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Choi KR, Honig ML, Bühlmann P. Ion-Selective Potentiometry with Plasma-Initiated Covalent Attachment of Sensing Membranes onto Inert Polymeric Substrates and Carbon Solid Contacts. Anal Chem 2024; 96:4702-4708. [PMID: 38451778 DOI: 10.1021/acs.analchem.4c00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
The physical delamination of the sensing membrane from underlying electrode bodies and electron conductors limits sensor lifetimes and long-term monitoring with ion-selective electrodes (ISEs). To address this problem, we developed two plasma-initiated graft polymerization methods that attach ionophore-doped polymethacrylate sensing membranes covalently to high-surface-area carbons that serve as the conducting solid contact as well as to polypropylene, poly(ethylene-co-tetrafluoroethylene), and polyurethane as the inert polymeric electrode body materials. The first strategy consists of depositing the precursor solution for the preparation of the sensing membranes onto the platform substrates with the solid contact carbon, followed by exposure to an argon plasma, which results in surface-grafting of the in situ polymerized sensing membrane. Using the second strategy, the polymeric platform substrate is pretreated with argon plasma and subsequently exposed to ambient oxygen, forming hydroperoxide groups on the surface. Those functionalities are then used for the initiation of photoinitiated graft polymerization of the sensing membrane. Attenuated total reflection-Fourier transform infrared spectroscopy, water contact angle measurements, and delamination tests confirm the covalent attachment of the in situ polymerized sensing membranes onto the polymeric substrates. Using membrane precursor solutions comprising, in addition to decyl methacrylate and a cross-linker, also 2-(diisopropylamino)ethyl methacrylate as a covalently attachable H+ ionophore and tetrakis(pentafluorophenyl)borate as ionic sites, both plasma-based fabrication methods produced electrodes that responded to pH in a Nernstian fashion, with the high selectivity expected for ionophore-based ISEs.
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Affiliation(s)
- Kwangrok R Choi
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Madeline L Honig
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Philippe Bühlmann
- Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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2
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The use of nanocomposite approach in the construction of carbon paste electrode and its application for the potentiometric determination of iodide. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02973-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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3
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Kalisz J, Węgrzyn K, Maksymiuk K, Michalska A. Fluorimetric Readout of Ion Selective Electrode Signals Operating under Chronopotentiometric Conditions. ChemElectroChem 2021. [DOI: 10.1002/celc.202100884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Justyna Kalisz
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Katarzyna Węgrzyn
- 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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4
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Electrochemical determination of Saxagliptin hydrochloride with MWCNTs/CuO/4′aminobenzo-18-crown-6-ether composite modified carbon paste electrode. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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5
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Criscuolo F, Taurino I, Dam VA, Catthoor F, Zevenbergen M, Carrara S, De Micheli G. Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2260. [PMID: 31100795 PMCID: PMC6567323 DOI: 10.3390/s19102260] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022]
Abstract
Nanostructured materials have attracted considerable interest over the last few decades to enhance sensing capabilities thanks to their unique properties and large surface area. In particular, noble metal nanostructures offer several advantages including high stability, non-toxicity and excellent electrochemical behaviour. However, in recent years the great expansion of point-of-care (POC) and wearable systems and the attempt to perform measurements in tiny spaces have also risen the need of increasing sensors miniaturization. Fast constant potential electrodeposition techniques have been proven to be an efficient way to obtain conformal platinum and gold nanostructured layers on macro-electrodes. However, this technique is not effective on micro-electrodes. In this paper, we investigate an alternative one-step deposition technique of platinum nanoflowers on micro-electrodes by linear sweep voltammetry (LSV). The effective deposition of platinum nanoflowers with similar properties to the ones deposited on macro-electrodes is confirmed by morphological analysis and by the similar roughness factor (~200) and capacitance (~18 μ F/mm 2 ). The electrochemical behaviour of the nanostructured layer is then tested in an solid-contact (SC) L i + -selective micro-electrode and compared to the case of macro-electrodes. The sensor offers Nernstian calibration with same response time (~15 s) and a one-order of magnitude smaller limit of detection (LOD) ( 2.6 × 10 - 6 ) with respect to the macro-ion-selective sensors (ISE). Finally, sensor reversibility and stability in both wet and dry conditions is proven.
