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Xu J, Koh M, Minteer SD, Korzeniewski C. In Situ Confocal Raman Microscopy of Redox Polymer Films on Bulk Electrode Supports. ACS MEASUREMENT SCIENCE AU 2023; 3:127-133. [PMID: 37090254 PMCID: PMC10120033 DOI: 10.1021/acsmeasuresciau.2c00064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 05/03/2023]
Abstract
A spectroelectrochemical cell is described that enables confocal Raman microscopy studies of electrode-supported films. The confocal probe volume (∼1 μm3) was treated as a fixed-volume reservoir for the observation of potential-induced changes in chemical composition at microscopic locations within an ∼20 μm thickness layer of a redox polymer cast onto a 3 mm diameter carbon disk electrode. Using a Raman system with high collection efficiency and wavelength reproducibility, spectral subtraction achieved excellent rejection of background interferences, opening opportunities for measuring within micrometer-scale thickness redox films on widely available, low-cost, and conventional carbon disk electrodes. The cell performance and spectral difference technique are demonstrated in experiments that detect transformations of redox-active molecules exchanged into electrode-supported ionomer membranes. The in situ measurements were sensitive to changes in the film oxidation state and swelling/deswelling of the polymer framework in response to the uptake and discharge of charge-compensating electrolyte ions. The studies lay a foundation for confocal Raman microscopy as a quantitative in situ probe of processes within electrode-immobilized redox polymers under development for a range of applications, including electrosynthesis, energy conversion, and chemical sensing.
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Affiliation(s)
- Jiahe Xu
- Department
of Chemistry and Biochemistry, Texas Tech
University, Lubbock, Texas79409-1061, United States
| | - Miharu Koh
- Department
of Chemistry, University of Utah, Salt City, Utah84112, United States
| | - Shelley D. Minteer
- Department
of Chemistry, University of Utah, Salt City, Utah84112, United States
| | - Carol Korzeniewski
- Department
of Chemistry and Biochemistry, Texas Tech
University, Lubbock, Texas79409-1061, United States
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2
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Zhang L, Ma Z, Fan Y, Jiao S, Yu Z, Chen X. Investigation of H 2O 2 Electrochemical Behavior on Ferricyanide-Confined Electrode Based on Ionic Liquid-Functionalized Silica-Mesostructured Cellular Foam. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27249028. [PMID: 36558160 PMCID: PMC9785782 DOI: 10.3390/molecules27249028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
In this work, ionic liquid (IL) of 1-propyl-3-methyl imidazolium chloride-functionalized silica-mesostructured cellular foam (MCF) was prepared. The obtained MCF-IL was used to construct the Fe(CN)63--confined electrode (MCF-IL-Fe(CN)63-/PVA) and H2O2 electrochemical behavior on the electrode was investigated. It was found that H2O2 was oxidized on the freshly prepared electrode while catalytically electro-reduced on the acid pretreated one. Cyclic voltametric results revealed that the real catalyst for catalytic reduction of H2O2 was Prussian blue (PB) rather than Fe(CN)63-. The electrocatalytic ability of the acid-pretreated MCF-IL-Fe(CN)63-/PVA electrode offered a wide linear range for H2O2 detection. The present study on H2O2 electrochemical behavior on an MCF-IL-Fe(CN)63-/PVA electrode might provide useful information for further developing integrated Fe(CN)63--mediated biosensors as H2O2 is extensively involved in the classic reaction containing oxidase enzymes.
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Affiliation(s)
- Ling Zhang
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Zhenkuan Ma
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Yun Fan
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Songlin Jiao
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Zhan Yu
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Xuwei Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box332, Shenyang 110819, China
- Correspondence:
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3
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Song Q, Li Q, Yan J, Song Y. Echem methods and electrode types of the current in vivo electrochemical sensing. RSC Adv 2022; 12:17715-17739. [PMID: 35765338 PMCID: PMC9199085 DOI: 10.1039/d2ra01273a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/02/2022] [Indexed: 11/21/2022] Open
Abstract
For a long time, people have been eager to realize continuous real-time online monitoring of biological compounds. Fortunately, in vivo electrochemical biosensor technology has greatly promoted the development of biological compound detection. This article summarizes the existing in vivo electrochemical detection technologies into two categories: microdialysis (MD) and microelectrode (ME). Then we summarized and discussed the electrode surface time, pollution resistance, linearity and the number of instances of simultaneous detection and analysis, the composition and characteristics of the sensor, and finally, we also predicted and prospected the development of electrochemical technology and sensors in vivo.
