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Kawawaki T, Negishi Y. Elucidation of the electronic structures of thiolate-protected gold nanoclusters by electrochemical measurements. Dalton Trans 2023; 52:15152-15167. [PMID: 37712891 DOI: 10.1039/d3dt02005c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Metal nanoclusters (NCs) with sizes of approximately 2 nm or less have different physical/chemical properties from those of the bulk metals owing to quantum size effects. Metal NCs, which can be size-controlled and heterometal doped at atomic accuracy, are expected to be the next generation of important materials, and new metal NCs are reported regularly. However, compared with conventional materials such as metal complexes and relatively large metal nanoparticles (>2 nm), these metal NCs are still underdeveloped in terms of evaluation and establishment of application methods. Electrochemical measurements are one of the most widely used methods for synthesis, application, and characterisation of metal NCs. This review summarizes the basic knowledge of the electrochemistry and experimental techniques, and provides examples of the reported electronic states of thiolate-protected gold NCs elucidated by electrochemical approaches. It is expected that this review will provide useful information for researchers starting to study metal NCs.
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Affiliation(s)
- Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
- Research Institute for Science & Technology, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
- Research Institute for Science & Technology, Tokyo University of Science, Shinjuku-ku, Tokyo 162-8601, Japan
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2
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Lobo K, Gangaiah VK, Alex C, John NS, Ramakrishna Matte HSS. Spontaneous Decoration of Ultrasmall Pt Nanoparticles on Size-Separated MoS 2 Nanosheets. Chemistry 2023; 29:e202301596. [PMID: 37497808 DOI: 10.1002/chem.202301596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/23/2023] [Accepted: 07/23/2023] [Indexed: 07/28/2023]
Abstract
Liquid exfoliation can be considered as a viable approach for the scalable production of 2D materials due to its various benefits, although the polydispersity in the obtained nanosheet size hinders their straightforward incorporation. Size-separation can help alleviate these concerns, however a correlation between nanosheet size and property needs to be established to bring about size-specific applicability. Herein, size-selected aqueous nanosheet dispersions have been obtained via centrifugation-based protocols, and their chemical activity in the spontaneous reduction of chloroplatinic acid is investigated. Growth of ultrasmall Pt nanoparticles was achieved on nanosheet surfaces without a need for reducing agents, and stark differences in the nanoparticle coverage were observed as a function of nanosheet size. Defects in the nanosheets were probed via Raman spectroscopy, and correlated to the observed size-activity. Additionally, the effect of reaction temperature during synthesis was investigated. The electrochemical activity of the ultrasmall Pt nanoparticle decorated MoS2 nanosheets was evaluated for the hydrogen evolution reaction, and enhancement in performance was observed with nanosheet size, and nanoparticle decoration density. These findings shine light on the significance of nanosheet size in controlling spontaneous reduction reactions, and provide a deeper insight to intrinsic properties of liquid exfoliated nanosheets.
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Affiliation(s)
- Kenneth Lobo
- Energy Materials Laboratory, Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Vijaya Kumar Gangaiah
- Energy Materials Laboratory, Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - Chandraraj Alex
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - Neena S John
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - H S S Ramakrishna Matte
- Energy Materials Laboratory, Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
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3
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Li Q, Wang Y, Zhang G, Su R, Qi W. Biomimetic mineralization based on self-assembling peptides. Chem Soc Rev 2023; 52:1549-1590. [PMID: 36602188 DOI: 10.1039/d2cs00725h] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Biomimetic science has attracted great interest in the fields of chemistry, biology, materials science, and energy. Biomimetic mineralization is the process of synthesizing inorganic minerals under the control of organic molecules or biomolecules under mild conditions. Peptides are the motifs that constitute proteins, and can self-assemble into various hierarchical structures and show a high affinity for inorganic substances. Therefore, peptides can be used as building blocks for the synthesis of functional biomimetic materials. With the participation of peptides, the morphology, size, and composition of mineralized materials can be controlled precisely. Peptides not only provide well-defined templates for the nucleation and growth of inorganic nanomaterials but also have the potential to confer inorganic nanomaterials with high catalytic efficiency, selectivity, and biotherapeutic functions. In this review, we systematically summarize research progress in the formation mechanism, nanostructural manipulation, and applications of peptide-templated mineralized materials. These can further inspire researchers to design structurally complex and functionalized biomimetic materials with great promising applications.
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Affiliation(s)
- Qing Li
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
| | - Yuefei Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China. .,Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Gong Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China. .,State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou 215123, P. R. China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China. .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China.,Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China. .,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China.,Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P. R. China
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4
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Adnan RH, Madridejos JML, Alotabi AS, Metha GF, Andersson GG. A Review of State of the Art in Phosphine Ligated Gold Clusters and Application in Catalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105692. [PMID: 35332703 PMCID: PMC9130904 DOI: 10.1002/advs.202105692] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/23/2022] [Indexed: 05/28/2023]
Abstract
Atomically precise gold clusters are highly desirable due to their well-defined structure which allows the study of structure-property relationships. In addition, they have potential in technological applications such as nanoscale catalysis. The structural, chemical, electronic, and optical properties of ligated gold clusters are strongly defined by the metal-ligand interaction and type of ligands. This critical feature renders gold-phosphine clusters unique and distinct from other ligand-protected gold clusters. The use of multidentate phosphines enables preparation of varying core sizes and exotic structures beyond regular polyhedrons. Weak gold-phosphorous (Au-P) bonding is advantageous for ligand exchange and removal for specific applications, such as catalysis, without agglomeration. The aim of this review is to provide a unified view of gold-phosphine clusters and to present an in-depth discussion on recent advances and key developments for these clusters. This review features the unique chemistry, structural, electronic, and optical properties of gold-phosphine clusters. Advanced characterization techniques, including synchrotron-based spectroscopy, have unraveled substantial effects of Au-P interaction on the composition-, structure-, and size-dependent properties. State-of-the-art theoretical calculations that reveal insights into experimental findings are also discussed. Finally, a discussion of the application of gold-phosphine clusters in catalysis is presented.
