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Shrivastava KC, Kumar KSA, Sengupta A, Ali SM, Ramkumar J. Reversible Hydrophobic Deep Eutectic Solvent-Based Uranyl-Sensing Optode Film in Aqueous Streams: Color Transformation and Reusability. Anal Chem 2024; 96:12658-12666. [PMID: 39041178 DOI: 10.1021/acs.analchem.4c01357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
A hydrophobic deep eutectic solvent (HDES)-based optode was designed for the preconcentration and determination of the UO22+ ion in aqueous media using spectroscopic techniques [energy-dispersive X-ray fluorescence (EDXRF) and solid-state absorption]. The optode was developed by incorporation of HDES (tri-n-octyl phosphine oxide and decanoic acid in an equimolar ratio), tri-(2-ethylhexyl) phosphate, and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol into a cellulose triacetate matrix. Characterization studies were carried out using different techniques to understand the roles of HDES as a plasticizer, UO22+ extractant, and Br-PADAP immobilizer. Uptake studies revealed that the optimal pH was 3 and sorption followed the type II adsorption isotherm. Uranium in the U-sorbed optode can be directly analyzed over a large concentration range of 0.021 × 10-3-2.1 × 10-3 Mol L-1 using EDXRF. The optode film exhibited a linear dynamic range of 0.84 × 10-6-84 × 10-6 Mol L-1 for uranium, with a lowest limit of detection of 0.084 × 10-6 Mol L-1 by colorimetric analysis. This optode-based method was employed for seawater analysis for its UO22+ concentration without any matrix separation, and the concentration was found to be 1.30 ± 0.06 × 10-8 Mol L-1. The optode exhibited better selectivity for UO22+ in the presence of various cations including Sr2+ and Cs+ in an aqueous medium. Compared to other prevailing optical sensors, this optode performed better in terms of key factors like pH, equilibration time, reusability, and detection limit.
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Affiliation(s)
- Komal C Shrivastava
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - K S Ajish Kumar
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Arijit Sengupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Sheikh Musharaf Ali
- Chemical Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Mumbai 400094, India
| | - Jayshree Ramkumar
- Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Mumbai 400094, India
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2
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Iwamoto S, Sueyoshi K, Endo T, Hisamoto H. Fundamental investigation on fluorous nanoemulsion optodes: effect of matrix fluorination on selectivity. ANAL SCI 2024:10.1007/s44211-024-00603-w. [PMID: 38795277 DOI: 10.1007/s44211-024-00603-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 05/16/2024] [Indexed: 05/27/2024]
Abstract
As fundamental investigation on fluorous nanoemulsion (NE) optodes for highly selective perfluorooctanesulfonate (PFOS-) sensing, the effect of matrix fluorination on selectivity was investigated. Due to the high hydrophobicity of PFOS- itself, it responded in exhaustive mode regardless of the fluorination ratio of the matrix, and the lowest detectable PFOS- concentration was on the order of 10-7 to 10-6 M. On the other hand, the response of non-fluorous interfering anions was suppressed as the fluorination ratio of the matrix increased. It was revealed that the relative selectivity of PFOS- for hydrophobic anions, ClO4-, SCN-, and 1-octanesulfonate (OS-) was improved by more than one order of magnitude, up to nearly two orders of magnitude, and that it was also improved by less than one order of magnitude for hydrophilic anions, Br-, Cl-, and SO4-, in logarithmic selectivity coefficient (log K PFOS - , j opt ).
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Affiliation(s)
- Soraka Iwamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuencho, Nakaku, Sakai, Osaka, 599-8531, Japan
| | - Kenji Sueyoshi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuencho, Nakaku, Sakai, Osaka, 599-8531, Japan
- Department of Chemistry, School of Science, Kitasato University, 1-15-1 Kitasato, Minamiku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Tatsuro Endo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuencho, Nakaku, Sakai, Osaka, 599-8531, Japan
| | - Hideaki Hisamoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuencho, Nakaku, Sakai, Osaka, 599-8531, Japan.
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3
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Ghanbari Ghalehjoughi N, Wang R, Kelley S, Wang X. Ultrasensitive Ionophore-Based Liquid Sensors for Colorimetric Ion Measurements in Blood. Anal Chem 2023; 95:12557-12564. [PMID: 37567148 DOI: 10.1021/acs.analchem.3c02926] [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: 08/13/2023]
Abstract
The self-monitoring of electrolytes using a small volume of capillary blood is needed for the management of many chronic diseases. Herein, we report an ionophore-based colorimetric sensor for electrolyte measurements in a few microliters of blood. The sensor is a pipet microtip preloaded with a segment of oil (plasticizer) containing a pH-sensitive chromoionophore, a cation exchanger, and an ionophore. The analyte is extracted from the sample into the oil via a mixing protocol controlled by a stepper motor. The oil with an optimized ratio of sensing chemicals shows an unprecedentedly large color response for electrolytes in a very narrow concentration range that is clinically relevant. This ultrahigh sensitivity is based on an exhaustive response mode with a novel mechanism for defining the lower and higher limits of detection. Compared to previous optodes and molecular probes for ions, the proposed platform is especially suitable for at-home blood electrolyte measurements because (1) the oil sensor is interrogated independent of the sample and therefore works for whole blood without requiring plasma separation; (2) the sensor does not need individual calibration as the consistency between liquid sensors is high compared to solid sensors, such as ion-selective electrodes and optodes; and (3) the sensing system consisting of a disposable oil sensor, a programmed stepper motor, and a smartphone is portable, cost-effective, and user-friendly. The accuracy and precision of Ca2+ sensors are validated in 51 blood samples with varying concentrations of total plasma Ca2+. Oil sensors with an ultrasensitive response can also be obtained for other ions, such as K+.
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Affiliation(s)
- Nasrin Ghanbari Ghalehjoughi
- Department of Chemistry, Virginia Commonwealth University, 1001 W. Main Street, Richmond, Virginia 23284, United States
| | - Renjie Wang
- Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431, United States
| | - Savannah Kelley
- Department of Chemistry, Virginia Commonwealth University, 1001 W. Main Street, Richmond, Virginia 23284, United States
| | - Xuewei Wang
- Department of Chemistry, Virginia Commonwealth University, 1001 W. Main Street, Richmond, Virginia 23284, United States
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4
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Nussbaum R, Robinson KJ, Soda Y, Bakker E. Optical Detection of Heparin in Whole Blood Samples Using Nanosensors Embedded in an Agarose Hydrogel. ACS Sens 2022; 7:3956-3962. [PMID: 36459400 DOI: 10.1021/acssensors.2c02154] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Point-of-care quantification of the anticoagulant heparin still remains a significant clinical challenge as the reference method (colorimetric anti-factor Xa assay) cannot be performed in whole blood. Our group recently put forth the novel optical nanosensing principle using an ionic solvatochromic dye as a signal transducer. These nanosensors demonstrated significantly improved selectivity and sensitivity compared to ion-exchange-type polyion nanosensors and enabled protamine/heparin quantification in blood plasma samples. However, because the readout is absorbance-based, they are still not suitable for whole blood measurements. To overcome the background absorbance of blood, the nanosensors were here embedded in an agarose hydrogel capable of filtering out red blood cells while allowing plasma components to diffuse into the gel. Calibration curves for both protamine and heparin were successfully obtained in buffer, undiluted plasma, and undiluted whole blood using different colorimetric image analysis methods and a simple experimental setup.
