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Sufyan SA, van Devener B, Perez P, Nigra MM. Electronic Tuning of Gold Nanoparticle Active Sites for Reduction Catalysis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:1210-1218. [PMID: 36580656 DOI: 10.1021/acsami.2c18786] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Electronic tuning of active sites in heterogeneous catalysis with organic ligands remains challenging since the ligands are often bound to the most active sites on the catalysts' surfaces. In this work, gold nanoparticles, which are on average less than 2 nm in diameter, are synthesized with strongly binding thiol and phosphine ligands and have measurable quantities of accessible sites on their surfaces in both cases. Triphenylphosphine (TPP) is used as the phosphine ligand, while triphenylmethyl mercaptan (TPMT) serves as the thiol ligand. Phosphines are chosen because they are electron-donating ligands when bound to Au, and thiols are selected because they are electron-withdrawing on the Au surface. X-ray photoelectron spectroscopy (XPS) results show differences in the Au 4f binding energies between the TPP- and TPMT-bound Au nanoparticles. Fourier transform infrared spectroscopy (FTIR) measurements of bound CO indicate that the TPP-bound Au nanoparticles are more electron-rich than the TPMT-bound Au nanoparticles. The number of binding sites on the surface is quantified using 2-naphthalenethiol titration experiments. It is observed that the number of binding sites on the thiol and phosphine-bound Au nanoparticles is similar in both cases. The Au nanoparticles are used for three different reactions: resazurin reduction, CO oxidation, and benzyl alcohol oxidation. For both CO oxidation and benzyl alcohol oxidation, which are performed with the ligands attached, TPP- and TPMT-bound nanoparticles are both catalytically active. However, for resazurin reduction, the TPMT-bound Au nanoparticles are not active, while the TPP-bound Au nanoparticles are catalytically active. These results illustrate that the catalytic activity can be tuned using bound organic ligands with different electronic properties for reduction reactions using Au nanoparticle catalysts.
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Affiliation(s)
- Sayed Abu Sufyan
- Department of Chemical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Brian van Devener
- Electron Microscopy and Surface Analysis Laboratory, University of Utah, Salt Lake City, Utah 84112, United States
| | - Paulo Perez
- Electron Microscopy and Surface Analysis Laboratory, University of Utah, Salt Lake City, Utah 84112, United States
| | - Michael M Nigra
- Department of Chemical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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2
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Sufyan SA, van Devener B, Nigra MM. Synthesis of Highly Accessible and Reactive Sites in Gold Nanoparticles Using Bound Bis(Diphenylphosphine) Ligands. Chemistry 2022; 28:e202202877. [PMID: 36122321 DOI: 10.1002/chem.202202877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Indexed: 12/29/2022]
Abstract
While bound organic ligands provide steric protection against aggregation for metallic nanoparticles in solution, they can block a large fraction of the surface atoms which are needed for binding in catalysis and sensing applications. In this work, highly accessible Au nanoparticles ligated with bis(diphenylphosphine) molecules are synthesized and characterized in solution. Characterization is performed using high angle annular dark field-scanning transmission electron microscopy (HAADF-STEM), ultraviolet-visible (UV-Vis) spectroscopy, and fluorescence chemisorption experiments. These synthesized nanoparticles are accessible to a 2-napthalenethiol (2-NT) probe molecule in solution. The highest 2-NT accessibility is observed when using 1,1-bis(diphenylphosphino)methane (dppm) ligand where 61 % of the total gold atoms are accessible. It is hypothesized that increasing the rigidity of the bis(diphenylphosphine) ligand increases the number of binding sites on the Au nanoparticles. These nanoparticles are catalytically active for resazurin reduction, and the resazurin reduction rate scales with the number of binding sites.
