251
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Léger B, Denicourt-Nowicki A, Olivier-Bourbigou H, Roucoux A. Rhodium Nanocatalysts Stabilized by Various Bipyridine Ligands in Nonaqueous Ionic Liquids: Influence of the Bipyridine Coordination Modes in Arene Catalytic Hydrogenation. Inorg Chem 2008; 47:9090-6. [DOI: 10.1021/ic8010713] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Bastien Léger
- Equipe “Chimie Organique et Supramoléculaire”, Groupe “Nanocatalyse”, UMR CNRS 6226 ≪Sciences Chimiques de Rennes≫, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Général Leclerc, 35700 Rennes, France, and IFP, Rond-Point de l’Echangeur de Solaize, BP3, 69630 Solaize, France
| | - Audrey Denicourt-Nowicki
- Equipe “Chimie Organique et Supramoléculaire”, Groupe “Nanocatalyse”, UMR CNRS 6226 ≪Sciences Chimiques de Rennes≫, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Général Leclerc, 35700 Rennes, France, and IFP, Rond-Point de l’Echangeur de Solaize, BP3, 69630 Solaize, France
| | - Hélène Olivier-Bourbigou
- Equipe “Chimie Organique et Supramoléculaire”, Groupe “Nanocatalyse”, UMR CNRS 6226 ≪Sciences Chimiques de Rennes≫, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Général Leclerc, 35700 Rennes, France, and IFP, Rond-Point de l’Echangeur de Solaize, BP3, 69630 Solaize, France
| | - Alain Roucoux
- Equipe “Chimie Organique et Supramoléculaire”, Groupe “Nanocatalyse”, UMR CNRS 6226 ≪Sciences Chimiques de Rennes≫, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Général Leclerc, 35700 Rennes, France, and IFP, Rond-Point de l’Echangeur de Solaize, BP3, 69630 Solaize, France
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252
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Mečiarová M, Cigáň M, Toma S, Gáplovský A. Kinetic Study of Michael Addition Catalyzed byN-Methylimidazole in Ionic Liquids: ResidualN-Methylimidazole in Ionic Liquids as a Strong Base. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800621] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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253
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Prechtl MHG, Scariot M, Scholten JD, Machado G, Teixeira SR, Dupont J. Nanoscale Ru(0) Particles: Arene Hydrogenation Catalysts in Imidazolium Ionic Liquids. Inorg Chem 2008; 47:8995-9001. [DOI: 10.1021/ic801014f] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin H. G. Prechtl
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, Institute of Physics, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, and Universidade de Caxias do Sul, Departamento de Engenharia Química, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil
| | - Morgana Scariot
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, Institute of Physics, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, and Universidade de Caxias do Sul, Departamento de Engenharia Química, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil
| | - Jackson D. Scholten
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, Institute of Physics, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, and Universidade de Caxias do Sul, Departamento de Engenharia Química, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil
| | - Giovanna Machado
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, Institute of Physics, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, and Universidade de Caxias do Sul, Departamento de Engenharia Química, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil
| | - Sérgio R. Teixeira
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, Institute of Physics, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, and Universidade de Caxias do Sul, Departamento de Engenharia Química, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil
| | - Jairton Dupont
- Laboratory of Molecular Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, Institute of Physics, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, CEP 91501-970, RS, Brazil, and Universidade de Caxias do Sul, Departamento de Engenharia Química, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil
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254
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Khatri OP, Adachi K, Murase K, Okazaki KI, Torimoto T, Tanaka N, Kuwabata S, Sugimura H. Self-assembly of ionic liquid (BMI-PF6)-stabilized gold nanoparticles on a silicon surface: chemical and structural aspects. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7785-92. [PMID: 18572958 DOI: 10.1021/la800678m] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Ultrafine monodisperse gold nanoparticles (AuNPs) were synthesized by an elegant sputtering of gold onto 1- n-butyl-3-methylimidazolium hexafluorophosphate (BMI-PF(6)) ionic liquid. It was found that the BMI-PF(6) supramolecular aggregates were loosely coordinated to the gold nanoparticles and were replaceable with thiol molecules. The self-assembly of BMI-PF(6)-stabilized AuNPs onto a (3-mercaptopropyl)trimethoxysilane (MPS)-functionalized silicon surface in 2D arrays, followed by dodecanethiol (DDT) treatment, have been demonstrated using X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and contact angle measurements. DDT treatment of tethered AuNPs revealed two types of interactions between AuNPs and the MPS-functionalized surface: (a) AuNPs anchor through Au-S chemisorption linkage resulting in strong immobilization and (b) some of the AuNPs are supported by physisorption, driven by BMI-PF(6). The attachment of these particles remains unchanged with sonication. The replacement of BMI-PF(6) aggregates from physisorbed AuNPs with DDT molecules advances the dilution of their interaction with the MPS-functionalized surface, and they subsequently detach from the silicon surface. The present finding is promising for the immobilization of ionic liquid-stabilized nanoparticles, which is very desirable for electronic and catalytic device fabrication. Additionally, these environmentally friendly AuNPs are expected to replace conventional citrate-stabilized AuNPs.
