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Wang Z, Liu R, Sun T, Li M, Ran N, Wang D, Wang Z. Revealing Hydrogen Spillover on 1T/2H MoS 2 Heterostructures for an Enhanced Hydrogen Evolution Reaction by Scanning Electrochemical Microscopy. Anal Chem 2024; 96:7618-7625. [PMID: 38687982 DOI: 10.1021/acs.analchem.4c00515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The in situ characterization of the heterostructure active sites during the hydrogen evolution reaction (HER) process and the direct elucidation of the corresponding catalytic structure-activity relationships are essential for understanding the catalytic mechanism and designing catalysts with optimized activity. Hence, exploring the underlying reasons behind the exceptional catalytic performance necessitates a detailed analysis. Herein, we employed scanning electrochemical microscopy (SECM) to in situ image the topography and local electrocatalytic activity of 1T/2H MoS2 heterostructures on mixed-phase molybdenum disulfide (MoS2) with 20 nm spatial resolution. Our measurements provide direct data about HER activity, enabling us to differentiate the superior catalytic performance of 1T/2H MoS2 heterostructures compared to other active sites on the MoS2 surface. Combining this spatially resolved electrochemical information with density functional theory calculations and numerical simulations enables us to reveal the existence of hydrogen spillover from the 1T MoS2 surface to 1T/2H MoS2 heterostructures. Furthermore, it has been verified that hydrogen spillover can significantly enhance the electrocatalytic activity of the heterostructures, in addition to its strong electronic interaction. This study not only contributes to the future investigation of electrochemical processes at nanoscale active sites on structurally complex electrocatalysts but also provides new design strategies for improving the catalytic activity of 2D electrocatalysts.
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Affiliation(s)
- Zhenyu Wang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao Application Technology Innovation Center of Photoelectric Biosensing for Clinical Diagnosis and Treatment, Shandong Sino-Japanese Centre for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao, Shandong 266071, China
| | - Rujia Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Tong Sun
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao Application Technology Innovation Center of Photoelectric Biosensing for Clinical Diagnosis and Treatment, Shandong Sino-Japanese Centre for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao, Shandong 266071, China
| | - Mengrui Li
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao Application Technology Innovation Center of Photoelectric Biosensing for Clinical Diagnosis and Treatment, Shandong Sino-Japanese Centre for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao, Shandong 266071, China
| | - Nian Ran
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dengchao Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Zonghua Wang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao Application Technology Innovation Center of Photoelectric Biosensing for Clinical Diagnosis and Treatment, Shandong Sino-Japanese Centre for Collaborative Research of Carbon Nanomaterials, Qingdao University, Qingdao, Shandong 266071, China
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2
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Motabar D, Li J, Payne GF, Bentley WE. Mediated electrochemistry for redox-based biological targeting: entangling sensing and actuation for maximizing information transfer. Curr Opin Biotechnol 2021; 71:137-144. [PMID: 34364305 DOI: 10.1016/j.copbio.2021.07.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/02/2021] [Accepted: 07/14/2021] [Indexed: 02/06/2023]
Abstract
Biology and electronics are both expert at receiving, analyzing, and responding to information, yet they use entirely different information processing paradigms. Biology processes information using networks that are intrinsically molecular while electronics process information through circuits that control the flow of electrons. There is great interest in coupling the molecular logic of biology with the electronic logic of technology, and we suggest that redox (reduction-oxidation) is a uniquely suited modality for interfacing biology with electronics. Specifically, redox is a native biological modality and is accessible to electronics through electrodes. We summarize recent advances in mediated electrochemistry to direct information transfer into biological systems intentionally altering function, exposing it for more advanced interpretation, which can dramatically expand the biotechnological toolbox.
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Affiliation(s)
- Dana Motabar
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, United States; Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, United States; Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742 United States
| | - Jinyang Li
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, United States; Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, United States; Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742 United States
| | - Gregory F Payne
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, United States; Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742 United States.
| | - William E Bentley
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, United States; Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, United States; Robert E. Fischell Institute for Biomedical Devices, University of Maryland, College Park, MD 20742 United States.