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Affiliation(s)
- Sayed Abu Sufyan
- Department of Chemical Engineering, University of Utah, Salt Lake City, Utah, 84112, USA
| | - Brian van Devener
- Electron Microscopy and Surface Analysis Laboratory, University of Utah, Salt Lake City, Utah, 84112, USA
| | - Michael M Nigra
- Department of Chemical Engineering, University of Utah, Salt Lake City, Utah, 84112, USA
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3
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Ajioka H, Komada M, Yao H. Mixed-ligand strategy for synthesizing water-soluble chiral gold clusters with phosphine ligands. Phys Chem Chem Phys 2022; 24:29223-29231. [PMID: 36445264 DOI: 10.1039/d2cp04021b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Water-soluble chiral metal clusters have drawn much attention by virtue of their fascinating physicochemical properties and potential biomedical applications, but currently, phosphine-protected Au clusters with both chirality and water-solubility are still very limited. In this article, we demonstrate a mixed-ligand strategy for the facile synthesis of atomically precise, water-soluble chiral Au clusters protected by phosphine alone. The clusters are obtained by the reduction of aurate ions in the presence of a phosphine mixture consisting of highly hydrophilic monophosphine (i.e., triphenylphosphine trisulfonate; TPPTS) and hydrophobic chiral diphosphine (i.e., S-Segphos or S-BINAP), both of which are commercially available. The clusters are size/composition-separated via gel electrophoresis, and notably, heptanuclear cluster Au7(S-Segphos)3(TPPTS)2 exhibits a large chiroptical activity with the maximum anisotropy factor (g-factor) of 4.7 × 10-3, one of the largest values in such Au clusters. Quantum chemical calculations for model Au7 cluster species suggest two important factors to obtain large chiroptical activity: (i) more than two axially-chiral diphosphine ligands, and (ii) the absence of configurational isomer averaging. Consequently, despite the experimental use of a mixture containing both chiral and achiral phosphines, a large chiroptical activity can be created in Au clusters with high water-solubility.
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Affiliation(s)
- Hiyori Ajioka
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan.
| | - Mayuko Komada
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan.
| | - Hiroshi Yao
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan.
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4
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Kapil N, Cardinale F, Weissenberger T, Trogadas P, Nijhuis TA, Nigra MM, Coppens MO. Gold nanoparticles with tailored size through ligand modification for catalytic applications. Chem Commun (Camb) 2021; 57:10775-10778. [PMID: 34586128 DOI: 10.1039/d1cc04165g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The active sites of catalysts can be tuned by using appropriate organic moieties. Here, we describe a facile approach to synthesise gold nanoparticles (AuNPs) using various Au(I) precursors. The core size of these AuNPs can be precisely tailored by varying the steric hindrance imposed by bound ligands. An interesting relationship is deduced that correlates the steric hindrance around the metal to the final size of the nanoparticles. The synthesised AuNPs are immobilised onto TS-1 zeolite (Au/TS-1) with minimal change in the final size of the AuNPs. The catalytic performance of Au/TS-1 catalyst is evaluated for the direct gas phase epoxidation of propylene with hydrogen and oxygen, an environmentally friendly route to produce propylene oxide. The results indicate that smaller AuNPs exhibit enhanced catalytic activity and selectivity. Furthermore, this synthetic approach is beneficial when tailored synthesis of gold nanoparticles of specific sizes is required.
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Affiliation(s)
- Nidhi Kapil
- Centre for Nature Inspired Engineering and Department of Chemical Engineering, University College London, London WC1E 7JE, UK.
| | - Fabio Cardinale
- Centre for Nature Inspired Engineering and Department of Chemical Engineering, University College London, London WC1E 7JE, UK.
| | - Tobias Weissenberger
- Centre for Nature Inspired Engineering and Department of Chemical Engineering, University College London, London WC1E 7JE, UK.
| | - Panagiotis Trogadas
- Centre for Nature Inspired Engineering and Department of Chemical Engineering, University College London, London WC1E 7JE, UK.
| | | | - Michael M Nigra
- Department of Chemical Engineering, University of Utah, Salt Lake City UT 84112, USA.
| | - Marc-Olivier Coppens
- Centre for Nature Inspired Engineering and Department of Chemical Engineering, University College London, London WC1E 7JE, UK.