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Affiliation(s)
- Robin Nussbaum
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211Geneva, Switzerland
| | - Kye J Robinson
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211Geneva, Switzerland
| | - Yoshiki Soda
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211Geneva, Switzerland
| | - Eric Bakker
- Department of Inorganic and Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211Geneva, Switzerland
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5
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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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6
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Soda Y, Robinson KJ, Nussbaum R, Bakker E. Protamine/heparin optical nanosensors based on solvatochromism. Chem Sci 2021; 12:15596-15602. [PMID: 35003589 PMCID: PMC8653997 DOI: 10.1039/d1sc04930e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/14/2021] [Indexed: 11/21/2022] Open
Abstract
Optical nanosensors for the detection of polyions, including protamine and heparin, have to date relied upon ion-exchange reactions involving an analyte and an optical transducer. Unfortunately, due to the limited selectivity of the available ionophores for polyions, this mechanism has suffered from severe interference in complex sample matrices. To date no optical polyion nanosensors have demonstrated acceptable performance in serum, plasma or blood. Herein we describe a new type of nanosensor based on our discovery of a “hyper-polarizing lipophilic phase” in which dinonylnaphthalenesulfonate (DNNS−) polarizes a solvatochromic dye much more than even an aqueous environment. We have found that the apparent polarity of the organic phase is only modulated when DNNS− binds to large polyions such as protamine, unlike singly charged ions that lack the cooperative binding required to cause a significant shift in the distribution of the polarizing DNNS− ions. Our new sensing mechanism allows solvatochromic signal transduction without the transducer undergoing ion exchange. The result is significantly improved sensitivity and selectivity, enabling for the first time the quantification of protamine and heparin in human plasma using optical nanosensors that correlates with the current gold standard analysis method, the anti-Xa factor assay. Novel optical nanosensors for the selective detection of the polycationic protamine based on solvatochromic signal change allow one to detect heparin in plasma.![]()
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Affiliation(s)
- Yoshiki Soda
- Department of Inorganic, Analytical Chemistry, University of Geneva Quai Ernest-Ansermet 30 1211 Geneva Switzerland
| | - Kye J Robinson
- Department of Inorganic, Analytical Chemistry, University of Geneva Quai Ernest-Ansermet 30 1211 Geneva Switzerland
| | - Robin Nussbaum
- Department of Inorganic, Analytical Chemistry, University of Geneva Quai Ernest-Ansermet 30 1211 Geneva Switzerland
| | - Eric Bakker
- Department of Inorganic, Analytical Chemistry, University of Geneva Quai Ernest-Ansermet 30 1211 Geneva Switzerland
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7
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Tang Y, Zhai J, Chen Q, Xie X. Ruthenium bipyridine complexes as electrochemiluminescent transducers for ionophore-based ion-selective detection. Analyst 2021; 146:6955-6959. [PMID: 34661221 DOI: 10.1039/d1an01355f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here a method to determine target ion concentrations (with Na+ as a model) based on ionophores and electrochemiluminescence (ECL). Ruthenium bipyridine complexes were released from thin polymeric films (plasticized poly(vinyl chloride) also containing a sodium ionophore) into the sample solution following an explicit ion-exchange process (between Na+ and the ruthenium complex). Two signal transducers, tris(2,2'-(pCF3)bipyridine)ruthenium(II) (Ru(p-CF3-bpy)32+) and tris(2,2'-bipyridyl)dichlororuthenium(II) (Ru(bpy)32+), were examined using the sensing film, with the latter providing a more sensitive detection range (ca. 1 to 100 μM) than that of the more hydrophobic one (0.01 to 1 mM). While the ionophore (Na+ ionophore X) offered excellent selectivity to the method, the ruthenium complexes made the measurements independent of the sample pH. Furthermore for complex biological samples such as blood serum, an indirect approach of measuring the ECL of the remaining ruthenium complexes helps avoid background matrix interference to the ECL production at the working electrode, making the ECL method more attractive for real complex samples.
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Affiliation(s)
- Yinghong Tang
- Department of Chemistry, Southern University of Science and Technology, 1088 Xili Xueyuan Blvd., Nanshan District, Shenzhen, 518055, China.
| | - Jingying Zhai
- SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, 1088 Xili Xueyuan Blvd., Nanshan District, Shenzhen, 518055, China.
| | - Qinghan Chen
- SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, 1088 Xili Xueyuan Blvd., Nanshan District, Shenzhen, 518055, China.
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology, 1088 Xili Xueyuan Blvd., Nanshan District, Shenzhen, 518055, China.
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8
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Huynh GT, Kesarwani V, Walker JA, Frith JE, Meagher L, Corrie SR. Review: Nanomaterials for Reactive Oxygen Species Detection and Monitoring in Biological Environments. Front Chem 2021; 9:728717. [PMID: 34568279 PMCID: PMC8461210 DOI: 10.3389/fchem.2021.728717] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/25/2021] [Indexed: 12/19/2022] Open
Abstract
Reactive oxygen species (ROS) and dissolved oxygen play key roles across many biological processes, and fluorescent stains and dyes are the primary tools used to quantify these species in vitro. However, spatio-temporal monitoring of ROS and dissolved oxygen in biological systems are challenging due to issues including poor photostability, lack of reversibility, and rapid off-site diffusion. In particular, ROS monitoring is hindered by the short lifetime of ROS molecules and their low abundance. The combination of nanomaterials and fluorescent detection has led to new opportunities for development of imaging probes, sensors, and theranostic products, because the scaffolds lead to improved optical properties, tuneable interactions with cells and media, and ratiometric sensing robust to environmental drift. In this review, we aim to critically assess and highlight recent development in nanosensors and nanomaterials used for the detection of oxygen and ROS in biological systems, and their future potential use as diagnosis tools.
