1
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Seifert TJ, Stritzke M, Kasten P, Möller B, Fingscheidt T, Etzkorn M, de Wolff T, Schlickum U. Chirality Detection in Scanning Tunneling Microscopy Data Using Artificial Intelligence. SMALL METHODS 2024:e2400549. [PMID: 39248666 DOI: 10.1002/smtd.202400549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 08/15/2024] [Indexed: 09/10/2024]
Abstract
Enantiospecific effects play an uprising role in chemistry and technical applications. Chiral molecular networks formed by self-assembly processes at surfaces can be imaged by scanning probe microscopy (SPM). Low contrast and high noise in the topography map often interfere with the automatic image analysis using classical methods. The long SPM image acquisition times restrain Artificial Intelligence-based methods requiring large training sets, leaving only tedious manual work, inducing human-dependent errors and biased labeling. By generating realistic looking synthetic images, the acquisition of real datasets is avoided. Two state-of-the-art object detection architectures are trained to localize and classify chiral unit-cells in a regular molecular chiral network formed by self-assembly of linear molecular bricks. The comparison of different architectures and datasets demonstrates that the training on purely synthetic data outperforms models trained using augmented datasets. A Faster R-CNN model trained solely on synthetic data achieved an excellent mean average precision of 99% on real data. Hence this approach and the transfer to real data show high success, also highlighting the high robustness against experimental noise and different zoom levels across the full experimentally reasonable parameter range. The generalizability of this idea is demonstrated by achieving equally high performance on a different structure, too.
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Affiliation(s)
- Tim J Seifert
- Institute of Applied Physics, TU Braunschweig, 38106, Braunschweig, Germany
| | - Mandy Stritzke
- Institute of Analysis and Algebra, TU Braunschweig, 38106, Braunschweig, Germany
| | - Peer Kasten
- Institute of Applied Physics, TU Braunschweig, 38106, Braunschweig, Germany
| | - Björn Möller
- Institute for Communications Technology, TU Braunschweig, 38106, Braunschweig, Germany
| | - Tim Fingscheidt
- Institute for Communications Technology, TU Braunschweig, 38106, Braunschweig, Germany
| | - Markus Etzkorn
- Institute of Applied Physics, TU Braunschweig, 38106, Braunschweig, Germany
- Laboratory for Emerging Nanometrology, TU Braunschweig, 38106, Braunschweig, Germany
| | - Timo de Wolff
- Institute of Analysis and Algebra, TU Braunschweig, 38106, Braunschweig, Germany
| | - Uta Schlickum
- Institute of Applied Physics, TU Braunschweig, 38106, Braunschweig, Germany
- Laboratory for Emerging Nanometrology, TU Braunschweig, 38106, Braunschweig, Germany
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2
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Abdelmaqsoud K, Radetic M, Fernández-Cabán C, Widom M, Kitchin JR, Gellman AJ. Structure Sensitive Reaction Kinetics of Chiral Molecules on Intrinsically Chiral Surfaces. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:13879-13887. [PMID: 39193257 PMCID: PMC11345842 DOI: 10.1021/acs.jpcc.4c04224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/25/2024] [Accepted: 07/29/2024] [Indexed: 08/29/2024]
Abstract
Enantiospecific heterogeneous catalysis utilizes chiral surfaces to resolve enantiomers via structure sensitive surface chemistry. The catalyst design challenge is the identification of chiral surface structures that maximize enantiospecificity. Herein, we develop data driven models for the enantiospecificity of tartaric acid reactions on chiral Cu(hkl)R&S surfaces. Measurements of enantiospecific rate constants were obtained by using curved Cu(hkl)R&S surfaces that enable kinetic measurements on hundreds of chiral surface orientations. One model uses feature vectors derived from generalized coordination numbers to capture the local structure around Cu atoms exposed by the Cu(hkl)R&S surfaces. The second model introduces the use of chiral cubic harmonic functions to capture the symmetry constraints of the face-centered cubic Cu structure. The model using 58 generalized coordination numbers has a fitting error similar to that of the model using only 5 cubic harmonic functions. The two models predict maxima in the enantiospecificity on surfaces with very similar surface orientations. The models developed in this work are applicable for any enantiospecific reaction happening on any chiral material with a cubic lattice structure, opening the way to understanding the surface structure sensitivity of the enantiospecific reaction kinetics.
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Affiliation(s)
- Kareem Abdelmaqsoud
- Department
of Chemical Engineering and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
| | - Michael Radetic
- Department
of Chemical Engineering and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
| | - Carlos Fernández-Cabán
- Department
of Chemical Engineering and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
| | - Michael Widom
- Department
of Chemical Engineering and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
| | - John R. Kitchin
- Department
of Chemical Engineering and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew J. Gellman
- Department
of Chemical Engineering and Department of Physics, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, Pennsylvania 15213, United States
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3
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Daniels AS, Gellman AJ, Sykes ECH. Atomic-scale origin of the enantiospecific decomposition of tartaric acid on chiral copper surfaces. Chem Commun (Camb) 2024; 60:8383-8386. [PMID: 38958572 DOI: 10.1039/d4cc02384f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
The origin of the enantiospecific decomposition of L- and D-tartaric acid on chiral Cu surfaces is elucidated on a structure-spread domed Cu(110) crystal by spatially resolved XPS and atomic-scale STM imaging. Extensive enantiospecific surface restructuring leads to the formation of surfaces vicinal to Cu(14,17,2) which are responsible for the enantiospecificity.
