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Cai J, Vasudevan SV, Wang M, Mao H, Bu Q. Microwave-assisted synthesized renewable carbon nanofiber/nickel oxide for high-sensitivity detection of H2O2. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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2
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Bu Q, Cai J, Vasudevan SV, Ni J, Mao H. Microwave-assisted synthesis of bio-based Ni@NSiC nanocomposites for high efficient electrocatalysis of glucose. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Di Rocco G, Bighi B, Borsari M, Bortolotti CA, Ranieri A, Sola M, Battistuzzi G. Electron Transfer and Electrocatalytic Properties of the Immobilized Met80Ala Cytochrome
c
Variant in Dimethylsulfoxide. ChemElectroChem 2021. [DOI: 10.1002/celc.202100499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Giulia Di Rocco
- Department of Life Sciences University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
| | - Beatrice Bighi
- Department of Chemistry and Geology University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
| | - Marco Borsari
- Department of Chemistry and Geology University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
| | - Carlo Augusto Bortolotti
- Department of Life Sciences University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
| | - Antonio Ranieri
- Department of Life Sciences University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
| | - Marco Sola
- Department of Life Sciences University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
| | - Gianantonio Battistuzzi
- Department of Chemistry and Geology University of Modena and Reggio Emilia via Campi 103 41125 Modena Italy
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4
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Felisardo RJ, Luque AM, Silva QS, Soares CM, Fricks AT, Lima ÁS, Cavalcanti EB. Biosensor of horseradish peroxidase immobilized onto self-assembled monolayers: Optimization of the deposition enzyme concentration. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Theyagarajan K, Yadav S, Satija J, Thenmozhi K, Senthilkumar S. Gold Nanoparticle-Redox Ionic Liquid based Nanoconjugated Matrix as a Novel Multifunctional Biosensing Interface. ACS Biomater Sci Eng 2020; 6:6076-6085. [PMID: 33449637 DOI: 10.1021/acsbiomaterials.0c00807] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Creation of interfaces with a prudent design for the immobilization of biomolecules is substantial in the construction of biosensors for real-time monitoring. Herein, an adept biosensing interface was developed using a nanoconjugated matrix and has been employed toward the electrochemical determination of hydrogen peroxide (H2O2). The anionic gold nanoparticle (AuNP) was electrostatically tethered to cationic redox ionic liquid (IL), to which the horseradish peroxidase (HRP) enzyme was covalently immobilized to form a nanobioconjugate. The anthracene-substituted, aldehyde-functionalized redox IL (CHO-AIL) was judiciously designed with the (i) imidazolium cation for electrostatic interaction with AuNPs, (ii) anthracene moiety to mediate the electron transfer, and (iii) free aldehydic group for covalent bonding with a free amine group of the enzyme. Thus, the water-soluble HRP is effectively bonded to the CHO-AIL on a glassy carbon electrode (GCE) via imine bond formation, which resulted in the formation of the HRP-CHO-AIL/GCE. Electrochemical investigations on the HRP-CHO-AIL/GCE reveal highly stable and distinct redox peaks for the anthracene/anthracenium couple at a formal potential (E°') of -0.47 V. Electrostatic tethering of anionic AuNPs to the HRP-CHO-AIL promotes the electron transfer process in the HRP-CHO-AIL/AuNPs/GCE, as observed by the reduction in the formal potential to -0.42 V along with the enhancement in peak currents. The HRP-CHO-AIL/AuNPs/GCE has been explored toward the electrocatalytic detection of H2O2, and the modified electrode demonstrated a linear response toward H2O2 in the concentration range of 0.02-2.77 mM with a detection limit of 3.7 μM. The developed biosensor ascertained predominant selectivity and sensitivity in addition to remarkable stability and reproducibility, corroborating the suitableness of the platform for the effectual biosensing of H2O2. The eminent performance realized with our biosensor setup is ascribed to the multifunctional efficacy of this newly designed nanobioconjugate.
