1
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Veselska O, Guillou N, Diaz-Lopez M, Bordet P, Ledoux G, Lebègue S, Mesbah A, Fateeva A, Demessence A. Sustainable and efficient low‐energy light emitters: a series of one‐dimensional d10 coinage Metal Organic Chalcogenolates, [M(o‐SPhCO2H)]n. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Pierre Bordet
- CNRS: Centre National de la Recherche Scientifique Néel Institute FRANCE
| | - Gilles Ledoux
- CNRS: Centre National de la Recherche Scientifique ILM FRANCE
| | | | - Adel Mesbah
- CNRS: Centre National de la Recherche Scientifique IRCELYON FRANCE
| | | | - Aude Demessence
- CNRS - Lyon University IRCELYON UMR 5256 2 Av Albert EinsteinBat Prettre69626France 69626 VILLEURBANNE FRANCE
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2
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Liu P, Han W, Zheng M, Li W, Ren J, Tlahuice-Flores A, Xu WW. [Au 7(SR) 7] Ring as a New Type of Protection Ligand in a New Atomic Structure of Au 15(SR) 13 Nanocluster. J Phys Chem A 2021; 125:5933-5938. [PMID: 34190555 DOI: 10.1021/acs.jpca.1c04026] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We present a [Au7(SR)7] ring as a new type of protection ligand in a new atomic structure of Au15(SR)13 nanocluster for the first time based on the ring model developed to understand how interfacial interaction dictates the structures of protection motifs and gold cores in thiolate-protected gold nanoclusters. This new Au15(SR)13 model shows a tetrahedral Au4 core protected by one [Au7(SR)7] ring and two [Au2(SR)3] "staple" motifs. Density functional theory (DFT) calculations show that the newly predicted Au15(SR)13 (R = CH3/Ph) has a lower energy of 0.24/0.68 eV than previously proposed isomers. By comparing calculated optical absorption spectra (UV), circular dichroism (CD) spectra, and powder X-ray diffraction (XRD) patterns with related experimental spectra, the calculated CD spectra of the newly predicted Au15(SR)13 (R = CH3/Ph) cannot reproduce the experimental results, indicating that the newly predicted Au15(SR)13 is a new structure that needs to be confirmed by experiment. In addition, DFT calculations also show that the newly predicted Au15(SR)13 (R = CH3/Ph) exhibits a large HOMO-LUMO gap, suggesting its high chemical stability. The proposition of the [Au7(SR)7] ring as a protection ligand in the newly predicted Au15(SR)13 not only enriches the types of protection ligands in thiolate-protected gold nanoclusters but also further confirms the effectiveness and rationality of the ring model for understanding the interfacial interaction between the protection motifs and gold cores in thiolate-protected gold nanoclusters.
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Affiliation(s)
- Pengye Liu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenhua Han
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Mengke Zheng
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
| | - Wenliang Li
- College of Energy Engineering; Xinjiang Institute of Engineering, Urumqi 830023, China
| | - Junfeng Ren
- Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
| | - Alfredo Tlahuice-Flores
- Universidad Autónoma de Nuevo León, CICFIM-Facultad de Ciencias Físico-Matemáticas, San Nicolás de los Garza, Nuevo León 66455, Mexico
| | - Wen Wu Xu
- Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
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3
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Murakami M, Matsumine R, Ono T, Konishi K. Self-assembling-directed Growth and PL Evolution of a Soluble Gold Thiolate Coordination Polymer. CHEM LETT 2020. [DOI: 10.1246/cl.200472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Midori Murakami
- Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo, Hokkaido 060-0810, Japan
| | - Riku Matsumine
- Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo, Hokkaido 060-0810, Japan
| | - Takeya Ono
- Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo, Hokkaido 060-0810, Japan
| | - Katsuaki Konishi
- Graduate School of Environmental Science, Hokkaido University, North 10 West 5, Sapporo, Hokkaido 060-0810, Japan
- Faculty of Environmental Earth Science, Hokkaido University, North 10 West 5, Sapporo, Hokkaido 060-0810, Japan
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4
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Buglak AA, Kononov AI. Comparative study of gold and silver interactions with amino acids and nucleobases. RSC Adv 2020; 10:34149-34160. [PMID: 35519047 PMCID: PMC9056802 DOI: 10.1039/d0ra06486f] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 08/09/2020] [Indexed: 12/13/2022] Open
Abstract
Metal nanoclusters (NCs) have gained much attention in the last decade. In solution, metal nanoclusters can be stabilized by proteins, and, thus, exhibit many advantages in biocatalysis, biosensing, and bioimaging. In spite of much progress in the synthesis of polypeptide-stabilized gold (Au) clusters, their structure, as well as amino acid-cluster and amino acid-Au+ interactions, remain poorly understood. It is not entirely clear which amino acid (AA) residues and sites in the protein are preferred for binding. The understanding of NC-protein interactions and how they evolve in the polypeptide templates is the key to designing Au NCs. In this work, binding of gold ion Au+ and diatomic neutral gold nanocluster Au2 with a full set of α-proteinogenic amino acids is studied using Density Functional Theory (DFT) and the ab initio RI-MP2 method in order to find the preferred sites of gold interaction in proteins. We demonstrated that the interaction of gold cations and clusters with protonated and deprotonated amino acid residues do not differ greatly. The binding affinity of AAs to the Au2 cluster increases in the following order: Cys(-H+) > Asp(-H+) > Tyr(-H+) > Glu(-H+) > Arg > Gln, His, Met ≫ Asn, Pro, Trp > Lys, Tyr, Phe > His(+H+) > Asp > Lys(+H+) > Glu, Leu > Arg(+H+) > Ile, Val, Ala > Thr, Ser > Gly, Cys, which agrees with the available experimental data that gold cluster synthesis occurs in a wide range of pH - amino acid residues with different protonation states are involved in this process. The significant difference in the binding energy of metal atoms with nucleobases and amino acids apparently means that unlike on DNA templates, neutral metal atoms are strongly bound to amino acid residues and can't freely diffuse in a polypeptide globula. This fact allows one to conclude that formation of metal NCs in proteins occurs through the nucleation of reduced Au atoms bound to the neighboring amino acid residues, and the flexibility of the amino acid residue side-chains and protein chain as a whole plays a significant role in this process.