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5
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Zhang B, Chen J, Cao Y, Chai OJH, Xie J. Ligand Design in Ligand-Protected Gold Nanoclusters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2004381. [PMID: 33511773 DOI: 10.1002/smll.202004381] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 11/04/2020] [Indexed: 06/12/2023]
Abstract
The design of surface ligands is crucial for ligand-protected gold nanoclusters (Au NCs). Besides providing good protection for Au NCs, the surface ligands also play the following two important roles: i) as the outermost layer of Au NCs, the ligands will directly interact with the exterior environment (e.g., solvents, molecules and cells) influencing Au NCs in various applications; and ii) the interfacial chemistry between ligands and gold atoms can determine the structures, as well as the physical and chemical properties of Au NCs. A delicate ligand design in Au NCs (or other metal NCs) needs to consider the covalent bonds between ligands and gold atoms (e.g., gold-sulfur (Au-S) and gold-phosphorus (Au-P) bond), the physics forces between ligands (e.g., hydrophobic and van der Waals forces), and the ionic forces between the functional groups of ligands (e.g., carboxylic (COOH) and amine group (NH2 )); which form the underlying chemistry and discussion focus of this review article. Here, detailed discussions on the effects of surface ligands (e.g., thiolate, phosphine, and alkynyl ligands; or hydrophobic and hydrophilic ligands) on the synthesis, structures, and properties of Au NCs; highlighting the design principles in the surface engineering of Au NCs for diverse emerging applications, are provided.
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Affiliation(s)
- Bihan Zhang
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, P. R. China
| | - Jishi Chen
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China
| | - Yitao Cao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Osburg Jin Huang Chai
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Jianping Xie
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, P. R. China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
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6
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N-Heterocyclic carbenes as “smart” gold nanoparticle stabilizers: State-of-the art and perspectives for biomedical applications. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121743] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Taira T, Yanagimoto T, Fouquet T, Sakai K, Sakai H, Imura T. Synthesis of an N-Heterocyclic Carbene-based Au(I) Coordinate Surfactant: Application for Alkyne Hydration Based on Au Nanoparticle Formation. J Oleo Sci 2020; 69:871-882. [PMID: 32641614 DOI: 10.5650/jos.ess20063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In this study, an N-heterocyclic carbene (NHC)-based metal coordinate surfactant (MCS), NHC-Au-MCS, in which the NHC framework afforded the bonding of the Au(I) at the linkage of the hydrophilic and hydrophobic moieties, was synthesized. The structure of NHC-Au-MCS was confirmed by 1H and 13C NMR spectroscopic measurements together with elemental analysis. Matrix-assisted laser desorption/ionization (MALDI), laser desorption/ionization (LDI), and electrospray ionization mass spectrometry (ESI-MS) indicated the distinct reactivity of NHC-Au-MCS, such as the exchange of Br to Cl and the formation of a cationic Au complex, where the two NHC ligands were coordinated to an Au(I) center upon laser activation. The surface tension and dynamic light scattering (DLS) measurements revealed that the coordination of Au(I) to NHC reduced the critical micelle concentration (CMC) of NHC-Au-MCS (1.3×10-5 M), which resulted in the formation of micelles at concentrations higher than the CMC in water. We also confirmed that the surface-active Au(I) complex of NHC-Au-MCS catalyzed the hydration of 1-dodecyne to 2-dodecanone in water in the absence of an organic solvent. On the basis of the detailed mechanistic investigations regarding the reactivity of NHC-Au-MCS, we revealed that NHC-Au-MCS partially translated into Au nanoparticles (AuNPs), which facilitated alkyne hydration. These mechanistic studies were supported by UV-vis measurements, transmission electron microscopy (TEM), and LDI-MS.
