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Wang X, Liu Y, Li H, Lv T, Wan J, Dong K, Chen Z, Chen T. Regulating the Self-Discharge of Flexible All-Solid-State Supercapacitors by a Heterogeneous Polymer Electrolyte. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2102054. [PMID: 34245110 DOI: 10.1002/smll.202102054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/12/2021] [Indexed: 06/13/2023]
Abstract
Supercapacitors with high power density and an ultralong cyclic lifetime have been intensively investigated. However, the crucial challenge of their rapid self-discharge process is often neglected in most cases. A heterogeneous interface formed between two layers of polymer electrolytes is designed, in which a polyanion and a polycation are added into a common matrix of polymer electrolyte, respectively. By using the heterogeneous polymer electrolyte (HPE) as the separator simultaneously, the resultant supercapacitors exhibit comparable electrochemical performance to that of devices based on traditional polymer electrolytes. The HPE-based supercapacitors using both electric double-layer capacitive and pseudocapacitive electrodes show at least one time longer self-discharge time than that of devices based on homogenous polymer electrolyte, especially for the electrode in an electrolyte containing polyanion served as a positive pole during the charging process. Because of the same polymer matrix used, the heterojunction structure of the HPE exhibits excellent stability without obvious phase separation during thousands of charge/discharge and repeated bending cycles. This novel strategy by interface engineering of electrolyte to suppress the self-discharge behavior of supercapacitors is very meaningful to promote their practical applications.
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Affiliation(s)
- Xue Wang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Yanan Liu
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Huili Li
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Tian Lv
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Jun Wan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Keyi Dong
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Zilin Chen
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Tao Chen
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
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2
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Benyettou F, Ramdas Nair A, Dho Y, Prakasam T, Pasricha R, Whelan J, Traboulsi H, Mazher J, Sadler KC, Trabolsi A. Aqueous Synthesis of Triphenylphosphine‐Modified Gold Nanoparticles for Synergistic In Vitro and In Vivo Photothermal Chemotherapy. Chemistry 2020; 26:5270-5279. [DOI: 10.1002/chem.202000216] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Farah Benyettou
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Anjana Ramdas Nair
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Yaereen Dho
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Thirumurugan Prakasam
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Renu Pasricha
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Jamie Whelan
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Hassan Traboulsi
- Department of ChemistryKing Faisal University Al-Ahsa 31982 Kingdom of Saudi Arabia
| | - Javed Mazher
- Department of PhysicsKing Faisal University Al-Ahsa 31982 Kingdom of Saudi Arabia
| | - Kirsten C. Sadler
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
| | - Ali Trabolsi
- New York University Abu Dhabi PO Box 129188, Saadiyat Island Abu Dhabi United Arab Emirates
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3
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Shida N, Nishiyama H, Tomita I, Inagi S. Layer-by-layer Multilayered Film Formation on Gradient Polyelectrolyte Brush Prepared by Bipolar Electrochemistry. CHEM LETT 2019. [DOI: 10.1246/cl.190461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Naoki Shida
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Hiroki Nishiyama
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Ikuyoshi Tomita
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
| | - Shinsuke Inagi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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4
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Liu Y, Song SH, Yang YW, Chen Y. Cyclodextrin-Modified Gold Nanoparticle Aggregate formed by Simple host–Guest Interactions with 1,10-Phenanthroline. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823404323000567] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An aggregate of gold nanoparticles modified with thiolated β-cyclodextrin was fabricated through the linkage of PHEN and characterised by FT-IR, UV-vis, fluorescence and STM techniques, showing that the aggregate formation was a concentration-dependant behaviour.
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Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Shi-Hui Song
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Ying-Wei Yang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yong Chen
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
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5
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Functionalization of carbon nanomaterials for advanced polymer nanocomposites: A comparison study between CNT and graphene. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2016.12.010] [Citation(s) in RCA: 391] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Zhao J, Sun S, Swartz L, Riechers S, Hu P, Chen S, Zheng J, Liu GY. "Size-Independent" Single-Electron Tunneling. J Phys Chem Lett 2015; 6:4986-4990. [PMID: 26618859 PMCID: PMC4758347 DOI: 10.1021/acs.jpclett.5b02323] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Incorporating single-electron tunneling (SET) of metallic nanoparticles (NPs) into modern electronic devices offers great promise to enable new properties; however, it is technically very challenging due to the necessity to integrate ultrasmall (<10 nm) particles into the devices. The nanosize requirements are intrinsic for NPs to exhibit quantum or SET behaviors, for example, 10 nm or smaller, at room temperature. This work represents the first observation of SET that defies the well-known size restriction. Using polycrystalline Au NPs synthesized via our newly developed solid-state glycine matrices method, a Coulomb Blockade was observed for particles as large as tens of nanometers, and the blockade voltage exhibited little dependence on the size of the NPs. These observations are counterintuitive at first glance. Further investigations reveal that each observed SET arises from the ultrasmall single crystalline grain(s) within the polycrystal NP, which is (are) sufficiently isolated from the nearest neighbor grains. This work demonstrates the concept and feasibility to overcome orthodox spatial confinement requirements to achieve quantum effects.
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Affiliation(s)
- Jianli Zhao
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Shasha Sun
- Department of Chemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Logan Swartz
- Biophysics Graduate Group, University of California, Davis, California 95616, United States
| | - Shawn Riechers
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Peiguang Hu
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Jie Zheng
- Department of Chemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Gang-yu Liu
- Department of Chemistry, University of California, Davis, California 95616, United States
- Biophysics Graduate Group, University of California, Davis, California 95616, United States
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7
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Yu Y, Goodfellow BW, Rasch M, Bosoy C, Smilgies DM, Korgel BA. Role of Halides in the Ordered Structure Transitions of Heated Gold Nanocrystal Superlattices. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6924-32. [PMID: 26013597 PMCID: PMC4479963 DOI: 10.1021/acs.langmuir.5b01498] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Dodecanethiol-capped gold (Au) nanocrystal superlattices can undergo a surprisingly diverse series of ordered structure transitions when heated (Goodfellow, B. W.; Rasch, M. R.; Hessel, C. M.; Patel, R. N.; Smilgies, D.-M.; Korgel, B. A. Nano Lett. 2013, 13, 5710-5714). These are the result of highly uniform changes in nanocrystal size, which subsequently force a spontaneous rearrangement of superlattice structure. Here, we show that halide-containing surfactants play an essential role in these transitions. In the absence of any halide-containing surfactant, superlattices of dodecanethiol-capped (1.9-nm-diameter) Au nanocrystals do not change size until reaching about 190-205 °C, at which point the gold cores coalesce. In the presence of halide-containing surfactant, such as tetraoctylphosphonium bromide (TOPB) or tetraoctylammounium bromide (TOAB), the nanocrystals ripen at much lower temperature and superlattices undergo various ordered structure transitions upon heating. Chloride- and iodide-containing surfactants induce similar behavior, destabilizing the Au-thiol bond and reducing the thermal stability of the nanocrystals.