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Affiliation(s)
- Rohul H. Adnan
- Department of Chemistry, Faculty of ScienceCenter for Hydrogen EnergyUniversiti Teknologi Malaysia (UTM)Johor Bahru81310Malaysia
| | | | - Abdulrahman S. Alotabi
- Flinders Institute for NanoScale Science and TechnologyFlinders UniversityAdelaideSouth Australia5042Australia
- Department of PhysicsFaculty of Science and Arts in BaljurashiAlbaha UniversityBaljurashi65655Saudi Arabia
| | - Gregory F. Metha
- Department of ChemistryUniversity of AdelaideAdelaideSouth Australia5005Australia
| | - Gunther G. Andersson
- Flinders Institute for NanoScale Science and TechnologyFlinders UniversityAdelaideSouth Australia5042Australia
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5
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Panthi G, Park M. Synthesis of metal nanoclusters and their application in Hg 2+ ions detection: A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127565. [PMID: 34736203 DOI: 10.1016/j.jhazmat.2021.127565] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Mercuric (Hg2+) ions released from human activities, natural phenomena, and industrial sources are regarded as the global pollutant of world's water. Hg2+ ions contaminated water has several adverse effects on human health and the environment even at low concentrations. Therefore, rapid and cost-effective method is urgently required for the detection of Hg2+ ions in water. Although, the current analytical methods applied for the detection of Hg2+ ions provide low detection limit, they are time consuming, require expensive equipment, and are not suitable for in-situ analysis. Metal nanoclusters (MNCs) consisting of several to ten metal atoms are important transition missing between single atoms and plasmonic metal nanoparticles. In addition, sub-nanometer sized MNCs possess unique electronic structures and the subsequent unusual optical, physical, and chemical properties. Because of these novel properties, MNCs as a promising material have attracted considerable attention for the construction of selective and sensitive sensors to monitor water quality. Hence this review is focused on recent advances on synthesis strategies, and optical and chemical properties of various MNCs including their applications to develop optical assay for Hg2+ ions in aqueous solutions.
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Affiliation(s)
- Gopal Panthi
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Republic of Korea.
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Republic of Korea; Woosuk Institute of Smart Convergence Life Care (WSCLC), Woosuk University, Wanju, Chonbuk 55338, Republic of Korea.
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6
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Preparation of blue luminescence gold quantum dots using laser ablation in aromatic solvents. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-02171-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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7
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Gharib M, Galchenko M, Klinke C, Parak WJ, Chakraborty I. Mechanistic insights and selected synthetic routes of atomically precise metal nanoclusters. NANO SELECT 2021. [DOI: 10.1002/nano.202000210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Mustafa Gharib
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
- Radiation Biology Department Egyptian Atomic Energy Authority (EAEA) Cairo Egypt
| | | | - Christian Klinke
- Institute of Physics University of Rostock Albert‐Einstein‐Strasse 23 Rostock Germany
- Department of Chemistry Swansea University – Singleton Park Swansea UK
| | - Wolfgang J. Parak
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
- CIC Biomagune San Sebastian Spain
| | - Indranath Chakraborty
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
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8
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Gu W, Zhao Y, Zhuang S, Zha J, Dong J, You Q, Gan Z, Xia N, Li J, Deng H, Wu Z. Unravelling the Structure of a Medium‐Sized Metalloid Gold Nanocluster and its Filming Property. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Wanmiao Gu
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Yan Zhao
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
| | - Shengli Zhuang
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
| | - Jun Zha
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Jingwu Dong
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Qing You
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
| | - Zibao Gan
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
| | - Nan Xia
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
| | - Jin Li
- Tsinghua University-Peking University Joint Center for Life Sciences School of Life Sciences Tsinghua University Beijing 100084 P. R. China
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics School of Life Sciences Tsinghua University Beijing 100084 P. R. China
| | - Zhikun Wu
- Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics, HIPS Chinese Academy of Sciences Hefei 230031 P. R. China
- Institute of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
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9
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Gu W, Zhao Y, Zhuang S, Zha J, Dong J, You Q, Gan Z, Xia N, Li J, Deng H, Wu Z. Unravelling the Structure of a Medium-Sized Metalloid Gold Nanocluster and its Filming Property. Angew Chem Int Ed Engl 2021; 60:11184-11189. [PMID: 33635550 DOI: 10.1002/anie.202100879] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 01/25/2023]
Abstract
Unravelling the structure of thiolated metalloid gold nanoclusters in the medium-sized range by single crystal X-ray crystallography (SCXC) is challenging. Herein, we successfully synthesized a novel Au67 (SR)35 nanocluster, and unravelled its single crystal structure by SCXC, which features a mix-structured Au48 kernel protected by one Au4 (SR)5 staple and fifteen Au(SR)2 staples. Unprecedentedly, this structure can be thermally induced to aggregate into larger nanoparticles and self-deposit to form a gold nanoparticles film onto the walls of a vial or other substrates such as quartz, mica or ceramic, which can be developed into a facile, substrate-universal and scalable filming method. The film exhibits high sensitivity, uniformity and recyclability as a surface-enhanced Raman scattering (SERS) substrate and can be applied for detecting multiple organic pollutants.
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Affiliation(s)
- Wanmiao Gu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yan Zhao
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Shengli Zhuang
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Jun Zha
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jingwu Dong
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Qing You
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Zibao Gan
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Nan Xia
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Jin Li
- Tsinghua University-Peking University Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, P. R. China
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, 100084, P. R. China
| | - Zhikun Wu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
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Negishi Y, Hashimoto S, Ebina A, Hamada K, Hossain S, Kawawaki T. Atomic-level separation of thiolate-protected metal clusters. NANOSCALE 2020; 12:8017-8039. [PMID: 32207494 DOI: 10.1039/d0nr00824a] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Fine metal clusters have attracted much attention from the viewpoints of both basic and applied science for many years because of their unique physical/chemical properties and functions, which differ from those of bulk metals. Among these materials, thiolate (SR)-protected gold clusters (Aun(SR)m clusters) have been the most studied metal clusters since 2000 because of their ease of synthesis and handling. However, in the early 2000s, it was not easy to isolate these metal clusters. Therefore, high-resolution separation methods were explored, and several atomic-level separation methods, including polyacrylamide gel electrophoresis (PAGE), high-performance liquid chromatography (HPLC), and thin-layer chromatography (TLC), were successively established. These techniques have made it possible to isolate a series of Aun(SR)m clusters, and much knowledge has been obtained on the correlation between the chemical composition and fundamental properties such as the stability, electronic structure, and physical properties of Aun(SR)m clusters. In addition, these high-resolution separation techniques are now also frequently used to evaluate the distribution of the product and to track the reaction process. In this way, high-resolution separation techniques have played an essential role in the study of Aun(SR)m clusters. However, only a few reviews have focused on this work. This review focuses on PAGE, HPLC, and TLC separation techniques, which offer high resolution and repeatability, and summarizes previous studies on the high-resolution separation of Aun(SR)m and related clusters with the purpose of promoting a better understanding of the features and the utility of these techniques.
