401
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Wang X, Lu X, Wu L, Chen J. 3D metal-organic framework as highly efficient biosensing platform for ultrasensitive and rapid detection of bisphenol A. Biosens Bioelectron 2015; 65:295-301. [DOI: 10.1016/j.bios.2014.10.010] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 09/24/2014] [Accepted: 10/05/2014] [Indexed: 10/24/2022]
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402
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Zhang P, Zhao X, Ji Y, Ouyang Z, Wen X, Li J, Su Z, Wei G. Electrospinning graphene quantum dots into a nanofibrous membrane for dual-purpose fluorescent and electrochemical biosensors. J Mater Chem B 2015; 3:2487-2496. [PMID: 32262123 DOI: 10.1039/c4tb02092h] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Graphene quantum dots (GQDs) have become increasingly important for applications in energy materials, optical devices and biosensors. Here we report a facile technique to fabricate a nanofibrous membrane of GQDs by electrospinning water-soluble GQDs with polyvinyl alcohol (PVA) directly. The structure and fluorescence properties of the fabricated PVA/GQD nanofibrous membrane were investigated using scanning and transmission electron microscopy, and fluorescence microscopy. It was found that the electrospun PVA/GQD nanofibrous membrane has a three-dimensional structure with a high surface area to volume ratio, which is beneficial for the adsorption of electrolytes and the diffusion of reactants. For the first time, the created PVA/GQD nanofibrous membrane was utilized to fabricate dual-purpose fluorescent and electrochemical biosensors for highly sensitive determination of hydrogen peroxide (H2O2) and glucose. The experimental results indicated that the fluorescence intensity of the nanofibrous membrane decreased linearly with increasing H2O2 concentration, because the addition of H2O2 leads to fluorescence quenching of the GQDs, which endows the fabricated nanofibrous membrane with fluorescence activity. Besides, after binding glucose oxidase onto the created nanofibrous membrane, the fabricated nanofibrous membrane showed high sensitivity and selectivity for glucose detection. In addition, the PVA/GQD nanofibrous membrane can also be directly electrospun onto an electrode for electrochemical detection of H2O2. This novel nanofibrous membrane exhibits excellent catalytic performance and fluorescence activity, and therefore has potential applications for the highly stable, sensitive, and selective detection of H2O2 and glucose.
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Affiliation(s)
- Panpan Zhang
- Beijing Key Laboratory on Preparation and Processing of Novel Polymeric Materials, Beijing University of Chemical Technology, 100029 Beijing, China.
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403
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Li L, Wang Y, Pan L, Shi Y, Cheng W, Shi Y, Yu G. A nanostructured conductive hydrogels-based biosensor platform for human metabolite detection. NANO LETTERS 2015; 15:1146-51. [PMID: 25569673 DOI: 10.1021/nl504217p] [Citation(s) in RCA: 244] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The development of a scalable, low-cost, and versatile biosensor platform for the sensitive and rapid detection of human metabolites is of great interest for healthcare, pharmaceuticals, and medical science. On the basis of hierarchically nanostructured conducting polymer hydrogels, we designed a flexible biosensor platform that can detect various human metabolites, such as uric acid, cholesterol, and triglycerides. Owing to the unique features of conducting polymer hydrogels, such as high permeability to biosubstrates and rapid electron transfer, our biosensors demonstrate excellent sensing performance with a wide linear range (uric acid, 0.07-1 mM; cholesterol, 0.3-9 mM, and triglycerides, 0.2-5 mM), high sensitivity, low sensing limit, and rapid response time (∼3 s). Given the facile and scalable processability of hydrogels, the proposed conductive hydrogels-based biosensor platform shows great promise as a low-cost sensor kit for healthcare monitoring, clinical diagnostics, and biomedical devices.
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Affiliation(s)
- Lanlan Li
- Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, China
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404
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Kim JH, Jun SA, Kwon Y, Ha S, Sang BI, Kim J. Enhanced electrochemical sensitivity of enzyme precipitate coating (EPC)-based glucose oxidase biosensors with increased free CNT loadings. Bioelectrochemistry 2015; 101:114-9. [DOI: 10.1016/j.bioelechem.2014.08.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 08/13/2014] [Accepted: 08/19/2014] [Indexed: 11/27/2022]
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405
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DiSanto RM, Subramanian V, Gu Z. Recent advances in nanotechnology for diabetes treatment. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2015; 7:548-64. [PMID: 25641955 DOI: 10.1002/wnan.1329] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 09/10/2014] [Accepted: 11/08/2014] [Indexed: 12/11/2022]
Abstract
Nanotechnology in diabetes research has facilitated the development of novel glucose measurement and insulin delivery modalities which hold the potential to dramatically improve quality of life for diabetics. Recent progress in the field of diabetes research at its interface with nanotechnology is our focus. In particular, we examine glucose sensors with nanoscale components including metal nanoparticles and carbon nanostructures. The addition of nanoscale components commonly increases glucose sensor sensitivity, temporal response, and can lead to sensors which facilitate continuous in vivo glucose monitoring. Additionally, we survey nanoscale approaches to 'closed-loop' insulin delivery strategies which automatically release insulin in response to fluctuating blood glucose levels (BGLs). 'Closing the loop' between BGL measurements and insulin administration by removing the requirement of patient action holds the potential to dramatically improve the health and quality of life of diabetics. Advantages and limitations of current strategies, as well as future opportunities and challenges are also discussed.