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Affiliation(s)
- Qiuye Song
- The Affiliated Zhangjiagang Hospital of Soochow University Zhangjiagang 215600 Jiangsu People's Republic of China +86 791 87802135 +86 791 87802135
| | - Qianmin Li
- Key Laboratory of Depression Animal Model Based on TCM Syndrome, Jiangxi Administration of Traditional Chinese Medicine, Key Laboratory of TCM for Prevention and Treatment of Brain Diseases with Cognitive Dysfunction, Jiangxi Province, Jiangxi University of Chinese Medicine 1688 Meiling Road Nanchang 330006 China
| | - Jiadong Yan
- The Affiliated Zhangjiagang Hospital of Soochow University Zhangjiagang 215600 Jiangsu People's Republic of China +86 791 87802135 +86 791 87802135
| | - Yonggui Song
- Key Laboratory of Depression Animal Model Based on TCM Syndrome, Jiangxi Administration of Traditional Chinese Medicine, Key Laboratory of TCM for Prevention and Treatment of Brain Diseases with Cognitive Dysfunction, Jiangxi Province, Jiangxi University of Chinese Medicine 1688 Meiling Road Nanchang 330006 China.,Key Laboratory of Pharmacodynamics and Safety Evaluation, Health Commission of Jiangxi Province, Nanchang Medical College 1688 Meiling Road Nanchang 330006 China
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4
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Wang L, Malpass-Evans R, Carta M, McKeown NB, Marken F. The immobilisation and reactivity of Fe(CN)63−/4− in an intrinsically microporous polyamine (PIM-EA-TB). J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04603-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
AbstractProtonation of the molecularly rigid polymer of intrinsic microporosity PIM-EA-TB can be coupled to immobilisation of Fe(CN)63−/4− (as well as immobilisation of Prussian blue) into 1–2 nm diameter channels. The resulting films provide redox-active coatings on glassy carbon electrodes. Uptake, transport, and retention of Fe(CN)63−/4− in the microporous polymer are strongly pH dependent requiring protonation of the PIM-EA-TB (pKA ≈ 4). Both Fe(CN)64− and Fe(CN)63− can be immobilised, but Fe(CN)64− appears to bind tighter to the polymer backbone presumably via bridging protons. Loss of Fe(CN)63−/4− by leaching into the aqueous solution phase becomes significant only at pH > 9 and is likely to be associated with hydroxide anions directly entering the microporous structure to combine with protons. This and the interaction of Fe(CN)63−/4− and protons within the molecularly rigid PIM-EA-TB host are suggested to be responsible for retention and relatively slow leaching processes. Electrocatalysis with immobilised Fe(CN)63−/4− is demonstrated for the oxidation of ascorbic acid.
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5
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Herrera SE, Agazzi ML, Cortez ML, Marmisollé WA, Tagliazucchi M, Azzaroni O. Redox-active polyamine-salt aggregates as multistimuli-responsive soft nanoparticles. Phys Chem Chem Phys 2020; 22:7440-7450. [PMID: 32215420 DOI: 10.1039/d0cp00077a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyamine-salt aggregates have become promising soft materials in nanotechnology due to their easy preparation process and pH-responsiveness. Here, we report the use of hexacyanoferrate(ii) and hexacyanoferrate(iii) as electroactive crosslinking agents for the formation of nanometer-sized redox-active polyamine-redox-salt aggregates (rPSA) in bulk suspension. This nanoplatform can be selectively assembled or disassembled under different stimuli such as redox environment, pH and ionic strength. By changing the charge of the building blocks, external triggers allow switching the system between two phase states: aggregate-free solution or colloidal rPSA dispersion. The stimuli-activated modulation of the assembly/disassembly processes opens a path to exploit rPSA in technologies based on smart nanomaterials.
