1
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Kolding KN, Bretlau M, Zhao S, Ceccato M, Torbensen K, Daasbjerg K, Rosas-Hernández A. NHC-CDI Ligands Boost Multicarbon Production in Electrocatalytic CO 2 Reduction by Increasing Accumulated Charged Intermediates and Promoting *CO Dimerization on Cu. J Am Chem Soc 2024; 146:13034-13045. [PMID: 38698544 DOI: 10.1021/jacs.3c14306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Copper-based materials exhibit significant potential as catalysts for electrochemical CO2 reduction, owing to their capacity to generate multicarbon hydrocarbons. The molecular functionalization of Cu electrodes represents a simple yet powerful strategy for improving the intrinsic activity of these materials by favoring specific reaction pathways through the creation of tailored microenvironments around the surface active sites. However, despite its success, comprehensive mechanistic insights derived from experimental techniques are often limited, leaving the active role of surface modifiers inconclusive. In this work, we show that N-heterocyclic carbene-carbodiimide-functionalized Cu catalysts display a remarkable activity for multicarbon product formation, surpassing bare Cu electrodes by more than an order of magnitude. These hybrid catalysts operate efficiently using an electrolyzer equipped with a gas diffusion electrode, achieving a multicarbon product selectivity of 58% with a partial current density of ca. -80 mA cm-2. We found that the activity for multicarbon product formation is closely linked to the surface charge that accumulates during electrocatalysis, stemming from surface intermediate buildup. Through X-ray photoelectron spectroscopy, we elucidated the role of the molecular additives in altering the electronic structure of the Cu electrodes, promoting the stabilization of surface CO. Additionally, in situ Raman measurements established the identity of the reaction intermediates that accumulate during electrocatalysis, indicating preferential CO binding on Cu step sites, known for facilitating C-C coupling. This study underscores the significant potential of molecular surface modifications in developing efficient electrocatalysts for CO2 reduction, highlighting surface charge as a pivotal descriptor of multicarbon product activity.
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Affiliation(s)
- Kirstine Nygaard Kolding
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
| | - Matias Bretlau
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
| | - Siqi Zhao
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
- Novo Nordisk Foundation (NNF) CO2 Research Center, Aarhus University, 8000 Aarhus C, Denmark
| | - Marcel Ceccato
- Department of Biological and Chemical Engineering, Aarhus University, 8200 Aarhus N, Denmark
| | - Kristian Torbensen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
- Novo Nordisk Foundation (NNF) CO2 Research Center, Aarhus University, 8000 Aarhus C, Denmark
| | - Kim Daasbjerg
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
- Novo Nordisk Foundation (NNF) CO2 Research Center, Aarhus University, 8000 Aarhus C, Denmark
| | - Alonso Rosas-Hernández
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
- Novo Nordisk Foundation (NNF) CO2 Research Center, Aarhus University, 8000 Aarhus C, Denmark
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2
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Pham LD, Smith-Sweetser RO, Krupinsky B, Dewey CE, Lamb JR. Switchable Organocatalysis from N-heterocyclic Carbene-Carbodiimide Adducts with Tunable Release Temperature. Angew Chem Int Ed Engl 2023; 62:e202314376. [PMID: 37824288 DOI: 10.1002/anie.202314376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/14/2023]
Abstract
N-Heterocyclic carbenes (NHCs) are powerful organocatalysts, but practical applications often require in situ generation from stable precursors that "mask" the NHC reactivity via reversible binding. Previously established "masks" are often simple small molecules, such that the NHC structure is used to control both catalytic activity and activation temperature, leading to undesirable tradeoffs. Herein, we show that NHC-carbodiimide (CDI) adducts can be masked precursors for switchable organocatalysis and that the CDI substituents can control the reaction profile without changing the NHC structure. Large electronic variations on the CDI (e.g., alkyl versus aryl) drastically change the catalytically active temperature, whereas smaller perturbations (e.g., different para-substituted phenyls) tune the catalyst release within a narrower window. This control was demonstrated for three classic NHC-catalyzed reactions, each influencing the NHC-CDI equilibrium in different ways. Our results introduce a new paradigm for controlling NHC organocatalysis as well as present practical considerations for designing appropriate masks for various reactions.
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Affiliation(s)
- Le Dung Pham
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
| | - Red O Smith-Sweetser
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
| | - Briana Krupinsky
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
| | - Carolyn E Dewey
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
| | - Jessica R Lamb
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, MN 55455, USA
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3
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Rahmani A, Sultanov MA, Kamiru-White K, Shultz-Johnson LR, Butkus BE, Xie S, Liu F, Nguyen DTH, Wilson-Faubert N, Nazemi A, Banerjee P, Zhai L, Delferro M, Wen J, Jurca T. Ultrathin Atomic Layer Deposited Al 2O 3 Overcoat Stabilizes Al 2O 3-Pt/Ni-Foam Hydrogenation Catalysts. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43756-43766. [PMID: 37695888 DOI: 10.1021/acsami.3c08545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Galvanic exchange seeds the growth of Pt nanostructures on the Ni foam monolith. Subsequent atomic layer deposition of ultrathin Al2O3 followed by annealing under air affords supported Pt catalysts with ultralow loading (0.020 ppm). In addition to the expected enhancement of the stability of the Pt particles on the surface, the ∼2 nm Al2O3 overcoat appears to also play a crucial role in the overall structural integrity of the NiOx nanoplates that grow on the Ni foam surface as a result of the preparative route. The resulting material is physically robust toward repeated handling and showcases retention of catalytic activity over 10 standard catalyst recycling trials, standing in marked contrast to the uncoated samples. Catalyst activity was tested via the hydrogenation of various functionalized styrenes at low temperatures and low hydrogen pressure in ethanol as a solvent, with a TOF as high as 9.5 × 106 h-1 for unfunctionalized styrene. Notably, the catalysts show excellent tolerance toward F, Cl, and Br substituents and no hydrogenation of the aromatic ring.
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Affiliation(s)
- Azina Rahmani
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | - Maksim A Sultanov
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Physics, Northern Illinois University, DeKalb, Illinois 60115, United States
| | - Kemah Kamiru-White
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
| | | | - Brian E Butkus
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida 32816, United States
| | - Shaohua Xie
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, Florida 32816, United States
| | - Fudong Liu
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, Florida 32816, United States
- NanoScience and Technology Center (NSTC), University of Central Florida, Orlando, Florida 32826, United States
- Renewable Energy and Chemical Transformation Faculty Cluster (REACT), University of Central Florida, Orlando, Florida 32816, United States
| | - Diep T H Nguyen
- Department of Chemistry, NanoQAM, Quebec Centre for Advanced Materials, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montréal, QC H3C 3P8, Canada
| | - Noémie Wilson-Faubert
- Department of Chemistry, NanoQAM, Quebec Centre for Advanced Materials, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montréal, QC H3C 3P8, Canada
| | - Ali Nazemi
- Department of Chemistry, NanoQAM, Quebec Centre for Advanced Materials, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, Montréal, QC H3C 3P8, Canada
| | - Parag Banerjee
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida 32816, United States
- NanoScience and Technology Center (NSTC), University of Central Florida, Orlando, Florida 32826, United States
- Renewable Energy and Chemical Transformation Faculty Cluster (REACT), University of Central Florida, Orlando, Florida 32816, United States
| | - Lei Zhai
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida 32816, United States
- NanoScience and Technology Center (NSTC), University of Central Florida, Orlando, Florida 32826, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jianguo Wen
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Titel Jurca
- Department of Chemistry, University of Central Florida, Orlando, Florida 32816, United States
- NanoScience and Technology Center (NSTC), University of Central Florida, Orlando, Florida 32826, United States
- Renewable Energy and Chemical Transformation Faculty Cluster (REACT), University of Central Florida, Orlando, Florida 32816, United States
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4
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Suárez-Riaño O, Mencia G, Tricard S, Esvan J, Fazzini PF, Chaudret B, Baquero EA. Water-soluble NHC Pd/Ni bimetallic nanoparticles for H/D exchange in aromatic amino-acids. Chem Commun (Camb) 2023; 59:1062-1065. [PMID: 36606591 DOI: 10.1039/d2cc06019a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Labelling of amino-acids is important for the production of deuterated proteins. However, aromatic amino-acid reduction is a common undesired process with noble-metal nanocatalysts. In this work, we describe a new NHC-stabilized water-soluble Pd/Ni system able to perform H/D exchange reactions in an enantiospecific fashion without reducing the aromatic ring of phenylalanine and tyrosine thanks to a synergetic Pd-Ni effect.