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Affiliation(s)
- Rocco Michael DiSanto
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA
| | - Vinayak Subramanian
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA
| | - Zhen Gu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC, USA.,Molecular Pharmaceutics Division, Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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406
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Zhu C, Yang G, Li H, Du D, Lin Y. Electrochemical sensors and biosensors based on nanomaterials and nanostructures. Anal Chem 2015; 87:230-49. [PMID: 25354297 PMCID: PMC4287168 DOI: 10.1021/ac5039863] [Citation(s) in RCA: 807] [Impact Index Per Article: 89.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Chengzhou Zhu
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Guohai Yang
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - He Li
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Dan Du
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yuehe Lin
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
- Pacific
Northwest National Laboratory, Richland, Washington 99352, United States
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407
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Kundu MK, Sadhukhan M, Barman S. Ordered assemblies of silver nanoparticles on carbon nitride sheets and their application in the non-enzymatic sensing of hydrogen peroxide and glucose. J Mater Chem B 2015; 3:1289-1300. [DOI: 10.1039/c4tb01740d] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile fabrication of an ordered assembly of silver nanoparticles on carbon nitride sheets is reported. A modified glassy carbon electrode with carbon nitride sheets doped with silver nanoparticles can be used as a sensitive electrochemical sensor for hydrogen peroxide and glucose.
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Affiliation(s)
- Manas Kumar Kundu
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- Bhubaneswar
- India
| | - Mriganka Sadhukhan
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- Bhubaneswar
- India
| | - Sudip Barman
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- Bhubaneswar
- India
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408
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Song Y, Zhu C, Li H, Du D, Lin Y. A nonenzymatic electrochemical glucose sensor based on mesoporous Au/Pt nanodendrites. RSC Adv 2015. [DOI: 10.1039/c5ra16953d] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, an ultrasensitive and reliable nonenzymatic electrochemical glucose sensor has been developed, which is based on mesoporous Au/Pt nanodendrites prepared by a facile route aided by ultrasonication under mild conditions.
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Affiliation(s)
- Yang Song
- School of Mechanical and Material Engineering
- Washington State University
- Pullman
- USA
| | - Chenzhou Zhu
- School of Mechanical and Material Engineering
- Washington State University
- Pullman
- USA
| | - He Li
- School of Mechanical and Material Engineering
- Washington State University
- Pullman
- USA
- School of Biological Science and Technology
| | - Dan Du
- School of Mechanical and Material Engineering
- Washington State University
- Pullman
- USA
| | - Yuehe Lin
- School of Mechanical and Material Engineering
- Washington State University
- Pullman
- USA
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409
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Zheng Q, Wu H, Shen Z, Gao W, Yu Y, Ma Y, Guang W, Guo Q, Yan R, Wang J, Ding K. An electrochemical DNA sensor based on polyaniline/graphene: high sensitivity to DNA sequences in a wide range. Analyst 2015; 140:6660-70. [DOI: 10.1039/c5an01088h] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In the platform constructed by a polyaniline/graphene composite, double-stranded DNA, resulting from hybridization of a DNA probe, was escaping from or remaining on the sensor surface.
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410
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Tang W, Li L, Zeng X. A glucose biosensor based on the synergistic action of nanometer-sized TiO2 and polyaniline. Talanta 2015; 131:417-23. [DOI: 10.1016/j.talanta.2014.08.019] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 10/24/2022]
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411
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Sultan A, Ahmad S, Anwer T, Mohammad F. Binary doped polypyrrole and polypyrrole/boron nitride nanocomposites: preparation, characterization and application in detection of liquefied petroleum gas leaks. RSC Adv 2015. [DOI: 10.1039/c5ra21173e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
We report an electrical conductivity based rapid response liquefied petroleum gas (LPG) sensor using binary doped polypyrrole and polypyrrole/boron nitride (PPy/BN) nanocomposites as the conductive material.
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Affiliation(s)
- Adil Sultan
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Sharique Ahmad
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Tarique Anwer
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Faiz Mohammad
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
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412
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Patra S, Hidalgo Crespo T, Permyakova A, Sicard C, Serre C, Chaussé A, Steunou N, Legrand L. Design of metal organic framework–enzyme based bioelectrodes as a novel and highly sensitive biosensing platform. J Mater Chem B 2015; 3:8983-8992. [DOI: 10.1039/c5tb01412c] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The mesoporous iron(iii) trimesate MIL-100(Fe) based biosensor presents very interesting electrocatalytic performances for glucose detection.