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Affiliation(s)
- Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
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11
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Olenin AY. Chemically Modified Silver and Gold Nanoparticles in Spectrometric Analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819040099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Niihori Y, Yoshida K, Hossain S, Kurashige W, Negishi Y. Deepening the Understanding of Thiolate-Protected Metal Clusters Using High-Performance Liquid Chromatography. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180357] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Yoshiki Niihori
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kana Yoshida
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Sakiat Hossain
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Wataru Kurashige
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Photocatalysis International Research Center, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Photocatalysis International Research Center, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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13
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Sot J, Mendanha-Neto SA, Busto JV, García-Arribas AB, Li S, Burgess SW, Shaw WA, Gil-Carton D, Goñi FM, Alonso A. The interaction of lipid-liganded gold clusters (Aurora ™) with lipid bilayers. Chem Phys Lipids 2019; 218:40-46. [DOI: 10.1016/j.chemphyslip.2018.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 10/27/2022]
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Muñoz-Castro A. Single, double, and triple intercluster bonds: analyses of M2Au36(SR)24 (M = Au, Pd, Pt) as 14-, 12- and 10-ve superatomic molecules. Chem Commun (Camb) 2019; 55:7307-7310. [DOI: 10.1039/c9cc02970b] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Single, double, and triple-bonds can be found in fused superatomic clusters.
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Affiliation(s)
- Alvaro Muñoz-Castro
- Instituto de Ciencias Químicas Aplicadas
- Grupo de Química Inorgánica y Materiales Moleculares
- Facultad de Ingeniería
- Universidad Autonoma de Chile
- San Miguel
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15
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Knoppe S, Vogt P. HPLC of Monolayer-Protected Gold Clusters with Baseline Separation. Anal Chem 2018; 91:1603-1609. [DOI: 10.1021/acs.analchem.8b05064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Stefan Knoppe
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
- Max-Planck Institute for Intelligent Systems, Heisenbergstraße 3, 70569 Stuttgart, Germany
| | - Pascal Vogt
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
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Kang X, Chong H, Zhu M. Au 25(SR) 18: the captain of the great nanocluster ship. NANOSCALE 2018; 10:10758-10834. [PMID: 29873658 DOI: 10.1039/c8nr02973c] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Noble metal nanoclusters are in the intermediate state between discrete atoms and plasmonic nanoparticles and are of significance due to their atomically accurate structures, intriguing properties, and great potential for applications in various fields. In addition, the size-dependent properties of nanoclusters construct a platform for thoroughly researching the structure (composition)-property correlations, which is favorable for obtaining novel nanomaterials with enhanced physicochemical properties. Thus far, more than 100 species of nanoclusters (mono-metallic Au or Ag nanoclusters, and bi- or tri-metallic alloy nanoclusters) with crystal structures have been reported. Among these nanoclusters, Au25(SR)18-the brightest molecular star in the nanocluster field-is capable of revealing the past developments and prospecting the future of the nanoclusters. Since being successfully synthesized (in 1998, with a 20-year history) and structurally determined (in 2008, with a 10-year history), Au25(SR)18 has stimulated the interest of chemists as well as material scientists, due to the early discovery, easy preparation, high stability, and easy functionalization and application of this molecular star. In this review, the preparation methods, crystal structures, physicochemical properties, and practical applications of Au25(SR)18 are summarized. The properties of Au25(SR)18 range from optics and chirality to magnetism and electrochemistry, and the property-oriented applications include catalysis, chemical imaging, sensing, biological labeling, biomedicine and beyond. Furthermore, the research progress on the Ag-based M25(SR)18 counterpart (i.e., Ag25(SR)18) is included in this review due to its homologous composition, construction and optical absorption to its gold-counterpart Au25(SR)18. Moreover, the alloying methods, metal-exchange sites and property alternations based on the templated Au25(SR)18 are highlighted. Finally, some perspectives and challenges for the future research of the Au25(SR)18 nanocluster are proposed (also holding true for all members in the nanocluster field). This review is directed toward the broader scientific community interested in the metal nanocluster field, and hopefully opens up new horizons for scientists studying nanomaterials. This review is based on the publications available up to March 2018.
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Affiliation(s)
- Xi Kang
- Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Institute of Physical Science and Information Technology and AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, P. R. China.
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17
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Jin S, Du W, Wang S, Kang X, Chen M, Hu D, Chen S, Zou X, Sun G, Zhu M. Thiol-Induced Synthesis of Phosphine-Protected Gold Nanoclusters with Atomic Precision and Controlling the Structure by Ligand/Metal Engineering. Inorg Chem 2017; 56:11151-11159. [DOI: 10.1021/acs.inorgchem.7b01458] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shan Jin
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Wenjun Du
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Shuxin Wang
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Xi Kang
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Man Chen
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Daqiao Hu
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Shuang Chen
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Xuejuan Zou
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Guodong Sun
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Manzhou Zhu
- Department of Chemistry and Center for
Atomic Engineering of Advanced Materials, AnHui Province Key Laboratory
of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei, Anhui 230601, People’s Republic of China
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18
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Chakraborty I, Pradeep T. Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles. Chem Rev 2017; 117:8208-8271. [DOI: 10.1021/acs.chemrev.6b00769] [Citation(s) in RCA: 1305] [Impact Index Per Article: 186.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Indranath Chakraborty
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Thalappil Pradeep
- DST Unit of Nanoscience (DST
UNS) and Thematic Unit of Excellence, Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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19
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Ma W, Xu L, de Moura AF, Wu X, Kuang H, Xu C, Kotov NA. Chiral Inorganic Nanostructures. Chem Rev 2017; 117:8041-8093. [DOI: 10.1021/acs.chemrev.6b00755] [Citation(s) in RCA: 485] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - André F. de Moura
- Department
of Chemistry, Federal University of São Carlos, CP 676, CEP 13.565-905, São Carlos, SP, Brazil
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20
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Reid BT, Reed SM. Improved methods for evaluating the environmental impact of nanoparticle synthesis†. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2016; 18:4263-4269. [PMID: 28428727 PMCID: PMC5393458 DOI: 10.1039/c6gc00383d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
With the market for products containing nanoparticles growing, improvements in the efficiency of nanoparticle synthesis are poised to have significant positive economic and environmental impacts. While many metrics have been designed for measuring the efficiency of small molecule synthesis, the use of these metrics for evaluating nanoparticle preparation has not been optimized. Here a critical evaluation of various green chemistry metrics is provided as they are applied to a common set of nanoparticle synthetic methods. The effect of the nanoparticle polydispersity on the relative greenness of different synthetic methods is also examined. Using metrics modified to account for polydispersity, a case study of gold nanoparticle syntheses is provided and three different methods of preparing monodisperse gold nanoparticles are compared. Interestingly, not all of the metrics provide the same rankings for the synthetic methods. And when polydispersity is ignored, the metrics provide a different rank order of the methods, highlighting the importance of clearly defining the desired nanoparticle size range to avoid underestimating the environmental impact.