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Affiliation(s)
- Gabriel T. Huynh
- Department of Chemical Engineering, Monash University, Clayton, VIC, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Node, Clayton, VIC, Australia
| | - Vidhishri Kesarwani
- Department of Chemical Engineering, Monash University, Clayton, VIC, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Node, Clayton, VIC, Australia
| | - Julia A. Walker
- Department of Chemical Engineering, Monash University, Clayton, VIC, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Node, Clayton, VIC, Australia
| | - Jessica E. Frith
- Monash Institute of Medical Engineering, Monash University, Clayton, VIC, Australia
- Department of Material Science and Engineering, Monash University, Clayton, VIC, Australia
- ARC Training Centre for Cell and Tissue Engineering Technologies, Monash University, Clayton, VIC, Australia
| | - Laurence Meagher
- Department of Material Science and Engineering, Monash University, Clayton, VIC, Australia
- ARC Training Centre for Cell and Tissue Engineering Technologies, Monash University, Clayton, VIC, Australia
| | - Simon R. Corrie
- Department of Chemical Engineering, Monash University, Clayton, VIC, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Node, Clayton, VIC, Australia
- ARC Training Centre for Cell and Tissue Engineering Technologies, Monash University, Clayton, VIC, Australia
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9
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Golcs Á, Dargó G, Balogh GT, Huszthy P, Tóth T. Development of a microplate-format direct optode sensor for ultra-high-throughput environmental and wastewater monitoring of Pb 2. Anal Chim Acta 2021; 1167:338586. [PMID: 34049633 DOI: 10.1016/j.aca.2021.338586] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 04/13/2021] [Accepted: 04/26/2021] [Indexed: 01/10/2023]
Abstract
Although many Pb2+-selective optodes have been developed so far, methods using optical sensor membranes have not become widespread in environmental analytical practice. In order to create a bulk optode sensor, which can overcome all of the main drawbacks in the application of conventional optode membranes, - i.e., pH-dependence, long response time and the leakage of the ionic components - unusually thick PVC membrane was developed, embedded in microtiter plates and operated on a novel concept. This is the first reported work, which applies a plate-format optode as well as a direct optode-type sensing membrane for determination of Pb2+. We reported here also the first example for the application of an ionic component-free bulk optode membrane to avoid the membrane leakage, improve the regenerability and extend the lifetime of the membrane. The reported sensor has a LOD above 4.0 × 10-7 M (∼83 μg L-1), thus it is unsuitable for the effective monitoring of drinking waters, but considered to be a promising method for monitoring contamination episodes. On the other hand, the widest pH-independent working range of 4.3 < pH < 7.0 among bulk optodes reported in the literature was realized and an unprecedentedly fast response time of <10 s was achieved. The effectiveness of the applied method was investigated by measuring Pb2+-spiked multicomponent aqueous solutions as simulated environmental or wastewater samples containing near equimolar amounts of Ag+, Ca2+, Co2+, Cu2+, K+, Mg2+, Na+ and Zn2+ as acetate salts. In the presence of these potential competing ions with a concentration not greater than the typical ionic strength of surface freshwaters (∼10-3 M) the reported sensor proved to be appropriate for the selective detection of Pb2+ without any preparation of the samples (e.g., preconcentration, buffering, addition of excipients, etc.) with a required sample volume of only 100 μL. An outstanding analytical performance could be achieved within an average time of less, than 5 s/sample. The reported fluorescent probe is considered to be a promising method for replacing atomic absorption spectroscopy- (AAS), anodic stripping voltammetry- (ASV) or inductively coupled plasma- (ICP) based techniques as well as conventional ion-selective bulk membranes in high-throughput preliminary environmental monitoring of Pb2+, as it provides a cheap and unprecedentedly fast qualitative analysis of contaminated surface and wastewaters.
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Affiliation(s)
- Ádám Golcs
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111, Budapest, Hungary.
| | - Gergő Dargó
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budafoki út 8., H-1111, Budapest, Hungary
| | - György Tibor Balogh
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budafoki út 8., H-1111, Budapest, Hungary; Faculty of Pharmacy, Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös utca 6., H-6720, Szeged, Hungary.
| | - Péter Huszthy
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111, Budapest, Hungary
| | - Tünde Tóth
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Szent Gellért tér 4., H-1111, Budapest, Hungary; Institute for Energy Security and Environmental Safety, Centre for Energy Research, Konkoly-Thege Miklós út 29-33., H-1121, Budapest, Hungary
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10
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Du X, Zhai J, Li X, Zhang Y, Li N, Xie X. Hydrogel-Based Optical Ion Sensors: Principles and Challenges for Point-of-Care Testing and Environmental Monitoring. ACS Sens 2021; 6:1990-2001. [PMID: 34044533 DOI: 10.1021/acssensors.1c00756] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrogel is a unique family of biocompatible materials with growing applications in chemical and biological sensors. During the past few decades, various hydrogel-based optical ion sensors have been developed aiming at point-of-care testing and environmental monitoring. In this Perspective, we provide an overview of the research field including topics such as photonic crystals, DNAzyme cross-linked hydrogels, ionophore-based ion sensing hydrogels, and fluoroionophore-based optodes. As the different sensing principles are summarized, each strategy offers its advantages and limitations. In a nutshell, developing optical ion sensing hydrogels is still in the early stage with many opportunities lying ahead, especially with challenges in selectivity, assay time, detection limit, and usability.
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Affiliation(s)
- Xinfeng Du
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jingying Zhai
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiaoang Li
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yupu Zhang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Niping Li
- 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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11
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Madawala H, Sabaragamuwe SG, Elangovan S, Kim J. In Situ Measuring Partition Coefficient at Intact Nanoemulsions: A New Application of Single-Entity Electrochemistry. Anal Chem 2020; 93:1154-1160. [PMID: 33290054 DOI: 10.1021/acs.analchem.0c04205] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a new application of the single-entity electrochemistry (SEE) to in situ measure a partition coefficient at intact nanoemulsions (NEs). The partition coefficient at intact NEs is the most crucial physicochemical property to determine the uptake of delivery molecules inside NEs. It, however, has not been unequivocally elucidated by currently existing techniques based on ex situ measurements. Herein, we apply the single-entity electrochemistry (SEE) to directly and quantitatively measure the partition coefficient at NEs in situ. In this work, we use NEs featured with amphiphilic triblock copolymer (Pluronic F-127) as a model system to extract/preconcentrate 2-aminobiphenyl (2-ABP) dissolved in the water and demonstrate a new application of SEE to in situ quantitatively estimate the amounts of 2-ABP distributed into each intact NE. Our SEE measurements reveal that the partitioning is governed by extraction of 2-ABP inside NEs rather than its adsorption on the NE surface, and this extraction is remarkably efficient with up to ∼8 orders of magnitude of the preconcentration factor, thus leading to the unprecedentedly large partition coefficient of 1.9 (±1.4) × 1010. This result implies that not only the thermodynamic distribution but also the intermolecular interaction of extracted compounds inside NEs could play a significant role in the apparent partition coefficient (P = 1.9 (±1.4) × 1010). The experimentally determined partition coefficient was validated by molecular dynamics (MD) simulations with showing a stabilizing role of intermolecular interaction in the partitioned system. We further verified our methodology with other compounds exhibiting aromatic properties, e.g., ferrocenemethanol. Significantly, our new approach can be readily applicable to investigate practical NEs commercially marketed for drug, food, and cosmetics.
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Affiliation(s)
- Hiranya Madawala
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | | | - Subhashini Elangovan
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Jiyeon Kim
- Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, United States
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12
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Kisiel A, Baniak B, Maksymiuk K, Michalska A. Ion-selective reversing aggregation-caused quenching - Maximizing optodes signal stability. Talanta 2020; 220:121358. [PMID: 32928393 DOI: 10.1016/j.talanta.2020.121358] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 12/22/2022]
Abstract
An alternative optical signal transduction mechanism for ion-selective optodes is proposed. The nanostructural sensors benefit from ion-selective reversing aggregation caused quenching yielding turn-on, bright and highly stable optical signals. Selective incorporation of analyte results in transformation of the polymer dye from aggregate to a micelle structure, affecting spatial arrangement of chromophore groups in the nanostructure. Formation of micelles, induced by ion-selective interactions, is coupled with pronounced increase of emission due to decrease of aggregation caused quenching, characteristic for dispersed phase formation. The formed micelles are highly stable in solution, offering constant in time (days scale) emission signal. The important difference from other known systems is that the analyte binding induced change does not affect the chromophore group, but occurs in distant, terminal position of the side chain of the polymer. As a model system calcium selective optodes have been prepared. Thus obtained probes were characterized with broad analyte concentration range (from 10-7 to 10-3 M) emission signal increase. The turn-on response was observed within broad range of pH (6.3-8.9), with no sign of optical signal deterioration during 5 days contact with the analyte or more than two weeks storage.
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Affiliation(s)
- Anna Kisiel
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Barbara Baniak
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Krzysztof Maksymiuk
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Agata Michalska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland.