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Affiliation(s)
- Avery S Daniels
- Department of Chemistry, Tufts University, Medford, MA 02155, USA.
| | - Andrew J Gellman
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15123, USA
- W.E. Scott Institute of Energy Innovation, Carnegie Mellon University, Pittsburgh, PA 15123, USA
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4
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Voigt J, Hasan M, Wäckerlin C, Karnik AV, Ernst KH. Switching the on-surface orientation of oxygen-functionalized helicene. Chirality 2024; 36:e23642. [PMID: 38384155 DOI: 10.1002/chir.23642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/28/2023] [Accepted: 12/28/2023] [Indexed: 02/23/2024]
Abstract
Helicenes represent an important class of chiral organic material with promising optoelectronic properties. Hence, functionalization of surfaces with helicenes is a key step toward new organic materials devices. The deposition of a heterohelicene containing two furano groups and two hydroxyl groups onto copper(111) surface in ultrahigh vacuum leads to different adsorbate modifications. At low coverage and low temperature, the molecules tend to lie on the surface in order to maximize van der Waals contact with the substrate. Thermal treatment leads to deprotonation of the hydroxyl groups and in part into a reorientation from lying into a standing adsorbate mode.
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Affiliation(s)
- Jan Voigt
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - Mohammed Hasan
- Department of Chemistry, University of Mumbai, Mumbai, India
| | - Christian Wäckerlin
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
- Institute of Physics, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
- Laboratory for X-ray Nanoscience and Technologies, Paul-Scherrer-Institut (PSI), Villigen, Switzerland
| | - Anil V Karnik
- Department of Chemistry, University of Mumbai, Mumbai, India
| | - Karl-Heinz Ernst
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
- Department of Chemistry, University of Zurich, Zürich, Switzerland
- Nanosurf Lab, Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic
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5
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Bera A, Henkel S, Mieres‐Perez J, Andargie Tsegaw Y, Sanchez‐Garcia E, Sander W, Morgenstern K. Surface Diffusion Aided by a Chirality Change of Self-Assembled Oligomers under 2D Confinement. Angew Chem Int Ed Engl 2022; 61:e202212245. [PMID: 36056533 PMCID: PMC9827888 DOI: 10.1002/anie.202212245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Indexed: 01/12/2023]
Abstract
Chirality switching of self-assembled molecular structures is of potential interest for designing functional materials but is restricted by the strong interaction between the embedded molecules. Here, we report on an unusual approach based on reversible chirality changes of self-assembled oligomers using variable-temperature scanning tunneling microscopy supported by quantum mechanical calculations. Six functionalized diazomethanes each self-assemble into chiral wheel-shaped oligomers on Ag(111). At 130 K, a temperature far lower than expected, the oligomers change their chirality even though the molecules reside in an embedded self-assembled structure. Each chirality change is accompanied by a slight center-of-mass shift. We show how the identical activation energies of the two processes result from the interplay of the chirality change with surface diffusion, findings that open the possibility of implementing various functional materials from self-assembled supramolecular structures.
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Affiliation(s)
- Abhijit Bera
- Physikalische Chemie IRuhr-Universität BochumUniversitätsstr. 15044801BochumGermany
| | - Stefan Henkel
- Organic Chemistry IIRuhr-Universität BochumUniversitätsstr. 15044801BochumGermany
| | - Joel Mieres‐Perez
- Computational BiochemistryUniversität Duisburg-EssenUniversitätsstr. 245141EssenGermany
| | | | - Elsa Sanchez‐Garcia
- Computational BiochemistryUniversität Duisburg-EssenUniversitätsstr. 245141EssenGermany
| | - Wolfram Sander
- Organic Chemistry IIRuhr-Universität BochumUniversitätsstr. 15044801BochumGermany
| | - Karina Morgenstern
- Physikalische Chemie IRuhr-Universität BochumUniversitätsstr. 15044801BochumGermany
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6
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Bera A, Henkel S, Mieres-Perez J, Tsegaw YA, Sanchez-Garcia E, Sander W, Morgenstern K. Surface Diffusion Aided by a Chirality Change of Self‐Assembled Oligomers under 2D Confinement. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Abhijit Bera
- Midnapore College Physics Raja Bajar Main Rd. 721101 Midnapore INDIA
| | - Stefan Henkel
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Organic Chemistry II GERMANY
| | - Joel Mieres-Perez
- University of Duisburg-Essen: Universitat Duisburg-Essen Computational Biochemistry GERMANY
| | | | - Elsa Sanchez-Garcia
- University of Duisburg-Essen: Universitat Duisburg-Essen Computational Biochemistry GERMANY
| | - Wolfram Sander
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Organic Chemistry II GERMANY
| | - Karina Morgenstern
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Physical Chemistry I GERMANY
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7
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Cai J, Zhao J, Gao X, Ma W, Meng D, Zhang H, Hao C, Sun M, Kuang H, Xu C, Xu L. Magnetic Field Tuning Ionic Current Generated by Chiromagnetic Nanofilms. ACS NANO 2022; 16:11066-11075. [PMID: 35776106 DOI: 10.1021/acsnano.2c03778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The realization of chiral magnetic effect by macroscopically manipulating quantum states of chiral matter under the magnetic field makes a future for information transmission, memory storage, magnetic cooling materials etc., while the microscopic tiny signal differences of at the interface electrons are laborious to be discerned. Here, chiromagnetic iron oxide (Fe3O4) nanofilms were successfully prepared by modulating the magnetic and electrical transition dipoles and combined with confined ion transport, enabling magnetic field-tunable ionic currents with markedly ∼7.91-fold higher for l-tartaric acid (TA)-modified Fe3O4 nanofilms than that by d-TA. The apparent amplification results from the charge redistribution at the ferromagnetic-organic interface under the influence of the chiral magnetic effect, resulting in a significant potential difference across the nanofilms that drive ion transport in the confined environment. This strategy, on the one hand, makes it possible to efficiently characterize the electronic microimbalance state in chiral substances induced by the magnetic field and, on the other hand realizes the discrimination and highly sensitive quantitative detection of chiral drug enantiomers, which give insights for the in-depth understanding of chiral magnetic effects and efficient enantiomeric recognition.