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Affiliation(s)
- Andrey A Buglak
- St. Petersburg State University 199034 Saint-Petersburg Russia
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5
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Vaidya S, Veselska O, Zhadan A, Diaz-Lopez M, Joly Y, Bordet P, Guillou N, Dujardin C, Ledoux G, Toche F, Chiriac R, Fateeva A, Horike S, Demessence A. Transparent and luminescent glasses of gold thiolate coordination polymers. Chem Sci 2020; 11:6815-6823. [PMID: 33033596 PMCID: PMC7505088 DOI: 10.1039/d0sc02258f] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/09/2020] [Indexed: 11/21/2022] Open
Abstract
Obtaining transparent glasses made of functional coordination polymers (CPs) represents a tremendous opportunity for optical applications. In this context, the first transparent and red-emissive glasses of gold thiolate CPs have been obtained by simply applying mechanical pressure to amorphous powders of CPs. The three gold-based CP glasses are composed of either thiophenolate [Au(SPh)] n , phenylmethanethiolate [Au(SMePh)] n or phenylethanethiolate [Au(SEtPh)] n . The presence of a longer alkyl chain between the thiolate and the phenyl ring led to the formation of glass with higher transparency. The glass transitions, measured by thermomechanical analysis (TMA), occurred at lower temperature for CPs with longer alkyl chains. In addition, all three gold thiolate glasses exhibit red emission at 93 K and one of them, [Au(SMePh)] n , remains luminescent even at room temperature. An in-depth structural study of the amorphous gold thiolates by XRD, PDF and EXAFS analysis showed that they are formed of disordered doubly interpenetrated helical chains. These d10 metal-based compounds represent the first examples of transparent and luminescent CP glasses.
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Affiliation(s)
- Shefali Vaidya
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON) , Villeurbanne , France .
| | - Oleksandra Veselska
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON) , Villeurbanne , France .
- Institute of Experimental and Applied Physics , Czech Technical University in Prague , CZ-11000 Prague , Czech Republic
| | - Antonii Zhadan
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON) , Villeurbanne , France .
| | - Maria Diaz-Lopez
- ISIS Facility , STFC Rutherford Appleton Laboratory , Didcot OX11 0QX , UK
- Diamond Light Source Ltd , Diamond House, Harwell Science and Innovation Campus , Didcot OX11 0DE , UK
| | - Yves Joly
- Univ Grenoble Alpes , CNRS , Institut Néel , Grenoble , France
| | - Pierre Bordet
- Univ Grenoble Alpes , CNRS , Institut Néel , Grenoble , France
| | - Nathalie Guillou
- Université Paris-Saclay , UVSQ , CNRS , UMR 8180 , Institut Lavoisier de Versailles , 78000 , Versailles , France
| | - Christophe Dujardin
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Institut Lumière Matière (ILM) , Villeurbanne , France
| | - Gilles Ledoux
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Institut Lumière Matière (ILM) , Villeurbanne , France
| | - François Toche
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Laboratoire des Multimatériaux et Interfaces (LMI) , Villeurbanne , France
| | - Rodica Chiriac
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Laboratoire des Multimatériaux et Interfaces (LMI) , Villeurbanne , France
| | - Alexandra Fateeva
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Laboratoire des Multimatériaux et Interfaces (LMI) , Villeurbanne , France
| | - Satoshi Horike
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Institute for Advanced Study , Kyoto University , Yoshida-Honmachi, Sakyo-ku , Kyoto , Japan
| | - Aude Demessence
- Univ Lyon , Université Claude Bernard Lyon 1 , CNRS , Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON) , Villeurbanne , France .