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Affiliation(s)
- Francesca Criscuolo
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Irene Taurino
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Van Anh Dam
- Holst Centre, Interuniversity Microelectronics Centre (IMEC), 5656 AE Eindhoven, The Netherlands.
| | - Francky Catthoor
- Department ESAT, Interuniversity Microelectronics Centre (IMEC), 3001 Leuven, Belgium.
| | - Marcel Zevenbergen
- Holst Centre, Interuniversity Microelectronics Centre (IMEC), 5656 AE Eindhoven, The Netherlands.
| | - Sandro Carrara
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
| | - Giovanni De Micheli
- Laboratory of Integrated Systems, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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6
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Phytic acid@Ag-based all-solid-state ion selective electrode for potentiometric detection of Cu2+. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.01.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Maeda H, Tanaka K, Aratani M, Segi M. Ethynylpyrene Linked Benzocrown Ethers as Fluorescent Sensors for Metal Ions. Photochem Photobiol 2018; 95:762-772. [PMID: 30536779 DOI: 10.1111/php.13071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/06/2018] [Indexed: 12/24/2022]
Abstract
Substances containing ethynylpyrenes linked to either one or four benzocrown ethers were synthesized, and their absorption and fluorescence spectroscopic responses to metal ions were assessed. Addition of metal perchlorates to solutions of these substances promotes short wavelength shifts in their absorption and fluorescence maxima and increases in their fluorescence intensities. The magnitudes of the fluorescence intensity increases are dependent on the ring size and number of the crown ether and the nature of the metal cation. Association constants for complex formation were calculated using fluorescence intensity versus concentration data. Analysis using Job's plots showed that the substances containing one benzocrown ether moiety form 1:1 complexes with metal ions. Results of experiments employing repeated addition and removal of Mg(ClO4 )2 demonstrate that the ON-OFF fluorescence response can be repeated at least three times. Results of molecular orbital calculations show that complexation with metal ions lowers the energies of both the π and π* levels of the ethynylpyrene moiety and that in some cases the vacant orbital on the metal becomes the LUMO of the complex. An explanation of the spectroscopic changes promoted by metal ions is proposed in terms of electrostatic repulsion and structural regulation.
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Affiliation(s)
- Hajime Maeda
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
| | - Kazuhiro Tanaka
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
| | - Mona Aratani
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
| | - Masahito Segi
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, 920-1192, Japan
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A pyrene-inhibitor fluorescent probe with large Stokes shift for the staining of Aβ 1-42, α-synuclein, and amylin amyloid fibrils as well as amyloid-containing Staphylococcus aureus biofilms. Anal Bioanal Chem 2018; 411:251-265. [PMID: 30411148 DOI: 10.1007/s00216-018-1433-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/08/2018] [Accepted: 10/17/2018] [Indexed: 10/27/2022]
Abstract
Amyloid fibrils formed by a variety of peptides are biological markers of different human diseases, such as Alzheimer's disease, Parkinson's disease, and type II diabetes, and are structural constituents of bacterial biofilms. Novel fluorescent probes offering improved sensitivity or specificity toward that diversity of amyloid fibrils or providing alternative spectral windows are needed to improve the detection or the identification of amyloid structures. One potential source for such new probes is offered by molecules known to interact with fibrils, such as the inhibitors of amyloid aggregation found in drug discovery projects. Here we show the feasibility of the approach by designing, synthesizing, and testing several pyrene-based fluorescent derivatives of a previously discovered inhibitor of the aggregation of the Aβ1-42 peptide. All the derivatives tested retain the interaction with the amyloid architecture and allow its staining. The most soluble derivative, N-acetyl-2-(2-methyl-4-oxo-5,6,7,8-tetrahydro-4H-benzo[4,5]thieno[2,3-d][1,3]oxazin-7-yl)-N-(pyren-1-ylmethyl)acetamide (compound 1D), stains similarly well amyloid fibrils formed by Aβ1-42, α-synuclein, or amylin, provides a sensitivity only slightly lower than that of thioflavin T, displays a large Stokes shift, allows efficient excitation in the UV spectral region, and is not cytotoxic. Compound 1D can also stain amyloid fibrils formed by staphylococcal peptides present in biofilm matrices and can be used to distinguish, by direct staining, Staphylococcus aureus biofilms containing amyloid-forming phenol-soluble modulins from those lacking them. Graphical abstract ᅟ.