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Affiliation(s)
- Jiarong Cai
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Jing Zhao
- Department of Radiology, Affiliated Hospital, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Xiaoqing Gao
- Wenzhou Institute, University of Chinese Academy of Sciences, and Oujiang Laboratory, Wenzhou, Zhejiang 325001, P. R. China
| | - Wei Ma
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Dan Meng
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Hongyu Zhang
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Changlong Hao
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Maozhong Sun
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Hua Kuang
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Chuanlai Xu
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Liguang Xu
- International Joint Research Laboratory for Biointerface and Biodetection, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
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8
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Han Q, Li Z, Sun K, Tao ML, Shi MX, Yang DX, Xia JX, Wan JJ, Wang JZ. Spontaneous chiral resolution of pentahelicene molecules on Cd(0001). Phys Chem Chem Phys 2022; 24:10292-10296. [PMID: 35437551 DOI: 10.1039/d2cp00778a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral resolution is of fundamental importance to conglomerate or racemate crystallization. Here we demonstrate that the spontaneous chiral resolution of pentahelicene racemates occurred in the monolayer domains. When deposited on a Cd(0001) surface, pentahelicene molecules crystallize into a commensurate (6 × 6)R0° structure built mainly from homochiral trimers. Spontaneous chirality separation takes place in the form of opposite mirror domains, where 2D enantiomorphism is not expressed by the oblique adlattice, but by the supramolecular chirality of the pentahelicene trimers. Furthermore, annealing the sample or extreme close-packing lead to the presence of lattice handedness through the formation of a porous network structure or an edge-on phase. These results provide valuable insight for 2D conglomerate crystallization and stereochemical recognition.
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Affiliation(s)
- Qing Han
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Zuo Li
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Kai Sun
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Min-Long Tao
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Ming-Xia Shi
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Da-Xiao Yang
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Jing-Xiang Xia
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Jia-Jie Wan
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
| | - Jun-Zhong Wang
- School of Physical Science and Technology & Chongqing Key Laboratory of Micro&Nano Structure Optoelectronics, Southwest University, Chongqing 400715, China.
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9
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Pinna EG, Toro N, Gallegos S, Rodriguez MH. A Novel Recycling Route for Spent Li-Ion Batteries. MATERIALS (BASEL, SWITZERLAND) 2021; 15:44. [PMID: 35009191 PMCID: PMC8746145 DOI: 10.3390/ma15010044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/14/2021] [Accepted: 12/17/2021] [Indexed: 06/02/2023]
Abstract
In this work, a recycling route for spent Li-ion batteries (LIBs) was developed. For this, the recovery of the metal content in both electrodes (anode and cathode) was investigated. Based on these results, an economic analysis of this recycling process was carried out. The obtained results showed that more than 90% of the material contained in both electrodes was recycled. The dissolution with acetic acid of the metals present in the active cathodic material is thermodynamically viable and the addition of a reducing agent such as hydrogen peroxide improved the spontaneity of the reaction. Dissolutions close to 100% for Li and Co were obtained. In addition, it was determined that the synthesis of lithium and cobalt valuable compounds was viable from the leach liquor, recovering approximately 90% of Co as cobalt oxalate, and 92% of Li as lithium carbonate. Furthermore, carbon graphite and Cu were fully recovered (100%) from the anodes. Finally, the results of the economic analysis showed that the recovered products have a high commercial value and industrial interest, providing an environmentally and economically viable process.
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Affiliation(s)
- Eliana G. Pinna
- Laboratorio de Metalurgia Extractiva y Síntesis de Materiales (MESiMat), ICB, UNCuyo, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas y Naturales, Padre Contreras 1300, Parque General San Martín, Mendoza CP M5502JMA, Argentina;
- Cátedra de Química Analítica, Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Almirante Brown 500, Chacras de Coria, Luján de Cuyo, Mendoza CPA M5528AHB, Argentina
| | - Norman Toro
- Faculty of Engineering and Architecture, Universidad Arturo Prat, Iquique 1100000, Chile; (N.T.); (S.G.)
| | - Sandra Gallegos
- Faculty of Engineering and Architecture, Universidad Arturo Prat, Iquique 1100000, Chile; (N.T.); (S.G.)
