqueous compatibility, and its combination with a smartphone provides a simple, portable, and cost-effective detection platform for accurate and highly sensitive determination of F- in complex samples.
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Affiliation(s)
- Meng-Xian Liu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Xiao-Bing Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Wen-Ye Liu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Yong-Liang Yu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
| | - Shuai Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
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14
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Shi SS, Li XJ, Ma RN, Shang L, Zhang W, Zhao HQ, Jia LP, Wang HS. A smartphone-based electrochemical POCT for CEA based on signal amplification of Zr 6MOFs. LAB ON A CHIP 2024; 24:367-374. [PMID: 38126214 DOI: 10.1039/d3lc00748k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Carcinoembryonic antigen (CEA) is a biomarker of high expression in cancer cells. Highly sensitive and selective detection of CEA holds significant clinical value in the diagnosis, monitoring and efficacy evaluation of malignant tumors. In this work, a smartphone-based electrochemical point-of-care testing (POCT) platform for the detection of CEA was developed based on a Zr6MOF signal amplification strategy. Ferrocene labeled DNA strands (Fc-DNA) were immobilized on Zr6MOFs to form a Fc-DNA/Zr6MOF signal probe. Double-stranded DNA (dsDNA) formed by complementary DNA (cDNA) and CEA aptamer was assembled on a screen-printed electrode via an Au-S bond. When CEA was added, the aptamer specifically bound with CEA, resulting in the exposure of cDNA. Then, Fc-DNA/Zr6MOF signal probes were introduced on the electrode surface through hybridization between Fc-DNA and cDNA. The detection of CEA was realized by measuring the electrochemical response of Fc. The POCT device was made by connecting a modified electrode with a smartphone through a Sensit Smart USB flash disk. Due to the signal amplification of Zr6MOFs, this POCT platform exhibited high sensitivity, wide linear range, and low detection limit for CEA detection. The developed POCT platform has been used for the detection of CEA in actual human serum samples with satisfactory results.
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Affiliation(s)
- Shan-Shan Shi
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
| | - Xiao-Jian Li
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
| | - Rong-Na Ma
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
| | - Lei Shang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
| | - Wei Zhang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
| | - Huai-Qing Zhao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong, 250022, P. R. China.
| | - Li-Ping Jia
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
| | - Huai-Sheng Wang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, P. R. China.
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15
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Li Y, Lu H, Xu S. The construction of dual-emissive ratiometric fluorescent probes based on fluorescent nanoparticles for the detection of metal ions and small molecules. Analyst 2024; 149:304-349. [PMID: 38051130 DOI: 10.1039/d3an01711g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
With the rapid development of fluorescent nanoparticles (FNPs), such as CDs, QDs, and MOFs, the construction of FNP-based probes has played a key role in improving chemical sensors. Ratiometric fluorescent probes exhibit distinct advantages, such as resistance to environmental interference and achieving visualization. Thus, FNP-based dual-emission ratiometric fluorescent probes (DRFPs) have rapidly developed in the field of metal ion and small molecule detection in the past few years. In this review, firstly we introduce the fluorescence sensing mechanisms; then, we focus on the strategies for the fabrication of DRFPs, including hybrid FNPs, single FNPs with intrinsic dual emission and target-induced new emission, and DRFPs based on auxiliary nanoparticles. In the section on hybrid FNPs, methods to assemble two types of FNPs, such as chemical bonding, electrostatic interaction, core satellite or core-shell structures, coordination, and encapsulation, are introduced. In the section on single FNPs with intrinsic dual emission, methods for the design of dual-emission CDs, QDs, and MOFs are discussed. Regarding target-induced new emission, sensitization, coordination, hydrogen bonding, and chemical reaction induced new emissions are discussed. Furthermore, in the section on DRFPs based on auxiliary nanoparticles, auxiliary nanomaterials with the inner filter effect and enzyme mimicking activity are discussed. Finally, the existing challenges and an outlook on the future of DRFP are presented. We sincerely hope that this review will contribute to the quick understanding and exploration of DRFPs by researchers.
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Affiliation(s)
- Yaxin Li
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, China
- Laboratory of Functional Polymers, School of Materials Science and Engineering, Linyi University, Linyi 276005, China.
| | - Hongzhi Lu
- Laboratory of Functional Polymers, School of Materials Science and Engineering, Linyi University, Linyi 276005, China.
| | - Shoufang Xu
- Laboratory of Functional Polymers, School of Materials Science and Engineering, Linyi University, Linyi 276005, China.
