1
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Rein J, Zacate SB, Mao K, Lin S. A tutorial on asymmetric electrocatalysis. Chem Soc Rev 2023; 52:8106-8125. [PMID: 37910160 PMCID: PMC10842033 DOI: 10.1039/d3cs00511a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Electrochemistry has emerged as a powerful means to enable redox transformations in modern chemical synthesis. This tutorial review delves into the unique advantages of electrochemistry in the context of asymmetric catalysis. While electrochemistry has historically been used as a green and mild alternative for established enantioselective transformations, in recent years asymmetric electrocatalysis has been increasingly employed in the discovery of novel asymmetric methodologies based on reaction mechanisms unique to electrochemistry. This tutorial review first provides a brief tutorial introduction to electrosynthesis, then explores case studies on homogenous small molecule asymmetric electrocatalysis. Each case study serves to highlight a key advance in the field, starting with the historic electrification of known asymmetric transformations and culminating with modern methods relying on unique electrochemical mechanistic sequences. Finally, we highlight case studies in the emerging reasearch areas at the interface of asymmetric electrocatalysis with biocatalysis and heterogeneous catalysis.
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Affiliation(s)
- Jonas Rein
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Samson B Zacate
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Kaining Mao
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Song Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA.
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2
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Kleinhaus JT, Wolf J, Pellumbi K, Wickert L, Viswanathan SC, Junge Puring K, Siegmund D, Apfel UP. Developing electrochemical hydrogenation towards industrial application. Chem Soc Rev 2023; 52:7305-7332. [PMID: 37814786 DOI: 10.1039/d3cs00419h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Electrochemical hydrogenation reactions gained significant attention as a sustainable and efficient alternative to conventional thermocatalytic hydrogenations. This tutorial review provides a comprehensive overview of the basic principles, the practical application, and recent advances of electrochemical hydrogenation reactions, with a particular emphasis on the translation of these reactions from lab-scale to industrial applications. Giving an overview on the vast amount of conceivable organic substrates and tested catalysts, we highlight the challenges associated with upscaling electrochemical hydrogenations, such as mass transfer limitations and reactor design. Strategies and techniques for addressing these challenges are discussed, including the development of novel catalysts and the implementation of scalable and innovative cell concepts. We furthermore present an outlook on current challenges, future prospects, and research directions for achieving widespread industrial implementation of electrochemical hydrogenation reactions. This work aims to provide beginners as well as experienced electrochemists with a starting point into the potential future transformation of electrochemical hydrogenations from a laboratory curiosity to a viable technology for sustainable chemical synthesis on an industrial scale.
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Affiliation(s)
- Julian T Kleinhaus
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
| | - Jonas Wolf
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Kevinjeorjios Pellumbi
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Leon Wickert
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Sangita C Viswanathan
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Kai Junge Puring
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Daniel Siegmund
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
| | - Ulf-Peter Apfel
- Inorganic Chemistry I, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany.
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, Osterfelder Str. 3, 46047 Oberhausen, Germany
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3
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Yang LR, Zhang JJ, Zhao YJ, Wang ZL, Wang H, Lu JX. La1−xSrxFeO3 perovskite electrocatalysts for asymmetric electrocarboxylation of acetophenone with CO2. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Supramolecular chiral electrochemical reduction of acetophenone with hybridization of a chiral multifarene and Au nanoparticles. J Catal 2021. [DOI: 10.1016/j.jcat.2021.10.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Wang H, Yue YN, Xiong R, Liu YT, Yang LR, Wang Y, Lu JX. Electrochemically Promoted Asymmetric Transfer Hydrogenation of 2,2,2-Trifluoroacetophenone. J Org Chem 2021; 86:16158-16161. [PMID: 34382404 DOI: 10.1021/acs.joc.1c01030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The study reported an electrochemically promoted asymmetric hydrogen transfer reaction of 2,2,2-trifluoroacetophenone with a chiral Ru complex. (R)-α-(Trifluoromethyl) benzyl alcohol with a 96% yield and 94% ee could be obtained with only a 0.5 F mol-1 charge amount at room temperature and normal pressure.