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3
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Zhao Z, Ozcan EE, VanArsdale E, Li J, Kim E, Sandler AD, Kelly DL, Bentley WE, Payne GF. Mediated Electrochemical Probing: A Systems-Level Tool for Redox Biology. ACS Chem Biol 2021; 16:1099-1110. [PMID: 34156828 DOI: 10.1021/acschembio.1c00267] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Biology uses well-known redox mechanisms for energy harvesting (e.g., respiration), biosynthesis, and immune defense (e.g., oxidative burst), and now we know biology uses redox for systems-level communication. Currently, we have limited abilities to "eavesdrop" on this redox modality, which can be contrasted with our abilities to observe and actuate biology through its more familiar ionic electrical modality. In this Perspective, we argue that the coupling of electrochemistry with diffusible mediators (electron shuttles) provides a unique opportunity to access the redox communication modality through its electrical features. We highlight previous studies showing that mediated electrochemical probing (MEP) can "communicate" with biology to acquire information and even to actuate specific biological responses (i.e., targeted gene expression). We suggest that MEP may reveal an extent of redox-based communication that has remained underappreciated in nature and that MEP could provide new technological approaches for redox biology, bioelectronics, clinical care, and environmental sciences.
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Affiliation(s)
- Zhiling Zhao
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
- Robert E. Fischell Biomedical Device Institute, University of Maryland, College Park, Maryland 20742, United States
| | - Evrim E. Ozcan
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
| | - Eric VanArsdale
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
- Robert E. Fischell Biomedical Device Institute, University of Maryland, College Park, Maryland 20742, United States
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Jinyang Li
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
- Robert E. Fischell Biomedical Device Institute, University of Maryland, College Park, Maryland 20742, United States
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Eunkyoung Kim
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
- Robert E. Fischell Biomedical Device Institute, University of Maryland, College Park, Maryland 20742, United States
| | - Anthony D. Sandler
- Department of General and Thoracic Surgery, Children’s National Hospital, Washington, D.C. 20010, United States
| | - Deanna L. Kelly
- Maryland Psychiatric Research Center, University of Maryland School of Medicine, Baltimore, Maryland 21228, United States
| | - William E. Bentley
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
- Robert E. Fischell Biomedical Device Institute, University of Maryland, College Park, Maryland 20742, United States
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, United States
| | - Gregory F. Payne
- Institute for Bioscience & Biotechnology Research, University of Maryland, College Park, Maryland 20742, United States
- Robert E. Fischell Biomedical Device Institute, University of Maryland, College Park, Maryland 20742, United States
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4
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MENG Y, ZHANG JW, YUE YP, HE JH, LI Y. Analysis of Facilitated Ion Transfer across Liquid-Liquid Interfaces Using Collision Electrochemisty. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/s1872-2040(20)60060-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Dorfi AE, Zhou S, West AC, Wright J, Esposito DV. Probing the Speed Limits of Scanning Electrochemical Microscopy with In situ Colorimetric Imaging. ChemElectroChem 2020. [DOI: 10.1002/celc.202000476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna E. Dorfi
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable EnergyColumbia University in the City of New York 500 W 120th Street New York NY 10027 USA
| | - Shijie Zhou
- Department of Electrical EngineeringColumbia University in the City of New York 500 W 120th Street New York NY 10027 USA
| | - Alan C. West
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable EnergyColumbia University in the City of New York 500 W 120th Street New York NY 10027 USA
| | - John Wright
- Department of Electrical EngineeringColumbia University in the City of New York 500 W 120th Street New York NY 10027 USA
| | - Daniel V. Esposito
- Department of Chemical Engineering, Columbia Electrochemical Energy Center, Lenfest Center for Sustainable EnergyColumbia University in the City of New York 500 W 120th Street New York NY 10027 USA