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Affiliation(s)
- Kandaswamy Theyagarajan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore 632014, India
| | - Sangeeta Yadav
- School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore 632014, India.,Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632014, India
| | - Jitendra Satija
- Centre for Nanobiotechnology, Vellore Institute of Technology (VIT), Vellore 632014, India
| | - Kathavarayan Thenmozhi
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore 632014, India
| | - Sellappan Senthilkumar
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore 632014, India
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6
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Ranieri A, Bortolotti CA, Di Rocco G, Battistuzzi G, Sola M, Borsari M. Electrocatalytic Properties of Immobilized Heme Proteins: Basic Principles and Applications. ChemElectroChem 2019. [DOI: 10.1002/celc.201901178] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Antonio Ranieri
- Department of Life SciencesUniversity of Modena and Reggio Emilia Via Campi 103 41125 Modena Italy
| | - Carlo Augusto Bortolotti
- Department of Life SciencesUniversity of Modena and Reggio Emilia Via Campi 103 41125 Modena Italy
| | - Giulia Di Rocco
- Department of Life SciencesUniversity of Modena and Reggio Emilia Via Campi 103 41125 Modena Italy
| | - Gianantonio Battistuzzi
- Department of Chemical and Geological SciencesUniversity of Modena and Reggio Emilia Via Campi 103 41125 Modena Italy
| | - Marco Sola
- Department of Life SciencesUniversity of Modena and Reggio Emilia Via Campi 103 41125 Modena Italy
| | - Marco Borsari
- Department of Chemical and Geological SciencesUniversity of Modena and Reggio Emilia Via Campi 103 41125 Modena Italy
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7
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Adaptable Xerogel-Layered Amperometric Biosensor Platforms on Wire Electrodes for Clinically Relevant Measurements. SENSORS 2019; 19:s19112584. [PMID: 31174353 PMCID: PMC6603663 DOI: 10.3390/s19112584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 01/11/2023]
Abstract
Biosensing strategies that employ readily adaptable materials for different analytes, can be miniaturized into needle electrode form, and function in bodily fluids represent a significant step toward the development of clinically relevant in vitro and in vivo sensors. In this work, a general scheme for 1st generation amperometric biosensors involving layer-by-layer electrode modification with enzyme-doped xerogels, electrochemically-deposited polymer, and polyurethane semi-permeable membranes is shown to achieve these goals. With minor modifications to these materials, sensors representing potential point-of-care medical tools are demonstrated to be sensitive and selective for a number of conditions. The potential for bedside measurements or continuous monitoring of analytes may offer faster and more accurate clinical diagnoses for diseases such as diabetes (glucose), preeclampsia (uric acid), galactosemia (galactose), xanthinuria (xanthine), and sepsis (lactate). For the specific diagnostic application, the sensing schemes have been miniaturized to wire electrodes and/or demonstrated as functional in synthetic urine or blood serum. Signal enhancement through the incorporation of platinum nanoparticle film in the scheme offers additional design control within the sensing scheme. The presented sensing strategy has the potential to be applied to any disease that has a related biomolecule and corresponding oxidase enzyme and represents rare, adaptable, sensing capabilities.
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8
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Antony N, Unnikrishnan L, Mohanty S, Nayak SK. The imperative role of polymers in enzymatic cholesterol biosensors- an overview. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2019.1576197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Neethu Antony
- Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering and Technology, Bhubaneswar, Odisha, India
| | - Lakshmi Unnikrishnan
- Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering and Technology, Bhubaneswar, Odisha, India
| | - Smita Mohanty
- Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering and Technology, Bhubaneswar, Odisha, India
| | - Sanjay K. Nayak
- Laboratory for Advanced Research in Polymeric Materials, Central Institute of Plastics Engineering and Technology, Bhubaneswar, Odisha, India
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9
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Lee SW, Kang TH, Lee SK, Lee KY, Yi H. Hydrodynamic Layer-by-Layer Assembly of Transferable Enzymatic Conductive Nanonetworks for Enzyme-Sticker-Based Contact Printing of Electrochemical Biosensors. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36267-36274. [PMID: 30259729 DOI: 10.1021/acsami.8b13070] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Realizing high-performance electrochemical biosensors in a simple contact-printing-based approach significantly increases the applicability of integrated flexible biosensors. Herein, an enzyme-sticker-based approach that enables flexible and multielectrochemical sensors via simple contact-transfer printing is reported. The enzyme sticker consists of an enzymatic conductive network film and a polymeric support. The enzyme-incorporated nanostructured conductive network showing an efficient electrical coupling was assembled via the hydrodynamic layer-by-layer assembly of redox enzymes, polyelectrolytes, single-walled carbon nanotubes, and a biological glue material, M13 phage. The enzymatic conductive network on a polymeric membrane support was facilely wet contact-transfer printed onto integrated electrode systems by exploiting varying degrees of hydrophilicity displayed by the enzymatic electronic film, polymeric support, and receiving electrodes of the sensor system. The glucose sensors fabricated using the enzyme sticker detected glucose at a concentration of as low as 35 μM and showed high selectivity and stability. Furthermore, a flexible dual-sensor array capable of detecting both glucose and lactate was demonstrated using the versatile enzyme sticker concept. This work presents a new route toward assembling and integrating hybrid nanomaterials with efficient electrochemical coupling for high-performance biosensors and health-monitoring devices as well as for emerging bioelectronics and electrochemical devices.