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Affiliation(s)
- Snehangshu Patra
- CNRS UMR 8587 Bd François Mitterrand 91025 Evry
- France
- Université d’Evry
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement (LAMBE)
- Université Evry
| | | | | | - Clémence Sicard
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- UVSQ
- 78035 Versailles Cedex
- France
| | - Christian Serre
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- UVSQ
- 78035 Versailles Cedex
- France
| | - Annie Chaussé
- CNRS UMR 8587 Bd François Mitterrand 91025 Evry
- France
- Université d’Evry
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement (LAMBE)
- Université Evry
| | - Nathalie Steunou
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- UVSQ
- 78035 Versailles Cedex
- France
| | - Ludovic Legrand
- CNRS UMR 8587 Bd François Mitterrand 91025 Evry
- France
- Université d’Evry
- Laboratoire Analyse et Modélisation pour la Biologie et l’Environnement (LAMBE)
- Université Evry
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413
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Wang Z, Zhang L, Tian Y. A durable non-enzymatic electrochemical sensor for monitoring H2O2 in rat brain microdialysates based on one-step fabrication of hydrogels. Analyst 2015; 140:3788-93. [DOI: 10.1039/c4an02003k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A non-enzymatic electrochemical H2O2 sensor was developed by in situ fabrication of biocompatible chitosan hydrogels, in which a specific recognition molecule for H2O2 – thionine – was stably immobilized via one-step electrodeposition.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
| | - Limin Zhang
- Department of Chemistry
- East China Normal University
- Shanghai 200062
- China
| | - Yang Tian
- Department of Chemistry
- Tongji University
- Shanghai 200092
- China
- Department of Chemistry
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414
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Chartuprayoon N, Zhang M, Bosze W, Choa YH, Myung NV. One-dimensional nanostructures based bio-detection. Biosens Bioelectron 2015; 63:432-443. [DOI: 10.1016/j.bios.2014.07.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 07/05/2014] [Accepted: 07/17/2014] [Indexed: 11/17/2022]
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415
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Wang Y, Jin J, Yuan C, Zhang F, Ma L, Qin D, Shan D, Lu X. A novel electrochemical sensor based on zirconia/ordered macroporous polyaniline for ultrasensitive detection of pesticides. Analyst 2015; 140:560-6. [DOI: 10.1039/c4an00981a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A simple and mild strategy was proposed to develop a novel electrochemical sensor based on zirconia/ordered macroporous polyaniline (ZrO2/OMP) and further used for the detection of methyl parathion (MP), one of the organophosphate pesticides (OPPs).
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Affiliation(s)
- Yonglan Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Jun Jin
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Caixia Yuan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Fan Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Linlin Ma
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Dongdong Qin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Duoliang Shan
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- P. R. China
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416
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Zhang L, Zhou C, Luo J, Long Y, Wang C, Yu T, Xiao D. A polyaniline microtube platform for direct electron transfer of glucose oxidase and biosensing applications. J Mater Chem B 2015; 3:1116-1124. [DOI: 10.1039/c4tb01604a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polyaniline microtube platform was fabricated for direct electron transfer of glucose oxidase and biosensing applications.
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Affiliation(s)
- Lei Zhang
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
| | - Cuisong Zhou
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
| | - Jiaojiao Luo
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
| | - Yuyin Long
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
| | - Congmin Wang
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
| | - Tingting Yu
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
| | - Dan Xiao
- College of Chemistry
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- Sichuan University
- Chengdu
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417
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Zhou TY, Qi QY, Zhao QL, Fu J, Liu Y, Ma Z, Zhao X. Highly thermally stable hydrogels derived from monolayered two-dimensional supramolecular polymers. Polym Chem 2015. [DOI: 10.1039/c5py00072f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogels have been constructed from monolayered two-dimensional (2D) supramolecular polymers in water. The as-prepared hydrogels exhibited extremely high thermal stabilities, which demonstrates how the 2D structure can impact the bulk properties of soft materials.
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Affiliation(s)
- Tian-You Zhou
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai
- China
| | - Qiao-Yan Qi
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai
- China
| | - Qiao-Ling Zhao
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai
- China
| | - Jie Fu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai
- China
| | - Yi Liu
- The Molecular Foundry
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Zhi Ma
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai
- China
| | - Xin Zhao
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai
- China
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418
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A non-enzymatic hydrogen peroxide sensor based on platinum nanoparticle–polyaniline nanocomposites hosted in mesoporous silica film. J Electroanal Chem (Lausanne) 2015. [DOI: 10.1016/j.jelechem.2014.11.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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419
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Chen PY, Dorval Courchesne NM, Hyder MN, Qi J, Belcher AM, Hammond PT. Carbon nanotube–polyaniline core–shell nanostructured hydrogel for electrochemical energy storage. RSC Adv 2015. [DOI: 10.1039/c5ra02944a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Highly porous three-dimensional core (carbon nanotube)–shell (polyaniline) conductive hydrogels synergize the advantageous features of hydrogels and conductive materials, showing enhanced electrical conductivity and electrochemical activity.