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Affiliation(s)
- Toshiaki Taira
- National Institute of Advanced Industrial Science and Technology (AIST)
| | | | - Thierry Fouquet
- National Institute of Advanced Industrial Science and Technology (AIST)
| | - Kenichi Sakai
- Faculty of Science and Technology, Tokyo University of Science
| | - Hideki Sakai
- Faculty of Science and Technology, Tokyo University of Science
| | - Tomohiro Imura
- National Institute of Advanced Industrial Science and Technology (AIST)
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8
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Clément M, Abdellah I, Martini C, Fossard F, Dragoe D, Remita H, Huc V, Lampre I. Gold(i)-silver(i)-calix[8]arene complexes, precursors of bimetallic alloyed Au-Ag nanoparticles. NANOSCALE ADVANCES 2020; 2:2768-2773. [PMID: 36132403 PMCID: PMC9418713 DOI: 10.1039/d0na00111b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/05/2020] [Indexed: 05/06/2023]
Abstract
In this paper, we report the first synthesis and characterisations of bimetallic gold(i)-silver(i) calix[8]arene complexes. We show that the radiolytic reduction of these complexes leads to the formation of small bimetallic nanoparticles with an alloyed structure, as evidenced by XPS, HR-TEM and STEM/HAADF-EDX measurements.
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Affiliation(s)
- Marie Clément
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR 8000 91405 Orsay France
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182 91405 Orsay France
| | - Ibrahim Abdellah
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182 91405 Orsay France
| | - Cyril Martini
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182 91405 Orsay France
| | - Frédéric Fossard
- Université Paris-Saclay, ONERA, CNRS, Laboratoire d'Etude des Microstructures 92322 Châtillon France
| | - Diana Dragoe
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182 91405 Orsay France
| | - Hynd Remita
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR 8000 91405 Orsay France
| | - Vincent Huc
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR 8182 91405 Orsay France
| | - Isabelle Lampre
- Université Paris-Saclay, CNRS, Institut de Chimie Physique, UMR 8000 91405 Orsay France
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9
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Alishahi N, Mohammadpoor‐Baltork I, Tangestaninejad S, Mirkhani V, Moghadam M, Kia R. Calixarene Based Ionic Liquid as an Efficient and Reusable Catalyst for One‐Pot Multicomponent Synthesis of Polysubstituted Pyridines and Bis‐pyridines. ChemistrySelect 2019. [DOI: 10.1002/slct.201900902] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Nasrin Alishahi
- Department of ChemistryCatalysis DivisionUniversity of Isfahan Isfahan 81746–73441 Iran
| | | | | | - Valiollah Mirkhani
- Department of ChemistryCatalysis DivisionUniversity of Isfahan Isfahan 81746–73441 Iran
| | - Majid Moghadam
- Department of ChemistryCatalysis DivisionUniversity of Isfahan Isfahan 81746–73441 Iran
| | - Reza Kia
- Chemistry DepartmentSharif University of Technology P.O. Box 11155–3516 Tehran Iran
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10
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Sowa S, Pietrusiewicz KM. Chemoselective Reduction of the P=O Bond in the Presence of P-O and P-N Bonds in Phosphonate and Phosphinate Derivatives. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801518] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sylwia Sowa
- Department of Organic Chemistry; University of Maria Curie-Sklodowska; Gliniana 33 St. 20-614 Lublin Poland
| | - K. Michał Pietrusiewicz
- Department of Organic Chemistry; University of Maria Curie-Sklodowska; Gliniana 33 St. 20-614 Lublin Poland
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11
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Wan T, Tang F, Yin Y, Zhang M, Choi MMF, Yang X. Size‐dependent electrophoretic migration and separation of water‐soluble gold nanoclusters by capillary electrophoresis. Electrophoresis 2019; 40:1345-1352. [PMID: 30680763 DOI: 10.1002/elps.201800347] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/29/2018] [Accepted: 01/21/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Ting Wan
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringChina West Normal University Nanchong P. R. China
| | - Fenglin Tang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringChina West Normal University Nanchong P. R. China
| | - Yanru Yin
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringChina West Normal University Nanchong P. R. China
| | - Maoxue Zhang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringChina West Normal University Nanchong P. R. China