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21
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Xu WW, Li Y, Gao Y, Zeng XC. Medium-sized Au40(SR)24 and Au52(SR)32 nanoclusters with distinct gold-kernel structures and spectroscopic features. NANOSCALE 2016; 8:1299-1304. [PMID: 26676095 DOI: 10.1039/c5nr07810e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have analyzed the structures of two medium-sized thiolate-protected gold nanoparticles (RS-AuNPs) Au40(SR)24 and Au52(SR)32 and identified the distinct structural features in their Au kernels [Sci. Adv., 2015, 1, e1500425]. We find that both Au kernels of the Au40(SR)24 and Au52(SR)32 nanoclusters can be classified as interpenetrating cuboctahedra. Simulated X-ray diffraction patterns of the RS-AuNPs with the cuboctahedral kernel are collected and then compared with the X-ray diffraction patterns of the RS-AuNPs of two other prevailing Au-kernels identified from previous experiments, namely the Ino-decahedral kernel and icosahedral kernel. The distinct X-ray diffraction patterns of RS-AuNPs with the three different types of Au-kernels can be utilized as signature features for future studies of structures of RS-AuNPs. Moreover, the simulated UV/Vis absorption spectra and Kohn-Sham orbital energy-level diagrams are obtained for the Au40(SR)24 and Au52(SR)32, on the basis of time-dependent density functional theory computation. The extrapolated optical band-edges of Au40(SR)24 and Au52(SR)32 are 1.1 eV and 1.25 eV, respectively. The feature peaks in the UV/Vis absorption spectra of the two clusters can be attributed to the d → sp electronic transition. Lastly, the catalytic activities of the Au40(SR)24 and Au52(SR)32 are examined using CO oxidation as a probe. Both medium-sized thiolate-protected gold clusters can serve as effective stand-alone nanocatalysts.
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Affiliation(s)
- Wen Wu Xu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
| | - Yadong Li
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China. and Shanghai Science Research Center, Chinese Academy of Sciences, Shanghai 201204, China
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA. and Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei, Anhui 230026, China
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22
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Pengo P, Pasquato L. Gold nanoparticles protected by fluorinated ligands: Syntheses, properties and applications. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.03.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Takano S, Yamazoe S, Koyasu K, Tsukuda T. Slow-Reduction Synthesis of a Thiolate-Protected One-Dimensional Gold Cluster Showing an Intense Near-Infrared Absorption. J Am Chem Soc 2015; 137:7027-30. [DOI: 10.1021/jacs.5b03251] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shinjiro Takano
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Seiji Yamazoe
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Elements Strategy Initiative for Catalysis and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Kiichirou Koyasu
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Elements Strategy Initiative for Catalysis and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Tatsuya Tsukuda
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Elements Strategy Initiative for Catalysis and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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24
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Liu C, Lin J, Shi Y, Li G. Efficient synthesis of Au₉₉(SR)₄₂ nanoclusters. NANOSCALE 2015; 7:5987-90. [PMID: 25772552 DOI: 10.1039/c5nr00543d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We report a new synthetic protocol of Au99(SPh)42 nanoclusters with moderate efficiency (∼15% yield based on HAuCl4), via a combination of the ligand-exchange and "size-focusing" processes. The purity of the as-prepared gold nanoclusters is characterized by matrix-assisted laser desorption ionization mass spectrometry and size exclusion chromatography.
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Affiliation(s)
- Chao Liu
- State Key Laboratory of Catalysis & Gold Catalysis Researcher Centre, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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25
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Panthi B, Mukhopadhyay A, Tibbitts L, Saavedra J, Pursell CJ, Rioux RM, Chandler BD. Using Thiol Adsorption on Supported Au Nanoparticle Catalysts To Evaluate Au Dispersion and the Number of Active Sites for Benzyl Alcohol Oxidation. ACS Catal 2015. [DOI: 10.1021/cs501942t] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Basu Panthi
- Department
of Chemistry, Trinity University, San Antonio, Texas 78212-7200, United States
| | | | - Luke Tibbitts
- Department
of Chemistry, Trinity University, San Antonio, Texas 78212-7200, United States
| | - Johnny Saavedra
- Department
of Chemistry, Trinity University, San Antonio, Texas 78212-7200, United States
| | - Christopher J. Pursell
- Department
of Chemistry, Trinity University, San Antonio, Texas 78212-7200, United States
| | | | - Bert D. Chandler
- Department
of Chemistry, Trinity University, San Antonio, Texas 78212-7200, United States
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26
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Roy S, Baral A, Bhattacharjee R, Jana B, Datta A, Ghosh S, Banerjee A. Preparation of multi-coloured different sized fluorescent gold clusters from blue to NIR, structural analysis of the blue emitting Au7 cluster, and cell-imaging by the NIR gold cluster. NANOSCALE 2015; 7:1912-1920. [PMID: 25529745 DOI: 10.1039/c4nr04338c] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Blue, green, orange-red, red and NIR emitting gold quantum clusters have been prepared in aqueous media by using a bioactive peptide glutathione (reduced) at physiological pH. Matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF MS) analyses show that the core structure sizes of the five different gold clusters are Au7 (blue), Au16 (green), Au19 (orange-red), Au21 (red) and Au22 (NIR). The photo-stability and pH-stability of these quantum clusters have been measured, and these are photo-stable against continuous UV irradiation for a few hours. They also exhibit moderate to good pH-stability within the pH range of 5-12.5. A computational study reveals the organisation of gold atoms in the thiolate-protected blue quantum cluster and its several structural parameters, including the mode of interaction of ligand molecules with Au atoms in the Au7 cluster. Interestingly, it has been found that NIR emitting gold quantum cluster can easily be internalized into the adenocarcinomic human alveolar basal epithelial cell line (A549 cell line). Moreover, a MTT assay indicates that our NIR emitting gold quantum cluster show very low cytotoxicy to A549 cancer cells.