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6
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Liu D, Zeng X, Liu S, Wang S, Kang F, Li B. Application of Alternating Current Scanning Electrochemical Microscopy in Lithium‐Ion Batteries: Local Visualization of the Electrode Surface. ChemElectroChem 2019. [DOI: 10.1002/celc.201901431] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dongqing Liu
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Graduate School at ShenzhenTsinghua University Shenzhen 518055 China
- Sunwoda Electronic Company Limited Baoan District Shenzhen 518055 China
| | - Xiaojie Zeng
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Graduate School at ShenzhenTsinghua University Shenzhen 518055 China
- Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Shuai Liu
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Graduate School at ShenzhenTsinghua University Shenzhen 518055 China
- Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Shuwei Wang
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Graduate School at ShenzhenTsinghua University Shenzhen 518055 China
- Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua University Beijing 100084 China
| | - Feiyu Kang
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Graduate School at ShenzhenTsinghua University Shenzhen 518055 China
- Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua University Beijing 100084 China
- Shenzhen Environmental Science and New Energy Technology Engineering LaboratoryTsinghua-Berkeley Shenzhen Institute Shenzhen 518055 China
| | - Baohua Li
- Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Graduate School at ShenzhenTsinghua University Shenzhen 518055 China
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7
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Direct high-resolution mapping of electrocatalytic activity of semi-two-dimensional catalysts with single-edge sensitivity. Proc Natl Acad Sci U S A 2019; 116:11618-11623. [PMID: 31127040 DOI: 10.1073/pnas.1821091116] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The catalytic activity of low-dimensional electrocatalysts is highly dependent on their local atomic structures, particularly those less-coordinated sites found at edges and corners; therefore, a direct probe of the electrocatalytic current at specified local sites with true nanoscopic resolution has become critically important. Despite the growing availability of operando imaging tools, to date it has not been possible to measure the electrocatalytic activities from individual material edges and directly correlate those with the local structural defects. Herein, we show the possibility of using feedback and generation/collection modes of operation of the scanning electrochemical microscope (SECM) to independently image the topography and local electrocatalytic activity with 15-nm spatial resolution. We employed this operando microscopy technique to map out the oxygen evolution activity of a semi-2D nickel oxide nanosheet. The improved resolution and sensitivity enables us to distinguish the higher activities of the materials' edges from that of the fully coordinated surfaces in operando The combination of spatially resolved electrochemical information with state-of-the-art electron tomography, that unravels the 3D complexity of the edges, and ab initio calculations allows us to reveal the intricate coordination dependent activity along individual edges of the semi-2D material that is not achievable by other methods. The comparison of the simulated line scans to the experimental data suggests that the catalytic current density at the nanosheet edge is ∼200 times higher than that at the NiO basal plane.
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8
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Zhang S, Li M, Su B, Shao Y. Fabrication and Use of Nanopipettes in Chemical Analysis. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2018; 11:265-286. [PMID: 29894227 DOI: 10.1146/annurev-anchem-061417-125840] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This review summarizes progress in the fabrication, modification, characterization, and applications of nanopipettes since 2010. A brief history of nanopipettes is introduced, and the details of fabrication, modification, and characterization of nanopipettes are provided. Applications of nanopipettes in chemical analysis are the focus in several cases, including recent progress in imaging; in the study of single molecules, single nanoparticles, and single cells; in fundamental investigations of charge transfer (ion and electron) reactions at liquid/liquid interfaces; and as hyphenated techniques combined with other methods to study the mechanisms of complicated electrochemical reactions and to conduct bioanalysis.
