1
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Liu W, Li M, Zhang P, Jiang H, Liu W, Guan J, Sun Y, Liu X, Zeng Q. One-step growth of Cu-doped carbon dots in amino-modified carbon nanotube-modified electrodes for sensitive electrochemical detection of BPA. Mikrochim Acta 2024; 191:309. [PMID: 38714599 DOI: 10.1007/s00604-024-06344-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/02/2024] [Indexed: 05/10/2024]
Abstract
Copper-doped carbon dots and aminated carbon nanotubes (Cu-CDs/NH2-CNTs) nanocomposites were synthesized by a one-step growth method, and the composites were characterized for their performance. An electrochemical sensor for sensitive detection of bisphenol A (BPA) was developed for using Cu-CDs/NH2-CNTs nanocomposites modified with glassy carbon electrodes (GCE). The sensor exhibited an excellent electrochemical response to BPA in 0.2 M PBS (pH 7.0) under optimally selected conditions. The linear range of the sensor for BPA detection was 0.5-160 μM, and the detection limit (S/N = 3) was 0.13 μM. Moreover, the sensor has good interference immunity, stability and reproducibility. In addition, the feasibility of the practical application of the sensor was demonstrated by the detection of BPA in bottled drinking water and Liu Yang River water.
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Affiliation(s)
- Wei Liu
- School of Environment and Life Health, Anhui Vocational and Technical College, Hefei City, Anhui Province, 230011, People's Republic of China
| | - Muyi Li
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Pengli Zhang
- Yunnan First People's Hospital, Yunnan Province, Kunming, 650034, People's Republic of China
| | - Hongmei Jiang
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Wenjun Liu
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Jinyu Guan
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China
| | - Yanhua Sun
- School of Environment and Life Health, Anhui Vocational and Technical College, Hefei City, Anhui Province, 230011, People's Republic of China
| | - Xiaoying Liu
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha, Hunan Province, 410128, People's Republic of China.
| | - Qiongyao Zeng
- Yunnan University of Traditional Chinese Medicine, Yunnan Province, Kunming, 650500, People's Republic of China.
- Yunnan Provincial Hospital of Traditional Chinese Medicine, Kunming, Yunnan Province, 650500, People's Republic of China.
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2
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Yin JH, Liu M, Lan C, Chu B, Meng L, Xu N. Catechol oxidase nanozyme based colorimetric sensors array for highly selective distinction among multiple catecholamines. Anal Chim Acta 2023; 1279:341823. [PMID: 37827622 DOI: 10.1016/j.aca.2023.341823] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 10/14/2023]
Abstract
In order to effectively monitor multiple catecholamine (CA) neurotransmitters with extreme similar structures, a rapid, sensitive and selective detection strategy has become an urgent problem to be solved. In this paper, a novel colorimetric sensors array based on CuNCs protected by various ligands such as tannic acid, ascorbic acid and polymethylacrylic acid (CuNCs@TA, CuNCs@AA and CuNCs@PMAA) was constructed. All of these CuNCs could mimic catechol oxidase to selective catalyze catechol-type analogues (such as CAs) to corresponding quinones along with color changes. Furthermore, experiments and theory calculations demonstrated that Cr6+-modification on the surface of CuNCs facilitated the steady-state kinetics of enzymatic activity. Based on these CuNCs as sensing probes, this sensors array can quickly detect different CAs (such as epinephrine (EP), including dopamine (DA), norepinephrine (NE) and l-dopa) with similar structures. When those analogues were added to the CuNC-based colorimetric array sensors, different absorbance changes were produced at 485 nm. Linear discriminant analysis (LDA) showed that the tri-probe colorimetric array sensors could recognize and distinguish these analogues, and corresponding binary and ternary mixtures could be well categorized. The value of Factor 1 of an array with varied CA concentrations had a good linear correlation, and the detection limit (LOD) was as low as 10-8∼10-9 mol/L. Four CA analogues in real samples were identified by CuNCs-based colorimetric array sensors. This work provides a fast and convenient experimental basis for monitoring the complex structure CAs neurotransmitters.
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Affiliation(s)
- Jian-Hang Yin
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China
| | - Mengxuan Liu
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China
| | - Chengwu Lan
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China
| | - Baiquan Chu
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China
| | - Lei Meng
- College of Mechanical and Electrical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China
| | - Na Xu
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, China.
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3
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Zhuravlev VD, Ermakova LV, Khaliullin SM, Bamburov VG, Patrusheva TA, Porotnikova NM. Features of Copper(II) Oxide Synthesis in Combustion Reactions with Glycine and Citric Acid. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622060250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Lin S, Dong J, Zhang B, Yuan Z, Lu C, Han P, Xu J, Jia L, Wang L. Synthesis of bifunctional fluorescent nanohybrids of carbon dots-copper nanoclusters via a facile method for Fe 3+ and Tb 3+ ratiometric detection. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3577-3584. [PMID: 34291249 DOI: 10.1039/d1ay00762a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this work, a dual-emission ratiometric fluorescent probe of carbon dots-copper nanoclusters (CDs-Cu NCs) nanohybrids with bifunctional features was successfully assembled through mechanical mixing. The CDs were synthesized using ascorbic acid as a carbon source, and Cu NCs were prepared using d-penicillamine as the stabilizer and reducing agent. The as-prepared CDs-Cu NCs displayed two emission peaks (blue at 424 nm and red at 624 nm) when excited at 360 nm, and showed great stability. Interestingly, trace amount of Fe3+ could lead to the aggregation of Cu NCs, and induce a drastic static fluorescence quenching at 624 nm because of the electrostatic combination between them, while the fluorescence of the emission peak at 424 nm remained constant. Moreover, an attractive fluorescence enhancement phenomenon at 424 nm was observed when trace Tb3+ was added to the above system, which may due to the combination of fluorescence resonance energy transfer (FRET) and photo-induced electron transfer (PET) mechanisms. Thus, CDs-Cu NCs were applied for the ratiometric detection of Fe3+ and Tb3+ in aqueous solution, and the detection limit (3σ/slope) was 45 nM and 62 nM with the linear range from 0.01 to 40 μM and 0.1 to 50 μM, respectively. Furthermore, the developed sensor was successfully applied for the detection of Fe3+ and Tb3+ in real-water samples.
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Affiliation(s)
- Shumin Lin
- Analysis and Testing Center, Inner Mongolia University of Science and Technology, Baotou, 014010, PR China.