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Affiliation(s)
- Subhasish Roy
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India.
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27
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Xu S, Liu P, Song Q, Wang L, Luo X. One-pot synthesis of biofunctional and near-infrared fluorescent gold nanodots and their application in Pb2+ sensing and tumor cell imaging. RSC Adv 2015. [DOI: 10.1039/c4ra12198h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monodisperse and water-soluble Cys-Au dots with near-infrared emission successfully prepared by a one-pot synthesis approach, and the as-prepared Au dots could be used for long-term tumor cell imaging and highly selective detecting Pb2+.
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Affiliation(s)
- Shenghao Xu
- Key Laboratory of Sensor Analysis of Tumor Marker Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Pingping Liu
- Zhengzhou Tobacco Research Institute, CNTC
- Zhengzhou
- P. R. China
| | - Quanwei Song
- Key Laboratory of Theoretical and Computational Photochemistry
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Le Wang
- Key Laboratory of Theoretical and Computational Photochemistry
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Xiliang Luo
- Key Laboratory of Sensor Analysis of Tumor Marker Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
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28
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Adnan RH, Andersson GG, Polson MIJ, Metha GF, Golovko VB. Factors influencing the catalytic oxidation of benzyl alcohol using supported phosphine-capped gold nanoparticles. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01168f] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The nature of Au cluster precursor and activation treatments affect catalyst activity in aerobic benzyl alcohol oxidation.
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Affiliation(s)
- Rohul H. Adnan
- Department of Chemistry
- University of Canterbury
- Christchurch
- New Zealand
- Chemistry Department
| | - Gunther G. Andersson
- Flinders Centre for Nanoscale Science and Technology
- Flinders University
- Adelaide
- Australia
| | | | | | - Vladimir B. Golovko
- Department of Chemistry
- University of Canterbury
- Christchurch
- New Zealand
- The MacDiarmid Institute for Advanced Materials and Nanotechnology
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29
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Ahuja T, Wang D, Tang Z, Robinson DA, Padelford JW, Wang G. Electronic coupling between ligand and core energy states in dithiolate-monothiolate stabilized Au clusters. Phys Chem Chem Phys 2015; 17:19342-9. [DOI: 10.1039/c5cp02685g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiple electron relaxation steps between the core and the ligands in Au130 dithiolate clusters were quantified.
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Affiliation(s)
- Tarushee Ahuja
- Department of Chemistry
- Georgia State University
- Atlanta, Georgia 30302
- USA
| | - Dengchao Wang
- Department of Chemistry
- Georgia State University
- Atlanta, Georgia 30302
- USA
| | - Zhenghua Tang
- Department of Chemistry
- Georgia State University
- Atlanta, Georgia 30302
- USA
| | - Donald A. Robinson
- Department of Chemistry
- Georgia State University
- Atlanta, Georgia 30302
- USA
| | | | - Gangli Wang
- Department of Chemistry
- Georgia State University
- Atlanta, Georgia 30302
- USA
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30
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Li MB, Tian SK, Wu Z, Jin R. Cu2+ induced formation of Au44(SC2H4Ph)32 and its high catalytic activity for the reduction of 4-nitrophenol at low temperature. Chem Commun (Camb) 2015; 51:4433-6. [DOI: 10.1039/c4cc08830a] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel nanocluster Au44(SC2H4Ph)32 exhibiting high catalytic activity at low-temperature was synthesized by an oxidation–decomposition–recombination (ODR) process.
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Affiliation(s)
- Man-Bo Li
- Key Laboratory of Materials Physics
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
| | - Shi-Kai Tian
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Zhikun Wu
- Key Laboratory of Materials Physics
- Anhui Key Laboratory of Nanomaterials and Nanostructures
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
| | - Rongchao Jin
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
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31
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Xu S, Lu X, Yao C, Huang F, Jiang H, Hua W, Na N, Liu H, Ouyang J. A Visual Sensor Array for Pattern Recognition Analysis of Proteins Using Novel Blue-Emitting Fluorescent Gold Nanoclusters. Anal Chem 2014; 86:11634-9. [DOI: 10.1021/ac502643s] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shenghao Xu
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
- Key Laboratory
of Sensor Analysis of Tumor Marker Ministry of Education, College
of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, People’s Republic of China
| | - Xin Lu
- National Institutes
for Food and Drug Control, Beijing 100050, People’s Republic of China
| | - Chenxi Yao
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Fu Huang
- Beijing
National Laboratory for Molecular Sciences, CAS Key Laboratory of
Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Hua Jiang
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Wenhao Hua
- Department
of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing 100050, People’s Republic of China
| | - Na Na
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Haiyan Liu
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Jin Ouyang
- Key
Laboratory of Theoretical and Computational Photochemistry, Ministry
of Education, College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
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32
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Sims KH, Tytler EM, Tipton J, Hill KL, Burgess SW, Shaw WA. Avanti lipid tools: connecting lipids, technology, and cell biology. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1841:1038-48. [PMID: 24954118 DOI: 10.1016/j.bbalip.2014.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 05/21/2014] [Accepted: 05/23/2014] [Indexed: 11/15/2022]
Abstract
Lipid research is challenging owing to the complexity and diversity of the lipidome. Here we review a set of experimental tools developed for the seasoned lipid researcher, as well as, those who are new to the field of lipid research. Novel tools for probing protein-lipid interactions, applications for lipid binding antibodies, enhanced systems for the cellular delivery of lipids, improved visualization of lipid membranes using gold-labeled lipids, and advances in mass spectrometric analysis techniques will be discussed. Because lipid mediators are known to participate in a host of signal transduction and trafficking pathways within the cell, a comprehensive lipid toolbox that aids the science of lipidomics research is essential to better understand the molecular mechanisms of interactions between cellular components. This article is part of a Special Issue entitled Tools to study lipid functions.