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Affiliation(s)
- Shudong Zhang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
| | - Mingzhi Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
| | - Bin Su
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China;
| | - Yuanhua Shao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
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9
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Advances and Perspectives in Chemical Imaging in Cellular Environments Using Electrochemical Methods. CHEMOSENSORS 2018. [DOI: 10.3390/chemosensors6020024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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10
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Salt-Assisted Ultrasonicated De-Aggregation and Advanced Redox Electrochemistry of Detonation Nanodiamond. MATERIALS 2017; 10:ma10111292. [PMID: 29125547 PMCID: PMC5706239 DOI: 10.3390/ma10111292] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/19/2017] [Accepted: 10/19/2017] [Indexed: 12/22/2022]
Abstract
Nanodiamond particles form agglomerates in the dry powder state and this poses limitation to the accessibility of their diamond-like core thus dramatically impacting their technological advancement. In this work, we report de-agglomeration of nanodiamond (ND) by using a facile technique namely, salt-assisted ultrasonic de-agglomeration (SAUD). Utilizing ultrasound energy and ionic salts (sodium chloride and sodium acetate), SAUD is expected to break apart thermally treated nanodiamond aggregates (~50-100 nm) and produce an aqueous slurry of de-aggregated stable colloidal nanodiamond dispersions by virtue of ionic interactions and electrostatic stabilization. Moreover, the SAUD technique neither has toxic chemicals nor is it difficult to remove impurities and therefore the isolated nanodiamonds produced are exceptionally suited for engineered nanocarbon for mechanical (composites, lubricants) and biomedical (bio-labeling, biosensing, bioimaging, theranostic) applications. We characterized the microscopic structure using complementary techniques including transmission electron microscopy combined with selected-area electron diffraction, optical and vibrational spectroscopy. We immobilized SAUD produced NDs on boron-doped diamond electrodes to investigate fundamental electrochemical properties. They included surface potential (or Fermi energy level), carrier density and mapping electrochemical (re)activity using advanced scanning electrochemical microscopy in the presence of a redox-active probe, with the aim of understanding the surface redox chemistry and the interfacial process of isolated nanodiamond particles as opposed to aggregated and untreated nanoparticles. The experimental findings are discussed in terms of stable colloids, quantum confinement and predominantly surface effects, defect sites (sp²-bonded C and unsaturated bonds), inner core (sp³-bonded C)/outer shell (sp²-bonded C) structure, and surface functionality. Moreover, the surface electronic states give rise to midgap states which serve as electron donors (or acceptors) depending upon the bonding (or antibonding). These are important as electroanalytical platforms for various electrocatalytic processes.
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11
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Chen R, Balla RJ, Lima A, Amemiya S. Characterization of Nanopipet-Supported ITIES Tips for Scanning Electrochemical Microscopy of Single Solid-State Nanopores. Anal Chem 2017; 89:9946-9952. [PMID: 28819966 PMCID: PMC5683184 DOI: 10.1021/acs.analchem.7b02269] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nanoscale scanning electrochemical microscopy (SECM) is a powerful scanning probe technique that enables high-resolution imaging of chemical processes at single nanometer-sized objects. However, it has been a challenging task to quantitatively understand nanoscale SECM images, which requires accurate characterization of the size and geometry of nanoelectrode tips. Herein, we address this challenge through transmission electron microscopy (TEM) of quartz nanopipets for SECM imaging of single solid-state nanopores by using nanopipet-supported interfaces between two immiscible electrolyte solutions (ITIES) as tips. We take advantage of the high resolution of TEM to demonstrate that laser-pulled quartz nanopipets reproducibly yield not only an extremely small tip diameter of ∼30 nm, but also a substantial tip roughness of ∼5 nm. The size and roughness of a nanopipet can be reliably determined by optimizing the intensity of the electron beam not to melt or deform the quartz nanotip without a metal coating. Electrochemically, the nanoscale ITIES supported by a rough nanotip gives higher amperometric responses to tetrabutylammonium than expected for a 30 nm diameter disc tip. The finite element simulation of sphere-cap ITIES tips accounts for the high current responses and also reveals that the SECM images of 100 nm diameter Si3N4 nanopores are enlarged along the direction of the tip scan. Nevertheless, spatial resolution is not significantly compromised by a sphere-cap tip, which can be scanned in closer proximity to the substrate. This finding augments the utility of a protruded tip, which can be fabricated and miniaturized more readily to facilitate nanoscale SECM imaging.