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5
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López‐Barriguete JE, Flores‐Rojas GG, López‐Saucedo F, Isoshima T, Bucio E. Improving thermo‐responsive hydrogel films by gamma rays and loading of Cu and Ag nanoparticles. J Appl Polym Sci 2021. [DOI: 10.1002/app.49841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jesús Eduardo López‐Barriguete
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Ciudad de México Mexico
- Nano Medical Engineering Laboratory RIKEN Wako Japan
| | - Guadalupe Gabriel Flores‐Rojas
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Ciudad de México Mexico
- Nano Medical Engineering Laboratory RIKEN Wako Japan
| | - Felipe López‐Saucedo
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Ciudad de México Mexico
| | | | - Emilio Bucio
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Ciudad de México Mexico
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6
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Pan MC, Lei YM, Chai YQ, Yuan R, Zhuo Y. In Situ Controllable Generation of Copper Nanoclusters Confined in a Poly-l-Cysteine Porous Film with Enhanced Electrochemiluminescence for Alkaline Phosphatase Detection. Anal Chem 2020; 92:13581-13587. [DOI: 10.1021/acs.analchem.0c03312] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mei-Chen Pan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yan-Mei Lei
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ya-Qin Chai
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ying Zhuo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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7
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Zeng J, Rino T, Bejtka K, Castellino M, Sacco A, Farkhondehfal MA, Chiodoni A, Drago F, Pirri CF. Coupled Copper-Zinc Catalysts for Electrochemical Reduction of Carbon Dioxide. CHEMSUSCHEM 2020; 13:4128-4139. [PMID: 32463150 DOI: 10.1002/cssc.202000971] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/12/2020] [Indexed: 05/21/2023]
Abstract
A catalyst plays a key role in the electrochemical reduction of CO2 to valuable chemicals and fuels. Hence, the development of efficient and inexpensive catalysts has attracted great interest from both the academic and industrial communities. In this work, low-cost catalysts coupling Cu and Zn are designed and prepared with a green microwave-assisted route. The Cu to Zn ratio in the catalysts can be easily tuned by adjusting the precursor solutions. The obtained Cu-Zn catalysts are mainly composed of polycrystalline Cu particles and monocrystalline ZnO nanoparticles. The electrodes with optimized Cu-Zn catalysts show enhanced CO production rates of approximately 200 μmol h-1 cm-2 with respect to those with a monometallic Cu or ZnO catalyst under the same applied potential. At the bimetallic electrodes, ZnO-derived active sites are selective for CO formation and highly conductive Cu favors electron transport in the catalyst layer as well as charge transfer at the electrode/electrolyte interface.
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Affiliation(s)
- Juqin Zeng
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
| | - Telemaco Rino
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129, Turin, Italy
| | - Katarzyna Bejtka
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
| | - Micaela Castellino
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129, Turin, Italy
| | - Adriano Sacco
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
| | - M Amin Farkhondehfal
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
| | - Angelica Chiodoni
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
| | - Filippo Drago
- NanoChemistry, Istituto Italiano di Tecnologia, via Morego 30, 16163, Genoa, Italy
| | - Candido F Pirri
- Center for Sustainable Future Technologies @POLITO, Istituto Italiano di Tecnologia, Via Livorno 60, 10144, Turin, Italy
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129, Turin, Italy
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8
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9
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Muthukumar P, Pannipara M, Al-Sehemi AG, Anthony SP. Highly enhanced bifunctional electrocatalytic activity of mixed copper–copper oxides on nickel foam via composition control. NEW J CHEM 2020. [DOI: 10.1039/d0nj02311f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fabricating Cu2O–CuO and CuO directly on the conducting nickel foam resulted in highly enhanced OER and HER electrocatalytic activity in an alkaline medium, respectively.
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Affiliation(s)
- Pandi Muthukumar
- Department of Chemistry
- School of Chemical & Biotechnology, SASTRA Deemed University
- Thanjavur-613401
- India
| | - Mehboobali Pannipara
- Department of Chemistry
- King Khalid University
- Abha 61413
- Saudi Arabia
- Research center for Advanced Materials Science
| | - Abdullah G. Al-Sehemi
- Department of Chemistry
- King Khalid University
- Abha 61413
- Saudi Arabia
- Research center for Advanced Materials Science
| | - Savarimuthu Philip Anthony
- Department of Chemistry
- School of Chemical & Biotechnology, SASTRA Deemed University
- Thanjavur-613401
- India
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10
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Yang C, Marian C, Liu J, Di Q, Xu M, Zhang Y, Han W, Liu K. Polymer Grafted Aluminum Nanoparticles for Percolative Composite Films with Enhanced Compatibility. Polymers (Basel) 2019; 11:polym11040638. [PMID: 30965676 PMCID: PMC6523902 DOI: 10.3390/polym11040638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/05/2019] [Accepted: 03/11/2019] [Indexed: 01/27/2023] Open
Abstract
Aluminum nanoparticles hold promise for highly energetic materials and sustainable surface plasmonic materials. Most of the commercial Al nanoparticles are prepared via a high-throughput electrical explosion of wires method (up to 200 g h−1). However, the use of Al nanoparticles produced by an electrical explosion of wires is limited by their micrometer-sized aggregations and poor stability. Here, we use polystyrene with –COOH end-group to graft onto isolated Al nanoparticles and dramatically enhance their colloidal stability in various organic solvents. We further demonstrate that the polystyrene grafted Al nanoparticles can be doped into polystyrene films with high compatibility, leading to enhanced dielectric properties, such as higher dielectric constant, lower dielectric loss, and stronger breakdown strength. Moreover, the composite film can improve the moisture resistance of embedded Al nanoparticles.
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Affiliation(s)
- Chenggong Yang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China.
| | - Chufarov Marian
- Jilin Supercapacitor Engineering Laboratory, College of Physics, Jilin University, Changchun 130012, China.
- International Center of Future Science, Jilin University, Changchun 130012, China.
| | - Jie Liu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China.
| | - Qi Di
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China.
| | - Mingze Xu
- International Joint Research Center for Nanophotonics and Biophotonics, School of Science, Changchun University of Science and Technology, Changchun 130022, China.
| | - Yunhe Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China.
| | - Wei Han
- Jilin Supercapacitor Engineering Laboratory, College of Physics, Jilin University, Changchun 130012, China.
- International Center of Future Science, Jilin University, Changchun 130012, China.
| | - Kun Liu
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China.