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6
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Palermo GA, Tarannum M, Egusa S. Luminescence Onset and Mechanism of the Formation of Gold(I)-Thiolate Complexes as the Precursors to Nanoparticles. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:11248-11255. [PMID: 34552684 PMCID: PMC8455096 DOI: 10.1021/acs.jpcc.0c02725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Gold(I) (Au(I))-thiolate complexes are widely believed as the precursors to Au nanoparticle formations. While the literature suggests that the Au(III)-to-thiol ligand stoichiometric ratio of 1:3 is required to reduce a Au(III) and yield a Au(I)-thiolate, other stoichiometric ratios are also known to produce Au nanoparticles upon reduction. Using the characteristic red luminescence of Au(I)-alkanethiolates, we examined the process of their formations and their implications on the Au nanoparticle synthesis in detail. The onset of the luminescence, correlated with the Au(I)-thiolate formation, as well as the kinetics of the luminophore formation were evaluated in terms of the Au(III)-to-alkanethiol ratios. The onset of the luminescence was affected significantly by the solvent polarity during reaction but not post reaction. We found that the kinetics of the luminophore formation can vary widely, requiring from minutes to 24 h for completion depending on the thiol ligands and molar ratios, as well as solvents. This information could help in designing Au nanoparticle syntheses with the logical choice of Au(III)-to-thiol ratio, solvent, and the timing of reduction.
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Affiliation(s)
- Gabriel A Palermo
- Department of Physics and Optical Science, Center for Biomedical Engineering & Science, The University of North Carolina, Charlotte, North Carolina 28223, United States
| | - Mehnaz Tarannum
- Department of Physics and Optical Science, Center for Biomedical Engineering & Science, The University of North Carolina, Charlotte, North Carolina 28223, United States
| | - Shunji Egusa
- Department of Physics and Optical Science, Center for Biomedical Engineering & Science, The University of North Carolina, Charlotte, North Carolina 28223, United States
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7
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Billinge SJL. The rise of the X-ray atomic pair distribution function method: a series of fortunate events. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20180413. [PMID: 31030657 PMCID: PMC6501893 DOI: 10.1098/rsta.2018.0413] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/27/2019] [Indexed: 05/24/2023]
Abstract
The atomic pair distribution function (PDF) technique is a powerful approach to gain quantitative insight into the structure of materials where the structural coherence extends only over a few nanometres. In this paper, I focus on PDF from synchrotron X-rays and describe what is the PDF and where it came from, as well as key moments on the journey that have contributed to its enormous recent growth and expanding impact in materials science today. Synchrotron X-ray sources played a starring role in this story. This article is part of the theme issue 'Fifty years of synchrotron science: achievements and opportunities'.
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Affiliation(s)
- Simon J. L. Billinge
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA
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8
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Chevrier DM, Thanthirige VD, Luo Z, Driscoll S, Cho P, MacDonald MA, Yao Q, Guda R, Xie J, Johnson ER, Chatt A, Zheng N, Zhang P. Structure and formation of highly luminescent protein-stabilized gold clusters. Chem Sci 2018; 9:2782-2790. [PMID: 29732064 PMCID: PMC5914291 DOI: 10.1039/c7sc05086k] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/05/2018] [Indexed: 01/31/2023] Open
Abstract
Highly luminescent gold clusters simultaneously synthesized and stabilized by protein molecules represent a remarkable category of nanoscale materials with promising applications in bionanotechnology as sensors. Nevertheless, the atomic structure and luminescence mechanism of these gold clusters are still unknown after several years of developments. Herein, we report findings on the structure, luminescence and biomolecular self-assembly of gold clusters stabilized by the large globular protein, bovine serum albumin. We highlight the surprising identification of interlocked gold-thiolate rings as the main gold structural unit. Importantly, such gold clusters are in a rigidified state within the protein scaffold, offering an explanation for their highly luminescent character. Combined free-standing cluster synthesis (without protecting protein scaffold) with rigidifying and un-rigidifying experiments, were designed to further verify the luminescence mechanism and gold atomic structure within the protein. Finally, the biomolecular self-assembly process of the protein-stabilized gold clusters was elucidated by time-dependent X-ray absorption spectroscopy measurements and density functional theory calculations.