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Affiliation(s)
- Oscar Suárez-Riaño
- Estado Sólido y Catálisis Ambiental (ESCA), Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-03, 111321, Bogotá, Colombia.
| | - Gabriel Mencia
- LPCNO, Laboratoire de Physique et Chimie de Nano-Objets, UMR, 5215 INSA-CNRS-UPS, Institut National des Sciences Appliques 135, Avenue de Rangueil, 31077, Toulouse, France.
| | - Simon Tricard
- LPCNO, Laboratoire de Physique et Chimie de Nano-Objets, UMR, 5215 INSA-CNRS-UPS, Institut National des Sciences Appliques 135, Avenue de Rangueil, 31077, Toulouse, France.
| | - Jerome Esvan
- Institut Carnot - Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, INP-ENSIACET, CNRS, Université de Toulouse, 118 Route de Narbonne, 31062, Toulouse, France
| | - Pier-Francesco Fazzini
- LPCNO, Laboratoire de Physique et Chimie de Nano-Objets, UMR, 5215 INSA-CNRS-UPS, Institut National des Sciences Appliques 135, Avenue de Rangueil, 31077, Toulouse, France.
| | - Bruno Chaudret
- LPCNO, Laboratoire de Physique et Chimie de Nano-Objets, UMR, 5215 INSA-CNRS-UPS, Institut National des Sciences Appliques 135, Avenue de Rangueil, 31077, Toulouse, France.
| | - Edwin A Baquero
- Estado Sólido y Catálisis Ambiental (ESCA), Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-03, 111321, Bogotá, Colombia.
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5
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García-Zaragoza A, Cerezo-Navarrete C, Mollar-Cuni A, Oña-Burgos P, Mata JA, Corma A, Martínez-Prieto LM. Tailoring graphene-supported Ru nanoparticles by functionalization with pyrene-tagged N-heterocyclic carbenes. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02063c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Controlling the reactivity and stability of graphene-supported Ru NPs by modifying their surface with pyrene-tagged N-heterocyclic carbene ligands.
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Affiliation(s)
- Adrián García-Zaragoza
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Christian Cerezo-Navarrete
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Andrés Mollar-Cuni
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avda. Sos Baynat S/N 12006, Castellón, Spain
| | - Pascual Oña-Burgos
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Jose A. Mata
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avda. Sos Baynat S/N 12006, Castellón, Spain
| | - Avelino Corma
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Luis M. Martínez-Prieto
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
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6
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Gell L, Honkala K. Ligand assisted hydrogenation of levulinic acid on Pt(111) from first principles calculations. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02048j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we investigate the hydrogenation reaction of levulinic acid to 4-hydroxypentanovic acid on a ligand-modified Pt(111) using DFT. Modifying nanoparticle surfaces with ligands can have beneficial effects on...
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7
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Cerezo-Navarrete C, David AHG, García-Zaragoza A, Codesal MD, Oña-Burgos P, del Rosal I, Poteau R, Campaña AG, Martínez-Prieto LM. Ruthenium nanoparticles canopied by heptagon-containing saddle-shaped nanographenes as efficient aromatic hydrogenation catalysts. Chem Sci 2022; 13:13046-13059. [DOI: 10.1039/d2sc04228b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/15/2022] [Indexed: 11/21/2022] Open
Abstract
Ruthenium nanoparticles stabilized with non-planar polycyclic aromatic hydrocarbons (PAHs) are active catalysts in the hydrogenation of aromatic substrates under mild conditions.
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Affiliation(s)
- Christian Cerezo-Navarrete
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos 46022, Valencia, Spain
| | - Arthur H. G. David
- Departamento Química Orgánica, Universidad de Granada (UGR), C. U. Fuentenueva, 18071 Granada, Spain
| | - Adrián García-Zaragoza
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos 46022, Valencia, Spain
| | - Marcos D. Codesal
- Departamento Química Orgánica, Universidad de Granada (UGR), C. U. Fuentenueva, 18071 Granada, Spain
| | - Pascual Oña-Burgos
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos 46022, Valencia, Spain
| | - Iker del Rosal
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, INSA-CNRS (UMR 5215)-UPS, Institut National des Sciences Appliquées, 135, Avenue de Rangueil, F-31077 Toulouse, France
| | - Romuald Poteau
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, INSA-CNRS (UMR 5215)-UPS, Institut National des Sciences Appliquées, 135, Avenue de Rangueil, F-31077 Toulouse, France
| | - Araceli G. Campaña
- Departamento Química Orgánica, Universidad de Granada (UGR), C. U. Fuentenueva, 18071 Granada, Spain
| | - Luis M. Martínez-Prieto
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos 46022, Valencia, Spain
- Departamento de Química Inorgánica, Universidad de Sevilla (US) – IIQ, Instituto de Investigaciones Químicas (CSIC-US), Avda. Americo Vespucio 49, 41092 Seville, Spain
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8
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Sánchez-Roa D, Mosquera MEG, Cámpora J. NHC-CDI Betaine Adducts and Their Cationic Derivatives as Catalyst Precursors for Dichloromethane Valorization. J Org Chem 2021; 86:16725-16735. [PMID: 34724613 PMCID: PMC8650018 DOI: 10.1021/acs.joc.1c01971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Zwitterionic adducts
of N-heterocyclic carbene and carbodiimide
(NHC-CDI) are an emerging class of organic compounds with promising
properties for applications in various fields. Herein, we report the
use of the ICyCDI(p-Tol) betaine adduct (1a) and its cationic derivatives 2a and 3a as catalyst precursors for the dichloromethane valorization via
transformation into high added value products CH2Z2 (Z = OR, SR or NR2). This process implies selective
chloride substitution of dichloromethane by a range of nucleophiles
Na+Z– (preformed or generated in situ from HZ and an inorganic base) to yield formaldehyde-derived
acetals, dithioacetals, or aminals with full selectivity. The reactions
are conducted in a multigram-scale under very mild conditions, using
dichloromethane both as a reagent and solvent, and very low catalyst
loading (0.01 mol %). The CH2Z2 derivatives
were isolated in quantitative yields after filtration and evaporation,
which facilitates recycling the dichloromethane excess. Mechanistic
studies for the synthesis of methylal CH2(OMe)2 rule out organocatalysis as being responsible for the CH2 transfer, and a phase-transfer catalysis mechanism is proposed instead.
