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Hu Z, Xu R, Yu S, Li J, Yang Z. Facile synthesis of a nanorod-like MoS 2 nanostructure for sensitive electrochemical biosensing application. Analyst 2021; 145:7864-7869. [PMID: 33025956 DOI: 10.1039/d0an01553a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel nanorod-like MoS2 semiconductor nanostructure was synthesized through a simple two-step method. The nanorod-like MoS2 nanostructure was exploited as an electrode material to immobilize enzymes and for electrochemical sensing application. Characterization of the nanorod-like MoS2 nanostructure and the resultant biosensor was performed by scanning electron microscopy, Fourier transform infrared spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. Enzyme molecules loaded at the MoS2 nanostructure retained their native structure and bioactivity. The direct electron transfer of glucose oxidase at the MoS2 nanostructure coated glassy carbon electrode was enhanced greatly. At an optimal potential of -0.45 V, the electrochemical glucose sensor had wide linear ranges of 1.5 × 10-5-3.25 × 10-4 M and 3.25 × 10-4-1.43 × 10-3 M, and a low detection limit of 0.005 mM (S/N = 3) with a high sensitivity of 25.06 ± 0.5 mA M-1 cm-2. At the same time, the present biosensor showed excellent selectivity, reproducibility and stability for glucose. What's more, the biosensor was successfully applied to the determination of practical samples.
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Affiliation(s)
- Zhongfang Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China.
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2
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Bheemanapally K, Ibrahim MMH, Briski KP. Combinatory high-resolution microdissection/ultra performance liquid chromatographic-mass spectrometry approach for small tissue volume analysis of rat brain glycogen. J Pharm Biomed Anal 2020; 178:112884. [PMID: 31606560 PMCID: PMC6936218 DOI: 10.1016/j.jpba.2019.112884] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/14/2019] [Accepted: 09/16/2019] [Indexed: 01/31/2023]
Abstract
Cyto-architectural diversity of brain structures emphasizes need for analytical tools for discriminative investigation of distinctive neural structures. Glycogen is the major energy reserve in the brain. There is speculation that brain utilization of this fuel source may affect detection of hypoglycemia. To evaluate sex-specific regulation of glycogen mass and mobilization in the glucose-sensory ventromedial hypothalamic nucleus (VMN), current research coupled UHPLC-electrospray ionization mass spectrometric (LC-ESI-MS) analysis capabilities with novel derivatization protocols for high-sensitivity measurement of glucose and glycogen in small-volume neural tissue samples. This work also sought to demonstrate utility of pairing this approach with optimized Western blot methods for measurement of glycogen metabolic enzyme protein expression. Here, high-resolution micropunch dissection tools for discriminative isolation of VMN tissue were used in conjunction with newly developed glycogen analytical methods and an experimental treatment paradigm for intra-cranial hindbrain-targeted administration of estrogen receptor-alpha (ERα) or -beta (ERβ) receptor antagonists to address the hypothesis that estradiol activates one or both hindbrain ER populations to exert sex-specific regulatory effects on VMN glycogen mass and hypoglycemia-associated mobilization. Outcomes validate a novel multi-analytical platform for investigation of in vivo sex-dimorphic regulation of glycogen metabolism in precisely-defined brain elements under conditions of energy balance versus imbalance. This combinatory approach will facilitate ongoing efforts to elucidate effects of acute versus chronic hypoglycemia on glycogen metabolism in characterized brain glucose-sensory loci and determine effects local glycogen mass and/or mobilization adaptions on sensory monitoring and signaling of recurring hypoglycemia in each sex.
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Affiliation(s)
- Khaggeswar Bheemanapally
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, United States
| | - Mostafa M H Ibrahim
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, United States
| | - Karen P Briski
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, United States.