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Affiliation(s)
- Kacee H Sims
- Avanti Polar Lipids, Inc., 700 Industrial Park Drive, Alabaster, Al 35007, USA.
| | - Ewan M Tytler
- Avanti Polar Lipids, Inc., 700 Industrial Park Drive, Alabaster, Al 35007, USA.
| | - John Tipton
- Avanti Polar Lipids, Inc., 700 Industrial Park Drive, Alabaster, Al 35007, USA.
| | - Kasey L Hill
- Avanti Polar Lipids, Inc., 700 Industrial Park Drive, Alabaster, Al 35007, USA.
| | - Stephen W Burgess
- Avanti Polar Lipids, Inc., 700 Industrial Park Drive, Alabaster, Al 35007, USA.
| | - Walter A Shaw
- Avanti Polar Lipids, Inc., 700 Industrial Park Drive, Alabaster, Al 35007, USA.
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33
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Sarangi NK, Patnaik A. Bio-inspired Janus gold nanoclusters with lipid and amino acid functional capping ligands: micro-voltammetry and in situ electron transfer in a biogenic environment. RSC Adv 2014. [DOI: 10.1039/c4ra01869a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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34
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Orza A, Casciano D, Biris A. Nanomaterials for targeted drug delivery to cancer stem cells. Drug Metab Rev 2014; 46:191-206. [DOI: 10.3109/03602532.2014.900566] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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35
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Tanase T, Otaki R, Nishida T, Takenaka H, Takemura Y, Kure B, Nakajima T, Kitagawa Y, Tsubomura T. Strongly luminous tetranuclear gold(I) complexes supported by tetraphosphine ligands, meso- or rac-bis[(diphenylphosphinomethyl)phenylphosphino]methane. Chemistry 2014; 20:1577-96. [PMID: 24403217 DOI: 10.1002/chem.201303729] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Indexed: 11/11/2022]
Abstract
A series of tetragold(I) complexes supported by tetraphosphine ligands, meso- and rac-bis[(diphenylphosphinomethyl)phenylphosphino]methane (meso- and rac-dpmppm) were synthesized and characterized to show that the tetranuclear Au(I) alignment varies depending on syn- and anti-arrangements of the two dpmppm ligands with respect to the metal chain. The structures of syn-[Au4 (meso-dpmppm)2X]X'3 (X = Cl; X' = Cl (4 a), PF6 (4 b), BF4 (4 c)) and syn-[Au4 (meso-dpmppm)2]X4 (X = PF6 (4 d), BF4 (4 e), TfO (4 f); TfO = triflate) involved a bent tetragold(I) core with a counter anion X incorporated into the bent pocket. Complexes anti-[Au4 (meso-dpmppm)2]X4 (X = PF6 (5 d), BF4 (5 e), TfO (5 f)) contain a linearly ordered Au4 string and complexes syn-[Au4 (rac-dpmppm)2X2]X'2 (X = Cl, X' = Cl (6 a), PF6 (6 b), BF4 (6 c)) and syn-[Au4 (rac-dpmppm)2]X4 (X = PF6 (6 d), BF4 (6 e), TfO (6 f)) consist of a zigzag tetragold(I) chain supported by the two syn-arranged rac-dpmppm ligands. Complexes 4 d-f, 5 d-f, and 6 d-f with non-coordinative large anions are strongly luminescent in the solid state (λmax = 475-515 nm, Φ = 0.67-0.85) and in acetonitrile (λmax = 491-520 nm, Φ = 0.33-0.97); the emission was assigned to phosphorescence from (3) [dσ*σ*σ* pσσσ] excited state of the Au4 centers on the basis of DFT calculations as well as the long lifetime (a few μs). The emission energy is predominantly determined by the HOMO and LUMO characters of the Au4 centers, which depend on the bent (4), linear (5), and zigzag (6) alignments. The strong emissions in acetonitrile were quenched by chloride anions through simultaneous dynamic and static quenching processes, in which static binding of chloride ions to the Au4 excited species should be the most effective. The present study demonstrates that the structures of linear tetranuclear gold(I) chains can be modified by utilizing the stereoisomeric tetraphosphines, meso- and rac-dpmppm, which may lead to fine tuning of the strongly luminescent properties intrinsic to the Au(I) 4 cluster centers.
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Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara, 630-8506 (Japan)
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36
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Ke CY, Chen TH, Lu LC, Tseng WL. Understanding thiol-induced etching of luminescent gold nanoclusters. RSC Adv 2014. [DOI: 10.1039/c4ra02111h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Electron injection from thiol ligands to Au8 clusters is a driving force for thiol-induced core etching of protein-stabilized Au8 clusters.