Furthermore, we observed that 1a and 2a react
with NaOMe to form unusual isoureate ethers, which are the actual
phase-transfer catalysts, with a strong preference for sodium over
other alkali metal nucleophiles.
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Affiliation(s)
- David Sánchez-Roa
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación en Química "Andrés M. del Río" (IQAR) Universidad de Alcalá, Campus Universitario, Alcala de Henares, Madrid 28871, Spain
| | - Marta E G Mosquera
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación en Química "Andrés M. del Río" (IQAR) Universidad de Alcalá, Campus Universitario, Alcala de Henares, Madrid 28871, Spain
| | - Juan Cámpora
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, C/Américo Vespucio, 49, Sevilla 41092, Spain
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9
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Shen H, Larsen MB, Roessler AG, Zimmerman PM, Boydston AJ. Mechanochemical Release of N-Heterocyclic Carbenes from Flex-Activated Mechanophores. Angew Chem Int Ed Engl 2021; 60:13559-13563. [PMID: 33826803 DOI: 10.1002/anie.202100576] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/25/2021] [Indexed: 11/09/2022]
Abstract
We have discovered a new flex-activated mechanophore that releases an N-heterocyclic carbene (NHC) under mechanical load. The mechanophore design is based upon NHC-carbodiimide (NHC-CDI) adducts and demonstrates an important first step toward flex-activated designs capable of further downstream reactivities. Since the flex-activation is non-destructive to the main polymer chains, the material can be subjected to multiple compression cycles to achieve iterative increases in the activation percentage of mechanophores. Two different NHC structures were demonstrated, signifying the potential modularity of the mechanophore design.
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Affiliation(s)
- Hang Shen
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA
| | - Michael B Larsen
- Department of Materials Science and Engineering, Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA.,Department of Chemistry, Western Washington University, Bellingham, WA, 98225, USA
| | - Allison G Roessler
- Department of Chemistry, University of Michigan, 930 N. University Ave, Ann Arbor, MI, 48109, USA.,Department of Chemistry, Oglethorpe University, 4484 Peachtree Rd, Atlanta, GA, 30319, USA
| | - Paul M Zimmerman
- Department of Chemistry, University of Michigan, 930 N. University Ave, Ann Arbor, MI, 48109, USA
| | - Andrew J Boydston
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53706, USA.,Department of Materials Science and Engineering, Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA.,Department of Chemistry, Western Washington University, Bellingham, WA, 98225, USA
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10
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Shen H, Larsen MB, Roessler AG, Zimmerman PM, Boydston AJ. Mechanochemical Release of
N
‐Heterocyclic Carbenes from Flex‐Activated Mechanophores. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hang Shen
- Department of Chemistry University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Michael B. Larsen
- Department of Materials Science and Engineering Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
- Department of Chemistry Western Washington University Bellingham WA 98225 USA
| | - Allison G. Roessler
- Department of Chemistry University of Michigan 930 N. University Ave Ann Arbor MI 48109 USA
- Department of Chemistry Oglethorpe University 4484 Peachtree Rd Atlanta GA 30319 USA
| | - Paul M. Zimmerman
- Department of Chemistry University of Michigan 930 N. University Ave Ann Arbor MI 48109 USA
| | - Andrew J. Boydston
- Department of Chemistry University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
- Department of Materials Science and Engineering Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
- Department of Chemistry Western Washington University Bellingham WA 98225 USA
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11
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Moraru IT, Martínez-Prieto LM, Coppel Y, Chaudret B, Cusinato L, Del Rosal I, Poteau R. A combined theoretical/experimental study highlighting the formation of carbides on Ru nanoparticles during CO hydrogenation. NANOSCALE 2021; 13:6902-6915. [PMID: 33885491 DOI: 10.1039/d0nr08735a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Formation of stable carbides during CO bond dissociation on small ruthenium nanoparticles (RuNPs) is demonstrated, both by means of DFT calculations and by solid state 13C NMR techniques. Theoretical calculations of chemical shifts in several model clusters are employed in order to secure experimental spectroscopic assignations for surface ruthenium carbides. Mechanistic DFT investigations, carried out on a realistic Ru55 nanoparticle model (∼1 nm) in terms of size, structure and surface composition, reveal that ruthenium carbides are obtained during CO hydrogenation. Calculations also indicate that carbide formation via hydrogen-assisted hydroxymethylidyne (COH) pathways is exothermic and occurs at reasonable kinetic cost on standard sites of the RuNPs, such as 4-fold ones on flat terraces, and not only in steps as previously suggested. Another novel outcome of the DFT mechanistic study consists of the possible formation of μ6 ruthenium carbides in the tip-B5 site, similar examples being known only for molecular ruthenium clusters. Moreover, based on DFT energies, the possible rearrangement of the surface metal atoms around the same tip-site results in a μ-Ru atom coordinated to the remaining RuNP moiety, reminiscent of a pseudo-octahedral metal center on the NP surface.
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Affiliation(s)
- Ionut-Tudor Moraru
- Université de Toulouse; INSA, UPS, CNRS; LPCNO (IRSAMC), 135 avenue de Rangueil, F-31077 Toulouse, France.
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12
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Contursi M, Coviello D, Ciriello R, Guerrieri A, Palmieri MA, Langerame F, Bianco G, Salvi AM. Surface and Electrochemical Characterization of a New Layered GC/Betaine/Pt Electrode and Investigation on its Performance as a Sensor for two B Complex Vitamins, B1 and B6: Preliminary Results. ELECTROANAL 2021. [DOI: 10.1002/elan.202060226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- M. Contursi
- University of Basilicata Science Department Potenza Italy
| | - D. Coviello
- University of Basilicata Science Department Potenza Italy
| | - R. Ciriello
- University of Basilicata Science Department Potenza Italy
| | - A. Guerrieri
- University of Basilicata Science Department Potenza Italy
| | - M. A. Palmieri
- University of Basilicata Science Department Potenza Italy
| | - F. Langerame
- University of Basilicata Science Department Potenza Italy
| | - G. Bianco
- University of Basilicata Science Department Potenza Italy
| | - A. M. Salvi
- University of Basilicata Science Department Potenza Italy
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Lamb JR, Brown CM, Johnson JA. N-Heterocyclic carbene-carbodiimide (NHC-CDI) betaine adducts: synthesis, characterization, properties, and applications. Chem Sci 2021; 12:2699-2715. [PMID: 34164037 PMCID: PMC8179359 DOI: 10.1039/d0sc06465c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/18/2021] [Indexed: 11/21/2022] Open
Abstract
N-Heterocyclic carbenes (NHCs) are an important class of reactive organic molecules used as ligands, organocatalysts, and σ-donors in a variety of electroneutral ylide or betaine adducts with main-group compounds. An emerging class of betaine adducts made from the reaction of NHCs with carbodiimides (CDIs) form zwitterionic amidinate-like structures with tunable properties based on the highly modular NHC and CDI scaffolds. The adduct stability is controlled by the substituents on the CDI nitrogens, while the NHC substituents greatly affect the configuration of the adduct in the solid state. This Perspective is intended as a primer to these adducts, touching on their history, synthesis, characterization, and general properties. Despite the infancy of the field, NHC-CDI adducts have been applied as amidinate-type ligands for transition metals and nanoparticles, as junctions in zwitterionic polymers, and to stabilize distonic radical cations. These applications and potential future directions are discussed.