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11
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Kim S, Kim JM, Park JE, Nam JM. Nonnoble-Metal-Based Plasmonic Nanomaterials: Recent Advances and Future Perspectives. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704528. [PMID: 29572964 DOI: 10.1002/adma.201704528] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 11/17/2017] [Indexed: 06/08/2023]
Abstract
The application scope of plasmonic nanostructures is rapidly expanding to keep pace with the ongoing development of various scientific findings and emerging technologies. However, most plasmonic nanostructures heavily depend on rare, expensive, and extensively studied noble metals such as Au and Ag, with the limited choice of elements hindering their broad and practical applications in a wide spectral range. Therefore, abundant and inexpensive nonnoble metals have attracted attention as new plasmonic nanomaterial components, allowing these nonnoble-metal-based materials to be used in areas such as photocatalysis, sensing, nanoantennas, metamaterials, and magnetoplasmonics with new compositions, structures, and properties. Furthermore, the use of nonnoble metal hybrids results in newly emerging or synergistic properties not observed from single-metal component systems. Here, the synthetic strategies and recent advances in nonnoble-metal-based plasmonic nanostructures comprising Cu, Al, Mg, In, Ga, Pb, Ni, Co, Fe, and related hybrids are highlighted, and a discussion and perspectives in their synthesis, properties, applications, and challenges are presented.
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Affiliation(s)
- Sungi Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jae-Myoung Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jeong-Eun Park
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
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12
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Begletsova N, Selifonova E, Chumakov A, Al-Alwani A, Zakharevich A, Chernova R, Glukhovskoy E. Chemical synthesis of copper nanoparticles in aqueous solutions in the presence of anionic surfactant sodium dodecyl sulfate. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.05.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Santiago-Gonzalez B, Monguzzi A, Capitani C, Prato M, Santambrogio C, Meinardi F, Brovelli S. Bottom-up Synthesis and Self-Assembly of Copper Clusters into Permanent Excimer Supramolecular Nanostructures. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801806] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Beatriz Santiago-Gonzalez
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Angelo Monguzzi
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Chiara Capitani
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Mirko Prato
- Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
| | - Carlo Santambrogio
- Dipartimento di Biotecnologie e Bioscienze; Università degli Studi di Milano-Bicocca; Piazza della Scienza 2 20126 Milano Italy
| | - Francesco Meinardi
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Sergio Brovelli
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
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14
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Santiago-Gonzalez B, Monguzzi A, Capitani C, Prato M, Santambrogio C, Meinardi F, Brovelli S. Bottom-up Synthesis and Self-Assembly of Copper Clusters into Permanent Excimer Supramolecular Nanostructures. Angew Chem Int Ed Engl 2018; 57:7051-7055. [DOI: 10.1002/anie.201801806] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Beatriz Santiago-Gonzalez
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Angelo Monguzzi
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Chiara Capitani
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Mirko Prato
- Istituto Italiano di Tecnologia; Via Morego 30 16163 Genova Italy
| | - Carlo Santambrogio
- Dipartimento di Biotecnologie e Bioscienze; Università degli Studi di Milano-Bicocca; Piazza della Scienza 2 20126 Milano Italy
| | - Francesco Meinardi
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
| | - Sergio Brovelli
- Dipartimento di Scienza dei Materiali; Università degli Studi di Milano-Bicocca; via R. Cozzi 55 20125 Milano Italy
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15
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Chen Z, Liu C, Cao F, Ren J, Qu X. DNA metallization: principles, methods, structures, and applications. Chem Soc Rev 2018; 47:4017-4072. [DOI: 10.1039/c8cs00011e] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review summarizes the research activities on DNA metallization since the concept was first proposed in 1998, covering the principles, methods, structures, and applications.
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Affiliation(s)
- Zhaowei Chen
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Chaoqun Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Fangfang Cao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Science
- Changchun
- P. R. China
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16
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Muthukumar P, Kumar VV, Reddy GRK, Kumar PS, Anthony SP. Fabrication of strong bifunctional electrocatalytically active hybrid Cu–Cu2O nanoparticles in a carbon matrix. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02048a] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Earth-abundant copper-based hybrid Cu–Cu2ONPs@C in the carbon matrix exhibited enhanced OER and HER catalytic activity compared to pure Cu2O and CuNPs@C.
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Affiliation(s)
- Pandi Muthukumar
- Department of Chemistry
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur-613401
- India
| | - Vadivel Vinod Kumar
- Department of Chemistry
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur-613401
- India
| | | | - P. Suresh Kumar
- Department of Chemistry
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur-613401
- India
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17
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Abiraman T, Balasubramanian S. Synthesis and Characterization of Large-Scale (<2 nm) Chitosan-Decorated Copper Nanoparticles and Their Application in Antifouling Coating. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04692] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Vinod Kumar V, Rajmohan R, Vairaprakash P, Mariappan M, Anthony SP. Copper-coordination polymer-controlled Cu@N-rGO and CuO@C nanoparticle formation: reusable green catalyst for A3-coupling and nitroarene-reduction reactions. Dalton Trans 2017; 46:11704-11714. [DOI: 10.1039/c7dt02119d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu/CuO NPs were fabricated in N-rGO/carbon matrices using structural versatility of coordination polymers and utilized as reusable green catalyst.
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Affiliation(s)
| | - Rajamani Rajmohan
- School of Chemical & Biotechnology
- SASTRA University
- Thanjavur-613401
- India
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19
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Ye J, Dong X, Jiang H, Wang X. An intracellular temperature nanoprobe based on biosynthesized fluorescent copper nanoclusters. J Mater Chem B 2017; 5:691-696. [DOI: 10.1039/c6tb02751b] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We have established a facile, efficient and green strategy for the preparation of an intracellular temperature nanoprobe specifically by in situ biosynthesized fluorescent CuNCs.