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13
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Electrochemiluminescence in Luminol-based calcium-selective nanoparticles for the determination of calcium ions. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114671] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Unintended Changes of Ion-Selective Membranes Composition-Origin and Effect on Analytical Performance. MEMBRANES 2020; 10:membranes10100266. [PMID: 32998393 PMCID: PMC7601616 DOI: 10.3390/membranes10100266] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 01/28/2023]
Abstract
Ion-selective membranes, as used in potentiometric sensors, are mixtures of a few important constituents in a carefully balanced proportion. The changes of composition of the ion-selective membrane, both qualitative and quantitative, affect the analytical performance of sensors. Different constructions and materials applied to improve sensors result in specific conditions of membrane formation, in consequence, potentially can result in uncontrolled modification of the membrane composition. Clearly, these effects need to be considered, especially if preparation of miniaturized, potentially disposable internal-solution free sensors is considered. Furthermore, membrane composition changes can occur during the normal operation of sensors—accumulation of species as well as release need to be taken into account, regardless of the construction of sensors used. Issues related to spontaneous changes of membrane composition that can occur during sensor construction, pre-treatment and their operation, seem to be underestimated in the subject literature. The aim of this work is to summarize available data related to potentiometric sensors and highlight the effects that can potentially be important also for other sensors using ion-selective membranes, e.g., optodes or voltammetric sensors.
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15
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Li Y, Feng J, Huang Y, Qin Y, Jiang D, Chen HY. Upconverting ion-selective nanoparticles for the imaging of intracellular calcium ions. Analyst 2020; 145:4768-4771. [PMID: 32538398 DOI: 10.1039/d0an00454e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Upconverting ion-selective nanoparticles that emit light at the near-infrared region are prepared here. The transport of calcium ions induces the deprotonation of the incorporated chromoionophore (P6) through ion exchange resulting in an increase in the emission of UCNPs for the detection of intracellular calcium ions.
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Affiliation(s)
- Yu Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210092, China.
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16
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Wang R, Du X, Ma X, Zhai J, Xie X. Ionophore-based pH independent detection of ions utilizing aggregation-induced effects. Analyst 2020; 145:3846-3850. [PMID: 32293619 DOI: 10.1039/d0an00486c] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ionophores have been integrated into various electrochemical and optical sensing platforms for the selective detection of ions. Previous ionophore-based optical sensors rely on a H+ chromoionophore as the signal transducer and consequently, suffered from a pH cross-response. pH independent methods were proposed very recently by utilizing the solvatochromic dyes or the exhaustive mode. Here, we report a pH independent sensing principle based on nanospheres containing ionophores. As the ion-exchange occurs, the signal transducer undergoes aggregation-induced emission (AIE) or aggregation-caused quenching (ACQ), leading to a dramatic change in fluorescence intensity. The principle was evaluated on different ionophores including those selective for K+, Na+, Ca2+, and Pb2+. The nanospheres were also introduced into microfluidic chips and successfully applied for the determination of sodium and potassium ion concentrations in diluted blood serum and urine samples.
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Affiliation(s)
- Renjie Wang
- Department of Chemistry, Southern University of Science and Technology, 1088 Xili Xueyuan Blvd., Nanshan District, Shenzhen, 518055, China.
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17
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Stelmach E, Kaczmarczyk B, Maksymiuk K, Michalska A. Tailoring polythiophene cation-selective optodes for wide pH range sensing. Talanta 2020; 211:120663. [DOI: 10.1016/j.talanta.2019.120663] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/16/2019] [Accepted: 12/20/2019] [Indexed: 01/17/2023]
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18
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Jewell MP, Greer MD, Dailey AL, Cash KJ. Triplet-Triplet Annihilation Upconversion Based Nanosensors for Fluorescence Detection of Potassium. ACS Sens 2020; 5:474-480. [PMID: 31912733 DOI: 10.1021/acssensors.9b02252] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Typical ionophore-based nanosensors use Nile blue derived indicators called chromoionophores, which must contend with strong background absorption, autofluorescence, and scattering in biological samples that limit their usefulness. Here, we demonstrate potassium-selective nanosensors that utilize triplet-triplet annihilation upconversion to minimize potential optical interference in biological media and a pH-sensitive quencher molecule to modulate the upconversion intensity in response to changes in analyte concentration. A triplet-triplet annihilation dye pair (platinum(II) octaethylporphyrin and 9,10-diphenylanthracene) was integrated into nanosensors containing an analyte binding ligand (ionophore), charge-balancing additive, and a pH indicator quencher. The nanosensor response to potassium was shown to be reversible and stable for 3 days. In addition, the nanosensors are selective against sodium, calcium, and magnesium (selectivity coefficients in log10 units of -2.2 for calcium, -2.0 for sodium, and -2.4 for magnesium), three interfering ions found in biological samples. The lack of signal overlap between the upconversion nanosensors and GFP, a common biological fluorescent indicator, is demonstrated in confocal microscope images of sensors embedded in a bacterial biofilm.
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Affiliation(s)
- Megan P. Jewell
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Meredith D. Greer
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Alexandra L. Dailey
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Kevin J. Cash
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401, United States
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19
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Real-time particle-by-particle detection of erythrocyte-camouflaged microsensor with extended circulation time in the bloodstream. Proc Natl Acad Sci U S A 2020; 117:3509-3517. [PMID: 32019879 DOI: 10.1073/pnas.1914913117] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Personalized medicine offers great potential benefits for disease management but requires continuous monitoring of drugs and drug targets. For instance, the therapeutic window for lithium therapy of bipolar disorder is very narrow, and more frequent monitoring of sodium levels could avoid toxicity. In this work, we developed and validated a platform for long-term, continuous monitoring of systemic analyte concentrations in vivo. First, we developed sodium microsensors that circulate directly in the bloodstream. We used "red blood cell mimicry" to achieve long sensor circulation times of up to 2 wk, while being stable, reversible, and sensitive to sodium over physiologically relevant concentration ranges. Second, we developed an external optical reader to detect and quantify the fluorescence activity of the sensors directly in circulation without having to draw blood samples and correlate the measurement with a phantom calibration curve to measure in vivo sodium. The reader design is inherently scalable to larger limbs, species, and potentially even humans. In combination, this platform represents a paradigm for in vivo drug monitoring that we anticipate will have many applications in the future.
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20
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Kisiel A, Kałuża D, Paterczyk B, Maksymiuk K, Michalska A. Quantifying plasticizer leakage from ion-selective membranes – a nanosponge approach. Analyst 2020; 145:2966-2974. [DOI: 10.1039/c9an02621e] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The spontaneous process of release of plasticizers from membranes typically used in ion-selective sensors is an effect which limits the lifetime of sensors and comes with a risk of safety hazards.