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16
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Liu Y, Wang M, Hui Y, Sun L, Hao Y, Ren H, Guo H, Yang W. Polyarylether-based COFs coordinated by Tb 3+ for the fluorescent detection of anthrax-biomarker dipicolinic acid. J Mater Chem B 2024; 12:466-474. [PMID: 38086684 DOI: 10.1039/d3tb02070c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
In this study, a rare-earth hybrid luminescent material (lanthanide@COF) was constructed for the detection of a biomarker for anthrax (dipicolinic acid, DPA). JCU-505-COOH was prepared by the hydrolysis of the cyano group in JCU-505 via a post-synthetic modification strategy, then the carboxyl groups in JCU-505-COOH coordinated with Tb3+ ions, similar to pincer vising nut. The prepared Tb3+@JCU-505-COOH exhibited a turn-on response toward DPA, which allowed the lanthanide@COF to serve as a fluorescence sensor with excellent selectivity and high sensitivity (binding constant Ka = 3.66 × 103). The fluorescent probe showed satisfactory performance for the determination of DPA in saliva and urine with a detection limit of 0.6 μM. Moreover, we established a facile point-of-care testing (POCT) using the Tb3+@JCU-505-COOH-based fluorescent test paper together with a smartphone for the initial diagnosis of anthrax. As expected, Tb3+@JCU-505-COOH showed great potential for the rapid screening of anthrax due to low cost, simple operation, and wide applicability.
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Affiliation(s)
- Yinsheng Liu
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Mingyue Wang
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Yinfei Hui
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Lei Sun
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Yanrui Hao
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Henlong Ren
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Hao Guo
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
| | - Wu Yang
- Key Laboratory of Eco-functional Polymer Materials of Ministry of Education, Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection of Ministry of Education, Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, Lanzhou 730070, PR China.
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17
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Ye S, Yu B, Ren T, Lin Y, Zhang J, Zheng C. Point-of-Care Platform Based on Solid-Phase Fluorescence Filter Effect for Urinary Iodine Testing in Children and Pregnant Women. Anal Chem 2023; 95:13949-13956. [PMID: 37659071 DOI: 10.1021/acs.analchem.3c02531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2023]
Abstract
Iodine is an essential element that is used to make thyroid hormones. However, people usually ignore their iodine nutrition level, thus leading to a series of thyroid diseases, particularly in areas where medical resources are scarce. Thus, development of a portable, economical, and simple method for the detection of urinary iodine is of significant importance. Herein, a solid-phase fluorescence filter effect (SPFFE) induced by iodine was used to develop an SPFFE-based point-of-care testing (POCT) platform for the detection of urinary iodine by coupling with headspace sample introduction. This method can not only alleviate the matrix interference that occurred in the conventional inner filter effect (IFE) but also achieve high sensitivity. Furthermore, the urinary iodine (UI) POCT platform was developed through the integration of a sample pretreatment and fluorescence readout. This whole system costs less than US $20 and provides accurate temperature control and a portable fluorescence reading within 15-20 min. Compared to the traditional IFE-based assay, the SPFFE-based POCT platform allows the selective detection of iodine as low as 10 nM and has a linear range of 0.05-4 μM. In addition, it provides notable visualization from blue-violet to orange-red in the presence of iodine, which tends to indicate the iodine nutritional status of the human body. Eventually, the clinical applicability and feasibility of the UIPOCT platform as an early diagnostic test kit were confirmed by determining the iodine in urine samples from children and pregnant women.
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Affiliation(s)
- Simin Ye
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Bo Yu
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 611731 , China
| | - Tian Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yao Lin
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Jinyi Zhang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Chengbin Zheng
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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18
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Zhao Y, Liu M, Zhou S, Yan Z, Tian J, Zhang Q, Yao Z. Smartphone-assisted ratiometric sensing platform for on-site tetracycline determination based on europium functionalized luminescent Zr-MOF. Food Chem 2023; 425:136449. [PMID: 37295213 DOI: 10.1016/j.foodchem.2023.136449] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/08/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023]
Abstract
Accurate on-site analysis of tetracycline (TC) is of great research value for ensuring food safety and estimating environmental pollution. Herein, a smartphone-based fluorescent platform for TC detectionhas been developed based on a europium functionalized metal-organic framework (Zr-MOF/Cit-Eu). Based on the inner filter and antenna effect between Zr-MOF/Cit-Eu and TC, the probe exhibited a ratiometric fluorescent response toward TC, resulting in an emission color change from blue to red. Excellent sensing performance was achieved with a detection limit of 3.9 nM, consistent with the linear operation spanning nearly four orders of magnitude. Subsequently, visual test strips based on Zr-MOF/Cit-Eu were prepared, possessing the potential for accurate testing of TC via RGB signals. Finally, the proposed platform was well applied in actual samples with satisfied recoveries (92.27 to 110.22%). This MOF-based on-site fluorescent platform holds great potential on constructing intelligent platform for visual and quantitative detection of organic contaminants.