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3
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Rodionov AN, Snegur LV, Dobryakova YV, Ilyin MM, Markevich VA, Simenel AA. Administration of ferrocene‐modified amino acids induces changes in synaptic transmission in the CA1 area of the hippocampus. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alexey N. Rodionov
- A.N. Nesmeyanov Institute of OrganoElement CompoundsRussian Academy of Sciences 28 Vavilov St. 119991 Moscow Russian Federation
| | - Lubov V. Snegur
- A.N. Nesmeyanov Institute of OrganoElement CompoundsRussian Academy of Sciences 28 Vavilov St. 119991 Moscow Russian Federation
| | - Yulia V. Dobryakova
- Institute for Higher Nervous Activity and NeurophysiologyRussian Academy of Sciences Russian Federation
| | - Mikhail M. Ilyin
- A.N. Nesmeyanov Institute of OrganoElement CompoundsRussian Academy of Sciences 28 Vavilov St. 119991 Moscow Russian Federation
| | - Vladimir A. Markevich
- Institute for Higher Nervous Activity and NeurophysiologyRussian Academy of Sciences Russian Federation
| | - Alexander A. Simenel
- A.N. Nesmeyanov Institute of OrganoElement CompoundsRussian Academy of Sciences 28 Vavilov St. 119991 Moscow Russian Federation
- Moscow State Mining University 6 Leninsky Av 119991 Moscow Russian Federation
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Lv M, Yu S, Liu S, Li L, Yu H, Wu Q, Pang J, Liu Y, Xie C, Liu Y. One-pot synthesis of stable Pd@mSiO2 core–shell nanospheres with controlled pore structure and their application to the hydrogenation reaction. Dalton Trans 2019; 48:7015-7024. [DOI: 10.1039/c9dt01269a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A new type of Pd@mSiO2 composite nanospheres with controlled pore structure, consisting of internal Pd cores and controlled mesoporous silica shells, has been prepared by a facile one-pot method.
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5
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Redox-stimuli-responsive drug delivery systems with supramolecular ferrocenyl-containing polymers for controlled release. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.03.013] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Potentiometric sensors arrays based on perfluorinated membranes and silica nanoparticles with surface modified by proton-acceptor groups, for the determination of aspartic and glutamic amino acids anions and potassium cations. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.03.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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7
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Zhang W, Xiong H, Chen M, Zhang X, Wang S. Surface-enhanced molecularly imprinted electrochemiluminescence sensor based on Ru@SiO 2 for ultrasensitive detection of fumonisin B 1. Biosens Bioelectron 2017; 96:55-61. [DOI: 10.1016/j.bios.2017.04.035] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 04/20/2017] [Accepted: 04/25/2017] [Indexed: 01/10/2023]
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8
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Rodionov АN, Snegur LV, Simenel АА, Dobryakova YV, Markevich VА. Ferrocene-modified amino acids: synthesis and in vivo bioeffects on hippocampus. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1711-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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The application of graphene for in vitro and in vivo electrochemical biosensing. Biosens Bioelectron 2017; 89:224-233. [DOI: 10.1016/j.bios.2016.03.026] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/22/2016] [Accepted: 03/13/2016] [Indexed: 01/22/2023]
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Zhang S, Song Y, Jia J, Xiao G, Yang L, Sun M, Wang M, Cai X. An implantable microelectrode array for dopamine and electrophysiological recordings in response to L-dopa therapy for Parkinson's disease. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2016; 2016:1922-1925. [PMID: 28268703 DOI: 10.1109/embc.2016.7591098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Dual-mode multielectrode recordings have become routine in rodent neuroscience research. However, robust and reliable application of acute, multielectrode recording methods in brain especially for in vivo research remains a challenge. In patients with Parkinson's disease (PD), the efficacy of L-dopa therapy depends on its ability to restore Dopamine (DA) neurotransmission in the striatum. In this paper, We describe a low cost thin film 16 sites implantable microelectrode array (MEA) chip fabricated by standard lithography technology for in vivo test. In urethane anesthetized rats, the MEA probes were implanted acutely for simultaneous recording of local field potentials, spikes, and L-dopa therapy evoked dopamine overflow on the same spatiotemporal scale. We present a detailed protocol for array fabrication, then show that the device can record Spikes, LFPs and dopamine variation in real time. Across any given microelectrode, spike amplitudes ranged from 80 to 300 μν peak to peak, with a mean signal-tonoise ratio of better than 5:1. Calibration results showed the MEA probe had high sensitivity and good selectivity for DA. Comparison with existing methods allow single mode recording, our neural probes would be useful for examining specific spatiotemporal relationships between electrical and chemical signaling in the brain.