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Affiliation(s)
- Om P Khatri
- Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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255
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Scholten JD, Dupont J. Alkene Hydroformylation Catalyzed by Rhodium Complexes in Ionic Liquids: Detection of Transient Carbene Species. Organometallics 2008. [DOI: 10.1021/om8003948] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jackson D. Scholten
- Laboratory of Molecular Catalysis, Institute of Chemistry-UFRGS, Avenida Bento Gonçalves, 9500 P.O. Box 15003, 91501-970 Porto Alegre-RS, Brazil
| | - Jairton Dupont
- Laboratory of Molecular Catalysis, Institute of Chemistry-UFRGS, Avenida Bento Gonçalves, 9500 P.O. Box 15003, 91501-970 Porto Alegre-RS, Brazil
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256
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Gao Y, Voigt A, Zhou M, Sundmacher K. Synthesis of Single-Crystal Gold Nano- and Microprisms Using a Solvent-Reductant-Template Ionic Liquid. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800467] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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257
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Mayer CR, Cucchiaro G, Jullien J, Dumur F, Marrot J, Dumas E, Sécheresse F. Functionalization of Gold Nanoparticles by Iron(III) Complexes Derived from Schiff Base Ligands. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800227] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cédric R. Mayer
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
| | - Gregory Cucchiaro
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
| | - Josseline Jullien
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
| | - Frédéric Dumur
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
| | - Jérôme Marrot
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
| | - Eddy Dumas
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
| | - Francis Sécheresse
- Institut Lavoisier de Versailles, UMR 8180, Université de Versailles, 45 Avenue des Etats‐Unis, 78035 Versailles, France, Fax: +33‐1‐39254381
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258
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Durand J, Fernández F, Barrière C, Teuma E, Gómez K, González G, Gómez M. DOSY technique applied to palladium nanoparticles in ionic liquids. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2008; 46:739-743. [PMID: 18524017 DOI: 10.1002/mrc.2244] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Multinuclear ((1)H, (31)P, (19)F and (11)B) diffusion ordered spectroscopy (DOSY) technique has been applied to palladium nanoparticles systems dispersed in ionic liquids (ILs). Even if the nanoparticles themselves cannot be detected through NMR, observation of the solvent (methanol) and the IL ([BMI][PF(6)] or [BMI][NTf(2)]), their diffusion coefficients and their changes in the presence of nanoparticles allow us to draw significant assumptions about the organisation of palladium nanoparticles in the IL. For comparison, the corresponding molecular precursors ([PdCl(2)(cod)] or [Pd(2)(dba)(3)]) have been also studied.