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Affiliation(s)
- D M Chevrier
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
| | - V D Thanthirige
- Department of Chemistry , Western Michigan University , Kalamazoo , MI49008 , USA
| | - Z Luo
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 119260 , Singapore
| | - S Driscoll
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
| | - P Cho
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
| | - M A MacDonald
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
| | - Q Yao
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 119260 , Singapore
| | - R Guda
- Department of Chemistry , Western Michigan University , Kalamazoo , MI49008 , USA
| | - J Xie
- Department of Chemical and Biomolecular Engineering , National University of Singapore , 119260 , Singapore
| | - E R Johnson
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
| | - A Chatt
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
| | - N Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces , Collaborative Innovation Center of Chemistry for Energy Materials , Engineering Research Center for Nano-Preparation Technology of Fujian Province , National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters , College of Chemistry and Chemical Engineering , Xiamen University , Xiamen , China
| | - P Zhang
- Department of Chemistry , Dalhousie University , 6274 Coburg Road , Halifax , NS B3H4J3 , Canada .
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9
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Robson JA, Gonzàlez de Rivera F, Jantan KA, Wenzel MN, White AJP, Rossell O, Wilton-Ely JDET. Bifunctional Chalcogen Linkers for the Stepwise Generation of Multimetallic Assemblies and Functionalized Nanoparticles. Inorg Chem 2016; 55:12982-12996. [DOI: 10.1021/acs.inorgchem.6b02409] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jonathan A. Robson
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Ferran Gonzàlez de Rivera
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
| | - Khairil A. Jantan
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Margot N. Wenzel
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Oriol Rossell
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
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10
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Merz SN, Farrell ZJ, Dunn CJ, Swanson RJ, Egorov SA, Green DL. Theoretical and Experimental Investigation of Microphase Separation in Mixed Thiol Monolayers on Silver Nanoparticles. ACS NANO 2016; 10:9871-9878. [PMID: 27744676 DOI: 10.1021/acsnano.6b02091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Silver nanoparticles with mixed ligand self-assembled monolayers were synthesized from dodecanethiol and another ligand from a homologous series of alkanethiols (butanethiol, pentanethiol, heptanethiol, octanethiol, nonanethiol, decanethiol, undecanethiol, or dodecanethiol[D25]). These were hypothesized to exhibit ligand phase separation that increases with degree of physical mismatch between the ligands based on the difference in the number of carbons in the two ligands. Dodecanethiol/dodecanethiol[D25] was expected to exhibit minimal phase separation as the ligands have only isotopic differences, while dodecanethiol/butanethiol was hypothesized to exhibit the most phase separation due to the difference in chain length. Phase separation of all other ligand mixtures was expected to fall between these two extremes. Matrix-assisted laser desorption ionization (MALDI) mass spectroscopy provided a value for ligand phase separation by comparison with a binomial (random) model and subsequent calculation of the sum-of-squares error (SSR). These nanoparticle systems were also modeled using the Scheutjens and Fleer self-consistent mean-field theory (SCFT), which determined the most thermodynamically favorable arrangement of ligands on the surface. From MALDI, it was found that dodecanethiol/dodecanethiol[D25] formed a well-mixed monolayer with SSR = 0.002, and dodecanethiol/butanethiol formed a microphase separated monolayer with SSR = 0.164; in intermediate dodecanethiol/alkanethiol mixtures, SSR increased with increasing ligand length difference as expected. For comparison with experiment, an effective SSR value was calculated from SCFT simulations. The SSR values obtained by experiment and theory show good agreement and provide strong support for the validity of SCFT predictions of monolayer structure. These approaches represent robust methods of characterization for ligand phase separation on silver nanoparticles.
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Affiliation(s)
- Steven N Merz
- Department of Chemical Engineering, University of Virginia , 102 Engineers Way, Charlottesville, Virginia 22904, United States
| | - Zachary J Farrell
- Department of Chemical Engineering, University of Virginia , 102 Engineers Way, Charlottesville, Virginia 22904, United States
| | - Caroline J Dunn
- Department of Chemical Engineering, University of Virginia , 102 Engineers Way, Charlottesville, Virginia 22904, United States
| | - Richard J Swanson
- Department of Chemical Engineering, University of Virginia , 102 Engineers Way, Charlottesville, Virginia 22904, United States
| | - Sergei A Egorov
- Department of Chemical Engineering, University of Virginia , 102 Engineers Way, Charlottesville, Virginia 22904, United States
| | - David L Green
- Department of Chemical Engineering, University of Virginia , 102 Engineers Way, Charlottesville, Virginia 22904, United States
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11
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Moser M, Schneider R, Behnke T, Schneider T, Falkenhagen J, Resch-Genger U. Ellman's and Aldrithiol Assay as Versatile and Complementary Tools for the Quantification of Thiol Groups and Ligands on Nanomaterials. Anal Chem 2016; 88:8624-31. [PMID: 27373999 DOI: 10.1021/acs.analchem.6b01798] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Simple, fast, and versatile methods for the quantification of thiol groups are of considerable interest not only for protein analysis but also for the characterization of the surface chemistry of nanomaterials stabilized with thiol ligands or bearing thiol groups for the subsequent (bio-) functionalization via maleimide-thiol chemistry. Here, we compare two simple colorimetric assays, the widely used Ellman's assay performed at alkaline pH and the aldrithiol assay executed at acidic and neutral pH, with respect to their potential for the quantification of thiol groups and thiol ligands on different types of nanoparticles like polystyrene nanoparticles, semiconductor nanocrystals (SC NC), and noble metal particles, and we derive criteria for their use. In order to assess the underlying reaction mechanisms and to obtain stoichiometry factors mandatory for reliable thiol quantification, both methods were studied photometrically and with electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS), thereby demonstrating the influence of different thiols on the reaction mechanism. Our results underline the suitability of both methods for the quantification of directly accessible thiol groups or ligands on the surface of 2D- and 3D-supports, here exemplarily polystyrene nanoparticles. Moreover, we could derive strategies for the use of these simple assays for the determination of masked (i.e., not directly accessible) thiol groups like disulfides such as lipoic acid and thiol stabilizing ligands coordinatively bound to Cd and/or Hg surface atoms of II/VI and ternary SC NC and to gold and silver nanoparticles.