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Affiliation(s)
- Ran Chen
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania, 15260, United States
| | - Ryan J. Balla
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania, 15260, United States
| | - Alex Lima
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania, 15260, United States
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo, SP, Brazil
| | - Shigeru Amemiya
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania, 15260, United States
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12
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Oleinick A, Yu Y, Svir I, Mirkin MV, Amatore C. Theory and Simulations for the Electron-Transfer/Ion-Transfer Mode of Scanning Electrochemical Microscopy in the Presence or Absence of Homogenous Kinetics. ChemElectroChem 2016. [DOI: 10.1002/celc.201600583] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Alexander Oleinick
- CNRS UMR 8640 PASTEUR, Ecole Normale Supérieure-PSL Research University; Département de Chimie; Sorbonne Universités-UPMC University Paris 06; 24, rue Lhomond 75005 Paris France
| | - Yun Yu
- Department of Chemistry and Biochemistry; Queens College and the Graduate Center, CUNY; Flushing NY 11367 USA
| | - Irina Svir
- CNRS UMR 8640 PASTEUR, Ecole Normale Supérieure-PSL Research University; Département de Chimie; Sorbonne Universités-UPMC University Paris 06; 24, rue Lhomond 75005 Paris France
| | - Michael V. Mirkin
- Department of Chemistry and Biochemistry; Queens College and the Graduate Center, CUNY; Flushing NY 11367 USA
| | - Christian Amatore
- CNRS UMR 8640 PASTEUR, Ecole Normale Supérieure-PSL Research University; Département de Chimie; Sorbonne Universités-UPMC University Paris 06; 24, rue Lhomond 75005 Paris France
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13
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Zheng Q, Yang Y, Yan Y, Yu Y, Liu Y, Gao W, Ding K, Shao H. The long-range effect induced by untying hydrogen bonds for single cell test using SECM. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.04.174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Ummadi JG, Downs C, Joshi VS, Ferracane J, Koley D. Carbon-Based Solid-State Calcium Ion-Selective Microelectrode and Scanning Electrochemical Microscopy: A Quantitative Study of pH-Dependent Release of Calcium Ions from Bioactive Glass. Anal Chem 2016; 88:3218-26. [PMID: 26861499 PMCID: PMC4873256 DOI: 10.1021/acs.analchem.5b04614] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solid-state ion-selective electrodes are used as scanning electrochemical microscope (SECM) probes because of their inherent fast response time and ease of miniaturization. In this study, we report the development of a solid-state, low-poly(vinyl chloride), carbon-based calcium ion-selective microelectrode (Ca(2+)-ISME), 25 μm in diameter, capable of performing an amperometric approach curve and serving as a potentiometric sensor. The Ca(2+)-ISME has a broad linear response range of 5 μM to 200 mM with a near Nernstian slope of 28 mV/log[a(Ca(2+))]. The calculated detection limit for Ca(2+)-ISME is 1 μM. The selectivity coefficients of this Ca(2+)-ISME are log K(Ca(2+),A) = -5.88, -5.54, and -6.31 for Mg(2+), Na(+), and K(+), respectively. We used this new type of Ca(2+)-ISME as an SECM probe to quantitatively map the chemical microenvironment produced by a model substrate, bioactive glass (BAG). In acidic conditions (pH 4.5), BAG was found to increase the calcium ion concentration from 0.7 mM ([Ca(2+)] in artificial saliva) to 1.4 mM at 20 μm above the surface. In addition, a solid-state dual SECM pH probe was used to correlate the release of calcium ions with the change in local pH. Three-dimensional pH and calcium ion distribution mapping were also obtained by using these solid-state probes. The quantitative mapping of pH and Ca(2+) above the BAG elucidates the effectiveness of BAG in neutralizing and releasing calcium ions in acidic conditions.