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Affiliation(s)
- Jessica R Lamb
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
| | - Christopher M Brown
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
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14
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Rothermel N, Limbach HH, del Rosal I, Poteau R, Mencia G, Chaudret B, Buntkowsky G, Gutmann T. Surface reactions of ammonia on ruthenium nanoparticles revealed by 15N and 13C solid-state NMR. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02476g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ruthenium nanoparticles (Ru NPs) stabilized by bis-diphenylphosphinobutane (dppb) and surface-saturated with hydrogen have been exposed to gaseous 15NH3 and 13CO and studied using solid-state NMR and DFT calculations.
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Affiliation(s)
- Niels Rothermel
- Technical University of Darmstadt
- Institute of Inorganic and Physical Chemistry
- D-64287 Darmstadt
- Germany
| | - Hans-Heinrich Limbach
- Free Universität of Berlin
- Institute of Chemistry and Biochemistry
- D-14195 Berlin
- Germany
| | - Iker del Rosal
- LPCNO
- INSA-CNRS-UPS
- Institut National des Sciences Appliquées
- Université de Toulouse
- 31077 Toulouse
| | - Romuald Poteau
- LPCNO
- INSA-CNRS-UPS
- Institut National des Sciences Appliquées
- Université de Toulouse
- 31077 Toulouse
| | - Gabriel Mencia
- LPCNO
- INSA-CNRS-UPS
- Institut National des Sciences Appliquées
- Université de Toulouse
- 31077 Toulouse
| | - Bruno Chaudret
- LPCNO
- INSA-CNRS-UPS
- Institut National des Sciences Appliquées
- Université de Toulouse
- 31077 Toulouse
| | - Gerd Buntkowsky
- Technical University of Darmstadt
- Institute of Inorganic and Physical Chemistry
- D-64287 Darmstadt
- Germany
| | - Torsten Gutmann
- Technical University of Darmstadt
- Institute of Inorganic and Physical Chemistry
- D-64287 Darmstadt
- Germany
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15
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Belda Marín C, Fitzpatrick V, Kaplan DL, Landoulsi J, Guénin E, Egles C. Silk Polymers and Nanoparticles: A Powerful Combination for the Design of Versatile Biomaterials. Front Chem 2020; 8:604398. [PMID: 33335889 PMCID: PMC7736416 DOI: 10.3389/fchem.2020.604398] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 11/09/2020] [Indexed: 12/30/2022] Open
Abstract
Silk fibroin (SF) is a natural protein largely used in the textile industry but also in biomedicine, catalysis, and other materials applications. SF is biocompatible, biodegradable, and possesses high tensile strength. Moreover, it is a versatile compound that can be formed into different materials at the macro, micro- and nano-scales, such as nanofibers, nanoparticles, hydrogels, microspheres, and other formats. Silk can be further integrated into emerging and promising additive manufacturing techniques like bioprinting, stereolithography or digital light processing 3D printing. As such, the development of methodologies for the functionalization of silk materials provide added value. Inorganic nanoparticles (INPs) have interesting and unexpected properties differing from bulk materials. These properties include better catalysis efficiency (better surface/volume ratio and consequently decreased quantify of catalyst), antibacterial activity, fluorescence properties, and UV-radiation protection or superparamagnetic behavior depending on the metal used. Given the promising results and performance of INPs, their use in many different procedures has been growing. Therefore, combining the useful properties of silk fibroin materials with those from INPs is increasingly relevant in many applications. Two main methodologies have been used in the literature to form silk-based bionanocomposites: in situ synthesis of INPs in silk materials, or the addition of preformed INPs to silk materials. This work presents an overview of current silk nanocomposites developed by these two main methodologies. An evaluation of overall INP characteristics and their distribution within the material is presented for each approach. Finally, an outlook is provided about the potential applications of these resultant nanocomposite materials.
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Affiliation(s)
- Cristina Belda Marín
- Laboratory of Integrated Transformations of Renewable Matter (TIMR), Université de Technologie de Compiègne, ESCOM, Compiègne, France
- Laboratoire de réactivité de surface (UMR CNRS 7197), Sorbonne Université, Paris, France
| | - Vincent Fitzpatrick
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, United States
| | - Jessem Landoulsi
- Laboratoire de réactivité de surface (UMR CNRS 7197), Sorbonne Université, Paris, France
| | - Erwann Guénin
- Laboratory of Integrated Transformations of Renewable Matter (TIMR), Université de Technologie de Compiègne, ESCOM, Compiègne, France
| | - Christophe Egles
- Biomechanics and Bioengineering, CNRS, Université de Technologie de Compiègne, Compiègne, France
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16
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Palazzolo A, Naret T, Daniel-Bertrand M, Buisson DA, Tricard S, Lesot P, Coppel Y, Chaudret B, Feuillastre S, Pieters G. Tuning the Reactivity of a Heterogeneous Catalyst using N-Heterocyclic Carbene Ligands for C-H Activation Reactions. Angew Chem Int Ed Engl 2020; 59:20879-20884. [PMID: 32721061 DOI: 10.1002/anie.202009258] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Indexed: 12/14/2022]
Abstract
We report the dramatic impact of the addition of N-heterocyclic carbenes (NHCs) on the reactivity and selectivity of heterogeneous Ru catalysts in the context of C-H activation reactions. Using a simple and robust method, we prepared a series of new air-stable catalysts starting from commercially available Ru on carbon (Ru/C) and differently substituted NHCs. Associated with C-H deuteration processes, depending on Ru/C-NHC ratios, the chemical outcome can be controlled to a large extent. Indeed, tuning the reactivity of the Ru catalyst with NHC enabled: 1) increased chemoselectivity and the regioselectivity for the deuteration of alcohols in organic media; 2) the synthesis of fragile pharmaceutically relevant deuterated heterocycles (azine, purine) that are otherwise completely reduced using unmodified commercial catalysts; 3) the discovery of a novel reactivity for such heterogeneous Ru catalysts, namely the selective C-1 deuteration of aldehydes.