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Affiliation(s)
- Po-Yen Chen
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
- The David H. Koch Institute for Integrative Cancer Research
| | - Noémie-Manuelle Dorval Courchesne
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
- The David H. Koch Institute for Integrative Cancer Research
| | - Md Nasim Hyder
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
- The David H. Koch Institute for Integrative Cancer Research
| | - Jifa Qi
- The David H. Koch Institute for Integrative Cancer Research
- Massachusetts Institute of Technology
- Cambridge
- USA
- Department of Materials Science and Engineering
| | - Angela M. Belcher
- The David H. Koch Institute for Integrative Cancer Research
- Massachusetts Institute of Technology
- Cambridge
- USA
- Department of Materials Science and Engineering
| | - Paula T. Hammond
- Department of Chemical Engineering
- Massachusetts Institute of Technology
- Cambridge
- USA
- The David H. Koch Institute for Integrative Cancer Research
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420
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Li G, Liu Y, Xu W, Song A, Hao J. Transition of Phase Structures in Mixtures of Lysine and Fatty Acids. J Phys Chem B 2014; 118:14843-51. [DOI: 10.1021/jp510747y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Guihua Li
- Key Laboratory for Colloid
and Interface Chemistry & Key Laboratory of Special Aggregated
Materials, Shandong University, Ministry of Education, Jinan 250100, China
| | - Yuliang Liu
- Key Laboratory for Colloid
and Interface Chemistry & Key Laboratory of Special Aggregated
Materials, Shandong University, Ministry of Education, Jinan 250100, China
| | - Wenlong Xu
- Key Laboratory for Colloid
and Interface Chemistry & Key Laboratory of Special Aggregated
Materials, Shandong University, Ministry of Education, Jinan 250100, China
| | - Aixin Song
- Key Laboratory for Colloid
and Interface Chemistry & Key Laboratory of Special Aggregated
Materials, Shandong University, Ministry of Education, Jinan 250100, China
| | - Jingcheng Hao
- Key Laboratory for Colloid
and Interface Chemistry & Key Laboratory of Special Aggregated
Materials, Shandong University, Ministry of Education, Jinan 250100, China
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421
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Ultrasensitive non-enzymatic glucose sensor based on three-dimensional network of ZnO-CuO hierarchical nanocomposites by electrospinning. Sci Rep 2014; 4:7382. [PMID: 25488502 PMCID: PMC4260231 DOI: 10.1038/srep07382] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/19/2014] [Indexed: 02/07/2023] Open
Abstract
Three-dimensional (3D) porous ZnO-CuO hierarchical nanocomposites (HNCs) nonenzymatic glucose electrodes with different thicknesses were fabricated by coelectrospinning and compared with 3D mixed ZnO/CuO nanowires (NWs) and pure CuO NWs electrodes. The structural characterization revealed that the ZnO-CuO HNCs were composed of the ZnO and CuO mixed NWs trunk (~200 nm), whose outer surface was attached with small CuO nanoparticles (NPs). Moreover, a good synergetic effect between CuO and ZnO was confirmed. The nonenzymatic biosensing properties of as prepared 3D porous electrodes based on fluorine doped tin oxide (FTO) were studied and the results indicated that the sensing properties of 3D porous ZnO-CuO HNCs electrodes were significantly improved and depended strongly on the thickness of the HNCs. At an applied potential of + 0.7 V, the optimum ZnO-CuO HNCs electrode presented a high sensitivity of 3066.4 μAmM(-1)cm(-2), the linear range up to 1.6 mM, and low practical detection limit of 0.21 μM. It also showed outstanding long term stability, good reproducibility, excellent selectivity and accurate measurement in real serum sample. The formation of special hierarchical heterojunction and the well-constructed 3D structure were the main reasons for the enhanced nonenzymatic biosensing behavior.
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422
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Shi Y, Su P, Wang Y, Yang Y. Fe3O4 peroxidase mimetics as a general strategy for the fluorescent detection of H2O2-involved systems. Talanta 2014; 130:259-64. [DOI: 10.1016/j.talanta.2014.06.053] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/19/2014] [Accepted: 06/22/2014] [Indexed: 11/15/2022]
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423
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Amaya T, Isaji T, Abe M, Hirao T. Synthesis of Polyaniline and Transition Metal Nanoparticles Hybrids. J Inorg Organomet Polym Mater 2014. [DOI: 10.1007/s10904-014-0123-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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424
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Zhao M, Cai B, Ma Y, Cai H, Huang J, Pan X, He H, Ye Z. Self-assemble ZnMn2O4 hierarchical hollow microspheres into self-supporting architecture for enhanced biosensing performance. Biosens Bioelectron 2014; 61:443-7. [DOI: 10.1016/j.bios.2014.05.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/22/2014] [Accepted: 05/22/2014] [Indexed: 11/28/2022]
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425
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Shang L, Zhao F, Zeng B. 3D porous graphene-porous PdCu alloy nanoparticles-molecularly imprinted poly(para-aminobenzoic acid) composite for the electrocatalytic assay of melamine. ACS APPLIED MATERIALS & INTERFACES 2014; 6:18721-7. [PMID: 25313966 DOI: 10.1021/am504276g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this work, a three-dimensional hybrid film with in- and out-of-plane pores was fabricated by using porous graphene as framework structure and porous PdCu alloy nanoparticles as building blocks. The porous PdCu alloy nanoparticles were prepared by chemical dealloying with acetic acid. The hierarchical pores had abundant active catalytic sites, and the material exhibited remarkable catalytic activity toward the oxidation of hydrazine. Based on this hybrid film, an electrochemical sensor of melamine was developed by further introducing melamine imprinted electro-polymer of para-aminobenzoic acid. Melamine was detected by differential pulse voltammetry using hydrazine as electrochemical probe. The detection signal was amplified due to the catalytic oxidation of hydrazine at this hybrid film. The linear determination range was 0.01-1 μM and the detection limit was 2 nM (S/N = 3). The sensor displayed high recognition capacity toward melamine and also showed good reproducibility and stability. It is promising in the determination of melamine in real samples.