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Affiliation(s)
- Yixuan Yu
- McKetta
Department of Chemical Engineering, Texas Materials Institute and
Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, United States
| | - Brian W. Goodfellow
- McKetta
Department of Chemical Engineering, Texas Materials Institute and
Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, United States
| | - Michael
R. Rasch
- McKetta
Department of Chemical Engineering, Texas Materials Institute and
Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, United States
| | - Christian Bosoy
- McKetta
Department of Chemical Engineering, Texas Materials Institute and
Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, United States
| | - Detlef-M. Smilgies
- Cornell
High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, New York 14853, United States
| | - Brian A. Korgel
- McKetta
Department of Chemical Engineering, Texas Materials Institute and
Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712-1062, United States
- E-mail:
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8
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Rongé J, Bets J, Pattanaik S, Bosserez T, Borellini S, Pulinthanathu Sree S, Decher G, Martens JA. Tailoring preparation, structure and photocatalytic activity of layer-by-layer films for degradation of different target molecules. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.07.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Salehi A, Desai PS, Li J, Steele CA, Larson RG. Relationship between Polyelectrolyte Bulk Complexation and Kinetics of Their Layer-by-Layer Assembly. Macromolecules 2015. [DOI: 10.1021/ma502273a] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ali Salehi
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Priyanka S. Desai
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jingyi Li
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Caleb A. Steele
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ronald G. Larson
- Department of Chemical Engineering and ‡Department of Macromolecular Science & Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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10
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Bodappa N, Fluch U, Fu Y, Mayor M, Moreno-García P, Siegenthaler H, Wandlowski T. Controlled assembly and single electron charging of monolayer protected Au144 clusters: an electrochemistry and scanning tunneling spectroscopy study. NANOSCALE 2014; 6:15117-15126. [PMID: 25372883 DOI: 10.1039/c4nr03793f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Single gold particles may serve as room temperature single electron memory units because of their size dependent electronic level spacing. Here, we present a proof-of-concept study by electrochemically controlled scanning probe experiments performed on tailor-made Au particles of narrow dispersity. In particular, the charge transport characteristics through chemically synthesized hexane-1-thiol and 4-pyridylbenzene-1-thiol mixed monolayer protected Au(144) clusters (MPCs) by differential pulse voltammetry (DPV) and electrochemical scanning tunneling spectroscopy (EC-STS) are reported. The pyridyl groups exposed by the Au-MPCs enable their immobilization on Pt(111) substrates. By varying the humidity during their deposition, samples coated by stacks of compact monolayers of Au-MPCs or decorated with individual, laterally separated Au-MPCs are obtained. DPV experiments with stacked monolayers of Au(144)-MPCs and EC-STS experiments with laterally separated individual Au(144)-MPCs are performed both in aqueous and ionic liquid electrolytes. Lower capacitance values were observed for individual clusters compared to ensemble clusters. This trend remains the same irrespective of the composition of the electrolyte surrounding the Au(144)-MPC. However, the resolution of the energy level spacing of the single clusters is strongly affected by the proximity of neighboring particles.
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Affiliation(s)
- Nataraju Bodappa
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.
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11
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Tang Y, Cheng W. Nanoparticle-modified electrode with size- and shape-dependent electrocatalytic activities. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3125-3132. [PMID: 23379857 DOI: 10.1021/la304616k] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The size, shape, composition, and crystalline structures of noble metal nanoparticles are the key parameters in determining their electrocatalytic performance. Here, we report on a robust chemical-tethering approach to immobilizing gold nanoparticles onto transparent indium tin oxide (ITO) glass electrode surfaces to systematically investigate their size- and shape-dependent electrocatalysis toward a methanol oxidation reaction (MOR) and an oxygen reduction reaction (ORR). Monodisperse 20 nm nanospheres (NS20s), 45 nm nanospheres (NS45s), and 20 nm × 63 nm nanorods (NRs), which could be chemically tethered to ITO-surface-forming submonolayers without any aggregation, were synthesized. These nanoparticle-modified ITO electrodes exhibited strong electrocatalytic activities toward MOR and ORR, but their mass current densities were highly dependent on the particle sizes and shapes. For particles with similar shapes, the size determined the mass current densities: smaller particle sizes led to greater catalytic current densities per unit mass because of the greater surface-to-volume ratio (NS20s > NS45s). For particles with comparable sizes, the shape or crystalline structure governed the selectivity of the electrocatalytic reactions: NS45 exhibited a higher mass current density in MOR than did NRs because its dominant (111) facets were exposed, whereas NRs exhibited a higher mass current density in ORR because its dominant (100) facets were exposed.