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Affiliation(s)
- Yijian Zhao
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Meiyi Liu
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Shuai Zhou
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhiyu Yan
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jingsheng Tian
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Qiaojuan Zhang
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhiyi Yao
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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Nath P, Mahtaba KR, Ray A. Fluorescence-Based Portable Assays for Detection of Biological and Chemical Analytes. SENSORS (BASEL, SWITZERLAND) 2023; 23:s23115053. [PMID: 37299780 DOI: 10.3390/s23115053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/16/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Fluorescence-based detection techniques are part of an ever-expanding field and are widely used in biomedical and environmental research as a biosensing tool. These techniques have high sensitivity, selectivity, and a short response time, making them a valuable tool for developing bio-chemical assays. The endpoint of these assays is defined by changes in fluorescence signal, in terms of its intensity, lifetime, and/or shift in spectrum, which is monitored using readout devices such as microscopes, fluorometers, and cytometers. However, these devices are often bulky, expensive, and require supervision to operate, which makes them inaccessible in resource-limited settings. To address these issues, significant effort has been directed towards integrating fluorescence-based assays into miniature platforms based on papers, hydrogels, and microfluidic devices, and to couple these assays with portable readout devices like smartphones and wearable optical sensors, thereby enabling point-of-care detection of bio-chemical analytes. This review highlights some of the recently developed portable fluorescence-based assays by discussing the design of fluorescent sensor molecules, their sensing strategy, and the fabrication of point-of-care devices.
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Affiliation(s)
- Peuli Nath
- Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
| | - Kazi Ridita Mahtaba
- Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
| | - Aniruddha Ray
- Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
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20
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Wang C, Zhang Y, Liu C, Gou S, Hu S, Guo W. A portable colorimetric point-of-care testing platform for MicroRNA detection based on programmable entropy-driven dynamic DNA network modulated DNA-gold nanoparticle hybrid hydrogel film. Biosens Bioelectron 2023; 225:115073. [PMID: 36701948 DOI: 10.1016/j.bios.2023.115073] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/10/2023]
Abstract
Point-of-care testing (POCT) platforms for microRNA (miRNA) detection have attracted considerable attention in recent years, due to the increasingly important role of miRNA as biomarkers for the diagnosis of many diseases, such as cancers. However, several limitations such as the requirement of enzyme-related amplification system, expensive preservation cost, sophisticated analysis instruments and tedious operations of conventional miRNA biosensing devices severely hinder their widespread applications. In this work, a portable and smart colorimetric analysis platform was developed by employing the ultrathin DNA-gold nanoparticle (AuNP) hybrid hydrogel film as the signaling unit and the enzyme-free entropy-driven dynamic DNA network (EDN) as the signal converter and amplification unit. By programming the DNA sequences of the EDN, the EDN could respond to a specific miRNA, with miRNA-155 or miRNA-21 as the model target, and release a converter DNA with amplified concentration to further trigger the release of AuNPs from the hydrogel film as a colorimetric signal output. To avoid the use of sophisticated spectral instruments, digital analysis based on primary three-color channel (R/G/B) was further introduced by using user-friendly camera and image processing software, and a detection limit at pM level was achieved. Moreover, by introducing H2O2-mediated AuNPs enlargement procedure in the colorimetric analysis platform, the detection limit for miRNA target could further be enhanced to fM level. The POCT platform is also portable and storable with a good storage stability for at least 45 days, suggesting its great potential in practical diagnosis applications.
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Affiliation(s)
- Chunyan Wang
- Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Yaxing Zhang
- Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Chang Liu
- Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Siyu Gou
- Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Shanjin Hu
- Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, PR China
| | - Weiwei Guo
- Research Center for Analytical Sciences, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, PR China; Smart Sensing Interdisciplinary Science Center, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, PR China.
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21
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Zhang X, Sun B, Zhang Y, Zhang Q, Akhtar MH, Li M, Gu Y, Yu C. Portable smartphone-assisted ratiometric fluorescence sensor for visual detection of glucose. Anal Chim Acta 2023; 1260:341173. [PMID: 37121649 DOI: 10.1016/j.aca.2023.341173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/25/2023] [Accepted: 04/02/2023] [Indexed: 04/09/2023]
Abstract
Fluorescence-based visual assays have sparked tremendous attention in on-site detection due to their obvious color gradient changes and high sensitivity. In this study, a novel emission wavelength shift-based visual sensing platform is constructed to detect glucose based on the oxidation of Rhodamine B (RhB). MnO2 nanosheets (MnO2 NS) with strong oxidizing properties were introduced to oxidize RhB, which resulted in a blue shift in the emission wavelength, and a visual color changed of the fluorescence from orange-red to green. The oxidation reaction could be inhibited via reducing and destroying MnO2 NS by H2O2, which was produced by the oxidizing procedure of glucose in the presence of glucose oxidase (GOx). A series of wavelength shifts and fluorescence color variations appeared with the addition of various amounts of glucose. A ratiometric fluorescence glucose sensor with a lowest recorded concentration of 0.25 μM was developed. Meanwhile, test paper-based assays integrated with the smartphone platform were established for the sensing of glucose by means of the significant fluorescence color changes, offering a reliable, sensitive, and portable on-site assay of glucose.