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Affiliation(s)
- Marko Moser
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Ralf Schneider
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Thomas Behnke
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Thomas Schneider
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Jana Falkenhagen
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
| | - Ute Resch-Genger
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstaetter-Str. 11, D-12489 Berlin, Germany
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12
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Zhang Y, Yan M, Wang S, Jiang J, Gao P, Zhang G, Dong C, Shuang S. Facile one-pot synthesis of Au(0)@Au(i)–NAC core–shell nanoclusters with orange-yellow luminescence for cancer cell imaging. RSC Adv 2016. [DOI: 10.1039/c5ra22813a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The core–shell AuNCs synthesized by a facile strategy using NAC as reducing-cum-protecting agent were successfully applied for cancer cell imaging.
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Affiliation(s)
- Yan Zhang
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Meifen Yan
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Songbai Wang
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Jingjing Jiang
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Pengfei Gao
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Guomei Zhang
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Chuan Dong
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
| | - Shaomin Shuang
- School of Chemistry and Chemical Engineering
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
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13
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Chen T, Luo Z, Yao Q, Yeo AXH, Xie J. Synthesis of thiolate-protected Au nanoparticles revisited: U-shape trend between the size of nanoparticles and thiol-to-Au ratio. Chem Commun (Camb) 2016; 52:9522-5. [DOI: 10.1039/c6cc04433f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The formation and state of a protecting layer (Au(i)–thiolate complexes/motifs) determine the size of thiolated Au nanoparticles and nanoclusters, depending on the feeding thiol-to-Au ratio.
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Affiliation(s)
- Tiankai Chen
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
| | - Zhentao Luo
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
| | - Qiaofeng Yao
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
| | - Andrea Xin Hui Yeo
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
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14
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Roşca DA, Bochmann M. Photochemical Disproportionation of an AuII Pincer Complex: Synthesis and Structure of an AuI4AuIII4 Macrocycle. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00846] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Dragoş-Adrian Roşca
- School
of Chemistry, University of East Anglia, Norwich NR4 7TJ, United Kingdom
| | - Manfred Bochmann
- School
of Chemistry, University of East Anglia, Norwich NR4 7TJ, United Kingdom
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15
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Marbella LE, Chevrier DM, Tancini PD, Shobayo O, Smith AM, Johnston KA, Andolina CM, Zhang P, Mpourmpakis G, Millstone JE. Description and Role of Bimetallic Prenucleation Species in the Formation of Small Nanoparticle Alloys. J Am Chem Soc 2015; 137:15852-8. [PMID: 26670347 DOI: 10.1021/jacs.5b10124] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report the identification, description, and role of multinuclear metal-thiolate complexes in aqueous Au-Cu nanoparticle syntheses. The structure of these species was characterized by nuclear magnetic resonance spectroscopy, mass spectrometry, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy techniques. The observed structures were found to be in good agreement with thermodynamic growth trends predicted by first-principles calculations. The presence of metal-thiolate complexes is then shown to be critical for the formation of alloyed Au-Cu architectures in the small nanoparticle regime (diameter ∼2 nm). In the absence of mixed metal-thiolate precursors, nanoparticles form with a Cu-S shell and a Au-rich interior. Taken together, these results demonstrate that prenucleation species, which are discrete molecular precursors distinct from both initial reagents and final particle products, may provide an important new synthetic route to control final metal nanoparticle composition and composition architectures.
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Affiliation(s)
| | - Daniel M Chevrier
- Department of Chemistry, Dalhousie University , Halifax, NS B3H 4J3, Canada
| | | | | | | | | | | | - Peng Zhang
- Department of Chemistry, Dalhousie University , Halifax, NS B3H 4J3, Canada
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16
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17
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Hapka M, Dranka M, Orłowska K, Chałasiński G, Szczęśniak MM, Zachara J. Noncovalent interactions determine the conformation of aurophilic complexes with 2-mercapto-4-methyl-5-thiazoleacetic acid ligands. Dalton Trans 2015; 44:13641-50. [DOI: 10.1039/c5dt01627d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of three new gold(i) salts is reported. The intermolecular interactions stabilizing the aurophilic dimers are examined by several first principles interpretative techniques.