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Affiliation(s)
- Huan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Ying-Na Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Rui Xiong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Yu-Ting Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Li-Rong Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Ying Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Jia-Xing Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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6
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Parker PD, Hou X, Dong VM. Reducing Challenges in Organic Synthesis with Stereoselective Hydrogenation and Tandem Catalysis. J Am Chem Soc 2021; 143:6724-6745. [PMID: 33891819 DOI: 10.1021/jacs.1c00750] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Tandem catalysis enables the rapid construction of complex architectures from simple building blocks. This Perspective shares our interest in combining stereoselective hydrogenation with transformations such as isomerization, oxidation, and epimerization to solve diverse challenges. We highlight the use of tandem hydrogenation for preparing complex natural products from simple prochiral building blocks and present tandem catalysis involving transfer hydrogenation and dynamic kinetic resolution. Finally, we underline recent breakthroughs and opportunities for asymmetric hydrogenation.
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Affiliation(s)
- Patrick D Parker
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Xintong Hou
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Vy M Dong
- Department of Chemistry, University of California, Irvine, California 92697, United States
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7
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Li H, Xue YF, Ge Q, Liu M, Cong H, Tao Z. Chiral electroorganic chemistry: An interdisciplinary research across electrocatalysis and asymmetric synthesis. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2020.111296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Electrocatalytic asymmetric reduction of ethyl benzoylformate on bimetallic Ag–Cu cathodes. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01449-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Wattanakit C, Kuhn A. Encoding Chiral Molecular Information in Metal Structures. Chemistry 2020; 26:2993-3003. [PMID: 31724789 DOI: 10.1002/chem.201904835] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/13/2019] [Indexed: 11/07/2022]
Abstract
The concept of encoding molecular information in bulk metals has been proposed over the past decade. The structure of various types of molecules, including enantiomers, can be imprinted in achiral substrates. Typically, to encode metals with chiral information, several approaches, based on chemical and electrochemical concepts, can be used. In this Minireview, recent achievements with respect to the development of such materials are discussed, including the entrapment of chiral biomolecules in metals, the chiral imprinting of metals, as well as the combination of imprinting with nanostructuring. The features and potential applications of these designer materials, such as chirooptical properties, enantioselective adsorption and separation, as well as their use for asymmetric synthesis will be presented. This will illustrate that the development of molecularly encoded metal structures opens up very interesting perspectives, especially in the frame of chiral technologies.
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Affiliation(s)
- Chularat Wattanakit
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 21210, Rayong, Thailand
| | - Alexander Kuhn
- CNRS UMR 5255, Bordeaux INP, Site ENSCBP, University of Bordeaux, 33607, Pessac, France
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10
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Ghosh M, Shinde VS, Rueping M. A review of asymmetric synthetic organic electrochemistry and electrocatalysis: concepts, applications, recent developments and future directions. Beilstein J Org Chem 2019; 15:2710-2746. [PMID: 31807206 PMCID: PMC6880813 DOI: 10.3762/bjoc.15.264] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 10/17/2019] [Indexed: 01/07/2023] Open
Abstract
The direct exploitation of ‘electrons’ as reagents in synthetic organic transformations is on the verge of a renaissance by virtue of its greenness, sustainability, atom economy, step economy and inherent safety. Achieving stereocontrol in such organic electrochemical reactions remains a major synthetic challenge and hence demands great expertise. This review provides a comprehensive discussion of the details of stereoselective organic electrochemical reactions along with the synthetic accomplishments achieved with these methods.
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Affiliation(s)
- Munmun Ghosh
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Valmik S Shinde
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Magnus Rueping
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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11
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Fontanesi C, Capua E, Paltiel Y, Waldeck DH, Naaman R. Spin-Dependent Processes Measured without a Permanent Magnet. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707390. [PMID: 29736985 DOI: 10.1002/adma.201707390] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/21/2018] [Indexed: 06/08/2023]
Abstract
A novel Hall circuit design that can be incorporated into a working electrode, which is used to probe spin-selective charge transfer and charge displacement processes, is reviewed herein. The general design of a Hall circuit based on a semiconductor heterostructure, which forms a shallow 2D electron gas and is used as an electrode, is described. Three different types of spin-selective processes have been studied with this device in the past: i) photoinduced charge exchange between quantum dots and the working electrode through chiral molecules is associated with spin polarization that creates a local magnetization and generates a Hall voltage; ii) charge polarization of chiral molecules by an applied voltage is accompanied by a spin polarization that generates a Hall voltage; and iii) cyclic voltammetry (current-voltage) measurements of electrochemical redox reactions that can be spin-analyzed by the Hall circuit to provide a third dimension (spin) in addition to the well-known current and voltage dimensions. The three studies reviewed open new doors into understanding both the spin current and the charge current in electronic materials and electrochemical processes.