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Affiliation(s)
- Yue Tang
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, VIC 3800, Australia
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12
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Lica GC, Tong YJ. Electrochemical impedance spectroscopic measurement of potential of zero charge of octanethiolate-protected Au and Pd nanoparticles. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2012.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Han L, Zhu C, Wang L, Dong S. Facile synthesis of chain-like CoCu bimetallic nanomaterials and their catalytic properties. Catal Sci Technol 2013. [DOI: 10.1039/c3cy20653j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Yousif AM. Synthesis of chemically modified macroreticular resins for the preparation of gold nanoparticles via sorption from aqueous gold solution, and the application of these nanoparticles in catalytic remediation. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-0033-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Yang H, Kwon Y, Kwon T, Lee H, Kim BJ. 'Click' preparation of CuPt nanorod-anchored graphene oxide as a catalyst in water. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:3161-3168. [PMID: 22821640 DOI: 10.1002/smll.201201002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Indexed: 06/01/2023]
Abstract
In this paper, a simple and powerful method of producing nanoparticle-anchored graphene oxide (GO) composites using a 'click' reaction is demonstrated. This method affords a facile means of anchoring of nanoparticles with various shapes and sizes on the GO. CuPt nanorods with controlled size, aspect ratio (from 1 to 11), and uniformity are synthesized. Transmission electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy measurements are made to monitor the formation and characterize the properties of the CuPt nanorod-grafted GO composites. Their catalytic properties in the water phase are investigated using an o-phenylenediamine oxidation reaction. The results of this study clearly demonstrate that nonpolar CuPt nanorods immobilized on GO can function as a catalyst in an aqueous solution and that GO can be used as a catalytic nanorod support.
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Affiliation(s)
- Hyunseung Yang
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Korea
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16
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Feng Z, Chapman WG. Revisited Block Copolymer/Nanoparticle Composites: Extension of Interfacial Statistical Associating Fluid Theory. Macromolecules 2012. [DOI: 10.1021/ma300197q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhengzheng Feng
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Walter G. Chapman
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
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17
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Araújo I, Zampa M, Moura J, dos Santos J, Eaton P, Zucolotto V, Veras L, de Paula R, Feitosa J, Leite J, Eiras C. Contribution of the cashew gum (Anacardium occidentale L.) for development of layer-by-layer films with potential application in nanobiomedical devices. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012; 32:1588-93. [DOI: 10.1016/j.msec.2012.04.048] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Revised: 03/01/2012] [Accepted: 04/22/2012] [Indexed: 11/16/2022]
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18
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Ma L, Cheng M, Jia G, Wang Y, An Q, Zeng X, Shen Z, Zhang Y, Shi F. Layer-by-layer self-assembly under high gravity field. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:9849-9856. [PMID: 22639916 DOI: 10.1021/la301553w] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In the present article, we have developed a facile and rapid method to fabricate a polyelectrolyte multilayer under high gravity field and investigated the difference of mass transfer in the diffusing process between LbL self-assembled technique under high gravity field (HG-LbL) and dipping assembly. Herein, we have employed polyethyleneimine and zinc oxide nanoparticles, which is a well-known UV blocking material with typical absorption properties in the range of 300-400 nm, as building blocks and applied hydrogen bonding as the driving force to construct the multilayer under HG-LbL and dipping assembly. The results show that, compared with dipping assembly, HG-LbL can highly improve the utilization and adsorption efficiency of building blocks by hastening the diffusing process, and meanwhile the resulting multilayer films still achieve comparable quality as those prepared from dipping assembly.
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Affiliation(s)
- Lanxin Ma
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 10029, China
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19
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Gonte RR, Balasubramanian K. Chemically modified polymer beads for sorption of gold from waste gold solution. JOURNAL OF HAZARDOUS MATERIALS 2012; 217-218:447-451. [PMID: 22472427 DOI: 10.1016/j.jhazmat.2012.03.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 03/05/2012] [Accepted: 03/06/2012] [Indexed: 05/31/2023]
Abstract
A simple method to convert gold from waste gold solutions used in chemical laboratories and chemical industries into metallic gold nano particles using styrene maleic acid copolymer beads has been approached. The styrene maleic acid copolymer beads with an average bead diameter 400-600 microns, exhibiting exceptionally high rough surface was used as a polymer matrix for the reducing gold from aqueous solution to metallic nano gold. Uptake of gold ions from aqueous waste gold solution was attempted in a batch process. Conversion of gold to metallic nano gold was achieved without the use of any external reducing agents. The metallic nano gold particles could be embedded into polymer matrix within 2h. The beads exhibited high temperature resistance and could sustain upto 400°C.
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Affiliation(s)
- Renuka R Gonte
- Department of Applied Chemistry, Defence Institute of Advanced Technology, Girinagar, Pune, India
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20
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Yagati AK, Lee T, Min J, Choi JW. Electrochemical performance of gold nanoparticle–cytochrome c hybrid interface for H2O2 detection. Colloids Surf B Biointerfaces 2012; 92:161-7. [DOI: 10.1016/j.colsurfb.2011.11.035] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 10/18/2011] [Accepted: 11/17/2011] [Indexed: 10/14/2022]
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21
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Shen J, Zhu Y, Zhou K, Yang X, Li C. Tailored anisotropic magnetic conductive film assembled from graphene-encapsulated multifunctional magnetic composite microspheres. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13216d] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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22
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Muglali MI, Liu J, Bashir A, Borissov D, Xu M, Wang Y, Wöll C, Rohwerder M. On the complexation kinetics for metallization of organic layers: palladium onto a pyridine-terminated araliphatic thiol film. Phys Chem Chem Phys 2012; 14:4703-12. [DOI: 10.1039/c2cp40072c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Luu QN, Doorn JM, Berry MT, Jiang C, Lin C, May PS. Preparation and optical properties of silver nanowires and silver-nanowire thin films. J Colloid Interface Sci 2011; 356:151-8. [DOI: 10.1016/j.jcis.2010.12.077] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 12/22/2010] [Accepted: 12/23/2010] [Indexed: 11/27/2022]
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24
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Kwon T, Min M, Lee H, Kim BJ. Facile preparation of water soluble CuPt nanorods with controlled aspect ratio and study on their catalytic properties in water. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11318f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Duan X, Park MH, Zhao Y, Berenschot E, Wang Z, Reinhoudt DN, Rotello VM, Huskens J. Metal nanoparticle wires formed by an integrated nanomolding-chemical assembly process: fabrication and properties. ACS NANO 2010; 4:7660-7666. [PMID: 21082767 DOI: 10.1021/nn102463r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report here the use of nanomolding in capillaries (NAMIC) coupled with dithiocarbamate (DTC) chemistry to fabricate sub-50 nm quasi-1D arrays of 3.5 nm core gold nanoparticles (Au NPs) over large areas. Owing to chemical immobilization via the DTC bond, the patterned NP systems are stable in water and organic solvents, thus allowing the surface modification of the patterned Au NP arrays through thiol chemistry and further orthogonal binding of proteins. The electrical properties of these patterned Au NP wires have also been studied. Our results show that NAMIC combined with surface chemistry is a simple but powerful tool to create metal NP arrays that can potentially be applied to fabricate nanoelectronic or biosensing devices.