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Affiliation(s)
- Anna Kisiel
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Dawid Kałuża
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - Bohdan Paterczyk
- Laboratory of Electron and Confocal Microscopy
- Faculty of Biology
- University of Warsaw
- 02-096 Warsaw
- Poland
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21
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Inkjet-printed pH-independent paper-based calcium sensor with fluorescence signal readout relying on a solvatochromic dye. Anal Bioanal Chem 2019; 412:3489-3497. [PMID: 31773228 DOI: 10.1007/s00216-019-02218-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/04/2019] [Accepted: 10/15/2019] [Indexed: 10/25/2022]
Abstract
A challenge for paper-based cation sensors relying on classical carrier-based ion-selective optodes (ISOs) is their pH-cross response caused by the use of H+-sensitive chromoionophores as optical signal transducers. This work demonstrates fully pH-independent fluorescence-based calcium detection with a paper-based plasticizer-free ISO. To achieve a pH-independent assay, a solvatochromic dye (SD) instead of a traditional H+-sensitive chromoionophore has been applied to the paper-based ISO by means of inkjet printing technology. The detection principle depends on an ionophore-driven phase-transfer ion-exchange reaction between target cations and the positively charged SD, which no longer involves H+ in the optical signal transduction process. The developed paper-based ISOs with the SD resulted in Ca2+ concentration-dependent response curves not affected by the sample pH (pH 6.0, 7.0, and 8.0). The dynamic range obtained for Ca2+ detection was from 10-5 to 1 mol L-1 with a detection limit of 19.3 μmol L-1. Additionally, excellent selectivity derived from the used ionophore has been confirmed. As a simple practical application, the determination of Ca2+ in mineral water has been achieved without the pH-buffering process required for conventional cation-exchange ISOs.
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22
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Chen Q, Li X, Wang R, Zeng F, Zhai J, Xie X. Rapid Equilibrated Colorimetric Detection of Protamine and Heparin: Recognition at the Nanoscale Liquid–Liquid Interface. Anal Chem 2019; 91:10390-10394. [DOI: 10.1021/acs.analchem.9b01654] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qinghan Chen
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
- Department of Chemistry, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
| | - Xiaoang Li
- Department of Chemistry, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
| | - Renjie Wang
- Department of Chemistry, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
| | - Fanxin Zeng
- Department of Clinical Research Center, Dazhou Central Hospital, Dazhou 635000, China
| | - Jingying Zhai
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology, Nanshan District, Shenzhen 518055, China
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23
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Zdrachek E, Bakker E. From Molecular and Emulsified Ion Sensors to Membrane Electrodes: Molecular and Mechanistic Sensor Design. Acc Chem Res 2019; 52:1400-1408. [PMID: 31017760 DOI: 10.1021/acs.accounts.9b00056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Selective molecular ion probes are often insoluble in water and require a hydrophobic solvent environment for strong and selective binding, which runs counter to the desire of utilizing them in a homogeneous solution. This Account aims to guide the reader on how such molecules, often coined ionophores, can be harnessed to design exceptionally useful optical and electrochemical sensors. We start here with some historical context on the design of such ionophores and continue with the explanation of the response mechanism of optical and potentiometric sensors and the role of combined components to build a robust ion sensor. This Account is addressed to nonspecialist readers and for this reason avoids extensive use of equations or theoretical considerations. The interested reader should turn to the original literature for further reading. Emulsified optical sensors are introduced as an initial example. Here, multiple reagents are confined in an attoliter sensing nanodroplet of the organic phase, immiscible with the aqueous sample phase. In this case, the ionophore molecules may retain their high affinity and selectivity to the target ion and the aqueous sample phase does not have to be modified. Emulsified optical sensors allow one to achieve the selective chemical sensing of ions, even with optically silent ionophores. Such ionophore-based nanodroplets are also discussed as a useful novel class of complexometric titration reagents and optical end point indicators with unique selectivities. We then turn our attention to potentiometric sensing probes and briefly discuss the unique opportunity of a direct characterization of ion-ionophore complexation properties offered by membrane electrodes. A carbonate-selective membrane electrode containing a highly selective tweezer-type ionophore with trifluoroacetophenone functional groups is then used as an example for the construction of a robust all-solid-state sensor. This potentiometric probe, in combination with a pH electrode, can directly measure PCO2 in freshwater lakes, demonstrating a dramatically improved response time relative to traditional sensors equipped with a gas-permeable membrane. In recent years, new sensing modes and electrode designs have been introduced to expand the application scope of ionophore-based potentiometric sensors. Membrane electrodes containing ionophores are placed under dynamic electrochemistry control to give important progress in the field. We specifically highlight our recent works by membranes that are controlled by chronopotentiometry (controlled current) for speciation analysis, by ion transfer voltammetry on thin sensing films for multianalyte detection, by exhaustive coulometry for potentially calibration-free sensors and with coulometric membrane pumps for the selective delivery of reagents.
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Affiliation(s)
- Elena Zdrachek
- University of Geneva, Department of Inorganic and Analytical Chemistry, Quai Ernest Ansermet 30, Geneva 1211, Switzerland
| | - Eric Bakker
- University of Geneva, Department of Inorganic and Analytical Chemistry, Quai Ernest Ansermet 30, Geneva 1211, Switzerland
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24
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Stelmach E, Kłucińska K, Maksymiuk K, Michalska A. Rational design of nanoptodes architecture – Towards multifunctional sensors. Talanta 2019; 196:226-230. [DOI: 10.1016/j.talanta.2018.12.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 12/11/2018] [Accepted: 12/14/2018] [Indexed: 11/16/2022]
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25
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Jansod S, Bakker E. Tunable Optical Sensing with PVC-Membrane-Based Ion-Selective Bipolar Electrodes. ACS Sens 2019; 4:1008-1016. [PMID: 30859814 DOI: 10.1021/acssensors.9b00179] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We show here that the response of ion-selective membrane electrodes (ISEs) based on traditional PVC membranes can be directly translated to a colorimetric readout by a closed bipolar electrode (BPE) arrangement. Because the resulting optical response is based on the turnover of the redox probe, ferroin, dissolved in a thin layer compartment, it directly indicates the potential change at the ISE in combination with a reference electrode. This class of probes measures ion activity, analogous to their ISE counterparts. Unlike other ion optodes, the response is also fully tunable over a wide concentration range by the application of an external potential and occurs in a compartment that is physically separate from the sample. To allow for the electrical charge to pass across the ion-selective electrodes, the membranes are doped with inert lipophilic electrolyte, ETH 500, but otherwise have an established composition. The observed response behavior correlates well with theory. A wide range of ion-selective membranes are confirmed to work with this readout principle, demonstrating the detection of potassium, sodium, calcium, and carbonate ions. The corresponding sigmodal calibration curve is used for quantitative analysis in a range of samples including commercial beverages and river and lake samples. The data are successfully correlated with atomic emission spectroscopy and direct potentiometry.