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Affiliation(s)
- Jyothir Ganesh Ummadi
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Corey Downs
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Vrushali S. Joshi
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jack Ferracane
- Department of Restorative Dentistry, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Dipankar Koley
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
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15
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Alvarez de Eulate E, Strutwolf J, Liu Y, O’Donnell K, Arrigan DWM. An Electrochemical Sensing Platform Based on Liquid–Liquid Microinterface Arrays Formed in Laser-Ablated Glass Membranes. Anal Chem 2016; 88:2596-604. [DOI: 10.1021/acs.analchem.5b03091] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Eva Alvarez de Eulate
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Jörg Strutwolf
- Department
of Chemistry, Institute of Organic Chemistry, University of Tübingen, 72074 Tübingen, Germany
| | - Yang Liu
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Kane O’Donnell
- Department
of Physics, Astronomy and Medical Radiation Science, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
| | - Damien W. M. Arrigan
- Nanochemistry
Research Institute, Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia
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16
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Chang L, Hu J, Chen F, Chen Z, Shi J, Yang Z, Li Y, Lee LJ. Nanoscale bio-platforms for living cell interrogation: current status and future perspectives. NANOSCALE 2016; 8:3181-3206. [PMID: 26745513 DOI: 10.1039/c5nr06694h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The living cell is a complex entity that dynamically responds to both intracellular and extracellular environments. Extensive efforts have been devoted to the understanding intracellular functions orchestrated with mRNAs and proteins in investigation of the fate of a single-cell, including proliferation, apoptosis, motility, differentiation and mutations. The rapid development of modern cellular analysis techniques (e.g. PCR, western blotting, immunochemistry, etc.) offers new opportunities in quantitative analysis of RNA/protein expression up to a single cell level. The recent entries of nanoscale platforms that include kinds of methodologies with high spatial and temporal resolution have been widely employed to probe the living cells. In this tutorial review paper, we give insight into background introduction and technical innovation of currently reported nanoscale platforms for living cell interrogation. These highlighted technologies are documented in details within four categories, including nano-biosensors for label-free detection of living cells, nanodevices for living cell probing by intracellular marker delivery, high-throughput platforms towards clinical current, and the progress of microscopic imaging platforms for cell/tissue tracking in vitro and in vivo. Perspectives for system improvement were also discussed to solve the limitations remains in current techniques, for the purpose of clinical use in future.
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Affiliation(s)
- Lingqian Chang
- NSF Nanoscale Science and Engineering Center (NSEC), The Ohio State University, Columbus, OH 43212, USA.
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17
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Momotenko D, McKelvey K, Kang M, Meloni GN, Unwin PR. Simultaneous Interfacial Reactivity and Topography Mapping with Scanning Ion Conductance Microscopy. Anal Chem 2016; 88:2838-46. [DOI: 10.1021/acs.analchem.5b04566] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Dmitry Momotenko
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Kim McKelvey
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Minkyung Kang
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Gabriel N. Meloni
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Patrick R. Unwin
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
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18
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Rastgar S, Pilarski M, Wittstock G. A polarized liquid–liquid interface meets visible light-driven catalytic water oxidation. Chem Commun (Camb) 2016; 52:11382-11385. [DOI: 10.1039/c6cc04275a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A nanostructured BiVO4photocatalyst assembled at a chemically polarized liquid–liquid interface generates an efficient amount of O2with a [Co(bpy)3]3+scavenger in the organic phase.
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Affiliation(s)
- Shokoufeh Rastgar
- Institute of Chemistry
- Carl von Ossietzky University of Oldenburg
- D-26111 Oldenburg
- Germany
- Hanse-Wissenschaftskolleg
| | - Martin Pilarski
- Institute of Chemistry
- Carl von Ossietzky University of Oldenburg
- D-26111 Oldenburg
- Germany
| | - Gunther Wittstock
- Institute of Chemistry
- Carl von Ossietzky University of Oldenburg
- D-26111 Oldenburg
- Germany
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19
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Affiliation(s)
- Eric Bakker
- Department of Inorganic and
Analytical Chemistry, University of Geneva, 1211 Geneva, Switzerland
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20
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Zhou M, Yu Y, Blanchard PY, Mirkin MV. Surface Patterning Using Diazonium Ink Filled Nanopipette. Anal Chem 2015; 87:10956-62. [DOI: 10.1021/acs.analchem.5b02784] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Min Zhou
- Department
of Chemistry and Biochemistry, Queens College, CUNY, Flushing, New York 11367, United States
- The Graduate Center of CUNY, New York, New York 10016, United States
| | - Yun Yu
- Department
of Chemistry and Biochemistry, Queens College, CUNY, Flushing, New York 11367, United States
- The Graduate Center of CUNY, New York, New York 10016, United States
| | - Pierre-Yves Blanchard
- Department
of Chemistry and Biochemistry, Queens College, CUNY, Flushing, New York 11367, United States
- The Graduate Center of CUNY, New York, New York 10016, United States
| | - Michael V. Mirkin
- Department
of Chemistry and Biochemistry, Queens College, CUNY, Flushing, New York 11367, United States
- The Graduate Center of CUNY, New York, New York 10016, United States
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21
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Shen M, Colombo ML. Electrochemical nanoprobes for the chemical detection of neurotransmitters. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2015; 7:7095-7105. [PMID: 26327927 PMCID: PMC4551492 DOI: 10.1039/c5ay00512d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Neurotransmitters, acting as chemical messengers, play an important role in neurotransmission, which governs many functional aspects of nervous system activity. Electrochemical probes have proven a very useful technique to study neurotransmission, especially to quantify and qualify neurotransmitters. With the emerging interests in probing neurotransmission at the level of single cells, single vesicles, as well as single synapses, probes that enable detection of neurotransmitters at the nanometer scale become vitally important. Electrochemical nanoprobes have been successfully employed in nanometer spatial resolution imaging of single nanopores of Si membrane and single Au nanoparticles, providing both topographical and chemical information, thus holding great promise for nanometer spatial study of neurotransmission. Here we present the current state of electrochemical nanoprobes for chemical detection of neurotransmitters, focusing on two types of nanoelectrodes, i.e. carbon nanoelectrode and nano-ITIES pipet electrode.