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Affiliation(s)
| | - Eyal Capua
- Department of Chemical and Biological Physics, Weizmann Institute, Rehovot, 76100, Israel
| | - Yossi Paltiel
- Department of Applied Physics and Center for Nano Science and Nanotechnology, The Hebrew University, Jerusalem, 91904, Israel
| | - David H Waldeck
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Ron Naaman
- Department of Chemical and Biological Physics, Weizmann Institute, Rehovot, 76100, Israel
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12
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He J, Iagher L, Etgar L, Avnir D. Fine-tuning of the metal work function by molecular doping. Chem Commun (Camb) 2018; 54:7203-7206. [DOI: 10.1039/c8cc01637b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fine tuning of the metal work function (WF) in the range of 1 eV by 3D molecular doping of metals.
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Affiliation(s)
- Jin He
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology
- the Hebrew University of Jerusalem
- Jerusalem
- Israel
| | - Lior Iagher
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology
- the Hebrew University of Jerusalem
- Jerusalem
- Israel
| | - Lioz Etgar
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology
- the Hebrew University of Jerusalem
- Jerusalem
- Israel
| | - David Avnir
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology
- the Hebrew University of Jerusalem
- Jerusalem
- Israel
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13
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Yue YN, Meng WJ, Liu L, Hu QL, Wang H, Lu JX. Amino acid-functionalized multi-walled carbon nanotubes: A metal-free chiral catalyst for the asymmetric electroreduction of aromatic ketones. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.12.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Kumar A, Capua E, Vankayala K, Fontanesi C, Naaman R. Magnetless Device for Conducting Three-Dimensional Spin-Specific Electrochemistry. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708829] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anup Kumar
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Eyal Capua
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Kiran Vankayala
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
| | | | - Ron Naaman
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
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15
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Kumar A, Capua E, Vankayala K, Fontanesi C, Naaman R. Magnetless Device for Conducting Three-Dimensional Spin-Specific Electrochemistry. Angew Chem Int Ed Engl 2017; 56:14587-14590. [DOI: 10.1002/anie.201708829] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Anup Kumar
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Eyal Capua
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
| | - Kiran Vankayala
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
| | | | - Ron Naaman
- Department of Chemical Physics; Weizmann Institute of Science; Rehovot 76100 Israel
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16
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Kumar VB, Steinberg Y, Porat Z, Nassir M, Saady A, Hassner A, Gedanken A. A New Approach to Chiral Enrichment by Exposure of Racemates of Amino Acids to Sonochemically-Prepared BSA Microspheres. ChemistrySelect 2017. [DOI: 10.1002/slct.201701525] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Vijay Bhooshan Kumar
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Yael Steinberg
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Ze'ev Porat
- Division of Chemistry; Nuclear Research Center-Negev, P.O. Box; 9001 Be'er-Sheva 84190 Israel
- Institutes of Applied Research; Ben-Gurion University of the Negev; Be'er-Sheva 8410501 Israel
| | - Molhm Nassir
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Abed Saady
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Alfred Hassner
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Aharon Gedanken
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
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17
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Shapiro L, Avnir D. Catalyst@Metal Hybrids in a One-Pot Multistep Opposing Oxidation and Reduction Reaction Sequence. ChemCatChem 2017. [DOI: 10.1002/cctc.201601386] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Leora Shapiro
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology; The Hebrew University of Jerusalem; Jerusalem 91904 Israel
| | - David Avnir
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology; The Hebrew University of Jerusalem; Jerusalem 91904 Israel
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18
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Yang HP, Fen Q, Wang H, Lu JX. Copper encapsulated alkaloids composite: An effective heterogeneous catalyst for electrocatalytic asymmetric hydrogenation. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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19
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“Inherently chiral” thiophene-based electrodes at work: a screening of enantioselection ability toward a series of pharmaceutically relevant phenolic or catecholic amino acids, amino esters, and amine. Anal Bioanal Chem 2016; 408:7243-54. [DOI: 10.1007/s00216-016-9852-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 07/26/2016] [Accepted: 07/29/2016] [Indexed: 10/21/2022]
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20
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Yang HP, Qin S, Yue YN, Liu L, Wang H, Lu JX. Entrapment of a pyridine derivative within a copper–palladium alloy: a bifunctional catalyst for electrochemical reduction of CO2 to alcohols with excellent selectivity and reusability. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00971a] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A highly stable and recyclable catalyst, [PYD]@Cu–Pd, was demonstrated to have dual activity for electro-reduction of CO2 in aqueous solution.