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Affiliation(s)
- Alberto Palazzolo
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191, Gif-sur-Yvette, France
| | - Timothée Naret
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191, Gif-sur-Yvette, France
| | - Marion Daniel-Bertrand
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191, Gif-sur-Yvette, France
| | - David-Alexandre Buisson
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191, Gif-sur-Yvette, France
| | - Simon Tricard
- LPCNO, Université de Toulouse, UMR 5215 INSA-CNRS-UPS, 135, Avenue de Rangueil, 31077, Toulouse, France
| | - Philippe Lesot
- ICMMO, RMN en Milieu Orienté, UMR CNRS 8182, Université Paris-Saclay, Bât. 410, 91405, Orsay cedex, France
| | - Yannick Coppel
- Laboratoire de Chimie de Coordination (LCC), CNRS, 205 route de Narbonne, BP44099, 31077, Toulouse Cedex 4, France
| | - Bruno Chaudret
- LPCNO, Université de Toulouse, UMR 5215 INSA-CNRS-UPS, 135, Avenue de Rangueil, 31077, Toulouse, France
| | - Sophie Feuillastre
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191, Gif-sur-Yvette, France
| | - Grégory Pieters
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191, Gif-sur-Yvette, France
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17
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Organometallic Nanoparticles Ligated by NHCs: Synthesis, Surface Chemistry and Ligand Effects. Catalysts 2020. [DOI: 10.3390/catal10101144] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Over the last 20 years, the use of metallic nanoparticles (MNPs) in catalysis has awakened a great interest in the scientific community, mainly due to the many advantages of this kind of nanostructures in catalytic applications. MNPs exhibit the characteristic stability of heterogeneous catalysts, but with a higher active surface area than conventional metallic materials. However, despite their higher activity, MNPs present a wide variety of active sites, which makes it difficult to control their selectivity in catalytic processes. An efficient way to modulate the activity/selectivity of MNPs is the use of coordinating ligands, which transforms the MNP surface, subsequently modifying the nanoparticle catalytic properties. In relation to this, the use of N-heterocyclic carbenes (NHC) as stabilizing ligands has demonstrated to be an effective tool to modify the size, stability, solubility and catalytic reactivity of MNPs. Although NHC-stabilized MNPs can be prepared by different synthetic methods, this review is centered on those prepared by an organometallic approach. Here, an organometallic precursor is decomposed under H2 in the presence of non-stoichiometric amounts of the corresponding NHC-ligand. The resulting organometallic nanoparticles present a clean surface, which makes them perfect candidates for catalytic applications and surface studies. In short, this revision study emphasizes the great versatility of NHC ligands as MNP stabilizers, as well as their influence on catalysis.
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18
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Palazzolo A, Naret T, Daniel‐Bertrand M, Buisson D, Tricard S, Lesot P, Coppel Y, Chaudret B, Feuillastre S, Pieters G. Tuning the Reactivity of a Heterogeneous Catalyst using N‐Heterocyclic Carbene Ligands for C−H Activation Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Alberto Palazzolo
- Université Paris-Saclay, CEA, INRAE Département Médicaments et Technologies pour la Santé (DMTS), SCBM 91191 Gif-sur-Yvette France
| | - Timothée Naret
- Université Paris-Saclay, CEA, INRAE Département Médicaments et Technologies pour la Santé (DMTS), SCBM 91191 Gif-sur-Yvette France
| | - Marion Daniel‐Bertrand
- Université Paris-Saclay, CEA, INRAE Département Médicaments et Technologies pour la Santé (DMTS), SCBM 91191 Gif-sur-Yvette France
| | - David‐Alexandre Buisson
- Université Paris-Saclay, CEA, INRAE Département Médicaments et Technologies pour la Santé (DMTS), SCBM 91191 Gif-sur-Yvette France
| | - Simon Tricard
- LPCNO Université de Toulouse, UMR 5215 INSA-CNRS-UPS 135, Avenue de Rangueil 31077 Toulouse France
| | - Philippe Lesot
- ICMMO RMN en Milieu Orienté, UMR CNRS 8182 Université Paris-Saclay Bât. 410 91405 Orsay cedex France
| | - Yannick Coppel
- Laboratoire de Chimie de Coordination (LCC) CNRS 205 route de Narbonne, BP44099 31077 Toulouse Cedex 4 France
| | - Bruno Chaudret
- LPCNO Université de Toulouse, UMR 5215 INSA-CNRS-UPS 135, Avenue de Rangueil 31077 Toulouse France
| | - Sophie Feuillastre
- Université Paris-Saclay, CEA, INRAE Département Médicaments et Technologies pour la Santé (DMTS), SCBM 91191 Gif-sur-Yvette France
| | - Grégory Pieters
- Université Paris-Saclay, CEA, INRAE Département Médicaments et Technologies pour la Santé (DMTS), SCBM 91191 Gif-sur-Yvette France
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19
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Moraes LC, Figueiredo RC, Espinós JP, Vattier F, Franconetti A, Jaime C, Lacroix B, Rojo J, Lara P, Conejero S. Platinum nanoparticles stabilized by N-heterocyclic thiones. Synthesis and catalytic activity in mono- and di-hydroboration of alkynes. NANOSCALE 2020; 12:6821-6831. [PMID: 32182323 DOI: 10.1039/d0nr00251h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
N-Heterocyclic Thiones (NHT) proved to be efficient ligands for the stabilization of small platinum nanoparticles (1.3-1.7 nm), synthesized by decomposition of [Pt(dba)2], under a H2 atmosphere, in the presence of variable sub-stoichiometric amounts of the NHT. Full characterization by means of TEM, HR-TEM, NMR, ICP, TGA and XPS have been carried out, providing information about the nature of the metal nanoparticles and the interaction of the NHT ligands to the metal surface. Importantly, DFT calculations indicate that some NHT ligands interact with the metal through the C[double bond, length as m-dash]C double bond of the imidazole fragment in addition to the sulfur atom, thus providing additional stabilization to the nanoparticles. According to XPS, TGA and ICP techniques, the surface coverage by the ligand increases by decreasing the size of the substituents on the nitrogen atom. The platinum nanoparticles have been used as catalyst in the hydroboration of alkynes. The most active system is that with a less covered surface area lacking an interaction of the ligand by means of the C[double bond, length as m-dash]C double bond. This catalyst hydroborates alkynes with excellent selectivities towards the monoborylated anti-Markovnikov product (vinyl-boronate) when one equiv. of borane is used. Very interestingly, aliphatic alkynes undergo a second hydroborylation process leading to the corresponding 1,1- and 1,2-diboroylated species with good selectivities towards the former.
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Affiliation(s)
- Leonardo C Moraes
- Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, C/Américo Vespucio 49, 41092, Seville, Spain.
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20
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Iridium Nanoparticles for Hydrogenation Reactions. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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López-Vinasco AM, Martínez-Prieto LM, Asensio JM, Lecante P, Chaudret B, Cámpora J, van Leeuwen PWNM. Novel nickel nanoparticles stabilized by imidazolium-amidinate ligands for selective hydrogenation of alkynes. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02172h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel magnetically recoverable nickel nanoparticles (Ni NPs) stabilized by imidazolium-amidinate ligands selectively hydrogenate alkynes into (Z)-alkenes under mild conditions.