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Wang D, Wu Y, Xia J. Review on photoacoustic imaging of the brain using nanoprobes. NEUROPHOTONICS 2016; 3:010901. [PMID: 26740961 PMCID: PMC4699324 DOI: 10.1117/1.nph.3.1.010901] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/24/2015] [Indexed: 05/18/2023]
Abstract
Photoacoustic (PA) tomography (PAT) is a hybrid imaging modality that integrates rich optical contrasts with a high-ultrasonic spatial resolution in deep tissue. Among various imaging applications, PA neuroimaging is becoming increasingly important as it nicely complements the limitations of conventional neuroimaging modalities, such as the low-temporal resolution in magnetic resonance imaging and the low depth-to-resolution ratio in optical microscopy/tomography. In addition, the intrinsic hemoglobin contrast PA neuroimaging has also been greatly improved by recent developments in nanoparticles (NPs). For instance, near-infrared absorbing NPs greatly enhanced the vascular contrast in deep-brain PAT; tumor-targeting NPs allowed highly sensitive and highly specific delineation of brain tumors; and multifunctional NPs enabled comprehensive examination of the brain through multimodal imaging. We aim to give an overview of NPs used in PA neuroimaging. Classifications of various NPs used in PAT will be introduced at the beginning, followed by an overview of PA neuroimaging systems, and finally we will discuss major applications of NPs in PA neuroimaging and highlight representative studies.
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Affiliation(s)
- Depeng Wang
- State University of New York, University at Buffalo, Department of Biomedical Engineering, 208 Bonner Hall, Buffalo, New York 14260, United States
| | - Yun Wu
- State University of New York, University at Buffalo, Department of Biomedical Engineering, 208 Bonner Hall, Buffalo, New York 14260, United States
| | - Jun Xia
- State University of New York, University at Buffalo, Department of Biomedical Engineering, 208 Bonner Hall, Buffalo, New York 14260, United States
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12
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Sardesai NP, Karimi A, Andreescu S. Engineered Pt-Doped Nanoceria for Oxidase-Based Bioelectrodes Operating in Oxygen-Deficient Environments. ChemElectroChem 2014. [DOI: 10.1002/celc.201402250] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Wang J, Shah ZH, Zhang S, Lu R. Silica-based nanocomposites via reverse microemulsions: classifications, preparations, and applications. NANOSCALE 2014; 6:4418-37. [PMID: 24562100 DOI: 10.1039/c3nr06025j] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Silica-based nanocomposites with amorphous silica as the matrix or carrier along with a functional component have been extensively investigated. These nanocomposites combine the advantages of both silica and the functional components, demonstrating great potential for various applications. To synthesize such composites, one of the most frequently used methods is reverse microemulsion due to its convenient control over the size, shape, and structures. The structures of the composites have a decisive significance for their properties and applications. In this review, we tried to categorize the silica-based nanocomposites via reverse microemulsions based on their structures, discussed the syntheses individually for each structure, summarized their applications, and made some perspectives based on the current progress of this field.
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Affiliation(s)
- Jiasheng Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China.
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14
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Passon M, Ruff A, Schuler P, Speiser B, Dreiling I. Stepwise Solid-Phase Synthesis and Solid-State Electrochemistry of Redox-Active Viologen Core/Shell-Structured Modified Silica Materials. ChemElectroChem 2013. [DOI: 10.1002/celc.201300123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Takahashi S, Anzai JI. Recent Progress in Ferrocene-Modified Thin Films and Nanoparticles for Biosensors. MATERIALS (BASEL, SWITZERLAND) 2013; 6:5742-5762. [PMID: 28788421 PMCID: PMC5452732 DOI: 10.3390/ma6125742] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/02/2013] [Accepted: 12/02/2013] [Indexed: 02/06/2023]
Abstract
This article reviews recent progress in the development of ferrocene (Fc)-modified thin films and nanoparticles in relation to their biosensor applications. Redox-active materials in enzyme biosensors commonly use Fc derivatives, which mediate electron transfer between the electrode and enzyme active site. Either voltammetric or amperometric signals originating from redox reactions of Fc are detected or modulated by the binding of analytes on the electrode. Fc-modified thin films have been prepared by a variety of protocols, including insitu polymerization, layer-by-layer (LbL) deposition, host-guest complexation and molecular recognitions. Insitu polymerization provides a facile way to form Fc thin films, because the Fc polymers are directly deposited onto the electrode surface. LbL deposition, which can modulate the film thickness and Fc content, is suitable for preparing well-organized thin films. Other techniques, such as host-guest complexation and protein-based molecular recognition, are useful for preparing Fc thin films. Fc-modified Au nanoparticles have been widely used as redox-active materials to fabricate electrochemical biosensors. Fc derivatives are often attached to Au nanoparticles through a thiol-Au linkage. Nanoparticles consisting of inorganic porous materials, such as zeolites and iron oxide, and nanoparticle-based composite materials have also been used to prepare Fc-modified nanoparticles. To construct biosensors, Fc-modified nanoparticles are immobilized on the electrode surface together with enzymes.