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Affiliation(s)
- Seung-Woo Lee
- Department of Fine Chemistry , Seoul National University of Science and Technology , Seoul 01811 , Republic of Korea
- Post-Silicon Semiconductor Institute , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Tae-Hyung Kang
- Post-Silicon Semiconductor Institute , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Sung Ku Lee
- Department of Fine Chemistry , Seoul National University of Science and Technology , Seoul 01811 , Republic of Korea
| | - Ki-Young Lee
- Post-Silicon Semiconductor Institute , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
| | - Hyunjung Yi
- Post-Silicon Semiconductor Institute , Korea Institute of Science and Technology , Seoul 02792 , Republic of Korea
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10
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Light-triggered theranostic liposomes for tumor diagnosis and combined photodynamic and hypoxia-activated prodrug therapy. Biomaterials 2018; 185:301-309. [PMID: 30265899 DOI: 10.1016/j.biomaterials.2018.09.033] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 09/18/2018] [Accepted: 09/18/2018] [Indexed: 12/26/2022]
Abstract
Hypoxia tumor microenvironment is a major challenge for photodynamical therapy (PDT), and hypoxia-activated chemotherapy combined PDT could be promising for enhanced anticancer therapy. In this study, we report an innovative 2-nitroimidazole derivative conjugated polyethylene glycol (PEG) amphoteric polymer theranostic liposome encapsulated a photosensitizer Chlorin e6 (Ce6), hypoxia-activated prodrug Tirapazamine (TPZ) and gene probe for synergistic photodynamic-chemotherapy. Ce6-mediated PDT upon irradiation with a laser induces hypoxia, which leads to the disassembly of the liposome and activates the antitumor activity of TPZ for improved cancer cell-killing. The released co-delivered gene probe could effectively detect the oncogenic intracellular biomarker for diagnosis. Both in vitro and in vivo studies demonstrated the greatly improved anti-cancer activity compared to conventional PDT. This work contributes to the design of hypoxia-responsive multifunctional liposome for tumor diagnosis and hypoxia-activated chemotherapy combined PDT for synergetic therapy, which holds great promise for future cancer therapy.
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11
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Reduced Graphene Oxide-Modified Screen-Printed Carbon (rGO-SPCE)-Based Disposable Electrochemical Sensor for Sensitive and Selective Determination of Ethyl Carbamate. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0886-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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12
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Furuyama A, Matsushima C, Yokoi T, Ueda M, Tamiya E. Synthesis of Recombinant Mouse Crystallin Proteins and in Vitro Measurement of Their Refractivity. ACS Biomater Sci Eng 2017; 3:502-508. [PMID: 33429617 DOI: 10.1021/acsbiomaterials.6b00605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The eye lens is an organ that focuses light onto the retina and is reported to have a high refractive index in vertebrates. An analysis of refractivity was conducted using recombinant mouse Crystallin proteins produced in Escherichia coli (E. coli) compared with bovine serum albumin (BSA) and other commercially available proteins. Not only did we measure the refractivity but for one of the crystallins, Cryba1, we also confirmed that it responds uniquely to its environmental conditions. The crystallin showed high refractivity, as expected, and we confirmed that the electrical charge of the Cryba1 molecule influences its refractivity.
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Affiliation(s)
- Akiho Furuyama
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Chiyuki Matsushima
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takahiro Yokoi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Mitsuyoshi Ueda
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Eiichi Tamiya
- Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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14
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Zuo J, Zhao X, Ju X, Qiu S, Hu W, Fan T, Zhang J. A New Molecularly Imprinted Polymer (MIP)-based Electrochemical Sensor for Monitoring Cardiac Troponin I (cTnI) in the Serum. ELECTROANAL 2016. [DOI: 10.1002/elan.201600059] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Juanjuan Zuo
- Tianjin Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
| | - Xiaoyu Zhao
- College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
| | - Xiaocui Ju
- Tianjin Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
| | - Shue Qiu
- Tianjin Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
| | - Wenshuai Hu
- Tianjin Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
| | - Ting Fan
- Tianjin Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
| | - Juankun Zhang
- Tianjin Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th avenue, TEDA Tianjin P. R. China
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15
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Lee SW, Lee KY, Song YW, Choi WK, Chang J, Yi H. Direct Electron Transfer of Enzymes in a Biologically Assembled Conductive Nanomesh Enzyme Platform. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:1577-84. [PMID: 26662628 DOI: 10.1002/adma.201503930] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 10/14/2015] [Indexed: 05/20/2023]
Abstract
Nondestructive assembly of a nanostructured enzyme platform is developed in combination of the specific biomolecular attraction and electrostatic coupling for highly efficient direct electron transfer (DET) of enzymes with unprecedented applicability and versatility. The biologically assembled conductive nanomesh enzyme platform enables DET-based flexible integrated biosensors and DET of eight different enzyme with various catalytic activities.