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Affiliation(s)
- Xuexin Duan
- Molecular Nanofabrication Group, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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26
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Kiel M, Mitzscherling S, Leitenberger W, Santer S, Tiersch B, Sievers TK, Möhwald H, Bargheer M. Structural characterization of a spin-assisted colloid-polyelectrolyte assembly: stratified multilayer thin films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:18499-502. [PMID: 21053984 DOI: 10.1021/la103609f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The assembly of polyelectrolytes and gold nanoparticles yields stratified multilayers with very low roughness and high structural perfection. The films are prepared by spin-assisted layer-by-layer self-assembly (LbL) and are characterized by X-ray reflectivity (XRR), UV-vis spectroscopy, atomic force microscopy (AFM), and transmission electron microscopy (TEM). Typical structures have four repeat units, each of which consists of eight double layers (DL) of poly(sodium 4-styrenesulfonate)/poly(allylamine hydrochloride), one monolayer of gold nanoparticles (10 nm diameter), and another layer of poly(allylamine hydrochloride). XRR scans show small-angle Bragg peaks up to seventh order, evidencing the highly stratified structure. Pronounced Kiessig fringes indicate a low global roughness, which is confirmed by local AFM measurements. TEM images corroborate the layered structure in the growth direction and nicely show the distinct separation of the individual particle layers. An AFM study reveals the lateral gold particle distribution within one individual particle layer. Interestingly, the spin-assisted deposition of polyelectrolytes reduces the roughness induced by the particle layers, leading to self-healing of roughness defects and a rather perfect stratification.
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Affiliation(s)
- M Kiel
- Institute of Physics and Astronomy, University of Potsdam, Potsdam, Germany
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27
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Dinda E, Rashid MH, Biswas M, Mandal TK. Redox-active ionic-liquid-assisted one-step general method for preparing gold nanoparticle thin films: applications in refractive index sensing and catalysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17568-17580. [PMID: 20942449 DOI: 10.1021/la103084t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We describe a general one-step facile method for depositing gold nanoparticle (GNP) thin films onto any type of substrates by the in situ reduction of AuCl(3) using a newly designed redox-active ionic liquid (IL), tetrabutylphosphonium citrate ([TBP][Ci]). Various substrates such as positively charged glass, negatively charged glass/quartz, neutral hydrophobic glass, polypropylene, polystyrene, plain paper, and cellophane paper are successfully coated with a thin film of GNPs. This IL ([TBP][Ci]) is prepared by the simple neutralization of tetrabutylphosphonium hydroxide with citric acid. We also demonstrate that the [TBP][Ci] ionic liquid can be successfully used to generate GNPs in an aqueous colloidal suspension in situ. The deposited GNP thin films on various surfaces are made up of mostly discrete spherical GNPs that are well distributed throughout the film, as confirmed by field-emission scanning electron microscopy. However, it seems that some GNPs are arranged to form arrays depending on the nature of surface. We also characterize these GNP thin films via UV-vis spectroscopy and X-ray diffractometry. The as-formed GNP thin films show excellent stability toward solvent washing. We demonstrate that the thin film of GNPs on a glass/quartz surface can be successfully used as a refractive index (RI) sensor for different polar and nonpolar organic solvents. The as-formed GNP thin films on different surfaces show excellent catalytic activity in the borohydride reduction of p-nitrophenol.
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Affiliation(s)
- Enakshi Dinda
- Polymer Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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28
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Pavlopoulou E, Portale G, Christodoulakis KE, Vamvakaki M, Bras W, Anastasiadis SH. Following the Synthesis of Metal Nanoparticles within pH-Responsive Microgel Particles by SAXS. Macromolecules 2010. [DOI: 10.1021/ma101477s] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. Pavlopoulou
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, 711 10 Heraklion Crete, Greece
- Department of Materials Science and Technology, University of Crete, 710 03 Heraklion Crete, Greece
| | - G. Portale
- ESRF, DUBBLE CRG, Netherlands Organization for Scientific Research (NWO), F-38043 Grenoble, France
| | - K. E. Christodoulakis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, 711 10 Heraklion Crete, Greece
- Department of Materials Science and Technology, University of Crete, 710 03 Heraklion Crete, Greece
| | - M. Vamvakaki
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, 711 10 Heraklion Crete, Greece
- Department of Materials Science and Technology, University of Crete, 710 03 Heraklion Crete, Greece
| | - W. Bras
- ESRF, DUBBLE CRG, Netherlands Organization for Scientific Research (NWO), F-38043 Grenoble, France
| | - S. H. Anastasiadis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, 711 10 Heraklion Crete, Greece
- Department of Chemistry, University of Crete, 710 03 Heraklion Crete, Greece
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29
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Aulin C, Johansson E, Wågberg L, Lindström T. Self-organized films from cellulose I Nanofibrils using the layer-by-layer technique. Biomacromolecules 2010; 11:872-82. [PMID: 20196583 DOI: 10.1021/bm100075e] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The possibility of forming self-organized films using only charge-stabilized dispersions of cellulose I nanofibrils with opposite charges is presented, that is, the multilayers were composed solely of anionically and cationically modified microfibrillated cellulose (MFC) with a low degree of substitution. The build-up behavior and the properties of the layer-by-layer (LbL)-constructed films were studied using a quartz crystal microbalance with dissipation (QCM-D) and stagnation point adsorption reflectometry (SPAR). The adsorption behavior of cationic/anionic MFC was compared with that of polyethyleneimine (PEI)/anionic MFC. The water contents of five bilayers of cationic/anionic MFC and PEI/anionic MFC were approximately 70 and 50%, respectively. The MFC surface coverage was studied by atomic force microscopy (AFM) measurements, which clearly showed a more dense fibrillar structure in the five bilayer PEI/anionic MFC than in the five bilayer cationic/anionic MFC. The forces between the cellulose-based multilayers were examined using the AFM colloidal probe technique. The forces on approach were characterized by a combination of electrostatic and steric repulsion. The wet adhesive forces were very long-range and were characterized by multiple adhesive events. Surfaces covered by PEI/anionic MFC multilayers required more energy to be separated than surfaces covered by cationic/anionic MFC multilayers.