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Affiliation(s)
- Lei Shang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, Hubei Province, P. R. China
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426
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Isaji T, Amaya T, Inada Y, Abe M, Hirao T. Preparation of Polyaniline–Pt Nanoparticles via Ligand Exchange from Starch–Pt Nanoparticles. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tadayuki Isaji
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
- Nissan Chemical Industries, Ltd
| | - Toru Amaya
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | - Yuhi Inada
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
| | | | - Toshikazu Hirao
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University
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427
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Lee KT, Liu DM, Liang YY, Matsushita N, Ikoma T, Lu SY. Porous fluorine-doped tin oxide as a promising substrate for electrochemical biosensors—demonstration in hydrogen peroxide sensing. J Mater Chem B 2014; 2:7779-7784. [DOI: 10.1039/c4tb01191k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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428
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In-situ synthesis of silver nanoparticles on resin microspheres composed of poly(m-aminophenol), and their application in an enzymatic glucose biosensor. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1344-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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429
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Wang L, Huang H, Xiao S, Cai D, Liu Y, Liu B, Wang D, Wang C, Li H, Wang Y, Li Q, Wang T. Enhanced sensitivity and stability of room-temperature NH₃ sensors using core-shell CeO₂ nanoparticles@cross-linked PANI with p-n heterojunctions. ACS APPLIED MATERIALS & INTERFACES 2014; 6:14131-40. [PMID: 25036558 DOI: 10.1021/am503286h] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
We report a room-temperature NH3 gas sensor with high response and great long-term stability, including CeO2 NPs conformally coated by cross-linked PANI hydrogel. Such core-shell nanocomposites were prepared by in situ polymerization with different weight ratios of CeO2 NPs and aniline. At room temperature, the nanohybrids showed enhanced response (6.5 to 50 ppm of NH3), which could be attributed to p-n junctions formed by the intimate contact between these two materials. Moreover, the stability was discussed in terms of phytic acid working as a gelator, which helped the PANI sheath accommodate itself and enhance the mechanical strength and chemical stability of the sensors by avoiding "swelling effect" in high relative humidity. The sensors maintained its sensing characteristic (response of ca. 6.5 to 50 ppm of NH3) in 15 days. Herein, the obtained results could help to accelerate the development of ammonia gas sensor.
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Affiliation(s)
- Lingling Wang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University , Xiamen, China
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430
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Maji SK, Sreejith S, Mandal AK, Ma X, Zhao Y. Immobilizing gold nanoparticles in mesoporous silica covered reduced graphene oxide: a hybrid material for cancer cell detection through hydrogen peroxide sensing. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13648-13656. [PMID: 25046127 DOI: 10.1021/am503110s] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new kind of two-dimensional (2-D) hybrid material (RGO-PMS@AuNPs), fabricated by the immobilization of ultrasmall gold nanoparticles (AuNPs, ∼3 nm) onto sandwich-like periodic mesopourous silica (PMS) coated reduced graphene oxide (RGO), was employed for both electrocatalytic application and cancer cell detection. The hybrid-based electrode sensor showed attractive electrochemical performance for sensitive and selective nonenzymatic detection of hydrogen peroxide (H2O2) in 0.1 M phosphate buffered saline, with wide linear detection range (0.5 μM to 50 mM), low detection limit (60 nM), and good sensitivity (39.2 μA mM(-1) cm(-2)), and without any interference by common interfering agents. In addition, the sensor exhibited a high capability for glucose sensing and H2O2 detection in human urine. More interestingly, the hybrid was found to be nontoxic, and the electrode sensor could sensitively detect a trace amount of H2O2 in a nanomolar level released from living tumor cells (HeLa and HepG2). Because the hybrid presents significant properties for the detection of bioactive species and certain cancerous cells by the synergistic effect from RGO, PMS, and AuNPs, it could be able to serve as a versatile platform for biosensing, bioanalysis, and biomedical applications.
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Affiliation(s)
- Swarup Kumar Maji
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, Singapore 637371, Singapore
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431
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Adley CC. Past, Present and Future of Sensors in Food Production. Foods 2014; 3:491-510. [PMID: 28234333 PMCID: PMC5302250 DOI: 10.3390/foods3030491] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/18/2014] [Accepted: 07/21/2014] [Indexed: 12/16/2022] Open
Abstract
Microbial contamination management is a crucial task in the food industry. Undesirable microbial spoilage in a modern food processing plant poses a risk to consumers' health, causing severe economic losses to the manufacturers and retailers, contributing to wastage of food and a concern to the world's food supply. The main goal of the quality management is to reduce the time interval between the filling and the detection of a microorganism before release, from several days, to minutes or, at most, hours. This would allow the food company to stop the production, limiting the damage to just a part of the entire batch, with considerable savings in terms of product value, thereby avoiding the utilization of raw materials, packaging and strongly reducing food waste. Sensor systems offer major advantages over current systems as they are versatile and affordable but need to be integrated in the existing processing systems as a process analytical control (PAT) tool. The desire for good selectivity, low cost, portable and usable at working sites, sufficiently rapid to be used at-line or on-line, and no sample preparation devices are required. The application of biosensors in the food industry still has to compete with the standard analytical techniques in terms of cost, performance and reliability.