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22
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Du W, Shen Z, Liang Y, Gong S, Meng Z, Li M, Wang Z, Wang S. A highly effective "naked eye" colorimetric and fluorimetric curcumin-based fluorescent sensor for specific and sensitive detection of H 2O 2in vivo and in vitro. Analyst 2023; 148:1824-1837. [PMID: 36939165 DOI: 10.1039/d3an00340j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Hydrogen peroxide (H2O2) is involved in many important tasks in normal cell metabolism and signaling. However, abnormal levels of H2O2 are associated with the occurrence of several diseases. Therefore, it is important to develop a new method for the detection of H2O2in vivo and in vitro. A turn-off sensor, 2,2-difluoro-4,6-bis(3-methoxy-4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)oxy)styryl)-2H-1,3,2-dioxaborine (DFCB), based on curcumin was developed for the detection of H2O2. The DFCB, an orange-emitting sensor, was constructed by employing 2,2-difluoro-4,6-bis(4-hydroxy-3-methoxystyryl)-2H-1,3,2-dioxaborine (DFC) as the main carrier, and 2-(4-bromomethylphenyl)-4,4,5,5-tetramethyl-1,3,2-doxaborolane as the recognition site. The recognition group on the DFCB sensor could be completely cleaved by H2O2 to generate the intermediate DFC, which would lead to a colorimetric change from bright orange to light blue accompanying by a significantly quenched fluorescence, which could be seen by the naked eye. This sensor exhibited a highly specific fluorescence response to H2O2, in preference to other relevant species, with an excellent anti-interference performance. The sensor DFCB also possessed some advantages including a wide pH response range (6-11), a broad linear range (0-300 μM), and a low detection limit (1.31 μM). The sensing mechanism of the DFCB sensor for H2O2 was verified by HRMS analysis, 1H-NMR titration and DFT calculations. In addition, the use of the DFCB sensor was compatible with the fluorescence imaging of H2O2 in living cells and zebrafish.
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Affiliation(s)
- Wenhao Du
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Zheyu Shen
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Yueying Liang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Shuai Gong
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Zhiyuan Meng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Mingxing Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Zhonglong Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
| | - Shifa Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry, University, Nanjing, 210037, China.
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Zhou Y, Ma L, Luo L, Xiang D, Wang Q, Luan Y, Huang J, Liu J, Yang X, Wang K. Portable detection of multiple mycotoxins based on a sonic toothbrush, microfluidic chip and smartphone. Chem Commun (Camb) 2023; 59:2907-2910. [PMID: 36806831 DOI: 10.1039/d2cc07047b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
A portable method for on-site detection of three mycotoxins was developed based on a sonic toothbrush, microfluidic chip and smartphone. Our method could complete all procedures, including sample pretreatment, signal conversion and processing, without any sophisticated instruments. The limits of detection for these mycotoxins were lower than the limit values in cereals in the standards of China and the European Union.
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Affiliation(s)
- Yuan Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Longping Ma
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Lei Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Dongliu Xiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Qing Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Yanan Luan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Jianbo Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Xiaohai Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China.
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Kaur A, Kumar M, Bhalla V. Enzyme-/metal-free quinoxaline assemblies: direct light-up detection of cholesterol in human serum. Chem Commun (Camb) 2023; 59:1501-1504. [PMID: 36655865 DOI: 10.1039/d2cc06357c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Supramolecular assemblies of quinoxaline derivative (QxPyA) have been developed for turn-on detection of cholesterol in human serum and in aqueous media with a detection limit of 4 nM.
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Affiliation(s)
- Amrit Kaur
- Departmentt of Chemistry, UGC Sponsored Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
| | - Manoj Kumar
- Departmentt of Chemistry, UGC Sponsored Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
| | - Vandana Bhalla
- Departmentt of Chemistry, UGC Sponsored Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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25
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One-pot synthesis of ternary-emission molecularly imprinted fluorescence sensor based on metal–organic framework for visual detection of chloramphenicol. Food Chem 2023; 402:134256. [DOI: 10.1016/j.foodchem.2022.134256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 09/02/2022] [Accepted: 09/11/2022] [Indexed: 11/20/2022]
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Shen Y, Wei Y, Gao X, Nie C, Wang J, Wu Y. Engineering an Enzymatic Cascade Catalytic Smartphone-Based Sensor for Onsite Visual Ratiometric Fluorescence-Colorimetric Dual-Mode Detection of Methyl Mercaptan. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:1680-1691. [PMID: 36642941 DOI: 10.1021/acs.est.2c07899] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Precise and reliable onsite detection of methyl mercaptan (CH3SH) is of great significance for environmental surveillance. Here, we synthesized a novel blue fluorescence nanozyme CeO2@TPE with high peroxidase-like activity by employing aggregation-induced emission (AIE) tetraphenylethene (TPE) to embed into hollow CeO2 nanospheres. In the presence of ethanol oxidase (AOX) and o-phenylenediamine (OPD), we engineered an enzymatic cascade activation ratiometric fluorescence-colorimetric dual-mode system AOX/CeO2@TPE + OPD toward CH3SH. In this design, CH3SH initiated AOX catalytic activity to convert it into H2O2 for activating the peroxidase-like activity of CeO2@TPE, producing •OH for oxidizing the naked-eye colorless OPD into deep yellow 2,3-diaminophenazine (DAP) with an absorption enhancement at ∼425 nm, companied by a new emission peak at ∼550 nm to match with the intrinsic emission at ∼441 nm for observing ratiometric fluorescence response, enabling a ratiometric fluorescence-colorimetric dual-mode analysis. Interestingly, both the ratiometric fluorescence and colorimetric signals could be gathered for being converted into the hue parameter on a smartphone-based sensor, achieving the onsite visual fluorescence-colorimetric dual-mode detection of CH3SH in real environmental media with acceptable results. This study gave a novel insight into designing target-responsive enzymatic cascade activation system-based efficient and reliable dual-mode point-of-care sensors for safeguarding environmental health.