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Affiliation(s)
- Sutida Jansod
- Department of Inorganic, Analytical, and Applied Chemistry, University of Geneva, Quai Ernest-Ansermet 30, 1211 Geneva, Switzerland
| | - Eric Bakker
- Department of Inorganic, Analytical, and Applied Chemistry, University of Geneva, Quai Ernest-Ansermet 30, 1211 Geneva, Switzerland
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26
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Baranowska-Korczyc A, Stelmach E, Paterczyk B, Maksymiuk K, Michalska A. Ultrasmall self-assembly poly(N-isopropylacrylamide-butyl acrylate) (polyNIPAM-BA) thermoresponsive nanoparticles. J Colloid Interface Sci 2019; 542:317-324. [DOI: 10.1016/j.jcis.2019.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 12/27/2022]
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27
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Soda Y, Citterio D, Bakker E. Equipment-Free Detection of K + on Microfluidic Paper-Based Analytical Devices Based on Exhaustive Replacement with Ionic Dye in Ion-selective Capillary Sensors. ACS Sens 2019; 4:670-677. [PMID: 30702271 DOI: 10.1021/acssensors.8b01521] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A distance-based analysis of potassium ion (K+) is introduced that is performed on a microfluidic paper-based analytical device (μPAD) coupled to an ion-selective capillary sensor. The concept is based on two sequential steps, the selective replacement of analyte ion with an ionic dye, and the detection of this dye in a distance-based readout on paper. To achieve the first step, the capillary sensor holds a poly(vinyl chloride) (PVC) membrane film layer plasticized by dioctyl sebacate (DOS) that contains the potassium ionophore valinomycin, a lipophilic cation-exchanger and the ionic indicator Thioflavin T (ThT) on its inner wall. Upon introduction of the sample, K+ in the aqueous sample solution is quantitatively extracted into the film membrane and replaced with ThT. To convert the ion exchange signal into a distance-based analysis, this solution was dropped onto the inlet area of a μPAD to flow the ThT along a channel defined by wax printing, resulting in the electrostatic binding of ThT to the cellulose carboxylic groups. The initial amount of K+ determines the amount of ThT in the aqueous solution after ion-exchange, and consequently the distance of ThT-colored area reflects the sample K+ concentration. The ion exchange reaction was operated in a so-called "exhaustive sensing mode" and gave a distinct response in a narrow range of K+ concentration (1-6 mM) that cannot be achieved by the classical optode sensing mode. The absence of hydrogen ions from the equilibrium competition of the capillary sensor contributed to a complete pH-independence, unlike conventional optodes that contain a pH sensitive indicator. A very high selectivity for K+ over Na+ and Ca2+ has been confirmed in separate solutions and mixed solutions tests. K+ measurements in pooled serum samples at concentrations between 2 and 6 mM are successfully demonstrated on a temperature controlled support.
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Affiliation(s)
- Yoshiki Soda
- Department of Inorganic, Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211Geneva, Switzerland
| | - Daniel Citterio
- Department of Applied Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522 Yokohama, Japan
| | - Eric Bakker
- Department of Inorganic, Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211Geneva, Switzerland
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28
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Lee CH, Folz J, Tan JWY, Jo J, Wang X, Kopelman R. Chemical Imaging in Vivo: Photoacoustic-Based 4-Dimensional Chemical Analysis. Anal Chem 2019; 91:2561-2569. [DOI: 10.1021/acs.analchem.8b04797] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chang H. Lee
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jeff Folz
- Biophysics Program, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Joel W. Y. Tan
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Janggun Jo
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Xueding Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Raoul Kopelman
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Biophysics Program, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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29
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Wang L, Bakker E. A tunable detection range of ion-selective nano-optodes by controlling solvatochromic dye transducer lipophilicity. Chem Commun (Camb) 2019; 55:12539-12542. [DOI: 10.1039/c9cc06729a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A range of ionic solvatochromic dye (SD) transducers for use in ion-selective emulsified optical sensors are introduced and characterized.
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Affiliation(s)
- Lu Wang
- University of Geneva
- 1211 Geneva 4
- Switzerland
| | - Eric Bakker
- University of Geneva
- 1211 Geneva 4
- Switzerland
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30
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Yang W, Zhai J, Xie X. Rhodamine dye transfer from hydrogel to nanospheres for the chemical detection of potassium ions. Analyst 2019; 144:5617-5623. [DOI: 10.1039/c9an01079c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Smart hydrogels incorporating various functional nanomaterials are becoming popular tools for chemical sensing.
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Affiliation(s)
- Wei Yang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Jingying Zhai
- SUSTech Academy for Advanced Interdisciplinary Studies
- 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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31
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Rong G, Kim EH, Qiang Y, Di W, Zhong Y, Zhao X, Fang H, Clark HA. Imaging Sodium Flux during Action Potentials in Neurons with Fluorescent Nanosensors and Transparent Microelectrodes. ACS Sens 2018; 3:2499-2505. [PMID: 30358986 DOI: 10.1021/acssensors.8b00903] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sodium flux plays a pivotal role in neurobiological processes including initiation of action potentials and regulation of neuronal cell excitability. However, unlike the wide range of fluorescent calcium indicators used extensively for cellular studies, the choice of sodium probes remains limited. We have previously demonstrated optode-based nanosensors (OBNs) for detecting sodium ions with advantageous modular properties such as tunable physiological sensing range, full reversibility, and superb selectivity against key physiological interfering ion potassium. (1) Motivated by bridging the gap between the great interest in sodium imaging of neuronal cell activity as an alternative to patch clamp and limited choices of optical sodium indicators, in this Letter we report the application of nanosensors capable of detecting intracellular sodium flux in isolated rat dorsal root ganglion neurons during electrical stimulation using transparent microelectrodes. Taking advantage of the ratiometric detection scheme offered by this fluorescent modular sensing platform, we performed dual color imaging of the sensor to monitor the intracellular sodium currents underlying trains of action potentials in real time. The combination of nanosensors and microelectrodes for monitoring neuronal sodium dynamics is a novel tool for investigating the regulatory role of sodium ions involved during neural activities.
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32
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Shibata H, Hiruta Y, Citterio D. Fully inkjet-printed distance-based paper microfluidic devices for colorimetric calcium determination using ion-selective optodes. Analyst 2018; 144:1178-1186. [PMID: 30560965 DOI: 10.1039/c8an02146e] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Although the determination of calcium ions (Ca2+) is of high importance to monitor water hardness, currently available devices for on-site analysis suffer from a lack of user-friendliness and sensitivity. This work demonstrates fully inkjet-printed and low-cost microfluidic paper-based analytical devices (μPADs) for the simple naked-eye colorimetric determination of calcium ions (Ca2+) in drinking and tap water samples. The quantification of Ca2+ relies on visual readout of the length of a colour-changed detection channel modified with ionophore-doped ion-selective optode nanospheres (nano-optodes), eliminating the requirement of a scanner or a camera. All fabrication steps for deposition of assay reagents have been performed by means of a simple desktop thermal inkjet printer, which is expected to contribute to highly batch-to-batch reproducible device preparation. The detectable Ca2+ concentrations between 0.05 mmol L-1 and 5 mmol L-1 cover the range recommended by the International Organization for Standardization (0.05-2.5 mmol L-1) and the World Health Organization (WHO) guideline for Ca2+ quantification in drinking water (less than 5 mmol L-1). The lowest concentration of Ca2+ detectable by the naked eye was found to be 0.05 mmol L-1, which is below the value achieved with previously reported paper-based devices. μPAD quantified Ca2+ concentrations in tap or drinking waters were within 15% error of the results obtained with a classical complexometric titration. Hence, distance-based μPADs relying on nano-optodes are sensitive and reproducible tools for equipment-free on-site assaying of Ca2+ in real samples.
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Affiliation(s)
- Hiroyuki Shibata
- Department of Applied Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Yuki Hiruta
- Department of Applied Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
| | - Daniel Citterio
- Department of Applied Chemistry, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
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33
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Kłucińska K, Stelmach E, Bartosińska P, Kisiel A, Maksymiuk K, Michalska A. Critical assessment of polymeric nanostructures used as colorimetric ions probes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:69-76. [PMID: 30184796 DOI: 10.1016/j.msec.2018.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 05/15/2018] [Accepted: 06/09/2018] [Indexed: 10/14/2022]
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34
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Zhu C, Huang M, Lan J, Chung LW, Li X, Xie X. Colorimetric Calcium Probe with Comparison to an Ion-Selective Optode. ACS OMEGA 2018; 3:12476-12481. [PMID: 31457978 PMCID: PMC6644788 DOI: 10.1021/acsomega.8b01813] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/20/2018] [Indexed: 06/10/2023]
Abstract
Design strategies for small molecular probes lay the foundation of numerous synthetic chemosensors. A water-soluble colorimetric calcium molecular probe inspired by the ionophore-based ion-selective optode is presented here with a tunable detection range (around micromolar at pH 7). The binding of Ca2+ resulted in the deprotonation of the probe and thus a significant spectral change, mimicking the ion-exchange process in ion-selective optodes. The 1:1 exchange between Ca2+ and H+ was confirmed with Job's plot. Computational studies revealed possible monomer and dimer forms of the probe-Ca2+ complexes.