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Affiliation(s)
- Jérôme Durand
- Laboratoire Hétérochimie Fondamentale et Appliquée, UMR-CNRS 5069, Bât 2R1, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse cedex 9, France
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259
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Synthesis of new aminophosphine complexes and their catalytic activities in C–C coupling reactions. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.05.010] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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260
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Yang X, Yan N, Fei Z, Crespo-Quesada RM, Laurenczy G, Kiwi-Minsker L, Kou Y, Li Y, Dyson PJ. Biphasic Hydrogenation over PVP Stabilized Rh Nanoparticles in Hydroxyl Functionalized Ionic Liquids. Inorg Chem 2008; 47:7444-6. [DOI: 10.1021/ic8009145] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue Yang
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ning Yan
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhaofu Fei
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - R. Micaela Crespo-Quesada
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Gábor Laurenczy
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Lioubov Kiwi-Minsker
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yuan Kou
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yongdan Li
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Paul J. Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, China, and PKU Green Chemistry Center, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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261
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Yang X, Fei Z, Geldbach TJ, Phillips AD, Hartinger CG, Li Y, Dyson PJ. Suzuki Coupling Reactions in Ether-Functionalized Ionic Liquids: The Importance of Weakly Interacting Cations. Organometallics 2008. [DOI: 10.1021/om800355g] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xue Yang
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
| | - Zhaofu Fei
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
| | - Tilmann J. Geldbach
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
| | - Andrew D. Phillips
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
| | - Christian G. Hartinger
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
| | - Yongdan Li
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
| | - Paul J. Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland, and Tianjin Key Laboratory of Catalysis Science and Technology and State Key Laboratory for Chemical Engineering (Tianjin University), School of Chemical Engineering, Tianjin University, Tianjin 300072, Peopleʼs Republic of China
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262
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Fabrication of gold nano- and microstructures in ionic liquids—A remarkable anion effect. J Colloid Interface Sci 2008; 323:260-6. [DOI: 10.1016/j.jcis.2008.04.016] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2008] [Revised: 03/31/2008] [Accepted: 04/04/2008] [Indexed: 11/19/2022]
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263
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Niembro S, Shafir A, Vallribera A, Alibés R. Palladium Nanoparticles Supported on an Organic−Inorganic Fluorinated Hybrid Material. Application to Microwave-Based Heck Reaction. Org Lett 2008; 10:3215-8. [DOI: 10.1021/ol801091u] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sandra Niembro
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Cerdanyola, Barcelona, Spain
| | - Alexandr Shafir
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Cerdanyola, Barcelona, Spain
| | - Adelina Vallribera
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Cerdanyola, Barcelona, Spain
| | - Ramon Alibés
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193 Cerdanyola, Barcelona, Spain
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264
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Yinghuai Z, Chenyan K, Peng AT, Emi A, Monalisa W, Kui-Jin Louis L, Hosmane NS, Maguire JA. Catalytic Phenylborylation Reaction by Iridium(0) Nanoparticles Produced from Hydridoiridium Carborane. Inorg Chem 2008; 47:5756-61. [DOI: 10.1021/ic8000152] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhu Yinghuai
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - Koh Chenyan
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - Ang Thiam Peng
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - A. Emi
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - Winata Monalisa
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - Loo Kui-Jin Louis
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - Narayan S. Hosmane
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
| | - John A. Maguire
- Institute of Chemical and Engineering Sciences Ltd, 1 Pesek Road, Jurong Island, Singapore 627833, Department of Chemistry and Chemical Biology, Northern Illinois University, DeKalb, Illinois 60115-2862, and Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314
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265
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An imidazolium tosylate salt as efficient and recyclable catalyst for acetylation in an ionic liquid. MONATSHEFTE FUR CHEMIE 2008. [DOI: 10.1007/s00706-007-0814-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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266
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Dash P, Dehm NA, Scott RW. Bimetallic PdAu nanoparticles as hydrogenation catalysts in imidazolium ionic liquids. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.02.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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267
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Zhu Y, Lee CN, Kemp R, Hosmane NS, Maguire J. Latest Developments in the Catalytic Application of Nanoscaled Neutral Group 8–10 Metals. Chem Asian J 2008; 3:650-62. [DOI: 10.1002/asia.200800005] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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268
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Zhang J, Meng L, Zhao D, Fei Z, Lu Q, Dyson PJ. Fabrication of dendritic gold nanoparticles by use of an ionic polymer template. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:2699-2704. [PMID: 18288870 DOI: 10.1021/la702421z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A facile method for the fabrication of dendritic gold nanoparticles (NPs) by use of an ionic polymer template has been developed. In situ generation of an imidazolium-based (cationic) polymer, poly[1-methyl-3-(4-vinylbenzyl)imidazolium], with AuCl4- counteranions is achieved by addition of HAuCl4 into a solution containing poly[1-methyl-3-(4-vinylbenzyl)imidazolium chloride]. Subsequent reduction with NaBH4 in water or in a mixture of ethanol and water affords various NPs depending on the conditions, including large dendritic gold NPs that have been analyzed by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), and selected area electron diffraction (SAED). The structures of the dendritic gold NPs were found to depend on the ethanol concentration. Scanning electron microscopy (SEM) images of the ionic polymer reveal that the solvent used to deposit the polymer strongly influences its structure and may be correlated to the structure of the resulting NPs.