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Affiliation(s)
- Angela M. López-Vinasco
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut National des Sciences Appliquées-Toulouse
- F-31077 Toulouse
- France
| | - Luis M. Martínez-Prieto
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut National des Sciences Appliquées-Toulouse
- F-31077 Toulouse
- France
| | - Juan M. Asensio
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut National des Sciences Appliquées-Toulouse
- F-31077 Toulouse
- France
| | - Pierre Lecante
- CEMES (Centre d'Elaboration de Matériaux et d'Etudes Structurales)
- CNRS
- F-31055 Toulouse
- France
| | - Bruno Chaudret
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut National des Sciences Appliquées-Toulouse
- F-31077 Toulouse
- France
| | - Juan Cámpora
- IIQ, Instituto de Investigaciones Químicas
- CSIC-Universidad de Sevilla
- 41092 Sevilla
- Spain
| | - Piet W. N. M. van Leeuwen
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets
- UMR5215 INSA-CNRS-UPS
- Institut National des Sciences Appliquées-Toulouse
- F-31077 Toulouse
- France
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22
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Bouzouita D, Lippens G, Baquero EA, Fazzini PF, Pieters G, Coppel Y, Lecante P, Tricard S, Martínez-Prieto LM, Chaudret B. Tuning the catalytic activity and selectivity of water-soluble bimetallic RuPt nanoparticles by modifying their surface metal distribution. NANOSCALE 2019; 11:16544-16552. [PMID: 31455954 DOI: 10.1039/c9nr04149d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bimetallic ruthenium-platinum nanoparticles (RuPt NPs) of different surface distributions and stabilized by using a sulfonated N-heterocyclic carbene ligand (1-(2,6-diisopropylphenyl)-3-(3-potassium sulfonatopropyl)-imidazol-2-ylidene) were prepared from Ru(COD)(COT) (COD = cyclooctadiene and COT = cyclooctatriene), and platinum precursors having various decomposition rates (Pt(NBE)3, NBE = norbornene, Pt(CH3)2(COD) and Pt2(DBA)3, DBA = dibenzylideneacetone). Structural and surface studies by FT-IR and solid-state MAS NMR, using carbon monoxide as a probe molecule, revealed the presence of different structures and surface compositions for different nanoparticles of similar sizes, which principally depend on the decomposition rate of the organometallic precursors used during the synthesis. Specifically, the slower the decomposition rate of the platinum precursor, the higher the number of Pt atoms at the NP surface. The different bimetallic RuPt NPs, as well as their monometallic equivalents (Pt and Ru NPs), were used in isotopic H/D exchange through C-H activation on l-lysine. Interestingly, the activity and selectivity of the direct C-H deuteration were dependent on the NP surface composition at the α position but not on that at the ε position. Chemical shift perturbation (CSP) experiments revealed that the difference in reactivity at the α position is due to a Pt-carboxylate interaction, which hinders the H/D exchange.
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Affiliation(s)
- Donia Bouzouita
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, INSA, CNRS, UPS, Université de Toulouse, 135, Avenue de Rangueil, F-31077 Toulouse, France.
| | - Guy Lippens
- LISBP, Université de Toulouse, CNRS, INRA, INSA, UPS 135 avenue de Rangueil, F-31077 Toulouse, France
| | - Edwin A Baquero
- Departamento de Química, Facultad de Ciencias Universidad Nacional de Colombia, Sede Bogotá Carrera 30 No. 45-03, 111321, Bogotá, Colombia
| | - Pier F Fazzini
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, INSA, CNRS, UPS, Université de Toulouse, 135, Avenue de Rangueil, F-31077 Toulouse, France.
| | - Gregory Pieters
- SCBM, CEA, Univ. Paris Saclay, F-91191, Gif-sur-Yvette, France
| | - Yannick Coppel
- CNRS, LCC (Laboratoire de Chimie de Coordination), Université de Toulouse, UPS, INPT, 205 route de Narbonne, BP 44099, F-31077-Toulouse Cedex 4, France
| | - Pierre Lecante
- CEMES (Centre d'Elaboration de Matériaux et d'Etudes Structurales), CNRS, 29 Rue J. Marvig, F-31055 Toulouse, France
| | - Simon Tricard
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, INSA, CNRS, UPS, Université de Toulouse, 135, Avenue de Rangueil, F-31077 Toulouse, France.
| | - Luis M Martínez-Prieto
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, INSA, CNRS, UPS, Université de Toulouse, 135, Avenue de Rangueil, F-31077 Toulouse, France.
| | - Bruno Chaudret
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, INSA, CNRS, UPS, Université de Toulouse, 135, Avenue de Rangueil, F-31077 Toulouse, France.
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23
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DFT calculations in periodic boundary conditions of gas-phase acidities and of transition-metal anionic clusters: case study with carboxylate-stabilized ruthenium clusters. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2484-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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González-Gómez R, Cusinato L, Bijani C, Coppel Y, Lecante P, Amiens C, Del Rosal I, Philippot K, Poteau R. Carboxylic acid-capped ruthenium nanoparticles: experimental and theoretical case study with ethanoic acid. NANOSCALE 2019; 11:9392-9409. [PMID: 31038521 DOI: 10.1039/c9nr00391f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Given that the properties of metal nanoparticles (NPs) depend on several parameters (namely, morphology, size, surface composition, crystalline structure, etc.), a computational model that brings a better understanding of a structure-property relationship at the nanoscale is a significant plus in order to explain the surface properties of metal NPs and also their catalytic viability, in particular, when envisaging a new stabilizing agent. In this study we combined experimental and theoretical tools to obtain a mapping of the surface of ruthenium NPs stabilized by ethanoic acid as a new capping ligand. For this purpose, the organometallic approach was applied as the synthesis method. The morphology and crystalline structure of the obtained particles was characterized by state-of-the art techniques (TEM, HRTEM, WAXS) and their surface composition was determined by various techniques (solution and solid-state NMR, IR, chemical titration, DFT calculations). DFT calculations of the vibrational features of model NPs and of the chemical shifts of model clusters allowed us to secure the spectroscopic experimental assignations. Spectroscopic data as well as DFT mechanistic studies showed that ethanoic acid lies on the metal surface as ethanoate, together with hydrogen atoms. The optimal surface composition determined by DFT calculations appeared to be ca. [0.4-0.6] H/Rusurf and 0.4 ethanoate/RuSurf, which was corroborated by experimental results. Moreover, for such a composition, a hydrogen adsorption Gibbs free energy in the range -2.0 to -3.0 kcal mol-1 was calculated, which makes these ruthenium NPs a promising nanocatalyst for the hydrogen evolution reaction in the electrolysis of water.
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Affiliation(s)
- Roberto González-Gómez
- LPCNO (IRSAMC), Université de Toulouse, INSA, UPS, CNRS (UMR 5215), Institut National des Sciences -Appliquées, 135 avenue de Rangueil, F-31077 Toulouse, France.
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25
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Shen H, Li Y, Shi Z. A Novel Graphdiyne-Based Catalyst for Effective Hydrogenation Reaction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:2563-2570. [PMID: 29470043 DOI: 10.1021/acsami.8b00566] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The platinum nanoparticles (Pt NPs) hybrided with nanostructured carbon materials with high stability are important for catalyzing hydrogenation reaction. Here we reported the fabrication of ultrastable Pt NPs anchored on graphdiyne, in which the strong interactions induced by the porous graphdiyne can prevent the thermal migration of Pt nanoparticles on the graphdiyne surface, exploiting the strong charge transfer interactions from Pt NPs to GDY substrate to tune the electron density of Pt NPs. Pt NPs catalyst with size of 2-3 nm showed high performance on hydrogenation of aldehydes and ketones to the corresponding alcohols compared with commercial Pt-C. Our results indicated that graphdiyne is a promising substrate for constructing metal nanoparticle-based heterogeneous catalysts, especially for those requiring strong interactions between metal nanoparticles and reactants.
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Affiliation(s)
- Han Shen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , 88 Wenhuadonglu Road , Jinan 250014 , P. R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Organic Solids, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Yongjun Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Organic Solids, Institute of Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences , Chinese Academy of Sciences , Beijing 100190 , P. R. China
- School of Chemistry and Chemical Engineering , University of Chinese Academy of Sciences , Beijing 100049 , PR China
| | - Zhiqiang Shi
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong , Shandong Normal University , 88 Wenhuadonglu Road , Jinan 250014 , P. R. China
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26
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Ortuño MA, López N. Reaction mechanisms at the homogeneous–heterogeneous frontier: insights from first-principles studies on ligand-decorated metal nanoparticles. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01351b] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The frontiers between homogeneous and heterogeneous catalysis are progressively disappearing.