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Affiliation(s)
- Jing Ye
- State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab)
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
| | - Xiawei Dong
- State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab)
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
| | - Hui Jiang
- State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab)
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
| | - Xuemei Wang
- State Key Laboratory of Bioelectronics (Chien-Shiung Wu Lab)
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- P. R. China
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20
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Zhang L, Song W, Liang RP, Qiu JD. Simultaneous Determination of Protein Kinase A and Casein Kinase II by Dual-Color Peptide Biomineralized Metal Nanoclusters. Anal Chem 2016; 88:11460-11467. [DOI: 10.1021/acs.analchem.6b02522] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Li Zhang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Wei Song
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Ru-Ping Liang
- College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Jian-Ding Qiu
- College of Chemistry, Nanchang University, Nanchang 330031, China
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21
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Devaraj M, Saravanan R, Deivasigamani R, Gupta VK, Gracia F, Jayadevan S. Fabrication of novel shape Cu and Cu/Cu2O nanoparticles modified electrode for the determination of dopamine and paracetamol. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.06.028] [Citation(s) in RCA: 288] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Long T, Guo Y, Lin M, Yuan M, Liu Z, Huang C. Optically active red-emitting Cu nanoclusters originating from complexation and redox reaction between copper(ii) and d/l-penicillamine. NANOSCALE 2016; 8:9764-9770. [PMID: 27118654 DOI: 10.1039/c6nr01492e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Despite a significant surge in the number of investigations into both optically active Au and Ag nanostructures, there is currently only limited knowledge about optically active Cu nanoclusters (CuNCs) and their potential applications. Here, we have succeeded in preparing a pair of optically active red-emitting CuNCs on the basis of complexation and redox reaction between copper(ii) and penicillamine (Pen) enantiomers, in which Pen serves as both a reducing agent and a stabilizing ligand. Significantly, the CuNCs feature unique aggregation induced emission (AIE) characteristics and therefore can serve as pH stimuli-responsive functional materials. Impressively, the ligand chirality plays a dramatic role for the creation of brightly emissive CuNCs, attributed to the conformation of racemic Pen being unfavorable for the electrostatic interaction, and thus suppressing the formation of cluster aggregates. In addition, the clusters display potential toward cytoplasmic staining and labelling due to the high photoluminescence (PL) quantum yields (QYs) and remarkable cellular uptake, in spite that no chirality-dependent effects in autophagy and subcellular localization are observed in the application of chiral cluster enantiomer-based cell imaging.
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Affiliation(s)
- Tengfei Long
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Yanjia Guo
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Min Lin
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Mengke Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Zhongde Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
| | - Chengzhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China.
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23
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Zarschler K, Rocks L, Licciardello N, Boselli L, Polo E, Garcia KP, De Cola L, Stephan H, Dawson KA. Ultrasmall inorganic nanoparticles: State-of-the-art and perspectives for biomedical applications. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:1663-701. [PMID: 27013135 DOI: 10.1016/j.nano.2016.02.019] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 02/08/2016] [Accepted: 02/15/2016] [Indexed: 12/31/2022]
Abstract
Ultrasmall nanoparticulate materials with core sizes in the 1-3nm range bridge the gap between single molecules and classical, larger-sized nanomaterials, not only in terms of spatial dimension, but also as regards physicochemical and pharmacokinetic properties. Due to these unique properties, ultrasmall nanoparticles appear to be promising materials for nanomedicinal applications. This review overviews the different synthetic methods of inorganic ultrasmall nanoparticles as well as their properties, characterization, surface modification and toxicity. We moreover summarize the current state of knowledge regarding pharmacokinetics, biodistribution and targeting of nanoscale materials. Aside from addressing the issue of biomolecular corona formation and elaborating on the interactions of ultrasmall nanoparticles with individual cells, we discuss the potential diagnostic, therapeutic and theranostic applications of ultrasmall nanoparticles in the emerging field of nanomedicine in the final part of this review.
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Affiliation(s)
- Kristof Zarschler
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden, Germany.
| | - Louise Rocks
- Centre For BioNano Interactions (CBNI), School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Nadia Licciardello
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden, Germany; Laboratoire de Chimie et des Biomatériaux Supramoléculaires, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, Strasbourg, France; Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT) Campus North, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
| | - Luca Boselli
- Centre For BioNano Interactions (CBNI), School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Ester Polo
- Centre For BioNano Interactions (CBNI), School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Karina Pombo Garcia
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden, Germany
| | - Luisa De Cola
- Laboratoire de Chimie et des Biomatériaux Supramoléculaires, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), 8 allée Gaspard Monge, Strasbourg, France; Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT) Campus North, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden, Germany
| | - Kenneth A Dawson
- Centre For BioNano Interactions (CBNI), School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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24
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Rao H, Ge H, Lu Z, Liu W, Chen Z, Zhang Z, Wang X, Zou P, Wang Y, He H, Zeng X. Copper nanoclusters as an on-off-on fluorescent probe for ascorbic acid. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1794-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Miao H, Zhong D, Zhou Z, Yang X. Papain-templated Cu nanoclusters: assaying and exhibiting dramatic antibacterial activity cooperating with H₂O₂. NANOSCALE 2015; 7:19066-72. [PMID: 26514845 DOI: 10.1039/c5nr05362e] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Herein, papain-functionalized Cu nanoclusters (CuNCs@Papain) were originally synthesized in aqueous solution together with a quantum yield of 14.3%, and showed obviously red fluorescence at 620 nm. Meanwhile, their corresponding fluorescence mechanism was fully elucidated by fluorescence spectroscopy, HR-TEM, FTIR spectroscopy, and XPS. Subsequently, the as-prepared CuNCs were employed as probes for detecting H2O2. Using CuNCs as probes, H2O2 was determined in the range from 1 μM to 50 μM based on a linear decrease of fluorescence intensity as well as a detection limit of 0.2 μM with a signal-to-noise ratio of 3. More significantly, it has been proved that CuNCs could convert H2O2 to ˙OH, which exhibited dramatic antibacterial activity. Both in vitro and in vivo experiments were performed to validate their antibacterial activity against Gram-positive/negative bacteria and actual wound infection, suggesting their potential for serving as one type of promising antibacterial material.
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Affiliation(s)
- Hong Miao
- College of Pharmaceutical Sciences, Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, Southwest University, Chongqing 400715, China.