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Affiliation(s)
- Jichun Zhang
- School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
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269
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Yang X, Fei Z, Zhao D, Ang WH, Li Y, Dyson PJ. Palladium Nanoparticles Stabilized by an Ionic Polymer and Ionic Liquid: A Versatile System for C−C Cross-Coupling Reactions. Inorg Chem 2008; 47:3292-7. [DOI: 10.1021/ic702305t] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xue Yang
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland, and Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, People's Republic of China
| | - Zhaofu Fei
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland, and Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, People's Republic of China
| | - Dongbin Zhao
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland, and Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, People's Republic of China
| | - Wee Han Ang
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland, and Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, People's Republic of China
| | - Yongdan Li
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland, and Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, People's Republic of China
| | - Paul J. Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland, and Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, People's Republic of China
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270
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Migliorini MV, Donato RK, Benvegnú MA, Dupont J, Gonçalves RS, Schrekker HS. Imidazolium ionic liquid–water mixtures: The formation of a new species that inhibits the electrocatalytical charge transfer processes on a platinum surface. CATAL COMMUN 2008. [DOI: 10.1016/j.catcom.2007.09.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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271
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Durand J, Teuma E, Malbosc F, Kihn Y, Gómez M. Palladium nanoparticles immobilized in ionic liquid: An outstanding catalyst for the Suzuki C–C coupling. CATAL COMMUN 2008. [DOI: 10.1016/j.catcom.2007.06.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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272
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Li F, Bai S, Hor TSA. Benzenimidazole-Functionalized Imidazolium-Based N-Heterocyclic Carbene Complexes of Silver(I) and Palladium(II): Isolation of a Ag3 Intermediate toward a Facile Transmetalation and Suzuki Coupling. Organometallics 2008. [DOI: 10.1021/om700949s] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fuwei Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Shiqiang Bai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - T. S. Andy Hor
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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273
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Léger B, Denicourt-Nowicki A, Roucoux A, Olivier-Bourbigou H. Synthesis of Bipyridine-Stabilized Rhodium Nanoparticles in Non-Aqueous Ionic Liquids: A New Efficient Approach for Arene Hydrogenation with Nanocatalysts. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200700341] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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274
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Niembro S, Vallribera A, Moreno-Mañas M. Star-shaped heavily fluorinated aromatic sulfurs: stabilization of palladium nanoparticles active as catalysts in cross-coupling reactions. NEW J CHEM 2008. [DOI: 10.1039/b707776a] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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275
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Litschauer M, Neouze MA. Nanoparticles connected through an ionic liquid-like network. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b713442h] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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276
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Silva DO, Scholten JD, Gelesky MA, Teixeira SR, Dos SACB, Souza-Aguiar EF, Dupont J. Catalytic gas-to-liquid processing using cobalt nanoparticles dispersed in imidazolium ionic liquids. CHEMSUSCHEM 2008; 1:291-294. [PMID: 18605091 DOI: 10.1002/cssc.200800022] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Dagoberto O Silva
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, 9500 Porto Alegre, RS, Brazil
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277