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Affiliation(s)
- Christian Aulin
- BIM Kemi AB, Box 3102, SE-443 03 Stenkullen, Sweden, Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, The Royal Institute of Technology, SE-100 44 Stockholm, Sweden, and Innventia AB, Box 5604, SE-114 86 Stockholm, Sweden.
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30
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Guzmán E, San Miguel V, Peinado C, Ortega F, Rubio RG. Polyelectrolyte multilayers containing triblock copolymers of different charge ratio. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:11494-11502. [PMID: 20446744 DOI: 10.1021/la101043z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Multilayers formed by the sodium salt of poly(4-styrenesulfonate), PSS, and triblock copolymers of the form PDMAEMA-PCL-PDMAEMA (PDMAEMA corresponding to poly[2-(N,N-dimethylamino)ethyl methacrylate), and PCL to poly(epsilon-caprolactone) have been built by layer-by-layer self-assembly from the aqueous polyelectrolyte solutions. Two types of block copolymers have been used which differ on the type of the amino groups, either hydrochloride or quaternized. This leads to changes in the charge density of the chains for the same content of amino groups. The growth of the multilayers has been followed using dissipative quartz crystal microbalance and ellipsometry techniques. The results show that, independently of the conditions used in the assembling, the film thickness grows linearly with the number of layers. The comparison of the thickness values obtained from D-QCM and ellipsometry has allowed us to calculate the water content of the polymer film. The analysis of the D-QCM data also provides the shear modulus, whose values are typical of a rubber-like polymer system. The analysis of the mass adsorbed calculated by the ellipsometric measurements indicated that the nature of the charge compensation mechanism is extrinsic for all the studied systems, although the degree of extrinsic compensation is strongly dependent on the copolymer used and the concentration in solution. Finally, it was found that the adsorption kinetic of the layers is bimodal for all the films built. Even though the characteristic adsorption times depend on the specific copolymer used, no dependence on the number of layers has been found for a given multilayer.
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Affiliation(s)
- Eduardo Guzmán
- Departamento de Química Física I, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
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31
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Attempts to immobilize catalytically active substituted-heteropolytungstates in multilayer film of charged polyelectrolyte poly(allylamine hydrochloride). J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2010.03.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Rui Q, Komori K, Tian Y, Liu H, Luo Y, Sakai Y. Electrochemical biosensor for the detection of H2O2 from living cancer cells based on ZnO nanosheets. Anal Chim Acta 2010; 670:57-62. [PMID: 20685417 DOI: 10.1016/j.aca.2010.04.065] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 10/09/2009] [Accepted: 04/30/2010] [Indexed: 10/19/2022]
Abstract
In this work, direct electron transfer of cytochrome c (cyt. c)--a model for studying the electron transfer of enzymes is achieved at hexagonal ZnO nanosheets by one-step electrodeposition. UV-vis spectra and electrochemical data demonstrate that such ZnO nanosheets can supply a bio-compatible surface to keep the bioactivity of cyt. c. The redox formal potential (E(0)') of cyt. c is estimated to be 338.2+/-4.3 mV (vs. AgAgCl) at the nanostructured ZnO surface. This value is much more positive than those of enzymes previously obtained at other metal oxides and zeolite surfaces. Experiment data show, under the optimized potential of 0.0 V (vs. AgAgCl), the electrochemical determination of H(2)O(2) is free from not only anodic interferences like ascorbic acid (AA) and dopamine (DA), but also a cathodic interference-O(2). Such an excellent selectivity enable the present H(2)O(2) biosensor determine the extracellular H(2)O(2) released from living human hepatoma cells.
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Affiliation(s)
- Qi Rui
- Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, PR China
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33
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Higashi N, Takagi T, Koga T. Layer-by-layer fabrication of well-packed gold nanoparticle assemblies guided by a β-sheet peptide network. Polym J 2010. [DOI: 10.1038/pj.2009.311] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Shem PM, Sardar R, Shumaker-Parry JS. One-step synthesis of phosphine-stabilized gold nanoparticles using the mild reducing agent 9-BBN. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13279-13283. [PMID: 19891468 DOI: 10.1021/la903003n] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A simple method to synthesize phosphine-stabilized gold nanoparticles (AuNPs) of narrow size dispersion using the mild reducing agent 9-borabicyclo[3.3.1]nonane (9-BBN) is described. The methodology produces particles 1.2-2.8 nm in size depending on the reaction conditions and the phosphine ligand used. The phosphine-stabilized AuNPs exhibit size dependent localized surface plasmon resonance (LSPR) behavior as measured by UV-visible spectroscopy. (31)P NMR spectroscopy analysis of triphenylphosphine-AuNPs (TPP-AuNPs) shows a peak shift to 63.0 ppm compared to pure TPP at -5.4 ppm which is attributed to adsorption of TPP on the AuNP surface. Synthesis of trioctylphosphine-stabilized AuNPs demonstrates the versatility of the 9-BBN-based method. We present initial investigations of using TPP-AuNPs as precursor materials for nanoparticles functionalized with other ligands through ligand exchange reactions with dodecanethiol (DDT) and 11-mercaptoundecanoic acid (MUA).