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26
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Liu J, Zhang QM, Feng Y, Zhou Z, Shih K. Solvent-Switching Gelation and Orange-Red Emission of Ultrasmall Copper Nanoclusters. Chemphyschem 2015; 17:225-31. [DOI: 10.1002/cphc.201500969] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Jinhua Liu
- Innovation Center for Advanced Materials; Nanjing Tech University; Nanjing 211816 China
- Department of Civil Engineering; University of HongKong; Porkfulam Road HongKong China
| | - Qiang Matthew Zhang
- Department of Chemistry; University of Alberta; Edmonton Alberta T6G 2G2 Canada
| | - Yong Feng
- Department of Civil Engineering; University of HongKong; Porkfulam Road HongKong China
| | - Zhengyuan Zhou
- Department of Civil Engineering; University of HongKong; Porkfulam Road HongKong China
| | - Kaimin Shih
- Department of Civil Engineering; University of HongKong; Porkfulam Road HongKong China
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27
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Novel phenol biosensor based on laccase immobilized on reduced graphene oxide supported palladium–copper alloyed nanocages. Biosens Bioelectron 2015; 74:347-52. [DOI: 10.1016/j.bios.2015.06.060] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/15/2015] [Accepted: 06/25/2015] [Indexed: 01/05/2023]
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28
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Gowenlock CE, McGettrick JD, McNaughter PD, O’Brien P, Dunnill CW, Barron AR. Copper-complexed isonicotinic acid functionalized aluminum oxide nanoparticles. MAIN GROUP CHEMISTRY 2015. [DOI: 10.3233/mgc-150188] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Cathren E. Gowenlock
- Energy Safety Research Institute (ESRI), College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, Wales, UK
| | - James D. McGettrick
- SPECIFIC, College of Engineering, Swansea University, Baglan Bay Innovation & Knowledge Centre, Central Avenue, Baglan, Port Talbot, Wales, UK
| | - Paul D. McNaughter
- Department of Chemistry, Manchester University, Oxford Road, Manchester, UK
| | - Paul O’Brien
- Department of Chemistry, Manchester University, Oxford Road, Manchester, UK
| | - Charles W. Dunnill
- Energy Safety Research Institute (ESRI), College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, Wales, UK
| | - Andrew R. Barron
- Energy Safety Research Institute (ESRI), College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, Wales, UK
- Department of Chemistry, Rice University, Houston, TX, USA
- Department of Materials Science and Nanoengineering, Rice University, Houston, TX, USA
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29
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Hokita Y, Kanzaki M, Sugiyama T, Arakawa R, Kawasaki H. High-Concentration Synthesis of Sub-10-nm Copper Nanoparticles for Application to Conductive Nanoinks. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19382-9. [PMID: 26287811 DOI: 10.1021/acsami.5b05542] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A simple, high-concentration (up to 0.6 M Cu salt) synthesis of sub-10-nm copper nanoparticles (Cu NPs) was developed in ethylene glycol at room temperature under ambient air conditions using 1-amino-2-propanol (AmIP) as the stabilizer. Monodispersed AmIP-Cu NPs of 3.5 ± 1.0 nm were synthesized in a high yield of ∼90%. Thus, nearly 1 g of sub-10-nm Cu NP powder was obtained using a one-step synthesis for the first time. It is proposed that metallacyclic coordination stability of a five-membered ring type between the Cu and AmIP causes the high binding force of Am IP onto the Cu surface, resulting in the superior stability of the AmIP-Cu NPs in a solution. The purified powder of AmIP-Cu NPs can be redispersed in alcohol-based solvents up to high Cu contents of 45 wt % for the preparation of Cu nanoink. The resistivity of the conductive Cu film obtained from the Cu nanoink was 30 μΩ cm after thermal heating at 150 °C for 15 min under a nitrogen flow. The long-term resistance stability of the Cu film under an air atmosphere was also demonstrated.
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Affiliation(s)
- Yuki Hokita
- Faculty of Chemistry, Materials and Bioengineering, Kansai University , 3-3-35 Yamate-cho, Suita 564-8680, Japan
| | - Mai Kanzaki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University , 3-3-35 Yamate-cho, Suita 564-8680, Japan
| | - Tomonori Sugiyama
- Faculty of Chemistry, Materials and Bioengineering, Kansai University , 3-3-35 Yamate-cho, Suita 564-8680, Japan
| | - Ryuichi Arakawa
- Faculty of Chemistry, Materials and Bioengineering, Kansai University , 3-3-35 Yamate-cho, Suita 564-8680, Japan
| | - Hideya Kawasaki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University , 3-3-35 Yamate-cho, Suita 564-8680, Japan
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30
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Viswadevarayalu A, Venkata Ramana P, Sreenivasa Kumar G, Rathna sylvia L, Sumalatha J, Adinarayana Reddy S. Fine Ultrasmall Copper Nanoparticle (UCuNPs) Synthesis by Using Terminalia bellirica Fruit Extract and Its Antimicrobial Activity. J CLUST SCI 2015. [DOI: 10.1007/s10876-015-0917-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Li H, Chen Q, Zhao J, Urmila K. Enhancing the antimicrobial activity of natural extraction using the synthetic ultrasmall metal nanoparticles. Sci Rep 2015; 5:11033. [PMID: 26046938 PMCID: PMC4457014 DOI: 10.1038/srep11033] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 05/13/2015] [Indexed: 12/18/2022] Open
Abstract
The use of Catechin as an antibacterial agent is becoming ever-more common, whereas unstable and easy oxidation, have limited its application. A simple and low-energy-consuming approach to synthesize highly stable and dispersive Catechin-Cu nanoparticles(NPs) has been developed, in which the stability and dispersivity of the NPs are varied greatly with the pH value and temperature of the reaction. The results demonstrate that the optimal reaction conditions are pH 11 at room temperature. As-synthesized NPs display excellent antimicrobial activity, the survival rates of bacterial cells exposed to the NPs were evaluated using live/dead Bacterial Viability Kit. The results showed that NPs at the concentration of 10 ppm and 20 ppm provided rapid and effective killing of up to 90% and 85% of S. aureus and E. coli within 3 h, respectively. After treatment with 20 ppm and 40 ppm NPs, the bacteria are killed completely. Furthermore, on the basis of assessing the antibacterial effects by SEM, TEM, and AFM, it was found the cell membrane damage of the bacteria caused by direct contact of the bacteria with the NPs was the effective mechanism in the bacterial inactivation.
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Affiliation(s)
- Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Jiewen Zhao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Khulal Urmila
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
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32
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Cu-N Dopants Boost Electron Transfer and Photooxidation Reactions of Carbon Dots. Angew Chem Int Ed Engl 2015; 54:6540-4. [DOI: 10.1002/anie.201501912] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 11/07/2022]
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33
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Wu W, Zhan L, Fan W, Song J, Li X, Li Z, Wang R, Zhang J, Zheng J, Wu M, Zeng H. Cu-N Dopants Boost Electron Transfer and Photooxidation Reactions of Carbon Dots. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501912] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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He M, Lu L, Zhang J, Li D. Facile preparation of L-ascorbic acid-stabilized copper-chitosan nanocomposites with high stability and antimicrobial properties. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-014-0697-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Wen M, Liu P, Xiao S, Mori K, Kuwahara Y, Yamashita H, Li H, Zhang D. Uniform anatase single-crystal cubes with high thermal stability fully enclosed by active {010} and {001} facets. RSC Adv 2015. [DOI: 10.1039/c4ra16631k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Uniform cubic anatase TiO2 fully enclosed by high energy facets was prepared using green method for enhancing the photocatalytic activity.