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Affiliation(s)
- Chen-Yi Ke
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung, Taiwan
| | - Tzu-Heng Chen
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung, Taiwan
| | - Lin-Chen Lu
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung, Taiwan
| | - Wei-Lung Tseng
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung, Taiwan
- School of Pharmacy
- College of Pharmacy
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37
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Kuo CT, Chen CF, Gu MW, Su MN, Huang JF, Huang MJ, Chen CH. On the Size Evolution of Monolayer-Protected Gold Clusters during Ligand Place-Exchange Reactions: The Effect of Solvents. Chem Asian J 2013; 9:844-51. [DOI: 10.1002/asia.201301182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 10/05/2013] [Indexed: 11/08/2022]
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38
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Miyachi M, Yamanoi Y, Nakazato K, Nishihara H. Bio-inspired photoresponse of porphyrin-attached gold nanoparticles on a field-effect transistor. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2013; 1837:1567-71. [PMID: 24291676 DOI: 10.1016/j.bbabio.2013.11.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 11/07/2013] [Accepted: 11/15/2013] [Indexed: 10/26/2022]
Abstract
A bio-inspired photoresponse was engineered in porphyrin-attached Au nanoparticles (AuNPs) on a field-effect transistor (FET). The system mimics photosynthetic electron transfer, using porphyrin derivatives as photosensitizers and AuNPs as photoelectron counting devices. Porphyrin-protected AuNPs were immobilized onto the gate of an FET via the formation of self-assembled monolayers. Photoinduced electron transfer from the porphyrin led to single electron transfer at the Au nanoparticles, which was monitored via a changing gate voltage on the FET in the presence of organic electrolyte. The further attachment of other functional molecules to this system should enable various other potential functionalities. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
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Affiliation(s)
- Mariko Miyachi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshinori Yamanoi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Kazuo Nakazato
- Department of Electrical Engineering and Computer Science, School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroshi Nishihara
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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39
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Zeng C, Liu C, Pei Y, Jin R. Thiol ligand-induced transformation of Au38(SC2H4Ph)24 to Au36(SPh-t-Bu)24. ACS NANO 2013; 7:6138-45. [PMID: 23758648 DOI: 10.1021/nn401971g] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report a disproportionation mechanism identified in the transformation of rod-like biicosahedral Au38(SCH2CH2Ph)24 to tetrahedral Au36(TBBT)24 nanoclusters. Time-dependent mass spectrometry and optical spectroscopy analyses unambiguously map out the detailed size-conversion pathway. The ligand exchange of Au38(SCH2CH2Ph)24 with bulkier 4-tert-butylbenzenethiol (TBBT) until a certain extent starts to trigger structural distortion of the initial biicosahedral Au38(SCH2CH2Ph)24 structure, leading to the release of two Au atoms and eventually the Au36(TBBT)24 nanocluster with a tetrahedral structure, in which process the number of ligands is interestingly preserved. The other product of the disproportionation process, i.e., Au40(TBBT)m+2(SCH2CH2Ph)24-m, was concurrently observed as an intermediate, which was the result of addition of two Au atoms and two TBBT ligands to Au38(TBBT)m(SCH2CH2Ph)24-m. The reaction kinetics on the Au38(SCH2CH2Ph)24 to Au36(TBBT)24 conversion process was also performed, and the activation energies of the structural distortion and disproportionation steps were estimated to be 76 and 94 kJ/mol, respectively. The optical absorption features of Au36(TBBT)24 are interpreted on the basis of density functional theory simulations.
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Affiliation(s)
- Chenjie Zeng
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA
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40
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Yu Y, Yao Q, Luo Z, Yuan X, Lee JY, Xie J. Precursor engineering and controlled conversion for the synthesis of monodisperse thiolate-protected metal nanoclusters. NANOSCALE 2013; 5:4606-20. [PMID: 23598432 DOI: 10.1039/c3nr00464c] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In very recent years, thiolate-protected metal nanoclusters (or thiolated MNCs) with core sizes smaller than 2 nm have emerged as a new direction in nanoparticle research due to their discrete and size dependent electronic structures and molecular-like properties, such as HOMO-LUMO transitions in optical absorptions, quantized charging, and strong luminescence. Synthesis of monodisperse thiolated MNCs in sufficiently large quantities (up to several hundred micrograms) is necessary for establishing reliable size-property relationships and exploring potential applications. This Feature Article reviews recent progress in the development of synthetic strategies for the production of monodisperse thiolated MNCs. The preparation of monodisperse thiolated MNCs is viewed as an engineerable process where both the precursors (input) and their conversion chemistry (processing) may be rationally designed to achieve the desired outcome - monodisperse thiolated MNCs (output). Several strategies for tailoring the precursor and the conversion process are analyzed to arrive at a unifying understanding of the processes involved.
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Affiliation(s)
- Yong Yu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
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41
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Chen Z, Chen G. Non-covalent Sugar Modification and Self-assembly of Fluorous Gold Nanoparticles Driven by Fluorous Interaction. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300274] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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42
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Aldeek F, Muhammed MAH, Palui G, Zhan N, Mattoussi H. Growth of highly fluorescent polyethylene glycol- and zwitterion-functionalized gold nanoclusters. ACS NANO 2013; 7:2509-21. [PMID: 23394608 DOI: 10.1021/nn305856t] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We have prepared and characterized a new set of highly fluorescent gold nanoclusters (AuNCs) using one-step aqueous reduction of a gold precursor in the presence of bidentate ligands made of lipoic acid anchoring groups, appended with either a poly(ethylene glycol) short chain or a zwitterion group. The AuNCs fluoresce in the red to near-infrared region of the optical spectrum with emission centered at ∼750 nm and a quantum yield of ∼10-14%, and they exhibit long fluorescence lifetimes (up to ∼300 ns). Dispersions of these AuNCs exhibit great long-term colloidal stability, over a wide range of pHs (2-13) and in the presence of high electrolyte concentrations, and a strong resistance to reducing agents such as glutathione. The growth strategy further permitted the controlled, in situ functionalization of the NCs with reactive groups (e.g., carboxylic acid or amine), making these nanoclusters compatible with common and simple-to-implement coupling strategies, such as carbodiimide chemistry. These properties combined make these fluorescent NCs greatly promising for use in various imaging and sensing applications where NIR and long-lived excitations are desired.
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Affiliation(s)
- Fadi Aldeek
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306, United States
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Nimmala PR, Yoon B, Whetten RL, Landman U, Dass A. Au67(SR)35 Nanomolecules: Characteristic Size-Specific Optical, Electrochemical, Structural Properties and First-Principles Theoretical Analysis. J Phys Chem A 2013; 117:504-17. [DOI: 10.1021/jp311491v] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Praneeth Reddy Nimmala
- Department of Chemistry and
Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | - Bokwon Yoon
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430,
United States
| | - Robert L. Whetten
- School of Chemistry
and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332,
United States
| | - Uzi Landman
- School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430,
United States
| | - Amala Dass
- Department of Chemistry and
Biochemistry, University of Mississippi, University, Mississippi 38677, United States
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44
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Lu Y, Chen W. Progress in the Synthesis and Characterization of Gold Nanoclusters. STRUCTURE AND BONDING 2013. [DOI: 10.1007/430_2013_126] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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45
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Negishi Y, Kurashige W, Niihori Y, Nobusada K. Toward the creation of stable, functionalized metal clusters. Phys Chem Chem Phys 2013; 15:18736-51. [DOI: 10.1039/c3cp52837e] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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46
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Antonello S, Hesari M, Polo F, Maran F. Electron transfer catalysis with monolayer protected Au₂₅ clusters. NANOSCALE 2012; 4:5333-42. [PMID: 22772766 DOI: 10.1039/c2nr31066j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Au₂₅L₁₈ (L = S(CH₂)₂Ph) clusters were prepared and characterized. The resulting monodisperse clusters were reacted with bis(pentafluorobenzoyl) peroxide in dichloromethane to form Au₂₅L₁₈⁺ quantitatively. The kinetics and thermodynamics of the corresponding electron transfer (ET) reactions were characterized via electrochemistry and thermochemical calculations. Au₂₅L₁₈⁺ was used in homogeneous redox catalysis experiments with a series of sym-substituted benzoyl peroxides, including the above peroxide, bis(para-cyanobenzoyl) peroxide, dibenzoyl peroxide, and bis(para-methoxybenzoyl) peroxide. Peroxide dissociative ET was catalyzed using both the Au₂₅L₁₈/Au₂₅L₁₈⁻ and the Au₂₅L₁₈⁺/Au₂₅L₁₈ redox couples as redox mediators. Simulation of the CV curves led to determination of the ET rate constant (k(ET)) values for concerted dissociative ET to the peroxides. The ET free energy ΔG° could be estimated for all donor-acceptor combinations, leading to observation of a nice activation-driving force (log k(ET)vs.ΔG°) relationship. Comparison with the k(ET) obtained using a ferrocene-type donor with a formal potential similar to that of Au₂₅L₁₈/Au₂₅L₁₈⁻ showed that the presence of the capping monolayer affects the ET rate rather significantly, which is attributed to the intrinsic nonadiabaticity of peroxide acceptors.