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Affiliation(s)
- Santiago E Herrera
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata - CONICET, Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
| | - Maximiliano L Agazzi
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata - CONICET, Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
| | - M Lorena Cortez
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata - CONICET, Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
| | - Waldemar A Marmisollé
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata - CONICET, Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
| | - Mario Tagliazucchi
- Departamento de Química Inorgánica, Analítica y Química Física, INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón 2, Buenos Aires C1428EHA, Argentina
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata - CONICET, Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
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Zhang K, Xiong T, Wu F, Yue Q, Ji W, Yu P, Mao L. Real-time and in-situ intracellular ATP assay with polyimidazolium brush-modified nanopipette. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9715-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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7
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Ying YL, Wang J, Leach AR, Jiang Y, Gao R, Xu C, Edwards MA, Pendergast AD, Ren H, Weatherly CKT, Wang W, Actis P, Mao L, White HS, Long YT. Single-entity electrochemistry at confined sensing interfaces. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9716-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Wang X, Valldor M, Spielberg ET, Heinemann FW, Meyer K, Mudring AV. Paramagnetic iron-containing ionic liquid crystals. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Effect of Poly-l-Lysine Polycation on the Glucose Oxidase/Ferricyanide Composite-Based Second-Generation Blood Glucose Sensors. SENSORS 2019; 19:s19061448. [PMID: 30934546 PMCID: PMC6470914 DOI: 10.3390/s19061448] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/15/2019] [Accepted: 03/21/2019] [Indexed: 02/07/2023]
Abstract
Second-generation glucose biosensors are presently the mainstream commercial solution for blood glucose measurement of diabetic patients. Screen-printed carbon electrodes (SPCEs) are the most-used substrate for glucose testing strips. This study adopted hydrophilic and positively charged α-poly-l-lysine (αPLL) as the entrapment matrix for the immobilization of negatively charged glucose oxidase (GOx) and ferricyanide (FIC) on SPCEs to construct a disposable second-generation glucose biosensor. The αPLL modification is shown to facilitate the redox kinetics of FIC and ferrocyanide on the SPCEs. The SPCEs coated with 0.5 mM GOx, 99.5 mM FIC, and 5 mM αPLL had better sensitivity for glucose detection due to the appreciable effect of protonated αPLL on the promotion of electron transfer between GOx and FIC. Moreover, the SPCEs coated with 0.5 mM GOx, 99.5 mM FIC, and 5 mM αPLL were packaged as blood glucose testing strips for the measurement of glucose-containing human serum samples. The glucose testing strips had good linearity from 2.8 mM to 27.5 mM and a detection limit of 2.3 mM. Moreover, the 5 mM αPLL-based glucose testing strips had good long-term stability to maintain GOx activity in aging tests at 50 °C.
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10
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Yu Y, Wang P, Zhu X, Peng Q, Zhou Y, Yin T, Liang Y, Yin X. Combined determination of copper ions and β-amyloid peptide by a single ratiometric electrochemical biosensor. Analyst 2018; 143:323-331. [PMID: 29192910 DOI: 10.1039/c7an01683b] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper ions (Cu2+) play a critical role in biological processes and are directly involved in β-amyloid peptide (Aβ) aggregation, which is responsible for the occurrence and development of Alzheimer's disease (AD). Therefore, combined determination of Cu2+ and Aβ in one analytical system is of great significance to understand the exact nature of the AD event. This work presents a novel ratiometric electrochemical biosensor for the dual determination of Cu2+ and Aβ1-42. This unique sensor is based on a 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulphonate) (ABTS) and poly(diallyldimethylammonium chloride) (PDDA)-bi functionalized single-walled carbon nanotubes (ABTS-PDDA/CNTs) composite. The inclusion of ABTS not only enhanced the sensitivity, but it also acted as an inner reference molecule to improve detection accuracy. The specific recognition of Cu2+ was realized by neurokinin B (NKB) coatings on the ABTS-PDDA/CNTs surface to form a [CuII(NKB)2] complex with Cu2+. The ABTS-PDDA/CNTs-NKB modified electrode also displayed an excellent electrochemical response toward the Aβ1-42 monomer, when a certain amount of the Aβ1-42 monomer was added to Cu2+-contained PBS buffer, which was due to the release of Cu2+ from the [CuII(NKB)2] complex through Aβ binding to Cu2+. Meanwhile, our work showed that Cu2+ bound Aβ1-42 was concentration-dependent. Consequently, the presented electrochemical approach was capable of quantifying two important biological species associated with AD by one single biosensor, with the detection limits of 0.04 μM for Cu2+ and 0.5 ng mL-1 for Aβ1-42, respectively. Finally, the ratiometric electrode was successfully applied for monitoring Cu2+ and Aβ1-42 variations in plasma and hippocampus of normal and AD rats.