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Affiliation(s)
- Manuel A. Ortuño
- Institute of Chemical Research of Catalonia (ICIQ)
- Barcelona Institute of Science and Technology (BIST)
- 43007 Tarragona
- Spain
| | - Núria López
- Institute of Chemical Research of Catalonia (ICIQ)
- Barcelona Institute of Science and Technology (BIST)
- 43007 Tarragona
- Spain
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27
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Rathnayaka SC, Lindeman SV, Mankad NP. Multinuclear Cu(I) Clusters Featuring a New Triply Bridging Coordination Mode of Phosphaamidinate Ligands. Inorg Chem 2018; 57:9439-9445. [PMID: 30003779 DOI: 10.1021/acs.inorgchem.8b01422] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Phosphabenzamidine [mes-NH-C(Ph)═P-mes) (1) and phosphaformamidine (mes-NH-CH═P-mes) (4) ligands have been synthesized and characterized. The conjugate bases of 1 and 4 coordinate by each bridging three Cu(I) ions, forming hexa- and tetranuclear clusters Cu6[mes-N═C(Ph)-P-mes]3Cl4Li(THF)2 (3) and Cu4[mes-N═CH-P-mes]4 (5), respectively. Both clusters have been fully characterized using 1H NMR, 31P NMR, and X-ray crystallography. Complexes 3 and 5 exhibit a previously unknown coordination mode of phosphaamidinates, which are far less studied than their well-known amidinate counterparts.
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Affiliation(s)
- Suresh C Rathnayaka
- Department of Chemistry , University of Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
| | - Sergey V Lindeman
- Department of Chemistry , Marquette University , 1414 W. Clybourn Street , Milwaukee , Wisconsin 53233 , United States
| | - Neal P Mankad
- Department of Chemistry , University of Illinois at Chicago , 845 West Taylor Street , Chicago , Illinois 60607 , United States
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28
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Ortuño MA, López N. Creating Cavities at Palladium–Phosphine Interfaces for Enhanced Selectivity in Heterogeneous Biomass Conversion. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01302] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Manuel A. Ortuño
- Institute of Chemical Research of Catalonia, ICIQ, and the Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Núria López
- Institute of Chemical Research of Catalonia, ICIQ, and the Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
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29
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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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30
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Meléndez DO, Lara-Sánchez A, Martínez J, Wu X, Otero A, Castro-Osma JA, North M, Rojas RS. Amidinate Aluminium Complexes as Catalysts for Carbon Dioxide Fixation into Cyclic Carbonates. ChemCatChem 2018. [DOI: 10.1002/cctc.201702014] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Danay Osorio Meléndez
- Nucleus Millennium Chemical Processes and Catalysis (CPC); Laboratorio de Química Inorgánica; Facultad de Química; Universidad Católica de Chile; Casilla 306 Santiago-22 6094411 Chile
| | - Agustín Lara-Sánchez
- Departamento de Química Inorgánica, Orgánica y Bioquímica; Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias y Tecnologías Químicas; Universidad de Castilla-La Mancha; Campus Universitario 13071- Ciudad Real Spain
| | - Javier Martínez
- Departamento de Química Inorgánica, Orgánica y Bioquímica; Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias y Tecnologías Químicas; Universidad de Castilla-La Mancha; Campus Universitario 13071- Ciudad Real Spain
| | - Xiao Wu
- Green Chemistry Centre of Excellence; Department of Chemistry; The University of York; York YO10 5DD UK
| | - Antonio Otero
- Departamento de Química Inorgánica, Orgánica y Bioquímica; Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Ciencias y Tecnologías Químicas; Universidad de Castilla-La Mancha; Campus Universitario 13071- Ciudad Real Spain
| | - José A. Castro-Osma
- Departamento de Química Inorgánica, Orgánica y Bioquímica; Centro de Innovación en Química Avanzada (ORFEO-CINQA); Facultad de Farmacia; Universidad de Castilla-La Mancha; 02071- Albacete Spain
| | - Michael North
- Green Chemistry Centre of Excellence; Department of Chemistry; The University of York; York YO10 5DD UK
| | - René S. Rojas
- Nucleus Millennium Chemical Processes and Catalysis (CPC); Laboratorio de Química Inorgánica; Facultad de Química; Universidad Católica de Chile; Casilla 306 Santiago-22 6094411 Chile
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31
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Martínez-Prieto LM, Baquero EA, Pieters G, Flores JC, de Jesús E, Nayral C, Delpech F, van Leeuwen PWNM, Lippens G, Chaudret B. Monitoring of nanoparticle reactivity in solution: interaction of l-lysine and Ru nanoparticles probed by chemical shift perturbation parallels regioselective H/D exchange. Chem Commun (Camb) 2018; 53:5850-5853. [PMID: 28504805 DOI: 10.1039/c7cc02445b] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Thanks to new water-soluble Ru nanoparticles (NPs) stabilized by sulfonated NHC ligands, we demonstrate that it is possible to monitor the catalyst/substrate interaction using NMR chemical shift perturbations (CSPs), under conditions that closely resemble those applied during the enantiospecific C-H deuteration of l-lysine. Correlating the pH dependence of the interaction of l-lysine with the surface of the RuNPs and its subsequent deuteration, our study underscores the importance of oriented binding to the surface as a critical factor for H/D exchange.
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Affiliation(s)
- Luis M Martínez-Prieto
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS-UPS, Institut des Sciences appliquées, 135, Avenue de Rangueil, F-31077 Toulouse, France.
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32
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Martínez-Prieto LM, Chaudret B. Organometallic Ruthenium Nanoparticles: Synthesis, Surface Chemistry, and Insights into Ligand Coordination. Acc Chem Res 2018; 51:376-384. [PMID: 29308876 DOI: 10.1021/acs.accounts.7b00378] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although there has been for the past 20 years great interest in the synthesis and use of metal nanoparticles, little attention has been paid to the complexity of the surface of these species. In particular, the different aspects concerning the ligands present, their location, their mode of binding, and their dynamics have been little studied. Our group has started in the early 1990s an investigation of the surface coordination chemistry of ruthenium and platinum nanoparticles but at that time with a lack of adequate techniques to fulfill our ambition. Over 10 years later, we went back to this problem and could obtain a more precise vision of the surface species. This Account is centered on ruthenium chemistry. This metal has been the most studied in our group, first thanks to the availability of a precursor, Ru(cyclooctadiene)(cyclooctatriene) (Ru(COD)(COT)), which possesses the ability to decompose in very mild conditions without leaving residues on the resulting nanoparticles and second because of the absence of magnetic perturbations (Knight shift, paramagnetism, ferromagnetism, etc.), which has allowed the use of solution and solid state NMR. In this respect, it has been possible to evidence the presence of a high concentration of hydrides on the surface of these particles, to study their dynamics, and to show that since the polarity of the Ru-H bond is similar to that of the C-H bond, a Ru/H NP would behave as a big lipophilic entity. The second point was to characterize the coordination of ancillary ligands. This has been achieved for different ligands, in particular phosphines and carbenes, which made possible the study of the modification of NP reactivity induced by surface ligands. This led to the conclusion that the presence of surface ligands can benefit both the activity of NP catalysts and their selectivity. If it was expected that the selectivity could be modulated, the promoting effect from the presence of ligands on, for example, arene or CO hydrogenation was totally unexpected. Playing with poison atoms (Sn, Fe, etc.) or ligands (CO) may allow us to play with the reactivity of the NPs to make them more selective for selected reactions. Finally, the search for specific ligands for nanoparticles is still in its infancy, but some examples have been found as have specific reactions of nanoparticles. Obviously arene hydrogenation and CO hydrogenation were well-known in heterogeneous catalysis, but we could demonstrate that they can be carried out in very mild conditions on ligand stabilized RuNPs. On the other hand, the enantiospecific C-H activation leading to enantioselective labeling of large organic or biomolecules or the C-C bond cleavage in mild conditions were both unexpected. There is still much work to perform for reaching the degree of control on nanoparticles that is presently achieved in organometallic molecular chemistry, but this work shows that it is possible.