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Affiliation(s)
- Meicheng Wen
- Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Department of Chemistry
- Shanghai Normal University
- Shanghai
- China
| | - Peijue Liu
- Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Department of Chemistry
- Shanghai Normal University
- Shanghai
- China
| | - Shuning Xiao
- Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Department of Chemistry
- Shanghai Normal University
- Shanghai
- China
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
| | - Hexing Li
- Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Department of Chemistry
- Shanghai Normal University
- Shanghai
- China
| | - Dieqing Zhang
- Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Department of Chemistry
- Shanghai Normal University
- Shanghai
- China
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36
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Ghosh S, Das R, Chowdhury IH, Bhanja P, Naskar MK. Rapid template-free synthesis of an air-stable hierarchical copper nanoassembly and its use as a reusable catalyst for 4-nitrophenol reduction. RSC Adv 2015. [DOI: 10.1039/c5ra16644f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A hierarchical copper nanoassembly was synthesized by solvothermal treatment at 150 °C for 2 h in the absence of any templating agents, and exhibited excellent air-stability, antioxidative properties and catalytic reduction of 4-nitrophenol.
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Affiliation(s)
- Sourav Ghosh
- Sol-Gel Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata 700 032
- India
| | - Rituparna Das
- Sol-Gel Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata 700 032
- India
| | | | - Piyali Bhanja
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Milan Kanti Naskar
- Sol-Gel Division
- CSIR-Central Glass and Ceramic Research Institute
- Kolkata 700 032
- India
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37
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Wang C, Shu S, Yao Y, Song Q. A fluorescent biosensor of lysozyme-stabilized copper nanoclusters for the selective detection of glucose. RSC Adv 2015. [DOI: 10.1039/c5ra19421k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Fluorescent copper nanoclusters (Lys-CuNCs) were synthesized using lysozyme as a template, displaying smart response to glucose concentration with high sensitivity. The visualization variation of Lys-CuNCs may further enable the rapid and simple detection of blood glucose.
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Affiliation(s)
- Chan Wang
- Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Shili Shu
- Department of Chemistry
- Tangshan Normal University
- Tangshan 063000
- China
| | - Yagang Yao
- Suzhou Institute of Nano-tech and Nano-bionics
- Chinese Academy of Sciences
- Suzhou 215123
- China
| | - Qijun Song
- Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical & Material Engineering
- Jiangnan University
- Wuxi 214122
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38
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Kumar A, Kang S, Larriba-Andaluz C, Ouyang H, Hogan CJ, Sankaran RM. Ligand-free Ni nanocluster formation at atmospheric pressure via rapid quenching in a microplasma process. NANOTECHNOLOGY 2014; 25:385601. [PMID: 25180756 DOI: 10.1088/0957-4484/25/38/385601] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The production of metal nanoclusters composed of less than 10(3) atoms is important for applications in energy conversion and medicine, and for fundamental studies of nanomaterial nucleation and growth. Unfortunately, existing synthesis methods do not enable adequate control of cluster formation, particularly at atmospheric pressure wherein formation typically occurs on sub-millisecond timescales. Here, we demonstrate that ligand-free, unagglomerated nickel nanoclusters can be continuously synthesized at atmospheric pressure via the decomposition of bis(cyclopentadienyl)nickel(II) (nickelocene) in a spatially-confined microplasma process that rapidly quenches particle growth and agglomeration. The clusters were measured on line by ion mobility spectrometry (IMS) and further analyzed by atomic force microscopy (AFM). Our results reveal that stable clusters with spherical equivalent mean diameters below 10 Åare produced, and by controlling the nickelocene concentration, the mean diameter can be tuned up to ∼50 Å. Although diameter is often the sole metric used in nanocluster and nanoparticle characterization, to infer the number of atoms in AFM and IMS detected clusters, we compare measured AFM heights and IMS inferred collision cross sections to theoretical predictions based on both bulk matter approximations and density functional theory and Hartree-Fock calculated Ni nanocluster structures (composed of 2-15 atoms for the latter). The calculations suggest that Ni nanoclusters composed of less than 10(2) atoms can be produced repeatably with simple microplasma reactors.
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Affiliation(s)
- Ajay Kumar
- Department of Chemical Engineering, Case Western Reserve University, USA
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39
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Cao H, Chen Z, Zheng H, Huang Y. Copper nanoclusters as a highly sensitive and selective fluorescence sensor for ferric ions in serum and living cells by imaging. Biosens Bioelectron 2014; 62:189-95. [PMID: 24999996 DOI: 10.1016/j.bios.2014.06.049] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/16/2014] [Accepted: 06/22/2014] [Indexed: 11/25/2022]
Abstract
A simple, one-step facile route for preparation of water soluble and fluorescent Cu nanoclusters (NCs) stabilized by tannic acid (TA) is described. The as-prepared TA capped Cu NCs (TA-Cu NCs) are characterized by UV-vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, luminescence, transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The TA-Cu NCs show luminescence properties having excitation and emission maxima at 360 nm and 430 nm, respectively, with a quantum yield of about 14%. The TA-Cu NCs are very stable even in 0.3 M NaCl, and their luminescent properties show pH independent. The fluorescence (FL) of Cu NCs is strongly quenched by Fe(3+) through an electron transfer mechanism, but not by other metal ions. Furthermore, the FL of the TA-Cu NCs shows no changes with the addition of Fe(2+) or H2O2 individually. On this basis, a facile chemosensor was developed for rapid, reliable, sensitive, and selective sensing of Fe(3+) ions with detection limit as low as 10 nM and a dynamic range from 10 nM to 10 μM. The proposed sensor was successfully used for the determination of iron contents in serum samples. Importantly, the Cu NCs-based FL probe showed long-term stability, good biocompatibility and very low cytotoxicity. It was successfully used for imaging ferric ions in living cells, suggesting the potential application of Cu NCs fluorescent probe in clinical analysis and cell imaging.