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Affiliation(s)
- Yizhong Shen
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei230009, China
| | - Yunlong Wei
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei230009, China
| | - Xiang Gao
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei230009, China
| | - Chao Nie
- Engineering Research Center of Bio-Process, Ministry of Education, School of Food & Biological Engineering, Hefei University of Technology, Hefei230009, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Yangling712100, China
| | - Yongning Wu
- Research Unit of Food Safety, Chinese Academy of Medical Sciences (No. 2019RU014), NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment (CFSA), Beijing100022, China
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Cui X, Lei T, Zhang J, Chen Z, Luo H, Chen H, He Y, Song G. Smartphone-assisted miniature device based on nitrogen and sulfur co-doped carbon dots for point-of-care testing of tetracycline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121727. [PMID: 35998426 DOI: 10.1016/j.saa.2022.121727] [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: 05/10/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
A miniature device was design for the point-of-care testing (POCT) of tetracycline (TC) including a ratio fluorescence test strip, a sample slot, a UV lamp and a smartphone. The nitrogen and sulfur co-doped carbon dots (N, S-CDs) and Eu3+ were dropped onto the filter paper to construct the ratio fluorescence test strips for the specific detection of TC. Under the excitation at 390 nm, the fluorescence emission of N, S-CDs at 530 nm decreases through inner filter effect (IEF) after addition of Eu3+. When the further addition of TC, the emission of N, S-CDs at 530 nm kept unchanged while the emission of Eu3+ at 616 nm was obviously enhanced for the antenna effect (AE) between Eu3+ and TC. The ratio changes of the two-fluorescence emission realized the quantitative detection of TC. In addition, the test strips with different concentrations of TC showed different fluorescence color from green to red under a 365 nm UV lamp. The miniature device was designed as a fluorescence photo reader with the merits of the powerful functions of smartphones and the portability of test strips. The smartphone camera takes a fluorescent color image of the test strips and the photos are recognized by a color recognizer on the smartphone to obtain RGB (red-greenblue) values which reflect the concentrations of the analytes. Therefore, we established a fast, sensitive and efficient POCT of TC. In particular, the proposed nanomaterial-based POCT platform will open a new route towards the development of ratio fluorescence probe for TC analysis for environment samples.
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Affiliation(s)
- Xipeng Cui
- 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
| | - 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
| | - Juan Zhang
- Hubei Light Industry Institute of Research & Design Co., Ltd, No. 1 Yangsigang Road, Hanyang District 430052, Wuhan, Hubei, China
| | - Zifan Chen
- Hubei Light Industry Institute of Research & Design Co., Ltd, No. 1 Yangsigang Road, Hanyang District 430052, Wuhan, Hubei, China
| | - Hong Luo
- Hubei Light Industry Institute of Research & Design Co., Ltd, No. 1 Yangsigang Road, Hanyang District 430052, Wuhan, Hubei, China
| | - Hui Chen
- Hubei Light Industry Institute of Research & Design Co., Ltd, No. 1 Yangsigang Road, Hanyang District 430052, Wuhan, Hubei, 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
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Tang S, Wu X, Zhao P, Tang K, Chen Y, Fu J, Lei H, Yang Z, Zhang Z. Ratiometric Fluorescence Capillary Sensor-Integrated Molecular Imprinting for Simultaneous Detection of Two Biological Indicators of Parkinson's Disease. Anal Chem 2022; 94:17223-17231. [PMID: 36449628 DOI: 10.1021/acs.analchem.2c03926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
This work proposed ratiometric fluorescence capillary sensing system-integrated molecular imprinting with highly sensitive and selective detection for two biological indicators of Parkinson's disease (homovanillic acid (HVA) and Al3+). In this research, the silicon carbon quantum dot and the near-infrared CdTe quantum dot as luminescence sources were doped to an imprinted layer, which was attached to the inner surface wall of an amino-functionalized capillary. The fluorescence emissions of the ratiometric fluorescence capillary-imprinted sensor at 434 and 707 nm were quenched by HVA, and only the fluorescence emission at 434 nm was quenched by Al3+. Ratiometric fluorescence capillary sensing system-integrated molecular imprinting was used to detect simultaneously HVA and Al3+ with linearity over 1.0 × 10-9-2.5 × 10-7 and 1.0 × 10-9-1.1 × 10-7 M, respectively. The sensor showcased detection limitations of 8.7 × 10-10 and 9.8 × 10-10 M, indicating that the ratiometric fluorescence capillary sensing system-integrated molecular imprinting had great potential application for detecting HVA and Al3+ in serum and urine samples. The ratiometric fluorescence capillary sensing system-integrated molecular imprinting achieved highly sensitive and selective detection of HVA and Al3+ with a microvolume test dosage of 18 μL, which provided a new way for early diagnosis and disease monitoring of Parkinson's disease.