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Affiliation(s)
- Heng-Pan Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Sen Qin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Ying-Na Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Li Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Huan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Jia-Xing Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
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21
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Naor H, Avnir D. Electroless Functionalization of Silver Films by Its Molecular Doping. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26461-26469. [PMID: 26571199 DOI: 10.1021/acsami.5b10619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a methodology which by far extends the potential applications of thin conductive silver films achieved by an electroless molecular doping process of the metal with any of the endless functional molecules that the large library of organic molecules offer. The resulting metallic films within which the molecule is entrapped--molecule@Ag--carry both the classical chemical and physical properties of silver films, as well as the function of the entrapped molecule. Raman measurements of the organic molecules from within the silver films provide the first spectroscopic observations from within silver, and clearly show that entrapment, a three-dimensional process, and adsorption, a two-dimensional process, on silver films are distinctly different processes. Three organic molecules, the cationic Neutral red, the anionic Congo red, and the antibacterial agent chlorhexidine digluconate (CH), were used to demonstrate the generality of this method for various types of molecules. We studied the sensitivity of the film conductivity to the type of the molecule entrapped within the film, to its concentration, and to temperature. Dual functionality was demonstrated with CH@Ag films, which are both conductive and have prolonged and high antibacterial activity, a combination of properties that has been unknown so far.
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Affiliation(s)
- Hadas Naor
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem , Jerusalem 91904, Israel
| | - David Avnir
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem , Jerusalem 91904, Israel
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22
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Kumar VB, Gedanken A, Avnir D, Porat Z. Dispersion of Polymers in Metallic Gallium. Chemphyschem 2015; 17:162-9. [DOI: 10.1002/cphc.201500899] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Vijay Bhooshan Kumar
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 52900 Israel), Fax: (+972) 3-7384053
| | - Aharon Gedanken
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 52900 Israel), Fax: (+972) 3-7384053
- Department of Materials Science & Engineering; National Cheng Kung University; Tainan 70101 Taiwan
| | - David Avnir
- Institute of Chemistry & Center for Nanoscience and Nanotechnology; The Hebrew University of Jerusalem; Jerusalem 91904 Israel
| | - Ze'ev Porat
- Division of Chemistry; Nuclear Research Center-Negev; Be'er Sheva 84190 Israel
- Institute of Applied Research; Ben-Gurion University of the Negev, Be'er Sheva; 84105 Israel
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23
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Querejeta-Fernández A, Kopera B, Prado KS, Klinkova A, Methot M, Chauve G, Bouchard J, Helmy AS, Kumacheva E. Circular Dichroism of Chiral Nematic Films of Cellulose Nanocrystals Loaded with Plasmonic Nanoparticles. ACS NANO 2015; 9:10377-85. [PMID: 26336902 DOI: 10.1021/acsnano.5b04552] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In the search for induced chiral plasmonic activity, cholesteric films formed by cellulose nanocrystals have attracted great interest as potential hosts for plasmonic nanoparticles. Circular dichroism (CD) spectra of the composite films exhibit two peaks, one of which is ascribed to the cholesteric host and the other one to plasmonic chiroptical activity of the plasmonic nanoparticles. Here we report the results of comprehensive studies of extinction and CD properties of composite films formed by different types of cellulose nanocrystals and different types of plasmonic nanoparticles. We show that the second peak in the CD spectra acquired using CD spectrometers appears as the result of the local reduction of the CD signal of the host material, due to excessive absorption by the nanoparticles, and thus it cannot be interpreted as induced plasmonic chiroptical activity. Instead, we propose an alternative way to measure CD spectra of plasmonic cholesteric films by using Mueller matrix transmission ellipsometry. The results of this study are important for ongoing research in the field of chiral plasmonics and for the optical characterization of a broad range of chiral nematic nanostructured materials.