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Affiliation(s)
- Patrick M Shem
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah 84112, USA
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35
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Matharu Z, Pandey P, Pandey M, Gupta V, Malhotra B. Functionalized Gold Nanoparticles - Octadecylamine Hybrid Langmuir-Blodgett Film for Enzyme Sensor. ELECTROANAL 2009. [DOI: 10.1002/elan.200904578] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Jain V, Khiterer M, Montazami R, Yochum HM, Shea KJ, Heflin JR. High-contrast solid-state electrochromic devices of viologen-bridged polysilsesquioxane nanoparticles fabricated by layer-by-layer assembly. ACS APPLIED MATERIALS & INTERFACES 2009; 1:83-89. [PMID: 20355758 DOI: 10.1021/am8000264] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Water-soluble silsesquioxane nanoparticles (NPs) incorporating viologen groups (PXV; 1,1'-bis[3-(trimethoxysilyl)propyl]-4,4'-bipyridinium iodide) have been synthesized by sol-gel polymerization. The electrochromic properties of the bulk film fabricated by layer-by-layer (LbL) assembly have been examined, along with their incorporation into solid-state devices. The orange LbL films show high thermal stability and exhibit a maximum UV-vis absorption at 550 nm. Electrochromic switching of the NPs in liquid electrolyte as well as in the solid state was evaluated by a kinetic study via measurement of the change in transmission (% T) at the maximum contrast. Cyclic voltammograms of the PXV NP LbL films exhibit a reversible reduction at -0.6 V vs Ag/AgCl in a 0.1 M NaClO4(aq) solution, revealing good electrochromic stability, with a color change from orange to dark purple-blue at applied potentials ranging from -0.7 to -1.3 V. Cathodically coloring PXV NP solid-state devices exhibit a switching time of a few seconds between the purple-blue reduced state and the orange oxidized state, showing a contrast of 50% at 550 nm and a coloration efficiency of 205 cm2/C. Their solubility and fairly fast electrochromic switching ( approximately 3 s) at low switching voltages (between 0 and 3.0 V), along with their stability under atmospheric conditions, make PXV NPs good candidates for electrochromic displays.
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Affiliation(s)
- Vaibhav Jain
- Department of Macromolecular Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
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37
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Vitale F, Vitaliano R, Battocchio C, Fratoddi I, Giannini C, Piscopiello E, Guagliardi A, Cervellino A, Polzonetti G, Russo M, Tapfer L. Synthesis and Microstructural Investigations of Organometallic Pd(II) Thiol-Gold Nanoparticles Hybrids. NANOSCALE RESEARCH LETTERS 2008; 3:461-467. [PMID: 21350592 PMCID: PMC3023016 DOI: 10.1007/s11671-008-9181-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Accepted: 09/17/2008] [Indexed: 05/10/2023]
Abstract
In this work the synthesis and characterization of gold nanoparticles functionalized by a novel thiol-organometallic complex containing Pd(II) centers is presented. Pd(II) thiol, trans, trans-[dithiolate-dibis(tributylphosphine)dipalladium(II)-4,4'-diethynylbiphenyl] was synthesized and linked to Au nanoparticles by the chemical reduction of a metal salt precursor. The new hybrid made of organometallic Pd(II) thiol-gold nanoparticles, shows through a single S bridge a direct link between Pd(II) and Au nanoparticles. The size-control of the Au nanoparticles (diameter range 2-10 nm) was achieved by choosing the suitable AuCl(4) (-)/thiol molar ratio. The size, strain, shape, and crystalline structure of these functionalized nanoparticles were determined by a full-pattern X-ray powder diffraction analysis, high-resolution TEM, and X-ray photoelectron spectroscopy. Photoluminescence spectroscopy measurements of the hybrid system show emission peaks at 418 and 440 nm. The hybrid was exposed to gaseous NO(x) with the aim to evaluate the suitability for applications in sensor devices; XPS measurements permitted to ascertain and investigate the hybrid -gas interaction.
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Affiliation(s)
- Floriana Vitale
- Department of Advanced Physics Technology & New Materials (FIM), Brindisi Research Center, ENEA, S.S. Appia, km.713, Brindisi, 72100, Italy
- Department of Chemistry, University of Roma “La Sapienza”, P.le A.Moro, Roma, 5 - 00185, Italy
| | - Rosa Vitaliano
- Department of Chemistry, University of Roma “La Sapienza”, P.le A.Moro, Roma, 5 - 00185, Italy
| | - Chiara Battocchio
- Department of Physics, INSTM and CISDiC Unit, University “Roma Tre”, Via della Vasca Navale, Rome, 84 - 00146, Italy
| | - Ilaria Fratoddi
- Department of Chemistry, University of Roma “La Sapienza”, P.le A.Moro, Roma, 5 - 00185, Italy
| | - Cinzia Giannini
- Institute of Crystallography, CNR, via Amendola 122/O, Bari, 70126, Italy
| | - Emanuela Piscopiello
- Department of Advanced Physics Technology & New Materials (FIM), Brindisi Research Center, ENEA, S.S. Appia, km.713, Brindisi, 72100, Italy
| | | | - Antonio Cervellino
- Laboratory for Neutron Scattering, ETH Zurich and PSI Villigen, Villigen PSI, CH-5232, Switzerland
| | - Giovanni Polzonetti
- Department of Physics, INSTM and CISDiC Unit, University “Roma Tre”, Via della Vasca Navale, Rome, 84 - 00146, Italy
| | - MariaVittoria Russo
- Department of Chemistry, University of Roma “La Sapienza”, P.le A.Moro, Roma, 5 - 00185, Italy
| | - Leander Tapfer
- Department of Advanced Physics Technology & New Materials (FIM), Brindisi Research Center, ENEA, S.S. Appia, km.713, Brindisi, 72100, Italy
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38
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Mitri FG, Fellah ZEA. The mechanism of the attracting acoustic radiation force on a polymer-coated gold sphere in plane progressive waves. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2008; 26:337-343. [PMID: 19230208 DOI: 10.1140/epje/i2007-10337-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Acoustic plane progressive waves incident on a sphere immersed in a nonviscous fluid exert a steady force acting along the direction of wave motion. It is shown here that when an elastic gold sphere is coated with a polymer-type (polyethylene) viscoelastic layer, this force becomes a force of attraction in the long wavelength limit. Kinetic, potential and Reynolds stress energy densities are defined and evaluated with and in the absence of absorption in the layer. Without absorption, the mechanical energy density counteracts the Reynolds stress energy density, which causes a repulsive force. However, in the case of absorption, the attractive force is predicted to be a physical consequence of a mutual contribution of both the mechanical and the Reynolds stress energy densities. This condition provides an impetus for further designing acoustic tweezers operating with plane progressive waves as well as fabricating polymer-coated gold particles for specific biophysical and biomedical applications.