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Affiliation(s)
- Yanyan Yu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, Jiangsu, P.R. China.
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11
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Schneider S, Janssen C, Klindtworth E, Mergel O, Möller M, Plamper F. Influence of Polycation Composition on Electrochemical Film Formation. Polymers (Basel) 2018; 10:E429. [PMID: 30966464 PMCID: PMC6415213 DOI: 10.3390/polym10040429] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 12/15/2022] Open
Abstract
The effect of polyelectrolyte composition on the electrodeposition onto platinum is investigated using a counterion switching approach. Film formation of preformed polyelectrolytes is triggered by oxidation of hexacyanoferrates(II) (ferrocyanide), leading to polyelectrolyte complexes, which are physically crosslinked by hexacyanoferrate(III) (ferricyanide) ions due to preferential ferricyanide/polycation interactions. In this study, the electrodeposition of three different linear polyelectrolytes, namely quaternized poly[2-(dimethylamino)ethyl methacrylate] (i.e., poly{[2-(methacryloyloxy)ethyl]trimethylammonium chloride}; PMOTAC), quaternized poly[2-(dimethylamino)ethyl acrylate] (i.e., poly{[2-(acryloyloxy)ethyl]trimethylammonium chloride}; POTAC), quaternized poly[N-(3-dimethylaminopropyl)methacrylamide] (i.e., poly{[3-(methacrylamido)propyl]trimethylammonium chloride}; PMAPTAC) and different statistical copolymers of these polyelectrolytes with N-(3-aminopropyl)methacrylamide (APMA), are studied. Hydrodynamic voltammetry utilizing a rotating ring disk electrode (RRDE) shows the highest deposition efficiency DE for PMOTAC over PMAPTAC and over POTAC. Increasing incorporation of APMA weakens the preferred interaction of the quaternized units with the hexacyanoferrate(III) ions. At a sufficient APMA content, electrodeposition can thus be prevented. Additional electrochemical quartz crystal microbalance measurements reveal the formation of rigid polyelectrolyte films being highly crosslinked by the hexacyanoferrate(III) ions. Results indicate a different degree of water incorporation into these polyelectrolyte films. Hence, by adjusting the polycation composition, film properties can be tuned, while different chemistries can be incorporated into these electrodeposited thin hydrogel films.
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Affiliation(s)
- Sabine Schneider
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
| | - Corinna Janssen
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
| | - Elisabeth Klindtworth
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
| | - Olga Mergel
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
- Department of Biomedical Engineering-FB40, University of Groningen, University Medical Center Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Martin Möller
- DWI Leibniz-Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstr. 50, 52056 Aachen, Germany.
| | - Felix Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52056 Aachen, Germany.
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13
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Feng J, Huang P, Wu FY. Gold–platinum bimetallic nanoclusters with enhanced peroxidase-like activity and their integrated agarose hydrogel-based sensing platform for the colorimetric analysis of glucose levels in serum. Analyst 2017; 142:4106-4115. [DOI: 10.1039/c7an01343d] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Bimetallic Au–PtNCs with enhanced peroxidase-like activity were integrated into agarose hydrogels for direct visualization of glucose in human serum.