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Affiliation(s)
- Sisi Tang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Xiaodan Wu
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Pengfei Zhao
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Kangling Tang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Yu Chen
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Jinli Fu
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Huibin Lei
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Zhaoxia Yang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China
| | - Zhaohui Zhang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou, Hunan 416000, China.,School of Pharmaceutical Sciences, Jishou University, Jishou, Hunan 416000, P.R. China.,State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, P.R. China
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29
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Xing G, Ai J, Wang N, Pu Q. Recent progress of smartphone-assisted microfluidic sensors for point of care testing. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116792] [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]
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30
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Smartphone assisted fluorescent sensor for Fe3+ and ascorbic acid determination based on off-on carbon dots probe. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1016/j.cjac.2022.100206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Ding C, Chen X, Chen X, Liu Y, Xia M, He Z, Kang Q, Yan X. Point-of-care testing for lysine concentration in swine serum via blue-emissive carbon dot-entrapped microfluidic chip. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2022; 12:236-244. [PMID: 36712405 PMCID: PMC9868343 DOI: 10.1016/j.aninu.2022.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/16/2022] [Accepted: 08/13/2022] [Indexed: 01/19/2023]
Abstract
Lysine is one of the essential amino acids and plays a vital role in the growth, development and health of pigs. Blood lysine concentration is a direct indication of lysine status; however, current methods can not satisfy the demands for rapid and on-site lysine concentration measurement of swine serum. Here, we developed blue-emissive nitrogen-doped carbon dots as a fluorescence probe for the determination of lysine with high fluorescence quantum yield, stability, sensitivity and specificity. The carbon dots were entrapped within hydrogel microstructures to fabricate microfluidic chips for rapid assay for lysine quantification. We further developed an imaging attachment to integrate the microfluidic chip and a smartphone into a portable point-of-care testing platform. This platform requires only 3 μL sample and has a linear detection range of 25 to 300 μmol/L with a limit of detection less than 16 μmol/L, which covers the normal range of lysine concentration in swine serum. We tested lysine concentration in swine serum using this platform with high accuracy, low sample consumption, and within 3 min. Together, these results may provide a rapid and portable platform for dynamic monitoring of swine lysine status and contribute to precise feed formula modulation with low-protein diet strategy.
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Wu Y, Zhou J, Jiang Y, Li W, He M, Xiao Y, Chen J. Silver Nanoparticles@Metal-Organic Framework as Peroxidase Mimics for Colorimetric Determination of Hydrogen Peroxide and Blood Glucose. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1016/j.cjac.2022.100187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Huang L, Zeng R, Xu J, Tang D. Point-of-Care Immunoassay Based on a Multipixel Dual-Channel Pressure Sensor Array with Visual Sensing Capability of Full-Color Switching and Reliable Electrical Signals. Anal Chem 2022; 94:13278-13286. [PMID: 36097964 DOI: 10.1021/acs.analchem.2c03393] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The point-of-care (POC) method with affordability and portability for the sensitive detection of biological substances is an emerging topic in rapid disease screening and personalized medicine. In this work, we demonstrated a diverse responsive platform based on a dual-channel pressure sensor (DCPS). The DCPS had a multilayer flexible architecture consisting of a photonic hydrogel with chromatic transitions and a piezoresistive pressure sensor as the electrical data transmission unit, both of which had the property of pressure-induced mechanical stimulus feedback. By incorporating a platinum nanoparticles-labeled detection antibody (PtNPs-dAb) into the sandwich-type immunoreaction for the target carcinoembryonic antigen (CEA, as a model analyte), gas decomposition could be triggered by the addition of hydrogen peroxide (H2O2) to induce a significant increase under pressure in a closed chamber. Meanwhile, the DCPS enabled an accurate electrical signal output, and the photonic hydrogel converted spatiotemporal stimuli into eye-readable colorations with string brilliance. In this way, the target concentration could be quantificationally related to the electrical response and intuitively perceived through visible color alterations. Under optimal conditions, a sensitive determination of CEA was performed in a detectable range of 0.3-60 ng/mL with a limit of detection (LOD) of 0.13 ng/mL. In addition, the proposed protocol had satisfactory selectivity, accuracy, and reproducibility. Furthermore, an array-based immunoassay device was fabricated to conceptually validate its application potential in high-throughput biomedical detection and inspire a dual-signal POC diagnostic platform in a friendly way for resource-limited settings.