| | - Martin M. F. Choi
- Department of ChemistryHong Kong Baptist University Hong Kong SAR P. R. China
| | - Xiupei Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringChina West Normal University Nanchong P. R. China
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12
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Aloui L, Elhabiri M, Platas-Iglesias C, Esteban-Gómez D, Abidi R, Chetcuti MJ. Synthesis and Characterization of Positively Charged tris
-Imidazolium Calix[6]arene Hosts for Anion Recognition. ChemistrySelect 2019. [DOI: 10.1002/slct.201803890] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lobna Aloui
- Equipe de Chimie Organométallique; CNRS-UMR 7042-LIMA, ECPM, Université de Strasbourg; 25 rue Becquerel 67000 Strasbourg France
- Laboratoire d'Applications de la Chimie aux Ressources et Substances Naturelles et l'Environnement, Faculté des sciences de Bizerte; Université de Carthage; 7021 Zarzouna Bizerte Tunisie
| | - Mourad Elhabiri
- Equipe de Chimie Bioorganique et Médicinale; CNRS-UMR 7042-LIMA, ECPM, Université de Strasbourg; 25 rue Becquerel 67000 Strasbourg France
| | - Carlos Platas-Iglesias
- Universidade da Coruña; Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Facultade de Ciencias; 15071 A Coruña, Galicia Spain
| | - David Esteban-Gómez
- Universidade da Coruña; Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Facultade de Ciencias; 15071 A Coruña, Galicia Spain
| | - Rym Abidi
- Laboratoire d'Applications de la Chimie aux Ressources et Substances Naturelles et l'Environnement, Faculté des sciences de Bizerte; Université de Carthage; 7021 Zarzouna Bizerte Tunisie
| | - Michael J. Chetcuti
- Equipe de Chimie Organométallique; CNRS-UMR 7042-LIMA, ECPM, Université de Strasbourg; 25 rue Becquerel 67000 Strasbourg France
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13
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An Y, Yu J, Han Y. Recent Advances in the Chemistry of
N
‐Heterocyclic‐Carbene‐Functionalized Metal‐Nanoparticles and Their Applications. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800450] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuan‐Yuan An
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University Xi'an Shaanxi 710127 China
| | - Jian‐Gang Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University Xi'an Shaanxi 710127 China
- College of Chemical and Material Engineering, Quzhou University Quzhou, Zhejiang 324000 China
| | - Ying‐Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University Xi'an Shaanxi 710127 China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou Fujian 350002 China
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14
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Nasaruddin RR, Chen T, Yan N, Xie J. Roles of thiolate ligands in the synthesis, properties and catalytic application of gold nanoclusters. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.04.016] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Osawa M, Aino MA, Nagakura T, Hoshino M, Tanaka Y, Akita M. Near-unity thermally activated delayed fluorescence efficiency in three- and four-coordinate Au(i) complexes with diphosphine ligands. Dalton Trans 2018; 47:8229-8239. [PMID: 29756141 DOI: 10.1039/c8dt01097h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The synthesis and photoluminescence properties of three-coordinate Au(i) complexes with rigid diphosphine ligands LMe {1,2-bis[bis(2-methylphenyl)phosphino]benzene}, LEt {1,2-bis[bis(2-ethylphenyl)phosphino]benzene}, and LiPr {1,2-bis[bis(2-isopropylphenyl)phosphino]benzene} are investigated. The LMe and LEt ligands afford two types of complexes: dinuclear complexes [μ-LMe(AuCl)2] (1d) and [μ-LEt(AuCl)2] (2d) with an Au(i)-Au(i) bond and mononuclear three-coordinate Au(i) complexes LMeAuCl (1) and LEtAuCl (2). On the other hand, the bulkiest ligand, LiPr, affords three-coordinate Au(i) complexes, LiPrAuCl (3) and LiPrAuI (4), but no dinuclear complexes. X-ray analysis suggests that both 3 and 4 possess a highly distorted trigonal planar geometry. Moreover, luminescence data reveal that at room temperature, 3 and 4 exhibit yellow-green thermally activated delayed fluorescence in the crystalline state with maximum emission wavelengths at 558 and 549 nm, respectively. The emission yields are close to unity. Quantum chemical calculations suggest that the emission of 4 originates from the (σ + X) → π* excited state that possesses strong intraligand charge-transfer character. The luminescent properties of four-coordinate Au(i) complex (5) possessing a tetrahedral geometry are discussed on the basis of the emission spectra and decay times measured in a temperature range of 309-77 K.