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Affiliation(s)
- Catherine C Adley
- Microbiology Laboratory, Department of Chemical and Environmental Sciences, University of Limerick, Limerick, Ireland.
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432
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Direct electrochemical analysis of glucose oxidase on a graphene aerogel/gold nanoparticle hybrid for glucose biosensing. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2608-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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433
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Synthesis of hollow Pt–Ni–graphene nanostructures for nonenzymatic glucose detection. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.05.012] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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434
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Yetisen AK, Montelongo Y, da Cruz Vasconcellos F, Martinez-Hurtado JL, Neupane S, Butt H, Qasim MM, Blyth J, Burling K, Carmody JB, Evans M, Wilkinson TD, Kubota LT, Monteiro MJ, Lowe CR. Reusable, robust, and accurate laser-generated photonic nanosensor. NANO LETTERS 2014; 14:3587-93. [PMID: 24844116 DOI: 10.1021/nl5012504] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Developing noninvasive and accurate diagnostics that are easily manufactured, robust, and reusable will provide monitoring of high-risk individuals in any clinical or point-of-care environment. We have developed a clinically relevant optical glucose nanosensor that can be reused at least 400 times without a compromise in accuracy. The use of a single 6 ns laser (λ = 532 nm, 200 mJ) pulse rapidly produced off-axis Bragg diffraction gratings consisting of ordered silver nanoparticles embedded within a phenylboronic acid-functionalized hydrogel. This sensor exhibited reversible large wavelength shifts and diffracted the spectrum of narrow-band light over the wavelength range λpeak ≈ 510-1100 nm. The experimental sensitivity of the sensor permits diagnosis of glucosuria in the urine samples of diabetic patients with an improved performance compared to commercial high-throughput urinalysis devices. The sensor response was achieved within 5 min, reset to baseline in ∼10 s. It is anticipated that this sensing platform will have implications for the development of reusable, equipment-free colorimetric point-of-care diagnostic devices for diabetes screening.
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Affiliation(s)
- Ali K Yetisen
- Department of Chemical Engineering and Biotechnology, University of Cambridge , Tennis Court Road, Cambridge CB2 1QT, United Kingdom
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435
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Song S, Wang H, Song A, Dong S, Hao J. Sponge Phase Producing Porous CeO2for Catalytic Oxidation of CO. Chemistry 2014; 20:9063-72. [DOI: 10.1002/chem.201304836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 03/13/2014] [Indexed: 11/09/2022]
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436
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Study of glucose biosensor lifetime improvement in 37°C serum based on PANI enzyme immobilization and PLGA biodegradable membrane. Biosens Bioelectron 2014; 56:91-6. [DOI: 10.1016/j.bios.2014.01.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 01/08/2014] [Accepted: 01/08/2014] [Indexed: 11/23/2022]
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437
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Zhang P, Zhao X, Zhang X, Lai Y, Wang X, Li J, Wei G, Su Z. Electrospun doping of carbon nanotubes and platinum nanoparticles into the β-phase polyvinylidene difluoride nanofibrous membrane for biosensor and catalysis applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:7563-7571. [PMID: 24754739 DOI: 10.1021/am500908v] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel β-phase polyvinylidene difluoride (PVDF) nanofibrous membrane decorated with multiwalled carbon nanotubes (MWCNTs) and platinum nanoparticles (PtNPs) was fabricated by an improved electrospinning technique. The morphology of the fabricated PVDF-MWCNT-PtNP nanofibrous membrane was observed by scanning electron microscopy, and the formation of high β-phase in the hybrid nanofibrous membrane was investigated by Fourier transform infrared spectroscopy and differential scanning calorimetry. The uniform dispersion of MWCNTs and PtNPs in the PVDF hybrid nanofibrous membrane and their interaction were explored by transmission electron microscopy and X-ray diffraction. For the first time, we utilized this created PVDF-MWCNT-PtNP nanofibrous membrane for biosensor and catalysis applications. The nonenzymatic amperometric biosensor with highly stable and sensitive, and selective detection of both H2O2 and glucose was successfully fabricated based on the electrospun PVDF-MWCNT-PtNP nanofibrous membrane. In addition, the catalysis of the hybrid nanofibrous membrane for oxygen reduction reaction was tested, and a good catalysis performance was found. We anticipate that the strategies utilized in this work will not only guide the further design of functional nanofiber-based biomaterials and biodevices but also extend the potential applications in energy storage, cytology, and tissue engineering.