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Affiliation(s)
- Lingting Huang
- Key Laboratory for Analytical Science of Food Safety and Biology (MOE & Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Ruijin Zeng
- Key Laboratory for Analytical Science of Food Safety and Biology (MOE & Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Jianhui Xu
- Key Laboratory for Analytical Science of Food Safety and Biology (MOE & Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Dianping Tang
- Key Laboratory for Analytical Science of Food Safety and Biology (MOE & Fujian Province), Department of Chemistry, Fuzhou University, Fuzhou 350108, People's Republic of China
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Wells PK, Melman A, Katz E, Smutok O. Fluorescent sensor based on pyrroloquinoline quinone (PQQ)-glucose dehydrogenase for glucose detection with smartphone-adapted signal analysis. Mikrochim Acta 2022; 189:371. [PMID: 36064809 DOI: 10.1007/s00604-022-05466-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 08/18/2022] [Indexed: 11/26/2022]
Abstract
A new nano-structured platform for fluorescent analysis using PQQ-dependent glucose dehydrogenase (PQQ-GDH) was developed, particularly using a smartphone for transduction and quantification of optical signals. The PQQ-GDH enzyme was immobilized on SiO2 nanoparticles deposited on glass microfiber filter paper, providing a high load of the biocatalytic enzyme. The platform was tested and optimized for glucose determination using a wild type of the PQQ-GDH enzyme. The analysis was based on the fluorescence generated by the reduced form of phenazine methosulfate produced stoichiometrically to the glucose concentration. The fluorescent signals were generated at separate analytical spots on the paper support under wavelength (365 nm) UV excitation. The images of the analytical spots, dependent on the glucose concentration, were obtained using a photo camera of a standard smartphone. Then, the images were processed and quantified using software installed in a smartphone. The developed biocatalytic platform is the first step to assembling a large variety of biosensors using the same platform functionalized with artificial allosteric chimeric PQQ-dependent glucose dehydrogenase activated with different analytes. The future combination of the artificial enzymes, the presently developed analytical platform, and signal processing with a smartphone will lead to novel point-of-care and end-user biosensors applicable to virtually all possible analytes.
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Affiliation(s)
- Paulina K Wells
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA
| | - Artem Melman
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA.
| | - Oleh Smutok
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, USA.
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Ju J, Li L, Regmi S, Zhang X, Tang S. Microneedle-Based Glucose Sensor Platform: From Vitro to Wearable Point-of-Care Testing Systems. BIOSENSORS 2022; 12:bios12080606. [PMID: 36005002 PMCID: PMC9405967 DOI: 10.3390/bios12080606] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 11/21/2022]
Abstract
Significant advanced have recently been made in exploiting microneedle-based (MN-based) diabetes devices for minimally invasive wearable biosensors and for continuous glucose monitoring. Within this emerging class of skin-worn MN-based sensors, the ISF can be utilized as a rich biomarker source to diagnose diabetes. While initial work of MN devices focused on ISF extraction, the recent research trend has been oriented toward developing in vivo glucose sensors coupled with optical or electrochemical (EC) instrumentation. This outlook highlights the essential characteristics of the sensing mechanisms, rational design, sensing properties, and applications. Finally, we describe the opinions about the challenge and prospects of optical and EC MN-based device platforms for the fabrication of wearable biosensors and their application potential in the future.
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Affiliation(s)
- Jian Ju
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Oujiang Lab, Wenzhou 325001, China
- Correspondence: (J.J.); (S.T.)
| | - Lin Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325035, China
| | - Sagar Regmi
- Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Xinyu Zhang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Shixing Tang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
- Department of Epidemiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
- Correspondence: (J.J.); (S.T.)
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Zhai Y, Li Y, Huang X, Hou J, Li H, Ai S. Colorimetric and ratiometric fluorescent dual-mode sensitive detection of Hg 2+ based on UiO-66-NH 2@Au composite. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 275:121187. [PMID: 35366526 DOI: 10.1016/j.saa.2022.121187] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
A colorimetric and ratiometric fluorescent dual-mode assay is constructed for sensitive and specific Hg2+ sensing based on UiO-66-NH2 and Au composite (UiO-66-NH2@Au). The addition of Hg2+ stimulates the peroxidase-like activity of UiO-66-NH2@Au by the formation of Au-Hg amalgam, promoting the oxidizing of chromogenic substrate OPD to DAP with the aid of H2O2, which lead to the change of colorimetric and fluorescent signals. The absorbance of the sensing system at 450 nm is linear positive correlation with Hg2+ concentration of 30-1400 nM and the color of the solution under visible light shaded from light yellow to dark yellow. With the increase of Hg2+ concentration, the fluorescence signal at 570 nm (DAP) increased whereas that at 455 nm (intrinsic fluorescence of UiO-66-NH2) decreased due to inner filter effect (IFE), the fluorescence intensity ratio (F455/F570) decreasing linearly with Log [Hg2+] over the range 60-1700 nM; the fluorescence emission of sensing system under UV excitation changed from blue to yellow, which can easily be discerned visually. This assay was successfully applied to the determination of Hg2+ in tap water and river water. The results indicate that the colorimetric and ratiometric fluorescent dual-mode assay based on UiO-66-NH2@Au realized visual determination of Hg2+ rapidly and reliably, revealed application prospect in Hg2+ monitoring.