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Affiliation(s)
| | - Maciej Dranka
- Warsaw University of Technology
- Faculty of Chemistry
- Department of Inorganic Chemistry and Solid State Technology
- 00-664 Warsaw
- Poland
| | - Katarzyna Orłowska
- Warsaw University of Technology
- Faculty of Chemistry
- Department of Inorganic Chemistry and Solid State Technology
- 00-664 Warsaw
- Poland
| | | | | | - Janusz Zachara
- Warsaw University of Technology
- Faculty of Chemistry
- Department of Inorganic Chemistry and Solid State Technology
- 00-664 Warsaw
- Poland
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18
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Naeem S, Serapian SA, Toscani A, White AJP, Hogarth G, Wilton-Ely JDET. Ring-Closing Metathesis and Nanoparticle Formation Based on Diallyldithiocarbamate Complexes of Gold(I): Synthetic, Structural, and Computational Studies. Inorg Chem 2014; 53:2404-16. [DOI: 10.1021/ic402048a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Saira Naeem
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Stefano A. Serapian
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Graeme Hogarth
- Department of Chemistry, University College London, 20 Gordon
Street, London WC1H 0AJ, U.K
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19
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Pourceau G, Valle-Carrandi LD, Di Gianvincenzo P, Michelena O, Penadés S. On the chiroptical properties of Au(i)–thiolate glycoconjugate precursors and their influence on sugar-protected gold nanoparticles (glyconanoparticles). RSC Adv 2014. [DOI: 10.1039/c4ra11741g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The structure of d/l sugar thiolate conjugates used in the preparation of Au(i)–thiolate polymers determines their chiroptical properties.
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Affiliation(s)
- Gwladys Pourceau
- Laboratory of GlycoNanotechnology
- Biofunctional Nanomaterials Unit
- CIC biomaGUNE
- Spain
| | | | | | - Olatz Michelena
- Laboratory of GlycoNanotechnology
- Biofunctional Nanomaterials Unit
- CIC biomaGUNE
- Spain
| | - Soledad Penadés
- Laboratory of GlycoNanotechnology
- Biofunctional Nanomaterials Unit
- CIC biomaGUNE
- Spain
- Networking Research Center on Bioengineering
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20
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Wang W, Han Y, Tian M, Fan Y, Tang Y, Gao M, Wang Y. Cationic gemini surfactant-assisted synthesis of hollow Au nanostructures by stepwise reductions. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5709-5716. [PMID: 23725038 DOI: 10.1021/am4011226] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel synthetic approach was developed for creating versatile hollow Au nanostructures by stepwise reductions of Au(III) upon the use of cationic gemini surfactant hexamethylene-1,6-bis(dodecyl dimethylammonium bromide) (C12C6C12Br2) as a template agent. It was observed that the Au(I) ions obtained from the reduction of Au(III) by ascorbic acid can assist the gemini surfactant to form vesicles, capsule-like, and tube-like aggregates that subsequently act as soft templates for hollow Au nanostructures upon further reduction of Au(I) to Au(0) by NaBH4. It was demonstrated that the combination of C12C6C12Br2 and Au(I) plays a key role in regulating the structure of the hollow precursors not only because C12C6C12Br2 has a stronger aggregation ability in comparison with its single chain counterpart but also because the electrostatic repulsion between head groups of C12C6C12Br2 is greatly weakened after Au(III) is converted to Au(I), which is in favor of the construction of vesicles, capsule-like, and tube-like aggregates. Compared with solid Au nanospheres, the resultant hollow nanostructures exhibit enhanced electrocatalytic activities in methanol oxidation, following the order of elongated nanocapsule > nanocapsule > nanosphere. Benefiting from balanced interactions between the gemini surfactant and Au(I), this soft-template method may present a facile and versatile approach for the controlled synthesis of Au nanostructures potentially useful for fuel cells and other Au nanodevices.