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Affiliation(s)
- F G Mitri
- Mayo Clinic College of Medicine, Department of Physiology and Biomedical Engineering, Ultrasound Research Laboratory, 200 First Street SW, Rochester, MN 55905, USA.
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39
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Park S, Wang JY, Kim B, Russell TP. From nanorings to nanodots by patterning with block copolymers. NANO LETTERS 2008; 8:1667-1672. [PMID: 18444690 DOI: 10.1021/nl0805110] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrate three different transfer patterns that can be achieved by use of a surface reconstructed block copolymer film where metal is evaporated onto the surface of the film, providing the contrast. Thin films of diblock copolymers having cylindrical microdomains oriented normal to the surface with long-range lateral order were used. Solvent reconstruction of the film, followed by a glancing angle metal evaporation and thermal annealing, led to three different decorations of the films with gold. These films were used as masks for pattern transfer of pores, columns, and rings to underlying substrate with high fidelity.
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Affiliation(s)
- Soojin Park
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003, USA
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40
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Feng CL, Zhong XH, Steinhart M, Caminade AM, Majoral JP, Knoll W. Functional quantum-dot/dendrimer nanotubes for sensitive detection of DNA hybridization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:566-571. [PMID: 18384038 DOI: 10.1002/smll.200700453] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Chuan Liang Feng
- Max Planck Institute for Polymer Research Ackermannweg 10, 55128 Mainz, Germany
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41
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Nakato T, Sugawara J. Colloidal State of Exfoliated Oxide Nanosheets of Layered Niobate Characterized with a Molecular-Level Spectroscopic Technique and Macroscopic Observations. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.2451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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42
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Wang X, Zuo J, Keil P, Grundmeier G. Comparing the growth of PVD silver nanoparticles on ultra thin fluorocarbon plasma polymer films and self-assembled fluoroalkyl silane monolayers. NANOTECHNOLOGY 2007; 18:265303. [PMID: 21730397 DOI: 10.1088/0957-4484/18/26/265303] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Adsorbed silver nanoparticles were prepared by means of electron beam evaporation of silver on ultra thin Si-supported heptadecafluoro-1-decene plasma polymer films and self-assembled heptadecafluorodecyl-trimethoxysilane monolayers. The morphology of the silver nanoparticles, characterized by their size, size distribution, shape and interparticle separation, was observed to depend on the type, chemical composition and surface energy of the sub-layer as well as the amount of silver deposited. Field emission-scanning electron microscopy was used to study the change in the morphology of the silver nanoparticles as a function of the preparation parameters. The silver nanoparticles on the ultra thin plasma polymer films demonstrated a much smaller and narrower size distribution due to the cross-linking within the film, which more effectively hinders the penetration of silver through the film in comparison to the self-assembled monolayers. Moreover, the optical properties of the resulting silver nanoparticles on the ultra thin fluorocarbon plasma polymers and their correlation to size and size distribution were investigated by spectroscopic ellipsometry in the wavelength range between 300 and 800 nm.
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Affiliation(s)
- Xuemei Wang
- Max-Planck-Institut fuer Eisenforschung GmbH, Max-Planck-Straße 1, D-40237 Dusseldorf, Germany
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43
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Russell LE, Galyean AA, Notte SM, Leopold MC. Stable aqueous nanoparticle film assemblies with covalent and charged polymer linking networks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:7466-71. [PMID: 17559246 DOI: 10.1021/la7006414] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The construction of highly stable and efficiently assembled multilayer films of purely water soluble gold nanoparticles is reported. Citrate-stabilized nanoparticles (CS-NPs) of average core diameter of 10 nm are used as templates for stabilization-based exchange reactions with thioctic acid to form more robust aqueous NPs that can be assembled into multilayer films. The thioctic acid stabilized nanoparticles (TAS-NPs) are networked via covalent and electrostatic linking systems, employing dithiols and the cationic polymer poly(L-lysine), respectively. Multilayer films of up to 150 nm in thickness are successfully grown at biological pH with no observable degradation of the NPs within the film. The characteristic surface plasmon band, an optical feature of certain NP film assemblies that can be used to report the local environment and core spacing within the film, is preserved. Growth dynamics and film stability in solution and in the air are examined, with poly(L-lysine) linked films showing no evidence of aggregation for at least 50 days. We believe these films represent a pivotal step toward exploring the potential of aqueous NP film assemblies as a sensing apparatus.
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Affiliation(s)
- Lesley E Russell
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond, Virginia 23173, USA
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44
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Liu L, Jin X, Yang S, Chen Z, Lin X. A highly sensitive biosensor with (Con A/HRP)n multilayer films based on layer-by-layer technique for the detection of reduced thiols. Biosens Bioelectron 2007; 22:3210-6. [PMID: 17408946 DOI: 10.1016/j.bios.2007.02.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 01/17/2007] [Accepted: 02/23/2007] [Indexed: 11/28/2022]
Abstract
The bilayer of Con A/HRP through the biospecific affinity of concanavalin A (Con A) and glycoprotein horseradish peroxidase (HRP) was prepared on the surface of an Au electrode modified by the precursor film consisted of poly(allylamine hydrochloride) poly(sodium-p-styrene-sulfonate). Atomic force microscopy and electrochemical impedance spectroscopy were adopted to monitor the uniform layer-by-layer assembly of the Con A/HRP bilayers. The amperometric measurement was based on the inhibition of reduced thiols and performed in the presence of the electron mediator hydroquinone in 0.2M phosphate buffer of pH 6.5 at an applied potential of -0.15 V versus Ag/AgCl. Under the optimal conditions, the biosensor presented a linear response for cysteine from 0.1 to 23.5 microM, with a detection limit of 0.02 microM. The biosensor demonstrated high stability and repeatability. A series of reduced thiols were detected by this inhibition biosensor and oxidized thiols showed no effect on the current response of the biosensor.