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Affiliation(s)
- Shigehiro Takahashi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Jun-Ichi Anzai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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16
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Wei W, Song Y, Shi W, Lin N, Jiang T, Cai X. A high sensitivity MEA probe for measuring real time rat brain glucose flux. Biosens Bioelectron 2013; 55:66-71. [PMID: 24362080 DOI: 10.1016/j.bios.2013.11.048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 11/13/2013] [Accepted: 11/14/2013] [Indexed: 11/26/2022]
Abstract
The mammalian central nervous system (CNS) relies on a constant supply of external glucose for its undisturbed operation. This article presents an implantable Multi-Electrode Array (MEA) probe for brain glucose measurement. The MEA was implemented on Silicon-On-Insulator (SOI) wafer using Micro-Electro-Mechanical-Systems (MEMS) methods. There were 16 platinum recording sites on the probe and enzyme glucose oxidase (GOx) was immobilized on them. The glucose sensitivity of the MEA probe was as high as 489 µA mM(-1) cm(-2). 1,3-Phenylenediamine (mPD) was electropolymerized onto the Pt recording surfaces to prevent larger molecules such as ascorbic acid (AA), 3,4-dihydroxyphenylacetic acid (DOPAC), serotonin (5-HT), and dopamine (DA) from reaching the recording sites surface. The MEA probe was implanted in the anesthetized rat striatum and responded to glucose levels which were altered by intraperitoneal injection of glucose and insulin. After the in vivo experiment, the MEA probe still kept sensitivity to glucose, these suggested that the MEA probe was reliable for glucose monitoring in brain extracellular fluid (ECF).
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Affiliation(s)
- Wenjing Wei
- State Key Laboratory of Transducer Technology, Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, China
| | - Yilin Song
- State Key Laboratory of Transducer Technology, Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China
| | - Wentao Shi
- State Key Laboratory of Transducer Technology, Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China
| | - Nansen Lin
- State Key Laboratory of Transducer Technology, Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China
| | - Tingjun Jiang
- State Key Laboratory of Transducer Technology, Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, China
| | - Xinxia Cai
- State Key Laboratory of Transducer Technology, Institute of Electronics Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, China.
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Rampazzo E, Bonacchi S, Genovese D, Juris R, Marcaccio M, Montalti M, Paolucci F, Sgarzi M, Valenti G, Zaccheroni N, Prodi L. Nanoparticles in metal complexes-based electrogenerated chemiluminescence for highly sensitive applications. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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18
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Modulating electron transfer properties of gold nanoparticles for efficient biosensing. Biosens Bioelectron 2012; 37:30-7. [DOI: 10.1016/j.bios.2012.04.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 03/28/2012] [Accepted: 04/16/2012] [Indexed: 12/25/2022]
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19
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Novel impedimetric immunosensor for the detection and quantitation of Adenovirus using reduced antibody fragments immobilized onto a conducting copolymer surface. Biosens Bioelectron 2012; 32:104-10. [DOI: 10.1016/j.bios.2011.11.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/18/2011] [Accepted: 11/24/2011] [Indexed: 10/14/2022]
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20
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Wang J, Diao P, Zhang Q. Dual detection strategy for electrochemical analysis of glucose and nitrite using a partitionally modified electrode. Analyst 2011; 137:145-52. [PMID: 22064849 DOI: 10.1039/c1an15758b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual-region modified electrode was designed and fabricated by means of partitioned electrodeposition of gold and platinum nanoparticles on an indium tin oxide (ITO) conductive glass for dual-component electrochemical detection. The two differently modified regions were assigned to detect two analytes, separately and simultaneously. The gold nanoparticle modified ITO region (AuNPs/ITO) was used for glucose detection while the platinum nanoparticle modified ITO region (PtNPs/ITO) for nitrite detection. The glucose oxidation peak current at 0.10 V on AuNPs/ITO exhibited a linear dependence on the concentration of glucose and was used to determine the concentration of glucose in dual-detection. The nitrite reduction peak current at PtNPs/ITO showed a nonlinear dependence on the concentration of nitrite. A theoretical model combining the adsorption-controlled and the mass-transfer-controlled kinetics was proposed to quantitatively describe the nonlinear behavior. Though the presence of glucose interfered with the electrochemical detection of nitrite, it was demonstrated that the influence of glucose on nitrite detection can be corrected. On the basis of the proposed theoretical model, the simultaneous dual-detection of glucose and nitrite was accomplished at ITO electrodes partitionally modified with AuNPs and PtNPs.