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Affiliation(s)
- Jiayu Feng
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | | | - Fang-Ying Wu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
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14
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Yan H, Zhang L, Yu P, Mao L. Sensitive and Fast Humidity Sensor Based on A Redox Conducting Supramolecular Ionic Material for Respiration Monitoring. Anal Chem 2016; 89:996-1001. [DOI: 10.1021/acs.analchem.6b04350] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hailong Yan
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Zhang
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Yu
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lanqun Mao
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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15
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Xiao T, Wu F, Hao J, Zhang M, Yu P, Mao L. In Vivo Analysis with Electrochemical Sensors and Biosensors. Anal Chem 2016; 89:300-313. [DOI: 10.1021/acs.analchem.6b04308] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tongfang Xiao
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems and Photochemistry, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fei Wu
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems and Photochemistry, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Hao
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems and Photochemistry, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meining Zhang
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems and Photochemistry, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Yu
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems and Photochemistry, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lanqun Mao
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Analytical Chemistry for Living Biosystems and Photochemistry, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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16
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Yu P, He X, Mao L. Tuning interionic interaction for highly selective in vivo analysis. Chem Soc Rev 2016; 44:5959-68. [PMID: 26505054 DOI: 10.1039/c5cs00082c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The development of highly selective methodologies to enable in vivo recording of chemical signals is of great importance for studying brain functions and brain activity mapping. However, the complexity of cerebral systems presents a great challenge in the development of chem/(bio)sensors that are capable of directly and selectively recording bioactive molecules involved in brain functions. As one of the most important and popular interactions in nature, interionic interaction constitutes the chemical essence of high specificity in natural systems, which inspires us to develop highly selective chem/(bio)sensors for in vivo analysis by precisely engineering interionic interaction in the in vivo sensing system. In this tutorial review, we focus on the recent progress in the tuning of interionic interaction to improve the selectivity of biosensors for in vivo analysis. The type and property of the interionic interaction is first introduced and several strategies to improve the selectivity of the biosensors, including enzyme-based electrochemical biosensors, aptamer-based electrochemical biosensors, and the strategies to recruit recognition molecules are reviewed. We also present an overview of the potential applications of the biosensors for in vivo analysis and thereby for physiological investigations. Finally, we present the major challenges and opportunities regarding the high selectivity of in vivo analysis based on tuning interionic interaction. We believe that this tutorial review provides critical insights for highly selective in vivo analysis and offers new concepts and strategies to understand brain chemistry.
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17
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Wang X, Li Q, Xu J, Wu S, Xiao T, Hao J, Yu P, Mao L. Rational Design of Bioelectrochemically Multifunctional Film with Oxidase, Ferrocene, and Graphene Oxide for Development of in Vivo Electrochemical Biosensors. Anal Chem 2016; 88:5885-91. [PMID: 27146343 DOI: 10.1021/acs.analchem.6b00720] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This study demonstrates a new strategy to develop in vivo electrochemical biosensors through rational design and simple formation of bioelectrochemically multifunctional film (BMF). The BMF is rationally designed by first efficiently incorporating oxidase, ferrocene mediator, and graphene oxide into polymaleimidostyrene/polystyrene (PMS/PS) matrix to form a homogeneous mixture and then simply formed by drop-coating the mixture onto solid conducting substrate. By using the as-formed BMF, electrochemical biosensors could be constructed with a technical simplicity and high reproducibility. To illustrate the BMF-based biosensors for in vivo applications, we directly couple the biosensors to in vivo microdialysis to establish an online electrochemical system (OECS) for in vivo monitoring of glucose in rat auditory cortex during salicylate-induced tinnitus model. The OECS with the BMF-based biosensor as the detector shows a linear response toward glucose within a concentration range from 50 to 500 μM with a detection limit of 10 μM (S/N = 3). Additionally, the OECS is stable and does not suffer from the interference from the electroactive species endogenously coexisting in the brain microdialysate. With the BMF-based OECS, the basal level of glucose in the microdialysate continuously sampled from rat auditory cortex is determined to be 120 ± 10 μM (n = 5). After the rats were administrated with salicylate to induce transient tinnitus, the microdialysate glucose concentration in the rat auditory cortex remarkably increased to 433 ± 190 μM (n = 5) at the time point of 1.5 h. This study essentially offers a new, technically simple and reproducible approach to development of in vivo electrochemical biosensors, which is envisaged to be relatively useful for understanding of the molecular basis of brain functions.