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Léger B, Denicourt-Nowicki A, Olivier-Bourbigou H, Roucoux A. Rhodium colloidal suspensions stabilised by poly-N-donor ligands in non-aqueous ionic liquids: preliminary investigation into the catalytic hydrogenation of arenes. CHEMSUSCHEM 2008; 1:984-987. [PMID: 19040256 DOI: 10.1002/cssc.200800194] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Bastien Léger
- Equipe Chimie Organique et Supramoléculaire, Groupe Nanocatalyse, UMR CNRS 6226 Sciences Chimiques de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Gal Leclerc, 35700 Rennes, France
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278
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Nachtigall F, Corilo Y, Cassol C, Ebeling G, Morgon N, Dupont J, Eberlin M. Multiply Charged (Di-)Radicals. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703858] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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279
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Nachtigall F, Corilo Y, Cassol C, Ebeling G, Morgon N, Dupont J, Eberlin M. Multiply Charged (Di-)Radicals. Angew Chem Int Ed Engl 2008; 47:151-4. [DOI: 10.1002/anie.200703858] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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280
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Schrekker HS, Gelesky MA, Stracke MP, Schrekker CML, Machado G, Teixeira SR, Rubim JC, Dupont J. Disclosure of the imidazolium cation coordination and stabilization mode in ionic liquid stabilized gold(0) nanoparticles. J Colloid Interface Sci 2007; 316:189-95. [PMID: 17761189 DOI: 10.1016/j.jcis.2007.08.018] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2007] [Revised: 08/07/2007] [Accepted: 08/09/2007] [Indexed: 10/23/2022]
Abstract
A surface-enhanced Raman spectroscopy (SERS) study of imidazolium ionic liquid stabilized gold(0) nanoparticles (GNPs) furnished previously unknown knowledge about the coordination and stabilization mode of the imidazolium cation. GNPs were prepared by hydrazine reduction of a chloroauric acid solution in 1-triethylene glycol monomethyl ether-3-methylimidazolium methanesulfonate 2 as ether-functionalized room-temperature ionic liquid (RTIL). UV-vis spectroscopy showed the presence of GNP aggregates as absorptions extended to the NIR region. A parallel coordination mode for the imidazolium cation of RTIL 2 on the GNP surface was observed by SERS, which occurred without the simultaneous coordination of the 1-triethylene glycol monomethyl ether-functionality. Instead of this, the ether-functionality was directed away from the GNP surface and acted as steric barrier between the GNPs/GNP aggregates, thus preventing further aggregation. These new insights suggest that the imidazolium cation is responsible for electrosteric stabilization.
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Affiliation(s)
- Henri S Schrekker
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, P.O. Box 15003, CEP: 91501-970, Porto Alegre, RS, Brazil.
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281
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Abad A, Corma A, García H. Catalyst Parameters Determining Activity and Selectivity of Supported Gold Nanoparticles for the Aerobic Oxidation of Alcohols: The Molecular Reaction Mechanism. Chemistry 2007; 14:212-22. [DOI: 10.1002/chem.200701263] [Citation(s) in RCA: 349] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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282
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283
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284
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Fernández F, Cordero B, Durand J, Muller G, Malbosc F, Kihn Y, Teuma E, Gómez M. Palladium catalyzed Suzuki C-C couplings in an ionic liquid: nanoparticles responsible for the catalytic activity. Dalton Trans 2007:5572-81. [PMID: 18043820 DOI: 10.1039/b713449e] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of functionalized ligands derived from norborn-5-ene-2,3-dicarboxylic anhydride has been used in Suzuki C-C cross-couplings between aryl boronic acids and aryl bromide derivatives in [BMI][PF(6)] (BMI=1-n-butyl-3-methyl-imidazolium), using palladium acetate as catalytic precursor. High conversions and yields are obtained when amine ligands containing hydroxy groups are involved. TEM analyses after catalysis show the formation of small nanoparticles, in contrast to the agglomerates observed when nanoparticles are intentionally preformed, with a consequent decrease in the catalytic activity in the latter case. Some tests, including the correlation effect between solvent and ligand, are carried out to try to identify the true nature of the catalyst. All the results obtained suggest that formation of nanoparticles is required to lead to a catalytically active system.