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Affiliation(s)
- Sabrina Antonello
- Department of Chemistry, University of Padova, via Marzolo 1, 35131 Padova, Italy.
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47
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Kwak K, Lee D. Electrochemical Characterization of Water-Soluble Au25 Nanoclusters Enabled by Phase-Transfer Reaction. J Phys Chem Lett 2012; 3:2476-81. [PMID: 26292136 DOI: 10.1021/jz301059w] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report the synthesis and electrochemical characterization of a new water-soluble Au25 cluster protected with (3-mercaptopropyl)sulfonate. The presence of sulfonate terminal groups on the surface of the cluster enabled facile phase transfer of the water-soluble cluster to organic phase by ion-pairing with hydrophobic counterions. The phase-transferred form of the water-soluble Au25 cluster was found to retain its integrity and allowed investigation of its electrochemical properties in organic media. The voltammetric investigation of the phase-transferred Au25 cluster in mixtures of CH2Cl2 and toluene has revealed that the cluster exhibits the characteristic Au25 peak pattern, but the electrochemical HOMO-LUMO energy gap of the cluster varies from 1.39 to 1.66 V depending on the solvent polarity. The origin of the solvent dependence is explained by the electrostatic field effect of the sulfonate anion on the redox potentials of the Au25 cluster.
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Affiliation(s)
- Kyuju Kwak
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Dongil Lee
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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48
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Li Y, Liu S, Yao T, Sun Z, Jiang Z, Huang Y, Cheng H, Huang Y, Jiang Y, Xie Z, Pan G, Yan W, Wei S. Controllable synthesis of gold nanoparticles with ultrasmall size and high monodispersity via continuous supplement of precursor. Dalton Trans 2012; 41:11725-30. [PMID: 22903561 DOI: 10.1039/c2dt31270k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of monodisperse small Au nanoparticles in a controllable manner is of great importance for fundamental science and technical applications. Here, we report a "precursor continuous-supply" strategy for controllable synthesis of 0.9-3.3 nm Au nanoparticles with a narrow size distribution of 0.1-0.2 nm, using a weak reductant to slow-down the reducing rate of AuClPPh(3) precursor in ethanol. Time-dependent X-ray absorption and UV-Vis absorption measurements revealed that owing to the joint use of AuClPPh(3) and ethanol, the remnant AuClPPh(3) was self-supplied and the precursor concentration was maintained at a level near to its equilibrium solubility (ca. 1.65 mmol L(-1)) in ethanol. Hence the nucleation duration was extended that focused the initial size distribution of the Au clusters. With reaction going on for 58 min, most of AuClPPh(3) with a nominal Au concentration of 17.86 mmol L(-1) was converted to ethanol-soluble Au clusters with a size of about 1.0 nm, resulting in a high-yield synthesis.
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Affiliation(s)
- Yuanyuan Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, PR China
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Yamamoto H, Yano H, Kouchi H, Obora Y, Arakawa R, Kawasaki H. N,N-Dimethylformamide-stabilized gold nanoclusters as a catalyst for the reduction of 4-nitrophenol. NANOSCALE 2012; 4:4148-54. [PMID: 22422276 DOI: 10.1039/c2nr30222e] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In this study, we investigated the catalytic properties of N,N-dimethylformamide (DMF)-stabilized gold nanoclusters (AuNCs) in the reduction of 4-nitrophenol (PNP) to 4-aminophenol by NaBH(4), a well known model reaction to be catalyzed by metal surfaces. The DMF-stabilized AuNCs were prepared in DMF by a surfactant-free method. The DMF-stabilized AuNCs showed high catalytic activity even when used in small quantities (∼10(-7) g). The pseudo-first-order rate constant (k(app)) and activation energy were estimated to be 3 × 10(-3) s(-1) and 31 kJ mol(-1), respectively, with 1.0 μM of the gold catalyst at 298 K. The catalytic activity of the DMF-stabilized AuNCs was strongly influenced by the layer of adsorbed DMF on the Au NCs. This layer of adsorbed DMF prohibited the reactants from penetrating to the surface of the AuNCs via the diffusion at the beginning of the reaction, resulting in an induction time (t(0)) before PNP reduction began. Restructuring of the DMF layer (essentially a form of activation) was the key to achieving high catalytic activity. In addition, atomically monodisperse Au(25)(SG)(18)NCs (SG: glutathione) showed higher catalytic activity in the PNP reduction (k(app) = 8 × 10(-3) s(-1)) even with a low catalyst concentration (1.0 μM), and there was no induction time (t(0)) in spite of the strongly binding ligand glutathione. This suggested that the catalytically active surface sites of the Au(25)(SG)(18)NCs were not sterically hindered, possibly because of the unique core-shell-like structure of the NCs. Retaining these open sites on AuNCs may be the key to making the NCs effective catalysts.
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Affiliation(s)
- H Yamamoto
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35, Yamate-cho, Suita-shi, Osaka 564-8680, Japan
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50
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Aikens CM. Modelling small gold and silver nanoparticles with electronic structure methods. MOLECULAR SIMULATION 2012. [DOI: 10.1080/08927022.2012.671522] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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