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Affiliation(s)
- Wentao Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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21
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Chevrier DM, Chatt A, Sham TK, Zhang P. A Comparative XAFS Study of Gold-thiolate Nanoparticles and Nanoclusters. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/430/1/012029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Christensen SL, Chatt A, Zhang P. Peptide-directed preparation and X-ray structural study of Au nanoparticles on titanium surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4894-4900. [PMID: 23560571 DOI: 10.1021/la4003466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report the peptide-directed preparation and X-ray structural study of biofunctionalized Au nanoparticles (NPs) deposited on Ti surfaces. Au NPs were prepared by reduction of Au(3+) compound onto HCl-refreshed Ti in the presence of thiol-functionalized small peptides. A modified extended X-ray absorption fine-structure (EXAFS) technique, equipped with a rotating-stage and glancing-angle setup, was able to more sensitively detect the structure and bonding of Au NPs on Ti with low surface coverage. It was found that the use of the tripeptide glutathione (GSH) results in smaller NP size when compared to N-(2-mercapto-propionyl) glycine (MPG), a pseudodipeptide, over a wide range of Au/peptide molar ratios (20:1, 10:1, 5:1, and 2:1). By varying the ligand concentration, the Au NP structure in both systems can be controlled, generating nanocrystals, nanoclusters, and Au-thiolate polymer, which is unique for substrate-supported NP synthesis. This work presents a facile preparation of Au-peptide nanoparticles on biocompatible surfaces, and illustrates the high sensitivity of this modified EXAFS technique for structural studies of substrate-supported nanoparticles with low coverage.
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23
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Shiers MJ, Leech R, Carmalt CJ, Parkin IP, Kenyon AJ. Self-assembled ultra-high aspect ratio silver nanochains. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:5227-5235. [PMID: 22865339 DOI: 10.1002/adma.201202005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Indexed: 06/01/2023]
Affiliation(s)
- Matthew J Shiers
- Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
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24
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Luo Z, Yuan X, Yu Y, Zhang Q, Leong DT, Lee JY, Xie J. From Aggregation-Induced Emission of Au(I)–Thiolate Complexes to Ultrabright Au(0)@Au(I)–Thiolate Core–Shell Nanoclusters. J Am Chem Soc 2012; 134:16662-70. [DOI: 10.1021/ja306199p] [Citation(s) in RCA: 1117] [Impact Index Per Article: 93.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zhentao Luo
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Xun Yuan
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Yue Yu
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Qingbo Zhang
- Department of Chemistry, Rice University, Houston, Texas 77251-1892, United
States
| | - David Tai Leong
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Jim Yang Lee
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
| | - Jianping Xie
- Department of Chemical and Biomolecular
Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
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25
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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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26
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Meng X, Liu Z, Zhu M, Jin R. Controlled reduction for size selective synthesis of thiolate-protected gold nanoclusters Aun(n = 20, 24, 39, 40). NANOSCALE RESEARCH LETTERS 2012; 7:277. [PMID: 22647455 PMCID: PMC3503687 DOI: 10.1186/1556-276x-7-277] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Accepted: 05/30/2012] [Indexed: 05/23/2023]
Abstract
This work presents a controlled reduction method for the selective synthesis of different sized gold nanoclusters protected by thiolate (SR = SC2H4Ph). Starting with Au(III) salt, all the syntheses of Aun(SR)m nanoclusters with (n, m) = (20, 16), (24, 20), (39, 29), and (40, 30) necessitate experimental conditions of slow stirring and slow reduction of Au(I) intermediate species. By controlling the reaction kinetics for the reduction of Au(I) into clusters by NaBH4, different sized gold nanoclusters are selectively obtained. Two factors are identified to be important for the selective growth of Au20, Au24, and Au39/40 nanoclusters, including the stirring speed of the Au(I) solution and the NaBH4 addition speed during the step of Au(I) reduction to clusters. When comparing with the synthesis of Au25(SC2H4Ph)18 nanoclusters, we further identified that the reduction degree of Au(I) by NaBH4 also plays an important role in controlling cluster size. Overall, our results demonstrate the feasibility of attaining new sizes of gold nanoclusters via a controlled reduction route.
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Affiliation(s)
- Xiangming Meng
- Department of Chemistry, Anhui University, Hefei, Anhui, 230026, People’s Republic of China
| | - Zhao Liu
- Department of Chemistry, Anhui University, Hefei, Anhui, 230026, People’s Republic of China
| | - Manzhou Zhu
- Department of Chemistry, Anhui University, Hefei, Anhui, 230026, People’s Republic of China
| | - Rongchao Jin
- Department of Chemistry, Anhui University, Hefei, Anhui, 230026, People’s Republic of China
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
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27
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Christensen SL, Chatt A, Zhang P. Biomolecule-coated metal nanoparticles on titanium. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2979-2985. [PMID: 22200112 DOI: 10.1021/la204398q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Immobilizations of nanoparticles and biomolecules on biocompatible substrates such as titanium are two promising approaches to bringing new functionalities to Ti-based biomaterials. Herein, we used a variety of X-ray spectroscopic techniques to study and better understand metal-thiolate interactions in biofunctionalized metal nanoparticle systems supported on Ti substrates. Using a facile one-step procedure, a series of Au nanoparticle samples with varied biomolecule coatings ((2-mercatopropionyl)glycine (MPG) and bovine serum albumin (BSA)) and biomolecule concentrations are prepared. Ag and Pd systems are also studied to observe change with varying metal composition. The structure and properties of these biomolecule-coated nanoparticles are investigated with scanning electron microscopy (SEM) and element-specific X-ray techniques, including extended X-ray absorption fine structure (Au L(3)-edge), X-ray absorption near-edge structure (Au L(3), Ag L(3), Pd L(3), and S K-edge), and X-ray photoelectron spectroscopy (Au 4f, Ag 3d, Pd 3d, and S 2p core level). It was found that, by comparison of SEM and X-ray spectroscopy results, the coating of metal nanoparticles with varying model biomolecule systems can have a significant effect on both surface coverage and organization. This work offers a facile chemical method for bio- and nanofunctionalization of Ti substrates as well as provides a physical picture of the structure and bonding of biocoated metal nanoparticles, which may lead to useful applications in orthopedics and biomedicine.