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Affiliation(s)
- Panpan Zhang
- Beijing Key Laboratory on Preparation and Processing of Novel Polymeric Materials, Beijing University of Chemical Technology , 100029 Beijing, China
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438
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Synthesis and electromechanical actuation of a temperature, pH, and electrically responsive hydrogel. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0466-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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439
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García M, Batalla P, Escarpa A. Metallic and polymeric nanowires for electrochemical sensing and biosensing. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.01.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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440
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Haraguchi K, Varade D. Platinum–polymer–clay nanocomposite hydrogels via exfoliated clay-mediated in situ reduction. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.03.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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441
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Zhang S, Zhang D, Sheng Q, Zheng J. PANI–TiC nanocomposite film for the direct electron transfer of hemoglobin and its application for biosensing. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2462-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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442
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Nickel oxide hollow microsphere for non-enzyme glucose detection. Biosens Bioelectron 2014; 54:251-7. [DOI: 10.1016/j.bios.2013.11.006] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 10/13/2013] [Accepted: 11/02/2013] [Indexed: 11/20/2022]
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443
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Hu C, Yang DP, Zhu F, Jiang F, Shen S, Zhang J. Enzyme-labeled Pt@BSA nanocomposite as a facile electrochemical biosensing interface for sensitive glucose determination. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4170-4178. [PMID: 24575892 DOI: 10.1021/am405841k] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Electrocatalytic reactions of glucose oxidation based on enzyme-labeled electrochemical biosensors demand a high enzymatic activity and fast electron transfer property to produce the amplified signal response. Through a "green" synthesis method, Pt@BSA nanocomposite was prepared as a biosensing interface for the first time. Herein we presented a convenient and effective glucose sensing matrix based on Pt@BSA nanocomposite along with the covalent adsorption of glucose oxidase (GOD). The electrocatalytic activity toward oxygen reduction was significantly enhanced due to the excellent bioactivity of anchored GOD and superior catalytic performance of interior platinum nanoparticles, which was gradually restrained with the addition of glucose. A sensitive glucose biosensor was then successfully developed upon the restrained oxygen reduction peak current. Differential pulse voltammetry (DPV) was employed to investigate the determination performance of the enzyme biosensor, resulting in a linear response range from 0.05 to 12.05 mM with an optimal detection limit of 0.015 mM. The as-proposed sensing technique revealed high selectivity against endogenous interfering species, satisfactory storage stability, acceptable durability, and favorable fabrication reproducibility with the RSD of 3.8%. During the practical application in human blood serum samples, this glucose biosensor obtained a good detection accuracy of analytical recoveries within 97.5 to 104.0%, providing an alternative scheme for glucose level assay in clinical application.
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Affiliation(s)
- Chenyi Hu
- Institute of Fuel Cell, Ministry of Education Key Laboratory of Power Machinery and Engineering, Shanghai Jiao Tong University , Shanghai 200240, China
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444
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Kim HJ, Choi K, Baek Y, Kim DG, Shim J, Yoon J, Lee JC. High-performance reverse osmosis CNT/polyamide nanocomposite membrane by controlled interfacial interactions. ACS APPLIED MATERIALS & INTERFACES 2014; 6:2819-2829. [PMID: 24467487 DOI: 10.1021/am405398f] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polyamide reverse osmosis (RO) membranes with carbon nanotubes (CNTs) are prepared by interfacial polymerization using trimesoyl chloride (TMC) solutions in n-hexane and aqueous solutions of m-phenylenediamine (MPD) containing functionalized CNTs. The functionalized CNTs are prepared by the reactions of pristine CNTs with acid mixture (sulfuric acid and nitric acid of 3:1 volume ratio) by varying amounts of acid, reaction temperature, and reaction time. CNTs prepared by an optimized reaction condition are found to be well-dispersed in the polyamide layer, which is confirmed from atomic force microscopy, scanning electron microscopy, and Raman spectroscopy studies. The polyamide RO membranes containing well-dispersed CNTs exhibit larger water flux values than polyamide membrane prepared without any CNTs, although the salt rejection values of these membranes are close. Furthermore, the durability and chemical resistance against NaCl solutions of the membranes containing CNTs are found to be improved compared with those of the membrane without CNTs. The high membrane performance (high water flux and salt rejection) and the improved stability of the polyamide membranes containing CNTs are ascribed to the hydrophobic nanochannels of CNTs and well-dispersed states in the polyamide layers formed through the interactions between CNTs and polyamide in the active layers.
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Affiliation(s)
- Hee Joong Kim
- School of Chemical and Biological Engineering and Institute of Chemical Process, Seoul National University , 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
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445
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Song Y, Liu H, Tan H, Xu F, Jia J, Zhang L, Li Z, Wang L. pH-Switchable Electrochemical Sensing Platform based on Chitosan-Reduced Graphene Oxide/Concanavalin A Layer for Assay of Glucose and Urea. Anal Chem 2014; 86:1980-7. [DOI: 10.1021/ac402742m] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yonghai Song
- College of Chemistry
and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Hongyu Liu
- College of Chemistry
and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Hongliang Tan
- College of Chemistry
and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Fugang Xu
- College of Chemistry
and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
| | - Jianbo Jia
- State Key
Lab
of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Lixue Zhang
- Qingdao Institute
of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Zhuang Li
- State Key
Lab
of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Li Wang
- College of Chemistry
and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China
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446
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Abstract
A transmission electron microscopy (TEM) grid filled with 4-cyno-4-pentylbiphenyl (5CB) on the octadecyltrichloro silane-coated glass in an aqueous medium was developed to construct a glucose biosensor by coating poly(acrylicacid-b-4-cynobiphenyl-4-oxyundecylacrylate) (PAA-b-LCP) at the aqueous/5CB interface and immobilizing glucose oxidase (GOx) covalently to the PAA chains. The glucose was detected from a homeotropic to planar orientational transition of 5CB by polarized optical microscopy under crossed polarizers. The maximum immobilization density of the GOx, 1.3 molecules/nm(2) obtained in this TEM grid cell enabled the detection of glucose at concentrations as low as 0.02 mM with a response time of 10 s. This liquid crystal-based glucose sensor provided a linear response of birefringence of the 5CB to glucose concentrations ranging from 0.05 to 2 mM with a Michaelis-Menten constant (Km) of 0.32 mM. This new and sensitive glucose biosensor has the merits of low production cost and easy detection through the naked eye and might be useful for prescreening the glucose level in the human body.