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Affiliation(s)
- Lijun Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China
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Shen G, Wang H, Shen G, Yu R. Au nanoparticle network-type thin films formed via mixed assembling and cross-linking route for biosensor application: Quartz crystal microbalance study. Anal Biochem 2007; 365:1-6. [PMID: 17434135 DOI: 10.1016/j.ab.2006.11.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Revised: 09/23/2006] [Accepted: 11/29/2006] [Indexed: 10/23/2022]
Abstract
We have investigated a means of producing Au nanoparticle network-type thin films that are derived by a one-step mixed-assembly cross-linking route, can avoid nonspecific interactions, and provide maximum binding to a specific target. Although a stepwise layer-by-layer construction method exists, our goal is to seek an alternative and simpler pathway for preparing thin films such as electrode nanomaterials. The model system consisting of Au nanoparticles, 1,6-hexananedithiol (HDT) cross-linkers, and 3-mercaptopropionic acid (MPA) captures was studied. The mixing of these three components in solutions allowed sequential assembly, cross-linking, and eventual precipitation of the network-type thin films on a Au substrate. Characterization of the films was carried out using UV-visible spectroscopy, cyclic voltammetry, and a quartz crystal microbalance. Such a thin film can be useful in biosensing and surface-coating applications. By controlling the ratio of HDT and MPA, we made Au nanoparticle network-type thin films on which goat-anti-human IgG antibodies that were immobilized can bind specifically to IgG with negligible nonspecific binding.
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Affiliation(s)
- Guangyu Shen
- State Key Laboratory of Chem/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, People's Republic of China.
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Spectroelectrochemical phenomena on surface plasmon resonance of Au nanoparticles immobilized on transparent electrode. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2007.03.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Jena BK, Raj CR. Electrochemical biosensor based on integrated assembly of dehydrogenase enzymes and gold nanoparticles. Anal Chem 2007; 78:6332-9. [PMID: 16970306 DOI: 10.1021/ac052143f] [Citation(s) in RCA: 204] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Development of a highly sensitive nanostructured electrochemical biosensor based on the integrated assembly of dehydrogenase enzymes and gold (Au) nanoparticle is described. The Au nanoparticles (AuNPs) have been self-assembled on a thiol-terminated, sol-gel-derived, 3-D, silicate network and enlarged by hydroxylamine seeding. The AuNPs on the silicate network efficiently catalyze the oxidation of NADH with a decrease in overpotential of approximately 915 mV in the absence of any redox mediator. The surface oxides of AuNP function as an excellent mediator, and a special inverted "V" shape voltammogram at less positive potential was observed for the oxidation of NADH. The AuNP self-assembled sol-gel network behaves like a nanoelectrode ensemble. The nanostructured electrode shows high sensitivity (0.056 +/- 0.001 nA/nM) toward NADH with an amperometric detection limit of 5 nM. The electrode displays excellent operational and storage stability. A novel methodology for the fabrication of a NADH-dependent dehydrogenase biosensor based on the integration of dehydrogenase enzyme and AuNPs with the silicate network is developed. The enzymatically generated NADH is, in turn, electrocatalytically detected by the AuNPs on the silicate network. The integrated assembly has been successfully used for the amperometric biosensing of lactate and ethanol at a potential of -5 mV. The biosensor is very stable and highly sensitive, and it has a fast response time. The excellent performance validates the integrated assembly as an attractive sensing element for the development of new dehydrogenase biosensors.
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Affiliation(s)
- Bikash Kumar Jena
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721 302, India
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Du J, Lv G, Hu C, Wu H. Layer-by-Layer Assembly of Silicotungstate Multilayer Films Modified on Glassy Carbon Electrode and Their Electrochemical Behaviors. ACTA ACUST UNITED AC 2007; 97:313-20. [PMID: 17696010 DOI: 10.1002/adic.200790017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A new electrode was modified by multilayer films composed of heteropolyanion (SiW12) and cationic polymer poly(diallyldimethylammonium chloride) through electrochemical growth. The modified electrode electrochemical behavior, the effect of solution pH and electrocatalytic response to the reduction of BrO3- and NO2- have been investigated. The result shows that the electrochemical process of multilayer films modified electrode including SiW12 is a reversible process by electrochemical step. One-electron process has no proton participation in the first step, and one-electron process is accompanied by one proton participation in the second step and two-electron process is accompanied by two protons participation in the third step. The films grow uniformly, and the peak currents increase with increasing layer numbers. The peak currents increase with scan rate, and the reduced potentials of multilayer films shift negatively with increasing pH. The electrochemical mechanism of multilayer films was suggested.
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Affiliation(s)
- Jinyan Du
- School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China.
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Li Y, Zhou J, Zhang K, Sun C. Gold nanoparticle multilayer films based on surfactant films as a template: Preparation, characterization, and application. J Chem Phys 2007; 126:094706. [PMID: 17362117 DOI: 10.1063/1.2710265] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Highly ordered gold nanoparticle multilayer films were achieved conveniently using didodecyldimethylammonium bromide (DDAB) films as a template. The template was produced by casting DDAB chloroform solution onto the surface of a (3-aminopropyl)trimethoxysilane-modified indium tin oxide substrate and then evaporating the organic solvent. Gold nanoparticle multilayer films were prepared by soaking the template in 2.6 nm colloidal gold solution for 120 min. The well-ordered superlattice structure of the DDAB template and the gold nanoparticle multilayer films was identified by x-ray diffraction. The characterizations of the gold nanoparticle multilayer films by UV-vis spectroscopy, atomic force microscopy, and cyclic voltammerty were described in detail. The application of the as-prepared gold nanoparticle multilayer films in surface-enhanced Raman spectroscopy (SERS) was investigated by using Rhodamine 6G as a probe molecule. It was found that the colloidal gold nanoparticle multilayer films exhibit remarkable enhancement ability and can be used as SERS substrates.
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Affiliation(s)
- Yancai Li
- College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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