| | - Mario H. Rodriguez
- Laboratorio de Metalurgia Extractiva y Síntesis de Materiales (MESiMat), ICB, UNCuyo, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas y Naturales, Padre Contreras 1300, Parque General San Martín, Mendoza CP M5502JMA, Argentina;
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10
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Sharifzadeh Z, Berijani K, Morsali A. High performance of ultrasonic-assisted synthesis of two spherical polymers for enantioselective catalysis. ULTRASONICS SONOCHEMISTRY 2021; 73:105499. [PMID: 33667905 PMCID: PMC7937831 DOI: 10.1016/j.ultsonch.2021.105499] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/02/2021] [Accepted: 02/16/2021] [Indexed: 05/11/2023]
Abstract
Chiral polymers have aroused great attention in among chiral supramolecular materials based on their features. Herein, for the first time, the synthesis of chiral polymeric composites (CMNPs/1,4-Zbtb & 1,3-Zbtb) have been reported with entrapment through three strategies: ultrasonic irradiation, solvothermal, and mechanical stirring. According to the obtained results, it is found that ultrasound-assisted synthesis can be considered as an inexpensive and efficient method than the others, from the point ofviewof energy and time consuming. In this strategy, encapsulation of chiral magnetic nanoparticles (CMNPs) by using tetrazole-based polymers (Zbtbs) happens, in-situly. These chiral sphere-like inorganic-organic polymers can be considered as core and shell composites with catalytic activity due to their acidic (semi unsaturated Zn: open metal sites) and basic (abundant basic nitrogens) centers. In these structures, the unprecedented chirality induction can happen from the core to shell by non-covalent interaction, easily. They could catalyze symmetric oxidation and asymmetric henry condensation to give chiral β-nitroalkanol. Circular dichroism and chiral gas chromatography were used to characterize the produced enantiomers. These chiral polymeric materials can be considered as unique acid-base bifunctional catalysts with efficient properties such as high stability, enantiomeric excess, enantioselectivity to the main product, and protecting from CMNPs leaching.
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Affiliation(s)
- Zahra Sharifzadeh
- Department of Chemistry, Faculty of Sciences, TarbiatModares University, P.O. Box 14117-13116, Tehran, Islamic Republic of Iran
| | - Kayhaneh Berijani
- Department of Chemistry, Faculty of Sciences, TarbiatModares University, P.O. Box 14117-13116, Tehran, Islamic Republic of Iran
| | - Ali Morsali
- Department of Chemistry, Faculty of Sciences, TarbiatModares University, P.O. Box 14117-13116, Tehran, Islamic Republic of Iran.
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11
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Butcha S, Assavapanumat S, Ittisanronnachai S, Lapeyre V, Wattanakit C, Kuhn A. Nanoengineered chiral Pt-Ir alloys for high-performance enantioselective electrosynthesis. Nat Commun 2021; 12:1314. [PMID: 33637758 PMCID: PMC7910542 DOI: 10.1038/s41467-021-21603-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/01/2021] [Indexed: 11/16/2022] Open
Abstract
The design of efficient chiral catalysts is of crucial importance since it allows generating enantiomerically pure compounds. Tremendous efforts have been made over the past decades regarding the development of materials with enantioselective properties for various potential applications ranging from sensing to catalysis and separation. Recently, chiral features have been generated in mesoporous metals. Although these monometallic matrices show interesting enantioselectivity, they suffer from rather low stability, constituting an important roadblock for applications. Here, a straightforward strategy to circumvent this limitation by using nanostructured platinum-iridium alloys is presented. These materials can be successfully encoded with chiral information by co-electrodeposition from Pt and Ir salts in the simultaneous presence of a chiral compound and a lyotropic liquid crystal as asymmetric template and mesoporogen, respectively. The alloys enable a remarkable discrimination between chiral compounds and greatly improved enantioselectivity when used for asymmetric electrosynthesis (>95 %ee), combined with high electrochemical stability.
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Affiliation(s)
- Sopon Butcha
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 33607, Pessac, France
- School of Molecular Science and Engineering and School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210, Rayong, Thailand
| | - Sunpet Assavapanumat
- School of Molecular Science and Engineering and School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210, Rayong, Thailand
| | - Somlak Ittisanronnachai
- School of Molecular Science and Engineering and School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210, Rayong, Thailand
| | - Veronique Lapeyre
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 33607, Pessac, France
| | - Chularat Wattanakit
- School of Molecular Science and Engineering and School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210, Rayong, Thailand.
| | - Alexander Kuhn
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, 33607, Pessac, France.
- School of Molecular Science and Engineering and School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, 21210, Rayong, Thailand.
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12
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Irziqat B, Berger J, Mendieta-Moreno JI, Sundar MS, Bedekar AV, Ernst KH. Transition from Homochiral Clusters to Racemate Monolayers during 2D Crystallization of Trioxa[11]helicene on Ag(100). Chemphyschem 2021; 22:293-297. [PMID: 33289221 DOI: 10.1002/cphc.202000853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/24/2020] [Indexed: 11/06/2022]
Abstract
The phenomenon of chiral crystallization into homochiral crystals is known for more than 170 years, yet it is still poorly understood. Studying crystallization on surfaces under well-defined condition seems a promising approach towards better understanding the intermolecular chiral recognition mechanisms during nucleation and growth. The two-dimensional aggregation of racemic trioxaundecahelicene on the single crystalline silver(100) surface has been investigated with scanning tunneling microscopy and with non-contact atomic force microscopy, as well as molecular modeling simulations. A transition from homochiral cluster motifs to heterochiral assembly into large islands with increasing coverage is observed. Force field modelling confirms higher stability of heterochiral arrangements from twelve molecules on. Results are discussed with respect to previous findings for the all-carbon heptahelicene on the same surface.