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Affiliation(s)
- Haiyan Cao
- The Key Laboratory of Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Zhaohui Chen
- Basic Department of Rongchang Campus, Southwest University, Chongqing 402460, China
| | - Huzhi Zheng
- The Key Laboratory of Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
| | - Yuming Huang
- The Key Laboratory of Luminescence and Real-Time Analysis, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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Wang B, Chen S, Nie J, Zhu X. Facile method for preparation of superfine copper nanoparticles with high concentration of copper chloride through photoreduction. RSC Adv 2014. [DOI: 10.1039/c4ra02870h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Through photoreduction, superfine copper nanoparticles were prepared form a high concentration of copper chloride at room temperature in the presence of the capping agent PEI.
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Affiliation(s)
- Bowen Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, P.R. China
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
| | - Shuxi Chen
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, P.R. China
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
| | - Jun Nie
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, P.R. China
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
| | - Xiaoqun Zhu
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029, P.R. China
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
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Yang CJ, Lu FH. Shape and size control of Cu nanoparticles by tailoring the surface morphologies of TiN-coated electrodes for biosensing applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:16025-16033. [PMID: 24320707 DOI: 10.1021/la403719c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A method for controlling the shapes and sizes of Cu nanoparticles during electrodeposition has been developed by tailoring the surface morphologies of TiN-coated electrodes. Larger octahedral Cu NPs grew on a granular TiN film; smaller, irregular Cu NPs formed on a pyramidal TiN film. The surface morphology of the TiN film affected the accumulation of Cu(2+) and hexadecyltrimethylammonium (CTA(+)) ions, leading to the different shapes and sizes of the resulting Cu NPs. The significant steric effect of the CTA(+) ions was confirmed when using the film of pyramidal TiN as the electrode in the CTAB-containing electrolyte; it contributed to the growth of the smaller, irregular Cu NPs. The sensitivity of the smaller, irregular Cu NPs in the detection of glucose was better than that of the larger, octahedral Cu NPs because of the former's greater increase in the Cu(2+)-to-Cu(0) ratio.
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Affiliation(s)
- Chia-Jung Yang
- Department of Materials Science and Engineering, National Chung Hsing University , Taichung 402, Taiwan
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Jia X, Li J, Wang E. Cu nanoclusters with aggregation induced emission enhancement. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:3873-3879. [PMID: 23670847 DOI: 10.1002/smll.201300896] [Citation(s) in RCA: 234] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Indexed: 05/27/2023]
Abstract
A facile and versatile method for preparing water-soluble, stable, luminescent Cu nanoclusters (NCs) via the process of size-focusing etching from nonluminescent nanocrystals is presented. Using glutathione as a model ligand, the smallest cluster, Cu2 , is selectively synthesized to form a nearly monodisperse product, eliminating the need for tedious size fractionation. Evolution of photoluminescence and absorption spectra reveal that the formation of stable cluster species occurs through surface etching. Intriguingly, the as-prepared CuNCs exhibit an aggregation-induced emission enhancement effect. The CuNCs emit a faint light when dispersed in aqueous solution, but generate a striking fluorescence intensity enhancement upon aggregation. Armed with these attractive properties, the emissive CuNCs are expected to open new opportunities for the construction of light-emitting diodes, chemosensors, and bioimaging systems.
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Affiliation(s)
- Xiaofang Jia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China; Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China
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Ramalingam B, Mukherjee S, Mathai CJ, Gangopadhyay K, Gangopadhyay S. Sub-2 nm size and density tunable platinum nanoparticles using room temperature tilted-target sputtering. NANOTECHNOLOGY 2013; 24:205602. [PMID: 23609435 DOI: 10.1088/0957-4484/24/20/205602] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This paper describes a tilted-target RF magnetron sputter deposition system to grow nanoparticles in a controlled way. With detailed characterization of ultra-high density (up to 1.1 × 10¹³ cm⁻²) and ultra-small size Pt nanoparticles (0.5-2 nm), it explains their growth and crystalline properties on amorphous Al₂O₃ thin films. It is shown that Pt nanoparticle size and number density can be precisely engineered by varying selected experimental parameters such as target angle, sputtering power and time of deposition to control the energy of the metal atoms in the deposition flux. Based on rate equation modelling of nanoparticle growth, three distinct growth regimes, namely nucleation dependent, coalescence dependent and agglomeration dependent regimes, were observed. The correlation between different nanoparticle growth regimes and the consequent crystal structure transformation, non-crystalline clusters → single crystalline nanoparticles → polycrystalline islands, is also discussed.
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Ghosh S, Naskar MK. A rapid one-pot synthesis of hierarchical hollow mesoporous CuO microspheres and their catalytic efficiency for the decomposition of H2O2. RSC Adv 2013. [DOI: 10.1039/c3ra41242c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Chen C, Fruk L. Functionalization of maleimide-coated silver nanoparticles through Diels–Alder cycloaddition. RSC Adv 2013. [DOI: 10.1039/c2ra22738j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ye Z, Tangeysh B, Wayland BB. Metal dication cross-linked polymer network colloids as an approach to form and stabilize unusually small metal nanoparticles. Chem Commun (Camb) 2013; 49:5372-4. [DOI: 10.1039/c3cc41778f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kharissova OV, Kharisov BI, Jiménez-Pérez VM, Muñoz Flores B, Ortiz Méndez U. Ultrasmall particles and nanocomposites: state of the art. RSC Adv 2013. [DOI: 10.1039/c3ra43418d] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Zhu X, Wang B, Shi F, Nie J. Direct, rapid, facile photochemical method for preparing copper nanoparticles and copper patterns. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:14461-14469. [PMID: 22974517 DOI: 10.1021/la303244p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We develop a facile method for preparing copper nanoparticles and patterned surfaces with copper stripes by ultraviolet (UV) irradiation of a mixture solution containing a photoinitiator and a copper-amine coordination compound. The copper-amine compound is formed by adding diethanol amine to an ethanol solution of copper chloride. Under UV irradiation, free radicals are generated by photoinitiator decomposition. Meanwhile, the copper-amine coordination compound is rapidly reduced to copper particles because the formation of the copper-amine coordination compound prevents the production of insoluble cuprous chloride. Poly(vinylpyrrolidone) is used as a capping agent to prevent the aggregation of the as-prepared copper nanoparticles. The capping agent increases the dispersion of copper nanoparticles in the ethanol solution and affects their size and morphology. Increasing the concentration of the copper-amine coordination compound to 0.1 M directly forms a patterned surface with copper stripes on the transparent substrate. This patterned surface is formed through the combination of the heterogeneous nucleation of copper nanoparticles and photolithography. We also investigate the mechanism of photoreduction by UV-vis spectroscopy and gas chromatography-mass spectrometry.