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35
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Apichai S, Wang L, Pankratova N, Grudpan K, Bakker E. Ion-exchange Microemulsions for Eliminating Dilute Interferences in Potentiometric Determinations. ELECTROANAL 2018. [DOI: 10.1002/elan.201800366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sutasinee Apichai
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest-Ansermet 30 CH-1211 Geneva Switzerland
- Center of Excellence for Innovation in Analytical Science and Technology; Chiang Mai University; Chiang Mai 50200 Thailand
- Department of Chemistry, Faculty of Science; Chiang Mai University; Chiang Mai 50200 Thailand
| | - Lu Wang
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest-Ansermet 30 CH-1211 Geneva Switzerland
| | - Nadezda Pankratova
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest-Ansermet 30 CH-1211 Geneva Switzerland
| | - Kate Grudpan
- Center of Excellence for Innovation in Analytical Science and Technology; Chiang Mai University; Chiang Mai 50200 Thailand
- Department of Chemistry, Faculty of Science; Chiang Mai University; Chiang Mai 50200 Thailand
| | - Eric Bakker
- Department of Inorganic and Analytical Chemistry; University of Geneva; Quai Ernest-Ansermet 30 CH-1211 Geneva Switzerland
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36
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Zhou S, Peng X, Xu H, Qin Y, Jiang D, Qu J, Chen HY. Fluorescence Lifetime-Resolved Ion-Selective Nanospheres for Simultaneous Imaging of Calcium Ion in Mitochondria and Lysosomes. Anal Chem 2018; 90:7982-7988. [DOI: 10.1021/acs.analchem.8b00735] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shuai Zhou
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Xiao Peng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Haiyan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yu Qin
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Dechen Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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37
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Du X, Yang L, Hu W, Wang R, Zhai J, Xie X. A Plasticizer-Free Miniaturized Optical Ion Sensing Platform with Ionophores and Silicon-Based Particles. Anal Chem 2018; 90:5818-5824. [DOI: 10.1021/acs.analchem.8b00360] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xinfeng Du
- Department of Chemistry, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Liyuan Yang
- Department of Chemistry, Southern University of Science and Technology, 518055 Shenzhen, China
| | - WenChang Hu
- Department of Chemistry, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Renjie Wang
- Department of Chemistry, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Jingying Zhai
- Department of Chemistry, Southern University of Science and Technology, 518055 Shenzhen, China
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology, 518055 Shenzhen, China
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38
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Gerold CT, Bakker E, Henry CS. Selective Distance-Based K+ Quantification on Paper-Based Microfluidics. Anal Chem 2018; 90:4894-4900. [DOI: 10.1021/acs.analchem.8b00559] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chase T. Gerold
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80521, United States
- Department of Inorganic and Analytical Chemistry, The University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Eric Bakker
- Department of Inorganic and Analytical Chemistry, The University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
| | - Charles S. Henry
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80521, United States
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39
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Du X, Xie X. Non-Equilibrium Diffusion Controlled Ion-Selective Optical Sensor for Blood Potassium Determination. ACS Sens 2017; 2:1410-1414. [PMID: 28949507 DOI: 10.1021/acssensors.7b00614] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Blood electrolyte measurements play important roles in clinical diagnostics. Optical ion sensors as simple and elegant as a mercury thermometer are in high demand. We present here an analytical method to quantify potassium ions in undiluted human blood and plasma by measuring the distance or the rate of the color propagation. The sensor was composed of K+-selective nanospheres embedded in an agarose hydrogel where mass transport was diffusion controlled. The sensor's color-changing rate and the distance of color propagation depended linearly on the logarithm of K+ activity. A theoretical model was established and fully supported the experimental findings. This work lays the foundation of a new family of optical ion sensors for direct determination of common blood electrolytes.
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Affiliation(s)
- Xinfeng Du
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Xiaojiang Xie
- Department
of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
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40
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A method for estimating intracellular ion concentration using optical nanosensors and ratiometric imaging. Sci Rep 2017; 7:10819. [PMID: 28883429 PMCID: PMC5589868 DOI: 10.1038/s41598-017-11162-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/18/2017] [Indexed: 11/22/2022] Open
Abstract
Optical nanoparticle (NP)-based sensors have been widely implemented as tools for detection of targeted ions and biomolecules. The NP sensing platform offer a modular design that can incorporate different sensing components for greater target specificity and the ability to tune the dynamic range, as well as encapsulation of multiple dyes to generate a ratiometric signal with varying spectra. Despite these advantages, demonstrating quantitative ion imaging for intracellular measurement still possess a major challenge. Here, we describe fundamentals that enable intracellular validation of this approach using ion-selective nanosensors for investigating calcium (Ca2+) as a model ion. While conventional indicators can improve individual aspects of indicator performance such as Kd, wavelength, and ratiometric measurements, the use of NP sensors can achieve combined benefits of addressing these issues simultaneously. The nanosensor incorporates highly calcium-selective ionophores and two fluorescence indicators that act as signal transducers to facilitate quantitative ratiometric imaging. For intracellular Ca2+ application, the sensors are fine-tuned to physiological sensing range, and live-cell imaging and quantification are demonstrated in HeLa cells loaded with nanosensors and their responsiveness to carbachol-evoked store release (~400 nM). The current nanosensor design thus provides a promising sensing platform for real-time detection and optical determination of intracellular ions.
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41
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Lee CH, Folz J, Zhang W, Jo J, Tan JWY, Wang X, Kopelman R. Ion-Selective Nanosensor for Photoacoustic and Fluorescence Imaging of Potassium. Anal Chem 2017. [PMID: 28633520 DOI: 10.1021/acs.analchem.7b00930] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Ion-selective optodes (ISOs), the optical analog of ion-selective electrodes, have played an increasingly important role in chemical and biochemical analysis. Here we extend this technique to ion-selective photoacoustic optodes (ISPAOs) that serve at the same time as fluorescence-based ISOs, and apply it specifically to potassium (K+). Notably, the potassium ion is one of the most abundant cations in biological systems, involved in numerous physiological and pathological processes. Furthermore, it has been recently reported that the presence of abnormal extracellular potassium concentrations in tumors suppresses the immune responses and thus suppresses immunotherapy. However, unfortunately, sensors capable of providing potassium images in vivo are still a future proposition. Here, we prepared an ion-selective potassium nanosensor (NS) aimed at in vivo photoacoustic (PA) chemical imaging of the extracellular environment, while being also capable of fluorescence based intracellular ion-selective imaging. This potassium nanosensor (K+ NS) modulates its optical properties (absorbance and fluorescence) according to the potassium concentration. The K+ NS is capable of measuring potassium, in the range of 1 mM to 100 mM, with high sensitivity and selectivity, by ISPAO based measurements. Also, a near infrared dye surface modified K+ NS allows fluorescence-based potassium sensing in the range of 20 mM to 1 M. The K+ NS serves thus as both PA and fluorescence based nanosensor, with response across the biologically relevant K+ concentrations, from the extracellular 5 mM typical values (through PA imaging) to the intracellular 150 mM typical values (through fluorescence imaging).