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Affiliation(s)
- Luis M. Martínez-Prieto
- LPCNO, Université de Toulouse, CNRS, INSA, UPS, 135, Avenue de Rangueil, 31077 Toulouse, France
| | - Bruno Chaudret
- LPCNO, Université de Toulouse, CNRS, INSA, UPS, 135, Avenue de Rangueil, 31077 Toulouse, France
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33
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Sánchez-Roa D, Santiago TG, Fernández-Millán M, Cuenca T, Palma P, Cámpora J, Mosquera MEG. Interaction of an imidazolium-2-amidinate (NHC-CDI) zwitterion with zinc dichloride in dichloromethane: role as ligands and C–Cl activation promoters. Chem Commun (Camb) 2018; 54:12586-12589. [DOI: 10.1039/c8cc07661h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Investigation of the interaction of a NHC-CDI zwitterion with ZnCl2 in dichloromethane led to the serendipitous discovery of a highly selective, double C–Cl activation of dichloromethane.
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Affiliation(s)
- David Sánchez-Roa
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
| | - Tomás G. Santiago
- Instituto de Investigaciones Químicas
- CSIC-Universidad de Sevilla
- 41092 Sevilla
- Spain
| | - Maria Fernández-Millán
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
| | - Tomás Cuenca
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
| | - Pilar Palma
- Instituto de Investigaciones Químicas
- CSIC-Universidad de Sevilla
- 41092 Sevilla
- Spain
| | - Juan Cámpora
- Instituto de Investigaciones Químicas
- CSIC-Universidad de Sevilla
- 41092 Sevilla
- Spain
| | - Marta E. G. Mosquera
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
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34
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Rossi LM, Fiorio JL, Garcia MAS, Ferraz CP. The role and fate of capping ligands in colloidally prepared metal nanoparticle catalysts. Dalton Trans 2018; 47:5889-5915. [DOI: 10.1039/c7dt04728b] [Citation(s) in RCA: 169] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this Perspective article, we highlight emerging opportunities for the rational design of catalysts upon the choice, exchange, partial removal or pyrolysis of ligands.
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Affiliation(s)
- Liane M. Rossi
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Jhonatan L. Fiorio
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Marco A. S. Garcia
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
| | - Camila P. Ferraz
- Departamento de Química Fundamental
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
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35
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Cuevas-Chávez CA, Zamora-Moreno J, Muñoz-Hernández MA, Bijani C, Sabo-Etienne S, Montiel-Palma V. Stabilization of Trans Disilyl Coordination at Square-Planar Platinum Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00566] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cynthia A. Cuevas-Chávez
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos C. P. 62209, México
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Julio Zamora-Moreno
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos C. P. 62209, México
| | - Miguel A. Muñoz-Hernández
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos C. P. 62209, México
| | - Christian Bijani
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Sylviane Sabo-Etienne
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, F-31077 Toulouse Cedex 4, France
| | - Virginia Montiel-Palma
- Centro de Investigaciones Químicas, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, Cuernavaca, Morelos C. P. 62209, México
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36
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Baishya A, Kumar L, Barman MK, Biswal HS, Nembenna S. N-Heterocyclic Carbene–Carbodiimide (“NHC–CDI”) Adduct or Zwitterionic-Type Neutral Amidinate-Supported Magnesium(II) and Zinc(II) Complexes. Inorg Chem 2017; 56:9535-9546. [DOI: 10.1021/acs.inorgchem.7b00879] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ashim Baishya
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar 752 050, India
| | - Lokesh Kumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar 752 050, India
| | - Milan Kr. Barman
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar 752 050, India
| | - Himansu S. Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar 752 050, India
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar 752 050, India
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37
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Martínez-Prieto LM, Rakers L, López-Vinasco AM, Cano I, Coppel Y, Philippot K, Glorius F, Chaudret B, van Leeuwen PWNM. Soluble Platinum Nanoparticles Ligated by Long-Chain N-Heterocyclic Carbenes as Catalysts. Chemistry 2017; 23:12779-12786. [DOI: 10.1002/chem.201702288] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Luis M. Martínez-Prieto
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Lena Rakers
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Angela M. López-Vinasco
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Israel Cano
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Yannick Coppel
- LCC; Laboratoire de Chimie de Coordination; CNRS, UPS; 205, Route de Narbonne 31077 Toulouse France
| | - Karine Philippot
- LCC; Laboratoire de Chimie de Coordination; CNRS, UPS; 205, Route de Narbonne 31077 Toulouse France
| | - Frank Glorius
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Bruno Chaudret
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
| | - Piet W. N. M. van Leeuwen
- LPCNO; Laboratoire de Physique et Chimie des Nano-Objets, UMR5215 INSA-CNRS UPS; Institut des Sciences appliquées; 135, Avenue de Rangueil 31077 Toulouse France
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38
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Cano I, Martínez-Prieto LM, Fazzini PF, Coppel Y, Chaudret B, van Leeuwen PWNM. Characterization of secondary phosphine oxide ligands on the surface of iridium nanoparticles. Phys Chem Chem Phys 2017; 19:21655-21662. [DOI: 10.1039/c7cp03439c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The coordination mode of secondary phosphine oxide ligands on the surface of iridium nanoparticle catalysts was elucidated by solid-state NMR.
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Affiliation(s)
- Israel Cano
- Laboratoire de Physique et Chimie des Nano Objets
- LPCNO
- UMR5215 INSA-UPS-CNRS
- Institut National des Sciences Appliquées
- 135 Avenue de Rangueil
| | - Luis M. Martínez-Prieto
- Laboratoire de Physique et Chimie des Nano Objets
- LPCNO
- UMR5215 INSA-UPS-CNRS
- Institut National des Sciences Appliquées
- 135 Avenue de Rangueil
| | - Pier F. Fazzini
- Laboratoire de Physique et Chimie des Nano Objets
- LPCNO
- UMR5215 INSA-UPS-CNRS
- Institut National des Sciences Appliquées
- 135 Avenue de Rangueil
| | - Yannick Coppel
- CNRS
- LCC (Laboratoire de Chimie de Coordination) 205 Route de Narbonne
- F-31077 Toulouse Cedex 04
- France
- Universite’ de Toulouse
| | - Bruno Chaudret
- Laboratoire de Physique et Chimie des Nano Objets
- LPCNO
- UMR5215 INSA-UPS-CNRS
- Institut National des Sciences Appliquées
- 135 Avenue de Rangueil
| | - Piet W. N. M. van Leeuwen
- Laboratoire de Physique et Chimie des Nano Objets
- LPCNO
- UMR5215 INSA-UPS-CNRS
- Institut National des Sciences Appliquées
- 135 Avenue de Rangueil
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