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Affiliation(s)
- Xiuyun Wang
- School of Chemistry, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology , Dalian 116024, China
| | - Qian Li
- School of Chemistry, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology , Dalian 116024, China
| | - Jingjing Xu
- School of Chemistry, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology , Dalian 116024, China
| | - Shuo Wu
- School of Chemistry, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology , Dalian 116024, China
| | - Tongfang Xiao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS) , Beijing 100190, China
| | - Jie Hao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS) , Beijing 100190, China
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS) , Beijing 100190, China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences (CAS) , Beijing 100190, China
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18
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Cheng H, Zhang L, He J, Guo W, Zhou Z, Zhang X, Nie S, Wei H. Integrated Nanozymes with Nanoscale Proximity for in Vivo Neurochemical Monitoring in Living Brains. Anal Chem 2016; 88:5489-97. [DOI: 10.1021/acs.analchem.6b00975] [Citation(s) in RCA: 244] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hanjun Cheng
- College
of Engineering and Applied Sciences, Nanjing National
Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China
- Collaborative
Innovation Center of Chemistry for Life Sciences, State Key Laboratory
of Analytical Chemistry for Life Science, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Lei Zhang
- College
of Engineering and Applied Sciences, Nanjing National
Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Jian He
- Department
of Radiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Wenjing Guo
- College
of Engineering and Applied Sciences, Nanjing National
Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Zhengyang Zhou
- Department
of Radiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Xuejin Zhang
- College
of Engineering and Applied Sciences, Nanjing National
Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Shuming Nie
- College
of Engineering and Applied Sciences, Nanjing National
Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China
- Department
of Biomedical Engineering, Emory University, Atlanta, Georgia 30322, United States
| | - Hui Wei
- College
of Engineering and Applied Sciences, Nanjing National
Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, China
- Collaborative
Innovation Center of Chemistry for Life Sciences, State Key Laboratory
of Analytical Chemistry for Life Science, Nanjing University, Nanjing, Jiangsu 210093, China
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19
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Gao B, Su L, Yang H, Shu T, Zhang X. Current control by electrode coatings formed by polymerization of dopamine at prussian blue-modified electrodes. Analyst 2016; 141:2067-71. [PMID: 26876689 DOI: 10.1039/c6an00132g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Electrode coating with polydopamine (PDA) is fast becoming a popular surface modification technique. In this study we report the investigation of the use of PDA as electrode coatings with Prussian blue (PB) as an electrode material model. The PB layer was galvanostatically deposited at an Au electrode, followed by PDA coating with the assistance of ammonium persulfate as an oxidant. The thickness of PDA coatings was measured to be ∼60 nm. Electrochemical characterization of the PDA-coated PB electrode revealed that the PDA coatings could stabilize the PB at neutral pH and allow the permeation of hydrogen peroxide (H2O2). Moreover, the PDA coatings were found to effectively exclude the common interfering compounds such as cysteine, ascorbic acid and uric acid, and exhibit selective electrocatalysis towards the electroreduction of H2O2. Accordingly, the PDA-coated PB electrode was applied for determination of H2O2 released from live cells.
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Affiliation(s)
- Bowen Gao
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Lei Su
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Hankun Yang
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Tong Shu
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Xueji Zhang
- Research Center for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
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20
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21
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Zhang Z, Xiao T, Hao J, Yu P, Ohsaka T, Mao L. An Online Electrochemical System for Continuous Measurement of Glutamate with Signal Amplification by Enzymatic Substrate Cycling. ELECTROANAL 2015. [DOI: 10.1002/elan.201500122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Dezfuli AS, Ganjali MR, Norouzi P, Faridbod F. Facile sonochemical synthesis and electrochemical investigation of ceria/graphene nanocomposites. J Mater Chem B 2015; 3:2362-2370. [DOI: 10.1039/c4tb01847h] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have developed a self-assembly approach to anchor CeO2 nanoparticles onto reduced graphene oxide (RGO) through a sonochemical method. We found that a suitable loading content of CeO2 on RGO can induce a synergistic effect for optimizing the electro-catalytic activity of the nanocomposites.