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Affiliation(s)
- Xiaoqun Zhu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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Díaz-Visurraga J, Daza C, Pozo C, Becerra A, von Plessing C, García A. Study on antibacterial alginate-stabilized copper nanoparticles by FT-IR and 2D-IR correlation spectroscopy. Int J Nanomedicine 2012; 7:3597-612. [PMID: 22848180 PMCID: PMC3405878 DOI: 10.2147/ijn.s32648] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The objective of this study was to clarify the intermolecular interaction between antibacterial copper nanoparticles (Cu NPs) and sodium alginate (NaAlg) by Fourier transform infrared spectroscopy (FT-IR) and to process the spectra applying two-dimensional infrared (2D-IR) correlation analysis. To our knowledge, the addition of NaAlg as a stabilizer of copper nanoparticles has not been previously reported. It is expected that the obtained results will provide valuable additional information on: (1) the influence of reducing agent ratio on the formation of copper nanoparticles in order to design functional nanomaterials with increased antibacterial activity, and (2) structural changes related to the incorporation of Cu NPs into the polymer matrix. METHODS Cu NPs were prepared by microwave heating using ascorbic acid as reducing agent and NaAlg as stabilizing agent. The characterization of synthesized Cu NPs by ultraviolet visible spectroscopy, transmission electron microscopy (TEM), electron diffraction analysis, X-ray diffraction (XRD), and semiquantitative analysis of the weight percentage composition indicated that the average particle sizes of Cu NPs are about 3-10 nm, they are spherical in shape, and consist of zerovalent Cu and Cu₂O. Also, crystallite size and relative particle size of stabilized Cu NPs were calculated by XRD using Scherrer's formula and FT from the X-ray diffraction data. Thermogravimetric analysis, differential thermal analysis, differential scanning calorimetry (DSC), FT-IR, second-derivative spectra, and 2D-IR correlation analysis were applied to studying the stabilization mechanism of Cu NPs by NaAlg molecules. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of stabilized Cu NPs against five bacterial strains (Staphylococccus aureus ATCC 6538P, Escherichia coli ATCC 25922 and O157: H7, and Salmonella enterica serovar Typhimurium ATCC 13311 and 14028) were evaluated with macrodilution, agar dilution plate count, and well-diffusion methods. RESULTS On the basis of the semiquantitative analysis, there was a direct correlation between the reducing agent ratio and the percentage of zerovalent Cu. This was confirmed with the statistical analysis of population of Cu NPs from TEM micrographs. At lower reducing agent ratios, two phases coexist (Cu₂O and zerovalent Cu) due to incomplete reduction of copper ions by the reducing agent; however, at higher reducing agent ratios, the Cu NPs consist mainly of zerovalent Cu. Crystallite size and relative particle size of stabilized Cu NPs showed considerable differences in results and tendencies in respect to TEM analysis. However, the relative particle size values obtained from FT of XRD data agreed well with the histograms from the TEM observations. From FT results, the relative particle size and reducing agent ratio of stabilized Cu NPs showed an inverse correlation. The incomplete reduction of copper ions at lower reducing agent ratios was also confirmed by DSC studies. FT-IR and 2D-IR correlation spectra analysis suggested the first event involved in the stabilization of Cu NPs is their electrostatic interaction with -C=O of carboxylate groups of NaAlg, followed by the interaction with the available O-C-O⁻, and finally with the -OH groups. Bacterial susceptibility to stabilized nanoparticles was found to vary depending on the bacterial strains. The lowest MIC and MBC of stabilized Cu NPs ranged between 2 mg/L and 8 mg/L for all studied strains. Disk-diffusion studies with both E. coli strains revealed greater effectiveness of the stabilized Cu NPs compared to the positive controls (cloxacillin, amoxicillin, and nitrofurantoin). S. aureus showed the highest sensitivity to stabilized Cu NPs compared to the other studied strains. CONCLUSION Cu NPs were successfully synthesized via chemical reduction assisted with microwave heating. Average particle size, polydispersity, and phase composition of Cu NPs depended mainly on the reducing agent ratio. Likewise, thermal stability and antibacterial activity of stabilized Cu NPs were affected by their phase composition. Because of the carboxylate groups in polymer chains, the structural changes of stabilized Cu NPs are different from those of NaAlg. NaAlg acted as a size controller and stabilizing agent of Cu NPs, due to their ability to bind strongly to the metal surface. Our study on the stabilizing agent-dependent structural changes of stabilized NPs is helpful for wide application of NaAlg as an important biopolymer.
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Affiliation(s)
- Judith Díaz-Visurraga
- Department of Pharmacy, Faculty of Pharmacy, University of Concepcion, Concepción, Chile.
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50
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Biswas S, Miller JT, Li Y, Nandakumar K, Kumar CSSR. Developing a millifluidic platform for the synthesis of ultrasmall nanoclusters: ultrasmall copper nanoclusters as a case study. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:687-698. [PMID: 22298499 DOI: 10.1002/smll.201102100] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/11/2011] [Indexed: 05/31/2023]
Abstract
The future of lab-on-a-chip devices for the synthesis of nanomaterials hinges on the successful development of high-throughput methods with better control over their size. While significant effort in this direction mainly focuses on developing "difficult to fabricate" complex microfluidic reactors, scant attention has been paid to the "easy to fabricate" and simple millifluidic systems that could provide the required control as well as high throughput. By utilizing numerical simulation of fluids within the millifluidic space at different flow rates, the results presented here show velocity profiles and residence time distributions similar to the case of microfluidics. By significantly reducing the residence time and residence time distribution, a continuous flow synthesis of ultrasmall copper nanoclusters (UCNCs) with exceptional colloidal stability is achieved. In-situ synchrotron-radiation-based X-ray absorption spectroscopy (XAS) reveal that the as-prepared clusters are about 1 nm, which is further supported by transmission electron microscopy and UV-vis spectroscopy studies. The clusters reported here are the smallest ever produced using a lab-on-a-chip platform. When supported on silica, they are found to efficiently catalyze C-H oxidation reactions, hitherto unknown to be catalyzed by Cu. This work suggests that a millifluidic platform can be an inexpensive, versatile, easy-to-use, and powerful tool for nanoparticle synthesis in general, and more specifically for ultrasmall nanoclusters (UNCs).
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Affiliation(s)
- Sanchita Biswas
- Center for Advanced Microstructures and Devices (CAMD), Louisiana State University, 6980 Jefferson Highway, Baton Rouge, LA 70816, USA
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