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Affiliation(s)
- Fernando Fernández
- Laboratoire Hétérochimie Fondamentale et Appliquée UMR CNRS 5069, Univesité Paul Sabatier, 118 route de Narbonne, 31062, Toulouse cedex 9, France
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285
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Ye C, Xiao JC, Twamley B, LaLonde AD, Grant Norton M, Shreeve JM. Basic Ionic Liquids: Facile Solvents for Carbon–Carbon Bond Formation Reactions and Ready Access to Palladium Nanoparticles. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700502] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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286
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Schrekker HS, Stracke MP, Schrekker CML, Dupont J. Ether-Functionalized Imidazolium Hexafluorophosphate Ionic Liquids for Improved Water Miscibilities. Ind Eng Chem Res 2007. [DOI: 10.1021/ie0709685] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Henri S. Schrekker
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil, and Laboratory of Technological Processes and Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil
| | - Marcelo P. Stracke
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil, and Laboratory of Technological Processes and Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil
| | - Clarissa M. L. Schrekker
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil, and Laboratory of Technological Processes and Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil
| | - Jairton Dupont
- Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil, and Laboratory of Technological Processes and Catalysis, Institute of Chemistry, UFRGS, Av. Bento Gonçalves 9500, Porto Alegre-RS, CEP:91501-970, P.O. Box 15003, Brazil
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287
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Park IS, Kwon MS, Kang KY, Lee JS, Park J. Rhodium and Iridium Nanoparticles Entrapped in Aluminum Oxyhydroxide Nanofibers: Catalysts for Hydrogenations of Arenes and Ketones at Room Temperature with Hydrogen Balloon. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200600651] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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288
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O'Toole S, Pentlavalli S, Doherty AP. Behavior of Electrogenerated Bases in Room-Temperature Ionic Liquids. J Phys Chem B 2007; 111:9281-7. [PMID: 17630791 DOI: 10.1021/jp072394n] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reductive electrochemistry of substituted benzophenones in the aprotic room-temperature ionic liquid (RTIL) 1-butyl-1-methylpyrrolidinium bistriflimide occurs via two consecutive one-electron processes leading to the radical anion and dianion, respectively. The radical anion exhibited electrochemical reversibility at all time-scales whereas the dianion exhibited reversibility at potential sweep rates of >or=10 V s(-1), collectively indicating the absence of strong ion-paring with the RTIL cation. In contrast, reduction in 1-butyl-3-methylimidazolium bistriflimide is complicated by proton-transfer from the [Bmim] cation. At low potential sweep rates, reduction involves a single two-electron process characteristic of either an electrochemical, chemical, electrochemical (ECE) or disproportion-type (DISP1) mechanism. The rate of radical anion protonation in [Bmim] is governed by basicity and conforms to the Hammett free-energy relation. At higher potential sweep rates in [Bmim][NTf2], reduction occurs via two consecutive one-electron processes, giving rise to the partially reversible generation of the radical anion and the irreversible generation of the dianion, respectively. Also, the redox potentials for the reversible parent/radical anion couples were found to be a linear function of Hammett substituent constants in both RTIL media and exhibited effectively equivalent solvent-dependent reaction constants, which are similar to those for reduction in polar molecular solvents such as acetonitrile or alcohols.
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Affiliation(s)
- Sarah O'Toole
- School of Chemistry and Chemical Engineering, David Keir Building, Queen's University of Belfast, Stranmillis Road, Belfast, Northern Ireland, BT9 5AG, UK
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289
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Li F, Xia C. Pd(Phen)Cl2 stabilized by ionic liquid: an efficient and reusable catalyst for biphasic oxidative cyclocarbonylation of β-aminoalcohols and 2-aminophenol. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.05.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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290
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Abstract
A serendipitous finding that ionic liquids gel with carbon nanotubes has opened a new possibility of ionic liquids as modifiers for carbon nanotubes. Upon being ground into ionic liquids, carbon nanotube bundles are untangled, and the resultant fine bundles form a network structure. This is due to the possible specific interaction between the imidazolium ion component and the pi-electronic nanotube surface. The resultant gelatinous materials, consisting of highly electroconductive nanowires and fluid electrolytes, can be utilized for a wide variety of electrochemical applications, such as sensors, capacitors, and actuators. Ionic liquids allow for noncovalent and covalent modifications of carbon nanotubes and fabrication of polymer composites with enhanced physical properties. The processing of carbon nanotubes with ionic liquids is not accompanied by the disruption of the pi-conjugated nanotube structure and does not require solvents; therefore it can readily be scaled up. This article focuses on new aspects of ionic liquids for designer soft materials based on carbon nanotubes.
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Affiliation(s)
- Takanori Fukushima
- Nanospace Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, National Museum of Emerging Science and Innovation, 2-41 Aomi, Koto-ku, Tokyo 135-0064, Japan.