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Affiliation(s)
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry
- Faculty of Chemistry
- University of Tehran
- Tehran
- Iran
| | - Parviz Norouzi
- Center of Excellence in Electrochemistry
- Faculty of Chemistry
- University of Tehran
- Tehran
- Iran
| | - Farnoush Faridbod
- Center of Excellence in Electrochemistry
- Faculty of Chemistry
- University of Tehran
- Tehran
- Iran
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23
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Zhang Z, Hao J, Xiao T, Yu P, Mao L. Online electrochemical systems for continuous neurochemical measurements with low-potential mediator-based electrochemical biosensors as selective detectors. Analyst 2015; 140:5039-47. [DOI: 10.1039/c5an00593k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This study demonstrates a new strategy to develop online electrochemical systems (OECSs) for continuously monitoring neurochemicals by efficiently integrating in vivo microdialysis with an oxidase-based electrochemical biosensor with low-potential electron mediators to shuttle the electron transfer of the oxidases.
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Affiliation(s)
- Zipin Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- The Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Jie Hao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- The Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Tongfang Xiao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- The Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- The Chinese Academy of Sciences (CAS)
- Beijing 100190
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- The Chinese Academy of Sciences (CAS)
- Beijing 100190
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24
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Wang Y, Zhuang Q, Ni Y. Fabrication of riboflavin electrochemical sensor based on homoadenine single-stranded DNA/molybdenum disulfide–graphene nanocomposite modified gold electrode. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2014.10.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Yu P, He X, Zhang L, Mao L. Dual recognition unit strategy improves the specificity of the adenosine triphosphate (ATP) aptamer biosensor for cerebral ATP assay. Anal Chem 2014; 87:1373-80. [PMID: 25495279 DOI: 10.1021/ac504249k] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Adenosine triphosphate (ATP) aptamer has been widely used as a recognition unit for biosensor development; however, its relatively poor specificity toward ATP against adenosine-5'-diphosphate (ADP) and adenosine-5'-monophosphate (AMP) essentially limits the application of the biosensors in real systems, especially in the complex cerebral system. In this study, for the first time, we demonstrate a dual recognition unit strategy (DRUS) to construct a highly selective and sensitive ATP biosensor by combining the recognition ability of aptamer toward A nucleobase and of polyimidazolium toward phosphate. The biosensors are constructed by first confining the polyimidazolium onto a gold surface by surface-initiated atom transfer radical polymerization (SI-ATRP), and then the aptamer onto electrode surface by electrostatic self-assembly to form dual-recognition-unit-functionalized electrodes. The constructed biosensor based on DRUS not only shows an ultrahigh sensitivity toward ATP with a detection limit down to the subattomole level but also an ultrahigh selectivity toward ATP without interference from ADP and AMP. The constructed biosensor is used for selective and sensitive sensing of the extracellular ATP in the cerebral system by combining in vivo microdialysis and can be used as a promising neurotechnology to probing cerebral ATP concentration.
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Affiliation(s)
- Ping Yu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, The Chinese Academy of Sciences , Beijing 100190, China
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26
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Sieben J, Ansón-Casaos A, Montilla F, Martínez M, Morallón E. Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Zhang L, Qi H, Hao J, Yang L, Yu P, Mao L. Water-stable, adaptive, and electroactive supramolecular ionic material and its application in biosensing. ACS APPLIED MATERIALS & INTERFACES 2014; 6:5988-5995. [PMID: 24724737 DOI: 10.1021/am5011628] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Developing water-stable and adaptive supramolecular materials is of great importance in various research fields. Here, we demonstrate a new kind of water-stable, adaptive, and electroactive supramolecular ionic materials (SIM) that is formed from the aqueous solutions of imidazolium-based dication and dianionic dye (i.e., 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid), ABTS) through ionic self-assembly. The formed SIM not only shows good thermostability and unique optical and electrochemical properties that are raised from precursors of the SIM, but also exhibits good water-stability, salt-stability, and adaptive encapsulation properties toward some heterocyclic cationic dye molecules. UV-vis and FT-IR results demonstrate that this encapsulation property is essentially based on the electrostatic interactions between the guest dye molecules and ABTS in the SIM. The application of the SIM prepared here is illustrated by the development of a new electrochemical sensor for NADH sensing at a low potential. This study not only opens a new avenue to the preparation of the supramolecular materials, but also provides a versatile platform for electrochemical (bio)sensing.