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Affiliation(s)
- Ana Querejeta-Fernández
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Bernd Kopera
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Karen S Prado
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Anna Klinkova
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Myriam Methot
- FPInnovations , 570 St. Jean Boulevard, Pointe-Claire, QC H9R 3J9, Canada
| | - Grégory Chauve
- FPInnovations , 570 St. Jean Boulevard, Pointe-Claire, QC H9R 3J9, Canada
| | - Jean Bouchard
- FPInnovations , 570 St. Jean Boulevard, Pointe-Claire, QC H9R 3J9, Canada
| | - Amr S Helmy
- The Edward S. Rogers Sr. Department of Electrical and Computer Engineering and the Institute of Optical Sciences, University of Toronto , Toronto, Ontario M5S 3G4, Canada
| | - Eugenia Kumacheva
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto , 200 College Street, Toronto, Ontario M5S 3E5, Canada
- The Institute of Biomaterials and Biomedical Engineering, University of Toronto , 4 Taddle Creek Road, Toronto, Ontario M5S 3G9, Canada
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Shapiro L, Driess M, Avnir D. Dual Catalytic Activity of Palladium Doped with a Rhodium Complex in a One-pot, Four Step Process. ChemCatChem 2015. [DOI: 10.1002/cctc.201500240] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Yang HP, Wang H, Lu JX. Alkaloid-induced asymmetric hydrogenation on a Cu nanoparticle cathode by electrochemical conditions. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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26
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Arnaboldi S, Benincori T, Cirilli R, Kutner W, Magni M, Mussini PR, Noworyta K, Sannicolò F. Inherently chiral electrodes: the tool for chiral voltammetry. Chem Sci 2015; 6:1706-1711. [PMID: 28694945 PMCID: PMC5483848 DOI: 10.1039/c4sc03713h] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 01/13/2015] [Indexed: 12/05/2022] Open
Abstract
2,2'-Bis[2-(5,2'-bithienyl)]-3,3'-bithianaphthene oligomers are a model case of electroactive films endowed with "inherent chirality", originating from a stereogenic element coinciding with the whole electroactive backbone, thus resulting in impressive manifestations. This study highlights their applicative potentialities as low-cost and easy-to-prepare artificial enantiopure electrode surfaces, which display an unprecedented ability to pronouncedly separate voltammetry peaks of enantiomers of quite different chiral probes of applicative interest, concurrently with linear dynamic ranges for peak currents, affording enantiomer excess determination. Thus inherently chiral enantiopure electrodes can indeed be regarded as a key to chiral voltammetry.
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Affiliation(s)
- Serena Arnaboldi
- Università degli Studi di Milano , Dipartimento di Chimica and C.I.Ma.I.NA , via Golgi 19 , 20133 Milano , Italy . ; ; ; Tel: +39 0250314211
| | - Tiziana Benincori
- Dipartimento di Scienza e Alta Tecnologia , Università degli Studi dell'Insubria , via Valleggio 11 , 22100 Como , Italy
| | - Roberto Cirilli
- Dipartimento del Farmaco , Istituto Superiore di Sanità , Viale Regina Elena 299 , 00161 Roma , Italy
| | - Włodzimierz Kutner
- Institute of Physical Chemistry , Polish Academy of Sciences (IPC PAS) , Kasprzaka 44/52 , 01-224 Warsaw , Poland
- Faculty of Mathematics and Natural Sciences , School of Sciences , Cardinal Stefan Wyszynski University in Warsaw , Woycickiego 1/3 , 01-938 Warsaw , Poland
| | - Mirko Magni
- Università degli Studi di Milano , Dipartimento di Chimica and C.I.Ma.I.NA , via Golgi 19 , 20133 Milano , Italy . ; ; ; Tel: +39 0250314211
| | - Patrizia Romana Mussini
- Università degli Studi di Milano , Dipartimento di Chimica and C.I.Ma.I.NA , via Golgi 19 , 20133 Milano , Italy . ; ; ; Tel: +39 0250314211
| | - Krzysztof Noworyta
- Institute of Physical Chemistry , Polish Academy of Sciences (IPC PAS) , Kasprzaka 44/52 , 01-224 Warsaw , Poland
| | - Francesco Sannicolò
- Università degli Studi di Milano , Dipartimento di Chimica and C.I.Ma.I.NA , via Golgi 19 , 20133 Milano , Italy . ; ; ; Tel: +39 0250314211
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27
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Yang HP, Yue YN, Sun QL, Feng Q, Wang H, Lu JX. Entrapment of a chiral cobalt complex within silver: a novel heterogeneous catalyst for asymmetric carboxylation of benzyl bromides with CO2. Chem Commun (Camb) 2015; 51:12216-9. [DOI: 10.1039/c5cc04554a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel way to accommodate heterogeneous catalysis, CO2fixation and asymmetric synthesis on one catalyst is reported.
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Affiliation(s)
- Heng-Pan Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Ying-Na Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Qi-Long Sun
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Qiu Feng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Huan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
| | - Jia-Xing Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- China
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