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Affiliation(s)
- Bahaaeddin Irziqat
- Surface Science and Coating Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Jan Berger
- Surface Science and Coating Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland.,Nanosurf Laboratory, Institute of Physics, The Czech Academy of Sciences, Cukrovarnická 10, 162 00, Prague, Czech Republic
| | - Jesús I Mendieta-Moreno
- Nanosurf Laboratory, Institute of Physics, The Czech Academy of Sciences, Cukrovarnická 10, 162 00, Prague, Czech Republic
| | - Mothuku Shyam Sundar
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague, Czech Republic
| | - Ashutosh V Bedekar
- Department of Chemistry, The Maharaja Sayajirao University of Baroda, Vadodara, 390 002, India
| | - Karl-Heinz Ernst
- Surface Science and Coating Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland.,Nanosurf Laboratory, Institute of Physics, The Czech Academy of Sciences, Cukrovarnická 10, 162 00, Prague, Czech Republic
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13
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Lin C, Darling GR, Forster M, McBride F, Massey A, Hodgson A. Hydration of a 2D Supramolecular Assembly: Bitartrate on Cu(110). J Am Chem Soc 2020; 142:13814-13822. [PMID: 32692550 PMCID: PMC7458425 DOI: 10.1021/jacs.0c04747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
![]()
Hydration
layers play a key role in many technical and biological
systems, but our understanding of these structures remains very limited.
Here, we investigate the molecular processes driving hydration of
a chiral metal–organic surface, bitartrate on Cu(110), which
consists of hydrogen-bonded bitartrate rows separated by exposed Cu.
Initially water decorates the metal channels, hydrogen bonding to
the exposed O ligands that bind bitartrate to Cu, but does not wet
the bitartrate rows. At higher temperature, water inserts into the
structure, breaks the existing intermolecular hydrogen bonds, and
changes the adsorption site and footprint. Calculations show this
process is driven by the creation of stable adsorption sites between
the carboxylate ligands, to allow hydration of O–Cu ligands
within the interior of the structure. This work suggests that hydration
of polar metal–adsorbate ligands will be a dominant factor
in many systems during surface hydration or self-assembly from solution.
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Affiliation(s)
- Chenfang Lin
- Surface Science Research Centre and Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - George R Darling
- Surface Science Research Centre and Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - Matthew Forster
- Surface Science Research Centre and Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - Fiona McBride
- Surface Science Research Centre and Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - Alan Massey
- Surface Science Research Centre and Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
| | - Andrew Hodgson
- Surface Science Research Centre and Department of Chemistry, University of Liverpool, Liverpool L69 3BX, United Kingdom
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14
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Suttipat D, Butcha S, Assavapanumat S, Maihom T, Gupta B, Perro A, Sojic N, Kuhn A, Wattanakit C. Chiral Macroporous MOF Surfaces for Electroassisted Enantioselective Adsorption and Separation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36548-36557. [PMID: 32683858 DOI: 10.1021/acsami.0c09816] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of surfaces with chiral features is a fascinating challenge for modern materials science, especially when they are used for chiral separation technologies. In this contribution, the design of hierarchically structured chiral macroporous zeolitic imidazolate framework-8 (ZIF-8) electrodes is presented. They are elaborated by an electrochemical deposition-dissolution technique based on the electrodeposition of metal through a colloidal crystal template, followed by controlled electrooxidation. This generates locally metal cations, which can interact with a chiral ligand present in the solution to form metal-organic frameworks (MOFs). The macroporous structure facilitates the access of the chiral recognition sites, located in the mesoporous MOF, and thus helps to overcome mass transport limitations. The efficiency of the designed functional materials for chiral adsorption and separation can be fine-tuned by applying an adjustable electric potential to the electrode surfaces. This hierarchical chiral ZIF-8 structure was deposited at the walls of a microfluidic device and used as a stationary phase for enantioselective separation. The potential-controlled interaction between the stationary phase and the chiral analytes allows baseline separation of two enantiomers. This opens up interesting perspectives for using hierarchically structured chiral MOFs as an efficient material for the selective adsorption and separation of chiral compounds.
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Affiliation(s)
- Duangkamon Suttipat
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
| | - Sopon Butcha
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Sunpet Assavapanumat
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Thana Maihom
- Department of Chemistry, Faculty of Liberal Arts and Science, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand
| | - Bhavana Gupta
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Adeline Perro
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Neso Sojic
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Alexander Kuhn
- University of Bordeaux, CNRS UMR 5255, Bordeaux INP, Site ENSCBP, Pessac 33607, France
| | - Chularat Wattanakit
- School of Energy Science and Engineering, School of Molecular Science and Engineering, and Nanocatalysts and Nanomaterials for Sustainable Energy and Environment Research Network of NANOTEC, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand
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15
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Possible Physical Basis of Mirror Symmetry Effect in Racemic Mixtures of Enantiomers: From Wallach’s Rule, Nonlinear Effects, B–Z DNA Transition, and Similar Phenomena to Mirror Symmetry Effects of Chiral Objects. Symmetry (Basel) 2020. [DOI: 10.3390/sym12060889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Effects associated with mirror symmetry may be underlying for a number of phenomena in chemistry and physics. Increase in the density and melting point of the 50%L/50%D collection of enantiomers of a different sign (Wallach’s rule) is probably based on a physical effect of the mirror image. The catalytic activity of metal complexes with racemic ligands differs from the corresponding complexes with enantiomers as well (nonlinear effect). A similar difference in the physical properties of enantiomers and racemate underlies L/D inversion points of linear helical macromolecules, helical nanocrystals of magnetite and boron nitride etc., B–Z DNA transition and phenomenon of mirror neurons may have a similar nature. Here we propose an explanation of the Wallach effect along with some similar chemical, physical, and biological phenomena related to mirror image.