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Affiliation(s)
- Stephen L Christensen
- Department of Chemistry and Institute for Research in Materials, Dalhousie University, Halifax, NS B3M 4J3, Canada
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28
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Schmidbaur H, Schier A. Aurophilic interactions as a subject of current research: an up-date. Chem Soc Rev 2012; 41:370-412. [DOI: 10.1039/c1cs15182g] [Citation(s) in RCA: 862] [Impact Index Per Article: 71.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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29
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Qian H, Eckenhoff WT, Bier ME, Pintauer T, Jin R. Crystal structures of Au2 complex and Au25 nanocluster and mechanistic insight into the conversion of polydisperse nanoparticles into monodisperse Au25 nanoclusters. Inorg Chem 2011; 50:10735-9. [PMID: 21988284 DOI: 10.1021/ic2012292] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We previously reported a size-focusing conversion of polydisperse gold nanoparticles capped by phosphine into monodisperse [Au(25)(PPh(3))(10)(SC(2)H(4)Ph)(5)Cl(2)](2+) nanoclusters in the presence of phenylethylthiol. Herein, we have determined the crystal structure of [Au(25)(PPh(3))(10)(SC(2)H(4)Ph)(5)Cl(2)](2+) nanoclusters and also identified an important side-product-a Au(I) complex formed in the size focusing process. The [Au(25)(PPh(3))(10)(SC(2)H(4)Ph)(5)Cl(2)](2+) cluster features a vertex-sharing bi-icosahedral core, resembling a rod. The formula of the Au(I) complex is determined to be [Au(2)(PPh(3))(2)(SC(2)H(4)Ph)](+) by electrospray ionization (ESI) mass spectrometry, and its crystal structure (with SbF(6)(-) counterion) reveals Au-Au bridged by -SC(2)H(4)Ph and with terminal bonds to two PPh(3) ligands. Unlike previously reported [Au(2)(PR(3))(2)(SC(2)H(4)Ph)](+) complexes in the solid state, which exist as tetranuclear complexes (i.e., dimers of [Au(2)(PR(3))(2)(SC(2)H(4)Ph)](+) units) through a Au···Au aurophilic interaction, in our case we found that the [Au(2)(PPh(3))(2)(SC(2)H(4)Ph)](+) complex exists as a single entity, rather than being dimerized to form a tetranuclear complex. The observation of this Au(I) complex allows us to gain insight into the intriguing conversion process from polydisperse Au nanoparticles to monodisperse Au(25) nanoclusters.
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Affiliation(s)
- Huifeng Qian
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
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30
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Barngrover BM, Aikens CM. Incremental Binding Energies of Gold(I) and Silver(I) Thiolate Clusters. J Phys Chem A 2011; 115:11818-23. [DOI: 10.1021/jp2061893] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Brian M. Barngrover
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
| | - Christine M. Aikens
- Department of Chemistry, Kansas State University, Manhattan, Kansas 66506, United States
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31
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Wyatt MF. MALDI-TOFMS analysis of coordination and organometallic complexes: a nic(h)e area to work in. JOURNAL OF MASS SPECTROMETRY : JMS 2011; 46:712-719. [PMID: 21744419 DOI: 10.1002/jms.1957] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A mini-review of the characterisation of metal-containing compounds by matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOFMS) is presented. Organometallic and coordination compounds have many varied applications, most notably in industrial catalytic processes and also in the electronics and healthcare sectors. In general, the compounds discussed, be they small or large molecules, have a high percentage metal content, rather than simply containing 'a metal atom'. A brief history of the field is given, but the main scope over the last 5 years is covered in some detail. How MALDI-TOFMS compliments electrospray for metal-containing compounds is highlighted. Perspectives on recent advances, such as solvent-free and air/moisture-sensitive sample preparation, and potential future challenges and developments, such as nanomaterials and metallodrug/metallometabolite imaging, are given.
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Affiliation(s)
- Mark F Wyatt
- EPSRC National Mass Spectrometry Service Centre (NMSSC), Institute of Mass Spectrometry (IMS), College of Medicine, Swansea University, Singleton Park, Swansea SA2 8PP, UK.
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