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Pokhvishcheva NV, Prozherin IS, Kalinichev AV, Peshkova MA. Response Patterns of Chromoionophore-Based Bulk Optodes Containing Lipophilic Electrolytes: Toward Background-Independent pH-Sensing. ACS Sens 2023; 8:3086-3094. [PMID: 37524060 DOI: 10.1021/acssensors.3c00742] [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] [Indexed: 08/02/2023]
Abstract
Despite a number of advantages of ion-selective optical sensors (optodes), their practical application is limited by their response mechanism, which leads to the dependence of the signal on the activity of two ions (analyte ion and the so-called reference ion) in the solution at the same time. Here, we show that the introduction of a lipophilic electrolyte into the polymeric optode membrane allows assessing the ionic activity of H+ cations regardless of the concentration of the background electrolyte containing a hydrophilic cation, with NaCl as an example of such an electrolyte. For the first time, the applicability of this approach is proven theoretically utilizing the numerical simulation of optode response. A correlation between the interfacial potential stability and the single-ion optical response is established. The predicted optical response is independent of background cation concentration to a significant extent. Theoretical conclusions are supported by experimental data obtained with chromoionophore-based optodes doped with various lipophilic electrolytes, including ionic liquids, by thin-film spectrophotometry and macrophotography coupled with digital color analysis. Most of the experimental sensor characteristics, such as the response range and its median, as well as its independence from the background electrolyte concentration are in quantitative agreement with the proposed theoretical description.
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Affiliation(s)
- Nadezhda V Pokhvishcheva
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
| | - Ilya S Prozherin
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
| | - Andrey V Kalinichev
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
| | - Maria A Peshkova
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Emb., 199034 St. Petersburg, Russia
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Du X, Li N, Chen Q, Wu Z, Zhai J, Xie X. Perspective on fluorescence cell imaging with ionophore-based ion-selective nano-optodes. BIOMICROFLUIDICS 2022; 16:031301. [PMID: 35698631 PMCID: PMC9188459 DOI: 10.1063/5.0090599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
Inorganic ions are ubiquitous in all kinds of cells with highly dynamic spatial and temporal distribution. Taking advantage of different types of fluorescent probes, fluorescence microscopic imaging and quantitative analysis of ion concentrations in cells have rapidly advanced. A family of fluorescent nanoprobes based on ionophores has emerged in recent years with the potential to establish a unique platform for the analysis of common biological ions including Na+, K+, Ca2+, Cl-, and so on. This article aims at providing a retrospect and outlook of ionophore-based ion-selective nanoprobes and the applications in cell imaging.
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Affiliation(s)
- Xinfeng Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Niping Li
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qinghan Chen
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zeying Wu
- School of Chemical Engineering and Material Science, Changzhou Institute of Technology, Changzhou 213032, China
| | - Jingying Zhai
- Authors to whom correspondence should be addressed:; ; and
| | - Xiaojiang Xie
- Authors to whom correspondence should be addressed:; ; and
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Chen H, Peng J, Yu L, Chen H, Sun M, Sun Z, Ni R, Alamry KA, Marwani HM, Wang S. Calcium Ions Turn on the Fluorescence of Oxytetracycline for Sensitive and Selective Detection. J Fluoresc 2020; 30:463-470. [PMID: 32140947 DOI: 10.1007/s10895-020-02512-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/14/2020] [Indexed: 11/28/2022]
Abstract
Herein, we report an interesting finding about the new application of oxytetracycline (OTC), as a fluorescent probe for the detection of calcium ion (Ca2+), which proved that it can offer an expeditious, highly sensitive, and selective detection method for Ca2+. Upon the addition of Ca2+, the fluorescence of OTC could be significantly enhanced with rapid response and high sensitivity, and achieved a good limit of detection as low as 125 nM in aqueous solution. The complex formed via Ca2+ coordinating to the hydroxyl group of OTC contributes to the fluorescence enhancement, which has been proved by several characterization methods including UV-vis analysis, binding constant determination, and fluorescence titration. The method avoided complexity for EDTA measurement of Ca2+ in running water as proposed previously. Taking advantage of good availability, stability and operability, the OTC was further successfully applied to the detection of Ca2+ in a real environment. Graphical Abstract.
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Affiliation(s)
- Hongxia Chen
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Junxiang Peng
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Long Yu
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Hui Chen
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Mingtai Sun
- Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, People's Republic of China. .,National University of Singapore (Suzhou) Research Institute, 377 Linquan Street, Suzhou, Jiangsu, 215123, People's Republic of China.
| | - Zhenli Sun
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China
| | - Runyan Ni
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China. .,Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, People's Republic of China. .,National University of Singapore (Suzhou) Research Institute, 377 Linquan Street, Suzhou, Jiangsu, 215123, People's Republic of China.
| | - Khalid A Alamry
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Hadi M Marwani
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Suhua Wang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, People's Republic of China. .,College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China. .,Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, People's Republic of China. .,Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
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Affiliation(s)
- Li Deng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jingying Zhai
- SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
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Wang R, Du X, Zhai J, Xie X. Distance and Color Change Based Hydrogel Sensor for Visual Quantitative Determination of Buffer Concentrations. ACS Sens 2019; 4:1017-1022. [PMID: 30895782 DOI: 10.1021/acssensors.9b00186] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We present here an innovative platform for the determination of pH buffer capacity based on FITC-dextran loaded hydrogels. Optical signals from the pH-sensitive hydrogels were analyzed by simple parameters including distance and color change. The methodology was validated on five different buffer systems and exhibited wide linearity (0.1 to 100 mM), good batch-to-batch reproducibility, high versatility, and resistance to background ionic strength changes. Experimental results also fit well with a theoretical model based on numerical simulation. Preliminary application in carbonate alkalinity determination of seawater proved very successful. This hydrogel buffer concentration sensor is fundamentally different from conventional acid-base titrations, brings minimum perturbation to samples, and shows great potential in real applications.
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Affiliation(s)
- Renjie Wang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xinfeng Du
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jingying Zhai
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
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Du X, Huang M, Wang R, Zhai J, Xie X. A rapid point-of-care optical ion sensing platform based on target-induced dye release from smart hydrogels. Chem Commun (Camb) 2019; 55:1774-1777. [DOI: 10.1039/c8cc09434a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We report here a rapid and versatile metal ion analytical platform based on the dye release from hydrogels entrapping ion-selective microdroplets.
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Affiliation(s)
- Xinfeng Du
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Manling Huang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Renjie Wang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Jingying Zhai
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Xiaojiang Xie
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
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