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Affiliation(s)
- Jingyi Wang
- Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
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21
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Zhiguo G, Shuping Y, Zaijun L, Xiulan S, Guangli W, Yinjun F, Junkang L. An ultrasensitive electrochemical biosensor for glucose using CdTe-CdS core–shell quantum dot as ultrafast electron transfer relay between graphene-gold nanocomposite and gold nanoparticle. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.07.117] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Pham XH, Ngoc Bui MP, Li CA, Han KN, Seong GH. Electrochemical Patterning of Palladium Nanoparticles on a Single-Walled Carbon Nanotube Platform and Its Application to Glucose Detection. ELECTROANAL 2011. [DOI: 10.1002/elan.201100046] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Zhou G, Fung KK, Wong LW, Chen Y, Renneberg R, Yang S. Immobilization of glucose oxidase on rod-like and vesicle-like mesoporous silica for enhancing current responses of glucose biosensors. Talanta 2011; 84:659-65. [DOI: 10.1016/j.talanta.2011.01.058] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 01/13/2011] [Accepted: 01/21/2011] [Indexed: 11/26/2022]
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25
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Pham XH, Bui MPN, Li CA, Han KN, Kim JH, Won H, Seong GH. Electrochemical characterization of a single-walled carbon nanotube electrode for detection of glucose. Anal Chim Acta 2010; 671:36-40. [DOI: 10.1016/j.aca.2010.05.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 05/02/2010] [Accepted: 05/05/2010] [Indexed: 11/24/2022]
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26
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Safavi A, Moradlou O, Saadatifar M. Methylated Azopyridine as a New Electron Transfer Mediator for the Electrocatalytic Oxidation of NADH. ELECTROANAL 2010. [DOI: 10.1002/elan.200900487] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Zhilei W, Zaijun L, Xiulan S, Yinjun F, Junkang L. Synergistic contributions of fullerene, ferrocene, chitosan and ionic liquid towards improved performance for a glucose sensor. Biosens Bioelectron 2010; 25:1434-8. [DOI: 10.1016/j.bios.2009.10.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2009] [Revised: 10/24/2009] [Accepted: 10/28/2009] [Indexed: 10/20/2022]
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28
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Beasley CA, Murray RW. Voltammetry and redox charge storage capacity of ferrocene-functionalized silica nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10370-10375. [PMID: 19505118 DOI: 10.1021/la901050t] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We describe the electrochemistry of 15 nm diameter silica nanoparticles densely functionalized with ferrocene (FcSiO(2)) through siloxane couplings. Each nanoparticle bears approximately 600 Fc sites, as measured by potentiometric titration (590 Fc) and diffusion-controlled voltammetry (585 Fc) and estimated by XPS (630 Fc). The nanoparticle ferrocene coverage amounts to ca. a complete monolayer of ferrocene sites, which react electrochemically without mutual interactions and which are apparently fully accessible for diffusion-controlled electrode reactions. Diffusion-controlled voltammetry of the FcSiO(2) nanoparticles was observed in dilute methanol dispersions and in more concentrated slurry phases formed in methanol/acetonitrile mixtures. Electrochemical studies reveal interesting behavior in the dilute and more concentrated solutions. Because of the large nanoparticle surface area/volume ratio, the ferrocene-coated silica nanoparticles are capable of storing up to 5 x 10(7) C/m(3) of redox charge as dry phases and 6 x 10(5) C/m(3) in the concentrated slurries.