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Affiliation(s)
- Masahisa Osawa
- Department of Applied Chemistry, Nippon Institute of Technology, Gakuendai 4-1, Miyashiro-Machi, Saitama, 345-8501, Japan.
| | - Masa-Aki Aino
- Department of Applied Chemistry, Nippon Institute of Technology, Gakuendai 4-1, Miyashiro-Machi, Saitama, 345-8501, Japan.
| | - Takaki Nagakura
- Department of Applied Chemistry, Nippon Institute of Technology, Gakuendai 4-1, Miyashiro-Machi, Saitama, 345-8501, Japan.
| | - Mikio Hoshino
- Department of Applied Chemistry, Nippon Institute of Technology, Gakuendai 4-1, Miyashiro-Machi, Saitama, 345-8501, Japan.
| | - Yuya Tanaka
- Laboratory for Chemistry and Life Science Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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16
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Bridonneau N, Hippolyte L, Mercier D, Portehault D, Desage-El Murr M, Marcus P, Fensterbank L, Chanéac C, Ribot F. N-Heterocyclic carbene-stabilized gold nanoparticles with tunable sizes. Dalton Trans 2018; 47:6850-6859. [PMID: 29725678 DOI: 10.1039/c8dt00416a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and straightforward synthesis of N-heterocyclic carbene (NHC)-protected gold nanoparticles is derived from (benz)imidazolium-AuX4 complexes and NaBH4 only. The proposed method allows size tuning, from 3 to 6 nm, by adding (benz)imidazolium bromide. Changing the reducing agent to tBuNH2BH3 shifts the size range to ca. 6-12 nm. A one pot protocol is also reported from AuCl, (benz)imidazolium bromides and NaBH4, thereby providing an even more straightforward way of producing NHC-capped gold nanoparticles. In addition, X-ray photoelectron spectroscopy (XPS) is used to unambiguously evidence, on the nanoparticles, the covalent bond formed between the NHC and the surface gold atoms.
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Affiliation(s)
- N Bridonneau
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, F-75005 Paris, France.
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17
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Salorinne K, Man RWY, Li CH, Taki M, Nambo M, Crudden CM. Water-Soluble N-Heterocyclic Carbene-Protected Gold Nanoparticles: Size-Controlled Synthesis, Stability, and Optical Properties. Angew Chem Int Ed Engl 2017; 56:6198-6202. [PMID: 28407403 DOI: 10.1002/anie.201701605] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Indexed: 01/16/2023]
Abstract
NHC-AuI complexes were used to prepare stable, water-soluble, NHC-protected gold nanoparticles. The water-soluble, charged nature of the nanoparticles permitted analysis by polyacrylamide gel electrophoresis (PAGE), which showed that the nanoparticles were highly monodisperse, with tunable core diameters between 2.0 and 3.3 nm depending on the synthesis conditions. Temporal, thermal, and chemical stability of the nanoparticles were determined to be high. Treatment with thiols caused etching of the particles after 24 h; however larger plasmonic particles showed greater resistance to thiol treatment. These water-soluble, bio-compatible nanoparticles are promising candidates for use in photoacoustic imaging, with even the smallest nanoparticles giving reliable photoacoustic signals.
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Affiliation(s)
- Kirsi Salorinne
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Renee W Y Man
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Chien-Hung Li
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario, Canada
| | - Masayasu Taki
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Masakazu Nambo
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Cathleen M Crudden
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario, Canada
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18
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Salorinne K, Man RWY, Li CH, Taki M, Nambo M, Crudden CM. Water-Soluble N-Heterocyclic Carbene-Protected Gold Nanoparticles: Size-Controlled Synthesis, Stability, and Optical Properties. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701605] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kirsi Salorinne
- Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Renee W. Y. Man
- Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Chien-Hung Li
- Department of Chemistry; Queen's University; Chernoff Hall Kingston Ontario Canada
| | - Masayasu Taki
- Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Masakazu Nambo
- Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Cathleen M. Crudden
- Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
- Department of Chemistry; Queen's University; Chernoff Hall Kingston Ontario Canada
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19
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Li J, Nasaruddin RR, Feng Y, Yang J, Yan N, Xie J. Tuning the Accessibility and Activity of Au25
(SR)18
Nanocluster Catalysts through Ligand Engineering. Chemistry 2016; 22:14816-14820. [DOI: 10.1002/chem.201603247] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Indexed: 01/24/2023]
Affiliation(s)
- Jingguo Li
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore
| | - Ricca Rahman Nasaruddin
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore
| | - Yan Feng
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore
- State Key Laboratory of Multiphase Complex Systems; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Jun Yang
- State Key Laboratory of Multiphase Complex Systems; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Ning Yan
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering; National University of Singapore; 4 Engineering Drive 4 117585 Singapore
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20
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Trogadas P, Nigra MM, Coppens MO. Nature-inspired optimization of hierarchical porous media for catalytic and separation processes. NEW J CHEM 2016. [DOI: 10.1039/c5nj03406j] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nature-inspired structuring at the meso-scale: broad macropores separate the mesoporous catalyst grains.