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16
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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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17
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Dutta S, Gellman AJ. Enantiomer surface chemistry: conglomerate versus racemate formation on surfaces. Chem Soc Rev 2018; 46:7787-7839. [PMID: 29165467 DOI: 10.1039/c7cs00555e] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Research on surface chirality is motivated by the need to develop functional chiral surfaces for enantiospecific applications. While molecular chirality in 3D has been the subject of study for almost two centuries, many aspects of 2D chiral surface chemistry have yet to be addressed. In 3D, racemic mixtures of chiral molecules tend to aggregate into racemate (molecularly heterochiral) crystals much more frequently than conglomerate (molecularly homochiral) crystals. Whether chiral adsorbates on surfaces preferentially aggregate into heterochiral rather than homochiral domains (2D crystals or clusters) is not known. In this review, we have made the first attempt to answer the following question based on available data: in 2D racemic mixtures adsorbed on surfaces, is there a clear preference for homochiral or heterochiral aggregation? The current hypothesis is that homochiral packing is preferred on surfaces; in contrast to 3D where heterochiral packing is more common. In this review, we present a simple hierarchical scheme to categorize the chirality of adsorbate-surface systems. We then review the body of work using scanning tunneling microscopy predominantly to study aggregation of racemic adsorbates. Our analysis of the existing literature suggests that there is no clear evidence of any preference for either homochiral or heterochiral aggregation at the molecular level by chiral and prochiral adsorbates on surfaces.
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Affiliation(s)
- Soham Dutta
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
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18
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Rieger A, Sax C, Bauert T, Wäckerlin C, Ernst KH. Chiral molecules adsorbed on a solid surface: Tartaric acid diastereomers and their surface explosion on Cu(111). Chirality 2018; 30:369-377. [DOI: 10.1002/chir.22819] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/22/2017] [Accepted: 12/28/2017] [Indexed: 01/15/2023]
Affiliation(s)
- Alexandra Rieger
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Dübendorf Switzerland
| | - Cédric Sax
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Dübendorf Switzerland
| | - Tobias Bauert
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Dübendorf Switzerland
| | - Christian Wäckerlin
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Dübendorf Switzerland
| | - Karl-Heinz Ernst
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Dübendorf Switzerland
- Department of Chemistry; University of Zurich; Zürich Switzerland
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19
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Zhou X, Dai J, Wu K. Steering on-surface reactions with self-assembly strategy. Phys Chem Chem Phys 2018; 19:31531-31539. [PMID: 29171852 DOI: 10.1039/c7cp06177c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The control of assembly structures that subsequently help achieve viable functionalities has been one of the key motivations for the exploration of surface molecular assembly. In terms of its functionality and applicability, the assembly is explored as a strategy to steer on-surface reactions primarily by two methods: assembly-assisted and assembly-involved reactions. The functions of the self-assembly strategy are threefold: tweaking reaction selectivities, steering reaction pathways, and directing reaction sites. The governing principle herein is that the assembly strategy can apply a surface confinement effect that affects the energy barrier and pre-exponential factor of the Arrhenius equation for the dynamics of the target reaction. Development of such a strategy may reveal new routes to steer on-surface reactions and even single molecule properties in surface chemistry.
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Affiliation(s)
- Xiong Zhou
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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20
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Chen W, Zhao W, Wu YN, Wang Y, Zhang B, Li F, Chen Q, Qi Z, Xu Z. Origin of gypsum growth habit difference as revealed by molecular conformations of surface-bound citrate and tartrate. CrystEngComm 2018. [DOI: 10.1039/c8ce00669e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Correlation of the microscopic gypsum–organic interfacial structural information with the macroscopic crystal morphology difference induced by different organic acids.
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Affiliation(s)
- Wei Chen
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Weilong Zhao
- Department of Polymer Science
- The University of Akron
- Akron
- USA
| | - Yi-nan Wu
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Ying Wang
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Bingru Zhang
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Fengting Li
- State Key Lab of Pollution Control and Resource Reuse Study
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P.R. China
| | - Qian Chen
- Department of Orthopaedic Surgery
- Zhongshan Hospital
- Fudan University
- Shanghai 200032
- China
| | - Zeming Qi
- National Synchrotron Radiation Laboratory
- University of Science and Technology of China
- Hefei
- China
| | - Zhijun Xu
- College of Chemical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing 210009
- China
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21
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Turchini S. Conformational effects in photoelectron circular dichroism. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:503001. [PMID: 29087356 DOI: 10.1088/1361-648x/aa9730] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Photoelectron circular dichroism (PECD) is a novel type of spectroscopy, which presents surprising sensitivity to conformational effects in chiral systems. While classical photoelectron spectroscopy mainly responds to conformational effects in terms of energy level shifts, PECD provides a rich and detailed response to tiny changes in electronic and structural properties by means of the intensity dispersion of the circular dichroism as a function of photoelectron kinetic energy. In this work, the basics of PECD will be outlined, emphasizing the role of interference from the [Formula: see text] outgoing partial wave of the photoelectron in the PECD transition matrix element, which is responsible for the extreme sensitivity to conformational effects. Examples using molecular systems and interfaces will shed light on the powerful application of PECD to classical conformational effects such as group substitution, isomerism, conformer population and clustering. Moreover, the PECD results will be reported in challenging new fields where conformations play a key role, such as vibrational effects, transient chirality and time- resolved experiments. To date, PECD has mostly been based on synchrotron radiation facilities, but it also has a future as a table-top lab experiment by means of multiphoton ionization. An important application of PECD as an analytical tool will be reported. The aim of this review is to illustrate that in PECD, the presence of conformational effects is essential for understanding a wide range of effects from a new perspective, making it different from classical spectroscopy.