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Criscuolo F, Taurino I, Stradolini F, Carrara S, De Micheli G. Highly-stable Li + ion-selective electrodes based on noble metal nanostructured layers as solid-contacts. Anal Chim Acta 2018; 1027:22-32. [PMID: 29866266 DOI: 10.1016/j.aca.2018.04.062] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/16/2018] [Accepted: 04/23/2018] [Indexed: 10/16/2022]
Abstract
Nowadays the development of stable and highly efficient Solid-Contact Ion-Selective Electrodes (SC-ISEs) attracts much attention in the research community because of the great expansion of portable analytical devices. In this work, we present highly stable Li+ all-solid-state ISEs exploiting noble metals nanostructures as ion-to-electron transducers. The detection of lithium is essential for therapeutic drug monitoring of bipolar patients. In addition, greater environmental exposure to this ion is occurring due to the large diffusion of lithium-ion batteries. However, only a limited number of SC Li+ ISEs already exists in literature based on Conductive Polymers (CPs) and carbon nanotubes. The use of noble metals for ion-to-electron transduction offers considerable advantages over CPs and carbon materials, including fast and conformal one-step deposition by electrochemical means, non-toxicity and high stability. We investigate for the first time the use of gold nanocorals obtained by means of a one-step electrodeposition process to improve sensor performance and we compare it to all-solid-state ISEs based on electrodeposited platinum nanoflowers. In addition, the effect of substrate electrode material, membrane thickness and conditioning concentration on the potentiometric response is carefully analysed. Scanning Electron Microscopy (SEM) and Current Reversal Chronopotentiometry (CRC) techniques are used to characterize the morphology and the electrochemical behaviour of the different ISEs. The use of nanostructured gold and platinum contacts allows the increase of the SC capacitance by one or two orders of magnitude, respectively, with respect to the flat metal, while the SC resistance is significantly reduced. We show that the microfabricated sensors offer Nernstian behaviour (58.7±0.8 mV/decade) in the activity range from 10-5 to 0.1 M, with short response time (∼15 s) and small potential drift during CRC measurements (dEdt=3×10-5±2×10-5 V/s). The exceptional response stability is verified also when no potential is applied. The sensor shows high selectivity towards all clinically important ions, with values very similar to conventional ISEs. Furthermore, to our knowledge, the selectivity towards Ca+2 is the best ever reported for SC-ISEs. In conclusion, the present study opens up new interesting perspectives towards the development of simple and reproducible fabrication protocols to obtain high-quality and high-stability all-solid-state ISEs.