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Affiliation(s)
- Yuzhu Zhai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Yijing Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, PR China.
| | - Xiaoke Huang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, PR China
| | - Juying Hou
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, PR China
| | - Houshen Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, PR China.
| | - Shiyun Ai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, PR China.
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Chen X, Wang X, Fang Y, Zhang L, Zhao M, Liu Y. Long-Lasting Chemiluminescence-Based POCT for Portable and Visual Pathogenic Detection and In Situ Inactivation. Anal Chem 2022; 94:8382-8391. [PMID: 35647701 DOI: 10.1021/acs.analchem.2c00877] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bacterial infections seriously threaten human health and also bring huge financial burden. It is critical to construct multifunctional platforms for effectively inactivating bacteria right after point-of-care testing (POCT). Chemiluminescence (CL) bioassays are considered as powerful candidates for POCT as they are free from using an excitation light source, while the flash-type emission limits their further application. Herein, a CL system with long, persistent, and intensive intensity was constructed based on the peroxidase-like property of 4-mercaptophenylboronic acid (MPBA)-functionalized CuSe nanoprobes (CuSeNPs@MPBA), which improved the detection accuracy and sensitivity. By further integrating a smartphone as an analyzer, quantitative POCT of bacteria was realized with high sensitivity. The limit of detection was as low as 1.25 and 1.01 cfu mL-1 for Staphylococcus aureus and Escherichia coli detection, respectively. Specifically, bacteria can be eliminated with high efficiency due to excellent photothermal property of CuSeNPs@MPBA. The developed multifunctional platform also has advantages of simple operation with low cost, suggesting its high potential for use in food safety, environment monitoring, and clinical applications.
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Affiliation(s)
- Xiying Chen
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Xiaomin Wang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, P. R. China
| | - Yuan Fang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Liule Zhang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Minyang Zhao
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Yaqing Liu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
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Ratiometric Fluorescence Probe of Vesicle-like Carbon Dots and Gold Clusters for Quantitation of Cholesterol. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10050160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We report a facile method for the preparation of vesicle-like carbon dots (VCDs) via dry-heating of surfactant solutions. Like most reported CDs, the VCDs possess interesting fluorescence properties. Entrapment of enzymes and gold nanoclusters (AuNCs) inside the VCDs allows for the development of fluorescent probes for the quantitation of various substrates, with the advantages of high sensitivity and selectivity. The AuNCs act as a probe, and the VCDs as an internal standard confine the AuNCs, enzyme, and analyte to provide high local concentrations to enhance the assay sensitivity. In this study, we employed cholesterol oxidase (ChOX) as a model enzyme for the quantitation of cholesterol. The as-formed hydrogen peroxide through the enzyme reaction inside the VCDs causes fluorescence quenching of AuNCs (excitation/emission wavelengths of 320/670 nm), but not that of the VCDs (excitation/emission wavelengths of 320/400 nm). To improve the sensitivity and linearity, the fluorescence ratios of AuNCs/VCDs are plotted against analyte concentration. The present ratiometric fluorescent method allows for the detection of hydrogen peroxide over the concentration range of 1–100 μM, with a detection limit of 0.673 μM, and cholesterol concentrations ranging from 5 to 100 μM, with a detection limit of 2.8 μM. The practicality of this fluorescent method has been further validated by evaluating cholesterol levels in human serum samples with sufficient accuracy and recovery, revealing its great prospective in diagnosis and biomedical applications.
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Zhang L, Gao X, Chen X, Zhao M, Wu H, Liu Y. A smartphone integrated ratiometric fluorescent sensor for point-of-care testing of fluoride ions. Anal Bioanal Chem 2022; 414:3999-4009. [DOI: 10.1007/s00216-022-04046-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 11/24/2022]
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Zhai Y, Li Y, Hou Q, Zhang Y, Zhou E, Li H, Ai S. Highly sensitive colorimetric detection and effective adsorption of phosphate based on MOF-808(Zr/Ce). NEW J CHEM 2022. [DOI: 10.1039/d2nj00640e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MOF-808(Zr/Ce) has been successfully used for the sensitive and rapid detection of phosphate and phosphate removal by effective adsorption.
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Affiliation(s)
- Yuzhu Zhai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
| | - Yijing Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
| | - Qin Hou
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
| | - Yuanhong Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
| | - Enlong Zhou
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
| | - Houshen Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
| | - Shiyun Ai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong, 271018, P. R. China
- Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian, Shandong 271018, P. R. China
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Dou J, Shen Q, Yang Y, Song H, Shen D. A smartphone-based device for simultaneous measurement of ratiometric fluorescence and absorbance demonstrated by the determination of hypochlorous acid. NEW J CHEM 2022. [DOI: 10.1039/d2nj03106j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ratiometric fluorescence and absorbance are measured simultaneously by a smartphone-based device according to the corrected brightness ratio in a picture.
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Affiliation(s)
- Jianzhi Dou
- School of Applied Chemistry, Food and Drug, Weifang Engineering Vocational College, Qingzhou 262500, P. R. China
| | - Qirui Shen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Yan Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Haiyan Song
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
| | - Dazhong Shen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, P. R. China
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