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Affiliation(s)
- Mei Shen
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Matthews Avenue, Urbana, Illinois 61801, USA. Tel: +1 (217) 300 3587
| | - Michelle L. Colombo
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Matthews Avenue, Urbana, Illinois 61801, USA. Tel: +1 (217) 300 3587
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22
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Zhou M, Yu Y, Hu K, Mirkin MV. Nanoelectrochemical Approach To Detecting Short-Lived Intermediates of Electrocatalytic Oxygen Reduction. J Am Chem Soc 2015; 137:6517-23. [DOI: 10.1021/ja512482n] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Min Zhou
- Department of Chemistry and
Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
| | - Yun Yu
- Department of Chemistry and
Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
| | - Keke Hu
- Department of Chemistry and
Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
| | - Michael V. Mirkin
- Department of Chemistry and
Biochemistry, Queens College, City University of New York, Flushing, New York 11367, United States
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23
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Zhang Y, Xu S, Qian Y, Yang X, Li Y. Preparation, electrochemical responses and sensing application of Au disk nanoelectrodes down to 5 nm. RSC Adv 2015. [DOI: 10.1039/c5ra14777h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Single Au nano-disk nanoelectrodes with the radii down to 5 nm have been prepared, which can be used to measure ferritin molecules in the amount of ∼3900 molecules or 6.1 zmol.
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Affiliation(s)
- Yaoyao Zhang
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Shen Xu
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - YuanYuan Qian
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Xiaosong Yang
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
| | - Yongxin Li
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
- China
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24
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Hu K, Wang Y, Cai H, Mirkin MV, Gao Y, Friedman G, Gogotsi Y. Open carbon nanopipettes as resistive-pulse sensors, rectification sensors, and electrochemical nanoprobes. Anal Chem 2014; 86:8897-901. [PMID: 25160727 DOI: 10.1021/ac5022908] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Nanometer-sized glass and quartz pipettes have been widely used as a core of chemical sensors, patch clamps, and scanning probe microscope tips. Many of those applications require the control of the surface charge and chemical state of the inner pipette wall. Both objectives can be attained by coating the inner wall of a quartz pipette with a nanometer-thick layer of carbon. In this letter, we demonstrate the possibility of using open carbon nanopipettes (CNP) produced by chemical vapor deposition as resistive-pulse sensors, rectification sensors, and electrochemical nanoprobes. By applying a potential to the carbon layer, one can change the surface charge and electrical double-layer at the pipette wall, which, in turn, affect the ion current rectification and adsorption/desorption processes essential for resistive-pulse sensors. CNPs can also be used as versatile electrochemical probes such as asymmetric bipolar nanoelectrodes and dual electrodes based on simultaneous recording of the ion current through the pipette and the current produced by oxidation/reduction of molecules at the carbon nanoring.