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Affiliation(s)
- Seung-Woo Lee
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea
| | - Ki-Young Lee
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea
| | - Yong-Won Song
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea
| | - Won Kook Choi
- Materials and Life Science Research Division, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea
| | - Joonyeon Chang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea
| | - Hyunjung Yi
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea
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16
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Lin D, Li Y, Zhang P, Zhang W, Ding J, Li J, Wei G, Su Z. Fast preparation of MoS2 nanoflowers decorated with platinum nanoparticles for electrochemical detection of hydrogen peroxide. RSC Adv 2016. [DOI: 10.1039/c6ra07591f] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
MoS2 nanoflowers decorated with Pt nanoparticles show enhanced performances for electrochemical H2O2 sensing.
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Affiliation(s)
- Dongmei Lin
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Yang Li
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Panpan Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Wensi Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Junwei Ding
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
| | - Jingfeng Li
- Hybrid Materials Interface Group
- Faculty of Production Engineering
- University of Bremen
- D-28359 Bremen
- Germany
| | - Gang Wei
- Hybrid Materials Interface Group
- Faculty of Production Engineering
- University of Bremen
- D-28359 Bremen
- Germany
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- 100029 Beijing
- China
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17
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Luo X, Zhang Z, Wan Q, Wu K, Yang N. Lithium-doped NiO nanofibers for non-enzymatic glucose sensing. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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18
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Gong W, Zou J, Zhang S, Zhou X, Jiang J. Nickel Oxide and Nickel Co-doped Graphitic Carbon Nitride Nanocomposites and its Octylphenol Sensing Application. ELECTROANAL 2015. [DOI: 10.1002/elan.201500491] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Poulos NG, Hall JR, Leopold MC. Functional layer-by-layer design of xerogel-based first-generation amperometric glucose biosensors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:1547-1555. [PMID: 25562760 DOI: 10.1021/la504358t] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Xerogel-based first-generation amperometric glucose biosensors, constructed through specific layer-by-layer assembly of films featuring glucose oxidase doped xerogel, a diffusion-limiting xerogel layer, and capped with both electropolymerized polyphenol and blended polyurethane semipermeable membranes, are presented. The specific combination of xerogels formed from specific silane precursors, including propyl-trimethoxysilane, isobutyl-trimethoxysilane, octyl-trimethoxysilane, and hydroxymethyl-triethoxysilane, exhibit impressive dynamic and linear ranges of detection (e.g., ≥24-28 mM glucose) and low response times, as well as significant discrimination against common interferent species such as acetaminophen, ascorbic acid, sodium nitrite, oxalic acid, and uric acid as determined by selectivity coefficients. Additionally, systematic electrochemical and contact angle studies of different xerogel silane precursors, varying in structure, chain length, and/or functional group, reveal that sensor performance is more dependent on the tunable porosity/permeability of the layered interfaces rather than the hydrophobic character or functional groups within the films. While the sensing performance largely exceeds that of existing electrochemical glucose sensing schemes in the literature, the presented layered approach establishes the specific functionality of each layer working in concert with each other and suggests that the strategy may be readily adaptable to other clinically relevant targets and is amenable to miniaturization for eventual in situ or in vivo sensing.
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Affiliation(s)
- Nicholas G Poulos
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond , Richmond, Virginia 23173, United States
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Jing P, Yi H, Xue S, Yuan R, Xu W. A ‘signal on-off’ electrochemical peptide biosensor for matrix metalloproteinase 2 based on target induced cleavage of a peptide. RSC Adv 2015. [DOI: 10.1039/c5ra10662a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sensitive ‘signal on–off’ electrochemical peptide biosensor for MMP-2 assay was fabricated based on target induced cleavage of a specific peptide.
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Affiliation(s)
- Pei Jing
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Huayu Yi
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Shuyan Xue
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Ruo Yuan
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
| | - Wenju Xu
- Key Laboratory on Luminescence and Real-Time Analytical Chemistry (Southwest University)
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- People's Republic of China
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