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Affiliation(s)
- S Turchini
- Istituto di Struttura della Materia-CNR (ISM-CNR), Via del Fosso del Cavaliere 100, 00133 Roma, Italy
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22
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Samperi M, Hirsch BE, Diaz Fernandez YA. Exploring the science of thinking independently together: Faraday Discussion Volume 204 - Complex Molecular Surfaces and Interfaces, Sheffield, UK, July 2017. Chem Commun (Camb) 2017; 53:12601-12607. [PMID: 29139496 DOI: 10.1039/c7cc90389h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The 2017 Faraday Discussion on Complex Molecular Surfaces and Interfaces brought together theoreticians and experimentalists from both physical and chemical backgrounds to discuss the relevant applied and fundamental research topics within the broader field of chemical surface analysis and characterization. Main discussion topics from the meeting included the importance of "disordered" two-dimensional (2D) molecular structures and the utility of kinetically trapped states. An emerging need for new experimental tools to address dynamics and kinetic pathways involved in self-assembled systems, as well as the future prospects and current limitations of in silico studies were also discussed. The following article provides a brief overview of the work presented and the challenges discussed during the meeting.
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Affiliation(s)
- M Samperi
- GSK Carbon Neutral Laboratories for Sustainable Chemistry, The University of Nottingham, Triumph Road, NG7 2TU, UK.
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23
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Abstract
In the present review we survey the main advances made in recent years on the understanding of chemical chirality at solid surfaces. Chirality is an important topic, made particularly relevant by the homochiral nature of the biochemistry of life on Earth, and many chiral chemical reactions involve solid surfaces. Here we start our discussion with a description of surface chirality and of the different ways that chirality can be bestowed on solid surfaces. We then expand on the studies carried out to date to understand the adsorption of chiral compounds at a molecular level. We summarize the work published on the adsorption of pure enantiomers, of enantiomeric mixtures, and of prochiral molecules on chiral and achiral model surfaces, especially on well-defined metal single crystals but also on other flat substrates such as highly ordered pyrolytic graphite. Several phenomena are identified, including surface reconstruction and chiral imprinting upon adsorption of chiral agents, and the enhancement or suppression of enantioselectivity seen in some cases upon adsorption of enantiomixtures of chiral compounds. The possibility of enhancing the enantiopurity of adsorbed layers upon the addition of chiral seeds and the so-called "sergeants and soldiers" phenomenon are presented. Examples are provided where the chiral behavior has been associated with either thermodynamic or kinetic driving forces. Two main approaches to the creation of enantioselective surface sites are discussed, namely, via the formation of supramolecular chiral ensembles made out of small chiral adsorbates, and by adsorption of more complex chiral molecules capable of providing suitable chiral environments for reactants by themselves, via the formation of individual adsorbate:modifier adducts on the surface. Finally, a discussion is offered on the additional effects generated by the presence of the liquid phase often required in practical applications such as enantioselective crystallization, chiral chromatography, and enantioselective catalysis.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, CA 92521, USA.
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24
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Affiliation(s)
- Liguo Ma
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Yuanyuan Cao
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Yingying Duan
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- Present address: School of Chemical Science and Engineering; Tongji University; 1239 Siping Road, Shanghai China 200092 P.R. China
| | - Lu Han
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- Present address: School of Chemical Science and Engineering; Tongji University; 1239 Siping Road, Shanghai China 200092 P.R. China
| | - Shunai Che
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- Present address: School of Chemical Science and Engineering; Tongji University; 1239 Siping Road, Shanghai China 200092 P.R. China
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25
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Ma L, Cao Y, Duan Y, Han L, Che S. Silver Films with Hierarchical Chirality. Angew Chem Int Ed Engl 2017; 56:8657-8662. [DOI: 10.1002/anie.201701994] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/20/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Liguo Ma
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Yuanyuan Cao
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
| | - Yingying Duan
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- Present address: School of Chemical Science and Engineering; Tongji University; 1239 Siping Road, Shanghai China 200092 P.R. China
| | - Lu Han
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- Present address: School of Chemical Science and Engineering; Tongji University; 1239 Siping Road, Shanghai China 200092 P.R. China
| | - Shunai Che
- School of Chemistry and Chemical Engineering; State Key Laboratory of Metal Matrix Composites; Shanghai Jiao Tong University; 800 Dongchuan Road Shanghai 200240 P.R. China
- Present address: School of Chemical Science and Engineering; Tongji University; 1239 Siping Road, Shanghai China 200092 P.R. China
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26
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Lidor-Shalev O, Pliatsikas N, Carmiel Y, Patsalas P, Mastai Y. Chiral Metal-Oxide Nanofilms by Cellulose Template Using Atomic Layer Deposition Process. ACS NANO 2017; 11:4753-4759. [PMID: 28430409 DOI: 10.1021/acsnano.7b01051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this article, we describe an advance approach for the fabrication of chiral metal-oxide nanofilms. Our approach is based on the atomic layer deposition of titania and alumina nanofilms onto cellulose microfibers, used as chiral templates, leading to the formation of chiral nanofilms with a spatial fibrous structure. The chiral nanofilms were extensively characterized by X-ray photoelectron spectroscopy and high-resolution electron microscopy. The chiral property of the produced titania nanofilms was studied by enantioselective adsorption experiments using circular-dichroism spectroscopy and chiral high-performance liquid chromatography. We demonstrate the application of the titania chiral nanofilms for enantioselective crystallization. Overall, the basic principle for the preparation of chiral nanofilms by atomic layer deposition is demonstrated, as well as their uses for several enantioselective applications.