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Affiliation(s)
- Li Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, the Chinese Academy of Sciences , Beijing 100190, P. R. China
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28
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Competitive electrochemical immunoassay for detection of β-amyloid (1–42) and total β-amyloid peptides using p-aminophenol redox cycling. Biosens Bioelectron 2014; 51:208-12. [DOI: 10.1016/j.bios.2013.07.047] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 07/23/2013] [Accepted: 07/24/2013] [Indexed: 12/11/2022]
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29
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Ma W, Jiang Q, Yu P, Yang L, Mao L. Zeolitic Imidazolate Framework-Based Electrochemical Biosensor for in Vivo Electrochemical Measurements. Anal Chem 2013; 85:7550-7. [DOI: 10.1021/ac401576u] [Citation(s) in RCA: 205] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Wenjie Ma
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Qin Jiang
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Lifen Yang
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
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30
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Lu X, Cheng H, Huang P, Yang L, Yu P, Mao L. Hybridization of bioelectrochemically functional infinite coordination polymer nanoparticles with carbon nanotubes for highly sensitive and selective in vivo electrochemical monitoring. Anal Chem 2013; 85:4007-13. [PMID: 23496088 DOI: 10.1021/ac303743a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This study demonstrates the formation of a three-dimensional conducting framework through hybridization of bioelectrochemically active infinite coordination polymer (ICP) nanoparticles with single-walled carbon nanotubes (SWNTs) for highly sensitive and selective in vivo electrochemical monitoring with combination with in vivo microdialysis. The bioelectrochemically active ICP nanoparticles are synthesized through the self-assembly process of NAD(+) and Tb(3+), in which all biosensing elements including an electrocatalyst (i.e., methylene green, MG), cofactor (i.e., β-nicotinamide adenine dinucleotide, NAD(+)), and enzyme (i.e., glucose dehydrogenase, GDH) are adaptively encapsulated. The ICP/SWNT-based biosensors are simply prepared by drop-coating the as-formed ICP/SWNT nanocomposite onto a glassy carbon substrate. Electrochemical studies demonstrate that the simply prepared ICP/SWNT-based biosensors exhibit excellent biosensing properties with a higher sensitivity and stability than the ICP-based biosensors prepared only with ICP nanoparticles (i.e., without hybridization of SWNTs). By using a GDH-based electrochemical biosensor as an example, we demonstrate a technically simple yet effective online electroanalytical platform for continuously monitoring glucose in the brain of guinea pigs with the ICP/SWNT-based biosensor as an online detector in a continuous-flow system combined with in vivo microdialysis. Under the experimental conditions employed here, the dynamic linear range for glucose with the ICP/SWNT-biosensor is from 50 to 1000 μM. Moreover, in vivo selectivity investigations with the biosensors prepared by the GDH-free ICPs reveal that ICP/SWNT-based biosensors are very selective for the measurement of glucose in the cerebral system. The basal level of glucose in the microdialysates from the striatum of guinea pigs is determined to be 0.31 ± 0.03 mM (n = 3). The study offers a simple route to the preparation of electrochemical biosensors, which is envisaged to be particularly useful for probing the chemical events involved in some physiological and pathological processes.
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Affiliation(s)
- Xulin Lu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
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31
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Qi H, Zhang L, Yang L, Yu P, Mao L. Anion-Exchange-Based Amperometric Assay for Heparin Using Polyimidazolium as Synthetic Receptor. Anal Chem 2013; 85:3439-45. [DOI: 10.1021/ac400201c] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hetong Qi
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Li Zhang
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Lifen Yang
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Ping Yu
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Lanqun Mao
- Beijing National Laboratory for Molecular Sciences,
Key Laboratory of Analytical Chemistry for Living Biosystems, Institute
of Chemistry, The Chinese Academy of Sciences (CAS), Beijing 100190, China
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32
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Cheng H, Yu P, Lu X, Lin Y, Ohsaka T, Mao L. Biofuel cell-based self-powered biogenerators for online continuous monitoring of neurochemicals in rat brain. Analyst 2013; 138:179-85. [DOI: 10.1039/c2an36385b] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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