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Affiliation(s)
| | - Irene Taurino
- Laboratory of Integrated System, EPFL, CH-1015, Lausanne, Switzerland
| | | | - Sandro Carrara
- Laboratory of Integrated System, EPFL, CH-1015, Lausanne, Switzerland
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Wang S, Wu Y, Gu Y, Li T, Luo H, Li LH, Bai Y, Li L, Liu L, Cao Y, Ding H, Zhang T. Wearable Sweatband Sensor Platform Based on Gold Nanodendrite Array as Efficient Solid Contact of Ion-Selective Electrode. Anal Chem 2017; 89:10224-10231. [DOI: 10.1021/acs.analchem.7b01560] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Shuqi Wang
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Yongjin Wu
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Yang Gu
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Tie Li
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Hui Luo
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Lian-Hui Li
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Yuanyuan Bai
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Lili Li
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Lin Liu
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Yudong Cao
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Haiyan Ding
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
| | - Ting Zhang
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 398 Ruoshui Road, Suzhou, 215123, People’s Republic of China
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11
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Lydon BR, Germann A, Yang JY. Chemical modification of gold electrodes via non-covalent interactions. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00010j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Chemically modifying electrode surfaces with redox active molecular complexes is an effective route to fabricating tailored functional materials.
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Affiliation(s)
- Brian R. Lydon
- Department of Chemistry
- University of California
- Irvine
- USA
| | - Alex Germann
- Department of Chemistry
- University of California
- Irvine
- USA
| | - Jenny Y. Yang
- Department of Chemistry
- University of California
- Irvine
- USA
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12
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Affiliation(s)
- Eric Bakker
- Department of Inorganic and
Analytical Chemistry, University of Geneva, 1211 Geneva, Switzerland
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13
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Mikhelson KN, Peshkova MA. Advances and trends in ionophore-based chemical sensors. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4506] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Iannazzo D, Mazzaglia A, Scala A, Pistone A, Galvagno S, Lanza M, Riccucci C, Ingo GM, Colao I, Sciortino MT, Valle F, Piperno A, Grassi G. β-Cyclodextrin-grafted on multiwalled carbon nanotubes as versatile nanoplatform for entrapment of guanine-based drugs. Colloids Surf B Biointerfaces 2014; 123:264-70. [DOI: 10.1016/j.colsurfb.2014.09.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 09/01/2014] [Accepted: 09/14/2014] [Indexed: 11/29/2022]
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Wang Y, Xue C, Li X, Du X, Wang Z, Ma G, Hao X. Facile Preparation of α-Zirconium Phosphate/Polyaniline Hybrid Film for Detecting Potassium Ion in a Wide Linear Range. ELECTROANAL 2014. [DOI: 10.1002/elan.201300623] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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16
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Hayashida O, Kaku Y. Synthesis of dabsyl-appended cyclophanes and their heterodimer formation with pyrene-appended cyclophanes. J Org Chem 2013; 78:10437-42. [PMID: 24047400 DOI: 10.1021/jo4018843] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
As a quencher-type host, dabsyl-appended cyclophanes bearing positively and negatively charged side chains (1a and 1b, respectively) were synthesized. Formation of cyclophane heterodimers of 1a with anionic fluorescent cyclophane bearing a pyrene moiety 2b was confirmed by fluorescence titration experiments. The 1:1 binding constant (K) of 1a toward 2b was calculated to be 1.6 × 10(5) M(-1). On the other hand, almost no complexation affinity of 1a toward cationic analogue of fluorescent cyclophane 2a was confirmed by the identical methods, indicating that electrostatic interactions became effective in the formation of cyclophane heterodimers. In addition, van't Hoff analysis applied to the temperature-dependent K values for the heterodimer formation gave negative enthalpy (ΔH) and entropy changes (ΔS). The large and negative ΔH values as well as small and also negative ΔS values showed that the complexation is an exothermic and enthalpy-controlled but not entropy-driven process. A similar trend of molecular recognition was also confirmed for formation of cyclophane heterodimers of 1b with 2a by the identical methods.
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Affiliation(s)
- Osamu Hayashida
- Department of Chemistry, Faculty of Science, Fukuoka University , Nanakuma 8-19-1, Fukuoka 814-0180, Japan
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Jung HY, Kim YL, Park S, Datar A, Lee H, Huang J, Somu S, Busnaina A, Jung YJ, Kwon Y. High-performance H2S detection by redox reactions in semiconducting carbon nanotube-based devices. Analyst 2013; 138:7206-11. [DOI: 10.1039/c3an01762a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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