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Affiliation(s)
- Panagiotis Trogadas
- Department of Chemical Engineering
- University College London
- Torrington Place
- London
- UK
| | - Michael M. Nigra
- Department of Chemical Engineering
- University College London
- Torrington Place
- London
- UK
| | - Marc-Olivier Coppens
- Department of Chemical Engineering
- University College London
- Torrington Place
- London
- UK
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21
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Zhukhovitskiy AV, MacLeod MJ, Johnson JA. Carbene Ligands in Surface Chemistry: From Stabilization of Discrete Elemental Allotropes to Modification of Nanoscale and Bulk Substrates. Chem Rev 2015; 115:11503-32. [DOI: 10.1021/acs.chemrev.5b00220] [Citation(s) in RCA: 223] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Aleksandr V. Zhukhovitskiy
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Michelle J. MacLeod
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Jeremiah A. Johnson
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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22
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Okrut A, Runnebaum RC, Ouyang X, Lu J, Aydin C, Hwang SJ, Zhang S, Olatunji-Ojo OA, Durkin KA, Dixon DA, Gates BC, Katz A. Selective molecular recognition by nanoscale environments in a supported iridium cluster catalyst. NATURE NANOTECHNOLOGY 2014; 9:459-465. [PMID: 24747837 DOI: 10.1038/nnano.2014.72] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 03/12/2014] [Indexed: 06/03/2023]
Abstract
The active sites of enzymes are contained within nanoscale environments that exhibit exquisite levels of specificity to particular molecules. The development of such nanoscale environments on synthetic surfaces, which would be capable of discriminating between molecules that would nominally bind in a similar way to the surface, could be of use in nanosensing, selective catalysis and gas separation. However, mimicking such subtle behaviour, even crudely, with a synthetic system remains a significant challenge. Here, we show that the reactive sites on the surface of a tetrairidium cluster can be controlled by using three calixarene-phosphine ligands to create a selective nanoscale environment at the metal surface. Each ligand is 1.4 nm in length and envelopes the cluster core in a manner that discriminates between the reactivities of the basal-plane and apical iridium atoms. CO ligands are initially present on the clusters and can be selectively removed from the basal-plane sites by thermal dissociation and from the apical sites by reactive decarbonylation with the bulky reactant trimethylamine-N-oxide. Both steps lead to the creation of metal sites that can bind CO molecules, but only the reactive decarbonylation step creates vacancies that are also able to bond to ethylene, and catalyse its hydrogenation.
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Affiliation(s)
- Alexander Okrut
- Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, USA
| | - Ron C Runnebaum
- Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, USA
| | - Xiaoying Ouyang
- Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, USA
| | - Jing Lu
- Department of Chemical Engineering and Materials Science, University of California at Davis, Davis, California 95616, USA
| | - Ceren Aydin
- Department of Chemical Engineering and Materials Science, University of California at Davis, Davis, California 95616, USA
| | - Son-Jong Hwang
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - Shengjie Zhang
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Olayinka A Olatunji-Ojo
- Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, USA
| | - Kathleen A Durkin
- Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, USA
| | - David A Dixon
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Bruce C Gates
- Department of Chemical Engineering and Materials Science, University of California at Davis, Davis, California 95616, USA
| | - Alexander Katz
- Department of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, USA
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