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Affiliation(s)
- Christopher A Beasley
- Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, USA
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Towards an implantable biochip for glucose and lactate monitoring using microdisc electrode arrays (MDEAs). Biomed Microdevices 2009; 11:75-85. [PMID: 18677565 DOI: 10.1007/s10544-008-9211-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A complete electrochemical cell-on-a-chip that uses the MicroDisc Electrode Array (MDEA) working electrode (WE) design was evaluated for eventual intramuscular implantation for the continuous amperometric monitoring of glucose and lactate in an animal trauma model. The microfabricated ECC MDEA5037 comprises two discrete electrochemical cells-on-a-chip (ECCs), each with a reference, counter, and MDEA working electrode. Each MDEA comprises 37 microdiscs (diameter = 50 microm) arranged in a Hexagonal Closed Packed (HCP) arrangement with a center to center distance (d) of 100 microm. Cyclic Voltammetry (CV) and Electrical Impendence Spectroscopy (EIS) reveals that this device scales in its interfacial properties with a corresponding MDEA 050 device that comprises 5,184 microdiscs. Parallel development of miniaturized mixed-signal integrated electronics for wireless reprogramming, data acquisition and communication addresses the key issues involved in developing measurement electronics, AD/DA processing, power management and telemetry for implantable amperometric biosensors. A generalized electronics platform based on the Texas Instruments TI NC01101 chip has been developed that may be readily applied to many types of biotransducers with minor modifications.
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Recent advances in material science for developing enzyme electrodes. Biosens Bioelectron 2009; 24:2313-22. [DOI: 10.1016/j.bios.2008.09.026] [Citation(s) in RCA: 214] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 08/27/2008] [Accepted: 09/25/2008] [Indexed: 12/27/2022]
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Li F, Wang Z, Chen W, Zhang S. A simple strategy for one-step construction of bienzyme biosensor by in-situ formation of biocomposite film through electrodeposition. Biosens Bioelectron 2009; 24:3030-5. [PMID: 19395252 DOI: 10.1016/j.bios.2009.03.017] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 03/09/2009] [Accepted: 03/11/2009] [Indexed: 02/07/2023]
Abstract
One-step construction of horseradish peroxidase (HRP) and glucose oxidase (GOD) bienzyme biosensor was established based on a simple and controllable electrodeposition approach by in-situ formation of biocomposite film on electrode. With hydrogen peroxide (H(2)O(2)) instantly generated by GOD-catalyzed oxidation of glucose, quantitative measurement of glucose could be achieved. In the proposed electrodeposition strategy, Concanavalin A (Con A) was applied as bifunctional cross-linker for in-situ incorporating of HRP-GOD in biocompatible chitosan (CS) matrix due to its biospecific affinity interaction with CS and glycoproteins. Scanning electron microscopy showed that the HRP-GOD/Con A/CS biocomposite film possessed highly porous surface. The developed bienzyme biosensor exhibited a fast amperometric response for the determination of glucose. The linear response of the developed biosensor for the determination of glucose ranged from 1.0x10(-6) to 2.2x10(-4) M with a detection limit of 6.7x10(-7) M. The biosensor can be used to determine glucose in serum directly. The biosensor presented high stability owing to the design of the introduction of Con A and instant generation of H(2)O(2) with bienzyme system. The one-step construction of biosensor based on non-manual technique in biocompatible environment was direct and facile.