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291
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Sieffert N, Wipff G. Solvation of Sodium Chloride in the 1-Butyl-3-methyl-imidazolium Bis(trifluoromethylsulfonyl)imide Ionic Liquid: A Molecular Dynamics Study. J Phys Chem B 2007; 111:7253-66. [PMID: 17550283 DOI: 10.1021/jp071347s] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report molecular dynamics studies on the solvation of sodium chloride in the 1-butyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)imide ionic liquid ([BMI][Tf2N] IL). We first consider the potential of mean force for dissociating a single Na+Cl- ion pair, showing that the latter prefers to be undissociated rather than dissociated (by ca. 9 kcal/mol), with a free energy barrier of ca. 5 kcal/mol (at d approximately 5.2 A) for the association process. The preference for Na+Cl- association is also observed from a 100 ns molecular dynamics simulation of a concentrated solution, where the Na+Cl- ions tend to form oligomers and microcrystals in the IL. Conversely, the simulation of Na13Cl14- and Na14Cl13+ cubic microcrystals (with, respectively, Cl- and Na+ at the vertices) does not lead to dissolution in the IL. Among these, Na14Cl13+ is found to be better solvated than Na13Cl14-, mainly due to the stronger Na+...Tf2N- interactions as compared to the Cl-...BMI+ interactions at the vertices of the cube. We finally consider the solid/liquid interface between the 100 face of NaCl and the IL, revealing that, in spite of its polar nature, the crystal surface is solvated by the less polar IL components (CF3(Tf2N) and butyl(BMI) groups) rather than by the polar ones (O(Tf2N) and imidazolium(BMI) ring). Specific ordering at the interface is described for both Tf2N- anions and BMI+ cations. In the first IL layer, the ions are rather parallel to the surface, whereas in the second "layer" they are more perpendicular. A similar IL structure is found at the surface of the all-neutral Na0Cl0 solid analogue, confirming that the solvation of the crystal is rather "apolar", due to the mismatch between the IL and the crystal ions. Several comparisons with water, methanol, or different BMI+-based ILs as solvents are presented, allowing us to better understand the specificity of the ionic liquid-NaCl interactions.
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Affiliation(s)
- Nicolas Sieffert
- Laboratoire MSM, UMR CNRS 7177, Institut de Chimie, Strasbourg, France
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292
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Donato RK, Migliorini MV, Benvegnú MA, Dupont J, Gonçalves RS, Schrekker HS. The electrochemical properties of a platinum electrode in functionalized room temperature imidazolium ionic liquids. J Solid State Electrochem 2007. [DOI: 10.1007/s10008-007-0304-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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293
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Scholten JD, Ebeling G, Dupont J. On the involvement of NHC carbenes in catalytic reactions by iridium complexes, nanoparticle and bulk metal dispersed in imidazolium ionic liquids. Dalton Trans 2007:5554-60. [DOI: 10.1039/b707888a] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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294
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Migowski P, Machado G, Texeira SR, Alves MCM, Morais J, Traverse A, Dupont J. Synthesis and characterization of nickel nanoparticles dispersed in imidazolium ionic liquids. Phys Chem Chem Phys 2007; 9:4814-21. [PMID: 17712460 DOI: 10.1039/b703979d] [Citation(s) in RCA: 163] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diameter and size-distribution of Ni nanoparticles prepared by the decomposition of [bis(1,5-cyclooctadiene)nickel(0)] organometallic precursor dissolved in 1-alkyl-3-methylimidazolium N-bis(trifluoromethanesulfonyl) amide ionic liquids depend on the length of the alkyl side-chain of the imidazolium ring. The increase of the organization range order of the ionic liquid that increases with that of the alkyl side-chain (from n-butyl to n-hexadecyl) induces the formation of nanoparticles with a smaller diameter and size-distribution. The cubic fcc Ni nanoparticles with 4.9 +/- 0.9 to 5.9 +/- 1.4 nm in mean diameter and monomodal size-distribution thus prepared are probably composed of a small cap layer of NiO around a core of Ni metal. The contribution of the oxide layer also depends on the medium i.e. the metal oxide ratio increases in salts containing four to eight carbons on their side-chains and then decreases as the number of carbons increases. The Ni nanoparticles dispersed in the ionic liquids are active catalysts for the hydrogenation of olefins under relatively mild reaction conditions.
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Affiliation(s)
- Pedro Migowski
- Laboratory of Molecular Catalysis, Instituto de Química-UFRGS, P.O. Box 15003, Porto Alegre, 91501-970, RS Brazil
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295
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Gutel T, Garcia-Antõn J, Pelzer K, Philippot K, Santini CC, Chauvin Y, Chaudret B, Basset JM. Influence of the self-organization of ionic liquids on the size of ruthenium nanoparticles: effect of the temperature and stirring. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b706139k] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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296
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Gelesky MA, Chiaro SSX, Pavan FA, dos Santos JHZ, Dupont J. Supported ionic liquid phase rhodium nanoparticle hydrogenation catalysts. Dalton Trans 2007:5549-53. [DOI: 10.1039/b708111a] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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