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Affiliation(s)
- Mashooq Khan
- Department of Polymer Science & Engineering, Kyungpook National University , #1370 Sangyuk-dong, Buk-gu, Daegu 702-701, Korea
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447
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Glucose biosensor based on a platinum electrode modified with rhodium nanoparticles and with glucose oxidase immobilized on gold nanoparticles. Mikrochim Acta 2014. [DOI: 10.1007/s00604-013-1143-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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448
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Hu D, Sheng Z, Fang S, Wang Y, Gao D, Zhang P, Gong P, Ma Y, Cai L. Folate receptor-targeting gold nanoclusters as fluorescence enzyme mimetic nanoprobes for tumor molecular colocalization diagnosis. Theranostics 2014; 4:142-53. [PMID: 24465272 PMCID: PMC3900799 DOI: 10.7150/thno.7266] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/27/2013] [Indexed: 12/25/2022] Open
Abstract
Nanoprobes with enzyme-like properties attracted a growing interest in early screening and diagnosis of cancer. To achieve high accuracy and specificity of tumor detection, the design and preparation of enzyme mimetic nanoprobes with high enzyme activity, tumor targeting and excellent luminescence property is highly desirable. Herein, we described a novel kind of fluorescence enzyme mimetic nanoprobe based on folate receptor-targeting Au nanoclusters. The nanoprobes exhibited excellent stability, low cytotoxicity, high fluorescence and enzyme activity. We demonstrated that the nanoprobes could be used for tumor tissues fluorescence/visualizing detection. For the same tumor tissue slice, the nanoprobes peroxidase staining and fluorescent staining were obtained simultaneously, and the results were mutually complementary. Therefore, the fluorescence enzyme mimetic nanoprobes could provide a molecular colocalization diagnosis strategy, efficiently avoid false-positive and false-negative results, and further improve the accuracy and specificity of cancer diagnoses. By examining different clinical samples, we demonstrated that the nanoprobes could distinguish efficiently cancerous cells from normal cells, and exhibit a clinical potential for cancer diagnosis.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Lintao Cai
- Guangdong Key Laboratory of Nanomedicine, CAS Key Laboratory of Health Informatics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
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449
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Sharma B, Mandani S, Sarma TK. Enzymes as bionanoreactors: glucose oxidase for the synthesis of catalytic Au nanoparticles and Au nanoparticle–polyaniline nanocomposites. J Mater Chem B 2014; 2:4072-4079. [DOI: 10.1039/c4tb00218k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biogenic synthesis of Au nanoparticles and Au nanoparticle–polyaniline composite could be accomplished taking advantage of the reducing and catalytic activity of glucose oxidase.
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Affiliation(s)
- Bhagwati Sharma
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- IET Campus-DAVV
- Indore-452017, India
| | - Sonam Mandani
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- IET Campus-DAVV
- Indore-452017, India
| | - Tridib K. Sarma
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- IET Campus-DAVV
- Indore-452017, India
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450
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Solanki PR, Srivastava S, Ali MA, Srivastava RK, Srivastava A, Malhotra BD. Reduced graphene oxide–titania based platform for label-free biosensor. RSC Adv 2014. [DOI: 10.1039/c4ra09265a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A label-free biosensor has been fabricated using a reduced graphene oxide and anatase titania nanocomposite, deposited on indium tin oxide electrode for the specific recognition of Vibrio cholerae.
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Affiliation(s)
- Pratima R. Solanki
- Special Centre for Nano Sciences
- Jawaharlal Nehru University
- New Delhi-110067, India
- Department of Science and Technology Centre on Biomolecular Electronics
- Biomedical Instrumentation Section
| | - Saurabh Srivastava
- Department of Science and Technology Centre on Biomolecular Electronics
- Biomedical Instrumentation Section
- CSIR-National Physical Laboratory
- New Delhi 110012, India
- Department of Physics
| | - Md. Azahar Ali
- Department of Science and Technology Centre on Biomolecular Electronics
- Biomedical Instrumentation Section
- CSIR-National Physical Laboratory
- New Delhi 110012, India
| | - Rajesh Kr. Srivastava
- Department of Physics
- Banaras Hindu University
- Varanasi, India
- Department of Physics
- Indian Institute of Science
| | | | - B. D. Malhotra
- Department of Science and Technology Centre on Biomolecular Electronics
- Biomedical Instrumentation Section
- CSIR-National Physical Laboratory
- New Delhi 110012, India
- Department of Biotechnology
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