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Affiliation(s)
- Keke Hu
- Key Laboratory of Cluster Science (Ministry of Education of China) and Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology , Beijing 100081, P. R. China
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25
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26
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Yamada H, Haraguchi D, Yasunaga K. Fabrication and Characterization of a K+-Selective Nanoelectrode and Simultaneous Imaging of Topography and Local K+ Flux Using Scanning Electrochemical Microscopy. Anal Chem 2014; 86:8547-52. [DOI: 10.1021/ac502444y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Yamada
- Department of Applied Chemistry, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Daiki Haraguchi
- Department of Applied Chemistry, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Kenji Yasunaga
- Department of Applied Chemistry, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
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27
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Yu Y, Noël JM, Mirkin MV, Gao Y, Mashtalir O, Friedman G, Gogotsi Y. Carbon Pipette-Based Electrochemical Nanosampler. Anal Chem 2014; 86:3365-72. [DOI: 10.1021/ac403547b] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yun Yu
- Department of Chemistry and
Biochemistry, Queens College−CUNY, Flushing, New York 11367, United States
| | - Jean-Marc Noël
- Department of Chemistry and
Biochemistry, Queens College−CUNY, Flushing, New York 11367, United States
| | - Michael V. Mirkin
- Department of Chemistry and
Biochemistry, Queens College−CUNY, Flushing, New York 11367, United States
| | - Yang Gao
- Department of Electrical and Computer Engineering, ‡Department of Materials Science
and Engineering, and §A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut
Street, Philadelphia, Pennsylvania 19104, Unites States
| | - Olha Mashtalir
- Department of Electrical and Computer Engineering, ‡Department of Materials Science
and Engineering, and §A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut
Street, Philadelphia, Pennsylvania 19104, Unites States
| | - Gary Friedman
- Department of Electrical and Computer Engineering, ‡Department of Materials Science
and Engineering, and §A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut
Street, Philadelphia, Pennsylvania 19104, Unites States
| | - Yury Gogotsi
- Department of Electrical and Computer Engineering, ‡Department of Materials Science
and Engineering, and §A.J. Drexel Nanotechnology Institute, Drexel University, 3141 Chestnut
Street, Philadelphia, Pennsylvania 19104, Unites States
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28
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Kim J, Izadyar A, Shen M, Ishimatsu R, Amemiya S. Ion permeability of the nuclear pore complex and ion-induced macromolecular permeation as studied by scanning electrochemical and fluorescence microscopy. Anal Chem 2014; 86:2090-8. [PMID: 24460147 PMCID: PMC3955255 DOI: 10.1021/ac403607s] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 01/25/2014] [Indexed: 12/20/2022]
Abstract
Efficient delivery of therapeutic macromolecules and nanomaterials into the nucleus is imperative for gene therapy and nanomedicine. Nucleocytoplasmic molecular transport, however, is tightly regulated by the nuclear pore complex (NPC) with the hydrophobic transport barriers based on phenylalanine and glycine repeats. Herein, we apply scanning electrochemical microscopy (SECM) to quantitatively study the permeability of the NPCs to small probe ions with a wide range of hydrophobicity as a measure of their hydrophobic interactions with the transport barriers. Amperometric detection of the redox-inactive probe ions is enabled by using the ion-selective SECM tips based on the micropipet- or nanopipet-supported interfaces between two immiscible electrolyte solutions. The remarkably high ion permeability of the NPCs is successfully measured by SECM and theoretically analyzed. This analysis demonstrates that the ion permeability of the NPCs is determined by the dimensions and density of the nanopores without a significant effect of the transport barriers on the transported ions. Importantly, the weak ion-barrier interactions become significant at sufficiently high concentrations of extremely hydrophobic ions, i.e., tetraphenylarsonium and perfluorobutylsulfonate, to permeabilize the NPCs to naturally impermeable macromolecules. Dependence of ion-induced permeabilization of the NPC on the pathway and mode of macromolecular transport is studied by using fluorescence microscopy to obtain deeper insights into the gating mechanism of the NPC as the basis of a new transport model.
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Affiliation(s)
| | | | | | | | - Shigeru Amemiya
- Department of Chemistry, University
of Pittsburgh, 219 Parkman
Avenue, Pittsburgh, Pennsylvania 15260, United States
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