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Affiliation(s)
- Chang H Lee
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Jeff Folz
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Wuliang Zhang
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Janggun Jo
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Joel W Y Tan
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Xueding Wang
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Raoul Kopelman
- Department of Chemistry, ‡Biophysics Program, §Department of Biomedical Engineering, and ∥Department of Radiology, University of Michigan , Ann Arbor, Michigan 48109, United States
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42
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Du X, Zhu C, Xie X. Thermochromic Ion-Exchange Micelles Containing H + Chromoionophores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5910-5914. [PMID: 28539048 DOI: 10.1021/acs.langmuir.7b01221] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thermochromic composites constitute a classical subfamily of stimuli responsive materials. We report here the thermochromic effect in Pluronic F-127 (F127) micelles containing hydrophobic ion-exchanger and H+ chromoionophores. The highly versatile and reversible thermochromism is attributed to the temperature-induced hydration-dehydration of the peripheral layer of the micelles, which in turn controls the ion-exchange process between the core and the periphery of the micelles. The color typically changes abruptly within 3-5 °C, and the color transition temperature can be tuned within 5-25 °C upon varying the F127 concentrations. This work lays the foundation of a new variety of thermochromic materials involving ion-exchange.
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Affiliation(s)
- Xinfeng Du
- Department of Chemistry, Southern University of Science and Technology , Shenzhen 518055, P. R. China
| | - Changyou Zhu
- Department of Chemistry, Southern University of Science and Technology , Shenzhen 518055, P. R. China
| | - Xiaojiang Xie
- Department of Chemistry, Southern University of Science and Technology , Shenzhen 518055, P. R. China
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43
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Ding J, Lv E, Zhu L, Qin W. Optical Ion Sensing Platform Based on Potential-Modulated Release of Enzyme. Anal Chem 2017; 89:3235-3239. [DOI: 10.1021/acs.analchem.7b00072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jiawang Ding
- Key Laboratory of Coastal Environmental
Processes and Ecological Remediation, Yantai Institute of Coastal
Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial
Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, P. R. China
| | - Enguang Lv
- Key Laboratory of Coastal Environmental
Processes and Ecological Remediation, Yantai Institute of Coastal
Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial
Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, P. R. China
| | - Liyan Zhu
- Key Laboratory of Coastal Environmental
Processes and Ecological Remediation, Yantai Institute of Coastal
Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial
Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, P. R. China
| | - Wei Qin
- Key Laboratory of Coastal Environmental
Processes and Ecological Remediation, Yantai Institute of Coastal
Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Provincial
Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, P. R. China
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44
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Analytical advantages of copolymeric microspheres for fluorimetric sensing – tuneable sensitivity sensors and titration agents. Talanta 2017; 163:17-23. [DOI: 10.1016/j.talanta.2016.10.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/14/2016] [Accepted: 10/16/2016] [Indexed: 11/17/2022]
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45
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Yang C, Qin Y, Jiang D, Chen HY. Continuous Fluorescence Imaging of Intracellular Calcium by Use of Ion-Selective Nanospheres with Adjustable Spectra. ACS APPLIED MATERIALS & INTERFACES 2016; 8:19892-19898. [PMID: 27408988 DOI: 10.1021/acsami.6b05406] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Continuous fluorescence imaging of intracellular ions in various spectral ranges is important for biological studies. In this paper, fluorescent calcium-selective nanospheres, including calix[4]arene-functionalized bodipy (CBDP) or 9-(diethylamino)-5-[(2-octyldecyl)imino]benzo[a]phenoxazine (ETH 5350) as the chromoionophore, were prepared to demonstrate intracellular calcium imaging in visible or near-IR regions, respectively. The fluorescence of the nanospheres was controlled by the chromoionophore, and thus the spectral range for detection was adjustable by choosing the proper chromoionophore. The response time of the nanospheres to calcium was typically 1 s, which allowed accurate measurement of intracellular calcium. These nanospheres were loaded into cells through free endocytosis and exhibited fluorescence for 24 h, and their intensity was correlated with the elevation of intracellular calcium upon stimulation. The successful demonstration of calcium imaging by use of ion-selective nanospheres within two spectral ranges in 24 h supported that these nanospheres could be applied for continuous imaging of intracellular ions with adjustable spectra.
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Affiliation(s)
- Chenye Yang
- The State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210093, China
| | - Yu Qin
- The State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210093, China
| | - Dechen Jiang
- The State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210093, China
| | - Hong-Yuan Chen
- The State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210093, China
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46
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Kłucińska K, Stelmach E, Kisiel A, Maksymiuk K, Michalska A. Nanoparticles of Fluorescent Conjugated Polymers: Novel Ion-Selective Optodes. Anal Chem 2016; 88:5644-8. [DOI: 10.1021/acs.analchem.6b00737] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Katarzyna Kłucińska
- Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Emilia Stelmach
- Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Anna Kisiel
- Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Krzysztof Maksymiuk
- Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Agata Michalska
- Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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47
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Xie X, Zhai J, Jarolímová Z, Bakker E. Determination of pKa Values of Hydrophobic Colorimetric pH Sensitive Probes in Nanospheres. Anal Chem 2016; 88:3015-8. [DOI: 10.1021/acs.analchem.5b04671] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Xiaojiang Xie
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Jingying Zhai
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Zdeňka Jarolímová
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
| | - Eric Bakker
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211 Geneva, Switzerland
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48
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Renovating the chromoionophores and detection modes in carrier-based ion-selective optical sensors. Anal Bioanal Chem 2016; 408:2717-25. [DOI: 10.1007/s00216-016-9406-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 02/02/2016] [Accepted: 02/08/2016] [Indexed: 01/11/2023]
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49
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Wang L, Xie X, Zhai J, Bakker E. Reversible pH-independent optical potassium sensor with lipophilic solvatochromic dye transducer on surface modified microporous nylon. Chem Commun (Camb) 2016; 52:14254-14257. [DOI: 10.1039/c6cc07841a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reversible and pH-independent fluorescent ion optode is introduced with an ionophore and surface confined solvatochromic dye transducer doped onto microporous nylon membranes.
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Affiliation(s)
- Lu Wang
- University of Geneva
- 1211 Geneva 4
- Switzerland
| | | | | | - Eric Bakker
- University of Geneva
- 1211 Geneva 4
- Switzerland
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50
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Tenjimbayashi M, Komatsu H, Akamatsu M, Nakanishi W, Suzuki K, Hill JP, Shiratori S, Ariga K. Determination of blood potassium using a fouling-resistant PVDF–HFP-based optode. RSC Adv 2016. [DOI: 10.1039/c5ra26514b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Monitoring potassium levels in blood is a significant aspect of clinical analysis. Here, we report a system for determination of potassium in blood which has the additional advantage of being blood-fouling resistant for safe and easy in situ sensing.
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Affiliation(s)
- Mizuki Tenjimbayashi
- Department of Integrated Design Engineering
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
| | - Hirokazu Komatsu
- WPI-MANA
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | | | - Waka Nakanishi
- WPI-MANA
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Koji Suzuki
- Department of Integrated Design Engineering
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
| | - Jonathan P. Hill
- WPI-MANA
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Seimei Shiratori
- Department of Integrated Design Engineering
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
| | - Katsuhiko Ariga
- WPI-MANA
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
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