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Affiliation(s)
- Feng Li
- Key Laboratory of Eco-Chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
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Qiu JD, Zhou WM, Guo J, Wang R, Liang RP. Amperometric sensor based on ferrocene-modified multiwalled carbon nanotube nanocomposites as electron mediator for the determination of glucose. Anal Biochem 2009; 385:264-9. [DOI: 10.1016/j.ab.2008.12.002] [Citation(s) in RCA: 157] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2008] [Revised: 11/27/2008] [Accepted: 12/01/2008] [Indexed: 02/06/2023]
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Kusamoto T, Ruiz J, Astruc D. Towards molecular batteries: coverage of small aminosilica nanoparticles with ferrocenyl and pentamethylferrocenyl groups and their redox properties. NEW J CHEM 2009. [DOI: 10.1039/b9nj00481e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tallury P, Payton K, Santra S. Silica-based multimodal/multifunctional nanoparticles for bioimaging and biosensing applications. Nanomedicine (Lond) 2008; 3:579-92. [DOI: 10.2217/17435889.3.4.579] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the last decade, the field of nanoparticle (NP) technology has attracted immense interest in bioimaging and biosensing research. This technology has demonstrated its capability in obtaining sensitive data in a noninvasive manner, promising a breakthrough in early-stage cancer diagnosis, stem cell tracking, drug delivery, pathogen detection and gene delivery in the near future. However, successful and wide application of this technology relies greatly on robust NP engineering and synthesis methodologies. The NP development steps involve design, synthesis, surface modification and bioconjugation. Each of these steps is critical in determining the overall performance of NPs. It is desirable to obtain NPs that are highly sensitive, stable, imageable, biocompatible and targetable. It is also desirable to obtain multimodal/multifunctional NPs that will enable imaging/sensing of the target using multiple imaging/sensing modalities. In this review, we focus on silica NPs that have been developed for biosensing applications and silica-based multimodal/multifunctional NPs for bioimaging applications.
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Affiliation(s)
- Padmavathy Tallury
- University of Central Florida, Nanoscience Technology Center, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
| | - Keith Payton
- University of Central Florida, Nanoscience Technology Center, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
| | - Swadeshmukul Santra
- University of Central Florida, Nanoscience Technology Center, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
- University of Central Florida, Department of Chemistry, Orlando, FL 32826, USA
- University of Central Florida, Biomolecular Science Center, Orlando, FL 32826, USA
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Ahmad F, Yusof APM, Bainbridge M, Ab Ghani S. The application of glucose biosensor in studying the effects of insulin and anti-hypertensive drugs towards glucose level in brain striatum. Biosens Bioelectron 2008; 23:1862-8. [PMID: 18440218 DOI: 10.1016/j.bios.2008.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Revised: 03/03/2008] [Accepted: 03/04/2008] [Indexed: 12/20/2022]
Abstract
The mechanisms involving insulin and anti-hypertensive drugs regulation for in vivo cerebral glucose metabolism are not well-understood. This might be due to lack of direct means of measuring cerebral glucose. It is known that the continuous delivery of glucose to the brain is critical for its normal metabolic function. In this study, we report the effect of insulin and anti-hypertensive drugs on glucose level in the striatum of rats. The rats were divided into two groups, i.e. hyperglycemia (14.8+/-0.3mM plasma glucose) and diabetic (10.8+/-0.2mM plasma glucose). A custom-built glucose microsensor was implanted at coordinates A/P 1.0 from bregma, M/L +2.5 and D/V -5.0 (from dura) in the striatum. The amperometric response obtained at +0.23 V vs. Ag|AgCl corresponded to the glucose level in striatum. By varying the concentrations of protaminc zinc insulin infused into the rats, striatum glucose level was found to remain constant throughout, i.e. 9.8+/-0.1 and 4.7+/-0.1mM for hyperglycemic rats and for diabetic rats, respectively. However, infusion of valsartan and felodipine has lowered the striatum glucose level significantly. These findings agreed with the hypothesis that suggested striatum glucose uptake do not depend on insulin but is clearly dependant on anti-hypertensive drugs administration.
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Affiliation(s)
- Farook Ahmad
- Pusat Pengajian Sains Kimia, Universiti Sains Malaysia, 11800 USM, Pulau Pinang, Malaysia
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Ferrocene-modified Fe3O4@SiO2 magnetic nanoparticles as building blocks for construction of reagentless enzyme-based biosensors. Electrochem commun 2007. [DOI: 10.1016/j.elecom.2007.09.009] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Abstract
Oxidoreductase enzymes catalyze single- or multi-electron reduction/oxidation reactions of small molecule inorganic or organic substrates, and they are integral to a wide variety of biological processes including respiration, energy production, biosynthesis, metabolism, and detoxification. All redox enzymes require a natural redox partner such as an electron-transfer protein (e.g. cytochrome, ferredoxin, flavoprotein) or a small molecule cosubstrate (e.g. NAD(P)H, dioxygen) to sustain catalysis, in effect to balance the substrate/product redox half-reaction. In principle, the natural electron-transfer partner may be replaced by an electrochemical working electrode. One of the great strengths of this approach is that the rate of catalysis (equivalent to the observed electrochemical current) may be probed as a function of applied potential through linear sweep and cyclic voltammetry, and insight to the overall catalytic mechanism may be gained by a systematic electrochemical study coupled with theoretical analysis. In this review, the various approaches to enzyme electrochemistry will be discussed, including direct and indirect (mediated) experiments, and a brief coverage of the theory relevant to these techniques will be presented. The importance of immobilizing enzymes on the electrode surface will be presented and the variety of ways that this may be done will be reviewed. The importance of chemical modification of the electrode surface in ensuring an environment conducive to a stable and active enzyme capable of functioning natively will be illustrated. Fundamental research into electrochemically driven enzyme catalysis has led to some remarkable practical applications. The glucose oxidase enzyme electrode is a spectacularly successful application of enzyme electrochemistry. Biosensors based on this technology are used worldwide by sufferers of diabetes to provide rapid and accurate analysis of blood glucose concentrations. Other applications of enzyme electrochemistry are in the sensing of macromolecular complexation events such as antigen–antibody binding and DNA hybridization. The review will include a selection of enzymes that have been successfully investigated by electrochemistry and, where appropriate, discuss their development towards practical biotechnological applications.
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Zhang M, Mullens C, Gorski W. Chitosan-Glutamate Oxidase Gels: Synthesis, Characterization, and Glutamate Determination. ELECTROANAL 2005. [DOI: 10.1002/elan.200503348] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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He L, Toh CS. Recent advances in analytical chemistry--a material approach. Anal Chim Acta 2005; 556:1-15. [PMID: 17723326 DOI: 10.1016/j.aca.2005.08.042] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2005] [Revised: 08/12/2005] [Accepted: 08/16/2005] [Indexed: 11/24/2022]
Abstract
Advancements of materials research have profound direct impacts on developments in analytical chemistry and may hold the key to improvement of existing or new techniques at present times and near future. Applications of materials in analytical chemistry are reviewed, with focus on sensors, separations and extraction techniques. This review aims to survey examples of interesting works carried out in the last five years over a broad spectrum of materials classified as hybrids, nanomaterials and biomolecular materials.
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Affiliation(s)
- Lin He
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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Pandey PC, Upadhyay BC. Role of palladium in the redox electrochemistry of ferrocene monocarboxylic acid encapsulated within ORMOSIL networks. Molecules 2005; 10:728-39. [PMID: 18007341 PMCID: PMC6147674 DOI: 10.3390/10060728] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2004] [Accepted: 01/14/2005] [Indexed: 11/26/2022] Open
Abstract
We report herein the effect of palladium on the redox electrochemistry of ferrocene monocarboxylic acid encapsulated within an organically modified sol-gel glass network (ORMOSIL). It has been found that amount of palladium and its geometrical distribution significantly alter the redox electrochemistry of FcMCA. The geometrical distribution of palladium has been controlled by two methods: (i) palladium is allowed to link within nanostructured network of the ORMOSIL which was subsequently availed from the reactivity of palladium chloride and trimethoxysilane; (ii) palladium powder is encapsulated together FcMCA thus allowing the presence of palladium within the nanoporous domain. The content of palladium is varied by controlling the reaction dynamics of palladium chloride and trimethoxysilane interaction. For this we initially allowed to trigger hydrolysis, condensation and poly-condensation of trimethoxysilane and dimethyldiethoxysilane in acidic medium and subsequently partially dried ORMOSIL film was allowed to interact with palladium chloride. Even with partially dried ORMOSIL derived from trimethoxysilane and dimethyldiethoxysilane undergoes rapid interaction with palladium chloride and the transparent color of ORMOSIL changed to a black colour due to the formation of palladium silicon linkage. The palladium-silicon linkage has been identified by NMR, UV-VIS and transmission electron spectroscopy. The electrochemistry of FcMCA encapsulated within such an ORMOSIL matrix has been studied. Excellent redox electrochemistry of ferrocene monocarboxylic acid having peak potential separation tending to 0 for a multilayered electrode was investigated. The palladium content has been found to affect the redox electrochemistry of ferrocene as well as electrocatalytic efficiency of new ORMOSIL material. The electroanalysis of NADH is reported. The modified electrode is very sensitive to NADH with lowest detection limit of < 1 microM.
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Affiliation(s)
- P C Pandey
- Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi-221, India.
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