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Affiliation(s)
- Ortal Lidor-Shalev
- Department of Chemistry and the Institute for Nanotechnology and Advanced Materials Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Nikolaos Pliatsikas
- Department of Physics, Aristotle University of Thessaloniki , Thessaloniki 54124, Greece
| | - Yacov Carmiel
- Department of Chemistry and the Institute for Nanotechnology and Advanced Materials Bar-Ilan University , Ramat-Gan 5290002, Israel
| | - Panos Patsalas
- Department of Physics, Aristotle University of Thessaloniki , Thessaloniki 54124, Greece
| | - Yitzhak Mastai
- Department of Chemistry and the Institute for Nanotechnology and Advanced Materials Bar-Ilan University , Ramat-Gan 5290002, Israel
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27
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Darling GR, Forster M, Lin C, Liu N, Raval R, Hodgson A. Chiral segregation driven by a dynamical response of the adsorption footprint to the local adsorption environment: bitartrate on Cu(110). Phys Chem Chem Phys 2017; 19:7617-7623. [DOI: 10.1039/c7cp00622e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Bitartrate, a strongly bound chiral modifier, is able to restructure its adsorption footprint on Cu(110) in response to local adsorbates.
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Affiliation(s)
- G. R. Darling
- Surface Science Research Centre and Department of Chemistry
- University of Liverpool
- Liverpool L69 3BX
- UK
| | - M. Forster
- Surface Science Research Centre and Department of Chemistry
- University of Liverpool
- Liverpool L69 3BX
- UK
| | - C. Lin
- Surface Science Research Centre and Department of Chemistry
- University of Liverpool
- Liverpool L69 3BX
- UK
| | - N. Liu
- Surface Science Research Centre and Department of Chemistry
- University of Liverpool
- Liverpool L69 3BX
- UK
| | - R. Raval
- Surface Science Research Centre and Department of Chemistry
- University of Liverpool
- Liverpool L69 3BX
- UK
| | - A. Hodgson
- Surface Science Research Centre and Department of Chemistry
- University of Liverpool
- Liverpool L69 3BX
- UK
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28
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Méthivier C, Cruguel H, Pradier CM, Humblot V. Supramolecular chiral self-assemblies of Gly–Pro dipeptides on metallic fcc(110) surfaces. Faraday Discuss 2017; 204:69-81. [DOI: 10.1039/c7fd00116a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adsorption of the Glycine–Proline (Gly–Pro) dipeptide has been investigated using surface science complementary techniques on Au(110) and Ag(110), showing some interesting differences both in the chemical form and surface organization of the adsorbed peptide. On Au(110), Gly–Pro mainly adsorbs in neutral form (COOH/NH2), at low coverage or for a short interaction time; the surface species become zwitterionic at a higher coverage or longer interaction time. These changes are accompanied by a complete reorganization of the molecules at the surface. On Ag(110), only anionic molecules (COO−/NH2) were detected on the surface and only one type of arrangement was observed. These results will be compared to some previously obtained on Cu(110), thus providing a unique comparison of the adsorption of the same di-peptide on three different metal surfaces; the great influence of the substrate on both the chemical form and the arrangement of adsorbed di-peptides was made clear.
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Affiliation(s)
- C. Méthivier
- Sorbonne Universités
- UPMC Université Pierre et Marie Curie
- Univ Paris 6
- Laboratoire de Réactivité de Surface
- UMR CNRS 7197
| | - H. Cruguel
- Sorbonne Universités
- UPMC Université Pierre et Marie Curie
- Univ Paris 6
- Institut des NanoScience de Paris
- F-75005 Paris
| | - C.-M. Pradier
- Sorbonne Universités
- UPMC Université Pierre et Marie Curie
- Univ Paris 6
- Laboratoire de Réactivité de Surface
- UMR CNRS 7197
| | - V. Humblot
- Sorbonne Universités
- UPMC Université Pierre et Marie Curie
- Univ Paris 6
- Laboratoire de Réactivité de Surface
- UMR CNRS 7197
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29
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Abstract
Molecules provide versatile building blocks, with a vast palette of functionalities and an ability to assemble via supramolecular and covalent bonding to generate remarkably diverse macromolecular systems. This is abundantly displayed by natural systems that have evolved on Earth, which exploit both supramolecular and covalent protocols to create the machinery of life. Importantly, these molecular assemblies deliver functions that are reproducible, adaptable, finessed and responsive. There is now a real need to translate complex molecular systems to surfaces and interfaces in order to engineer 21st century nanotechnology. ‘Top-down’ and ‘bottom-up’ approaches, and utilisation of supramolecular and covalent assembly, are currently being used to create a range of molecular architectures and functionalities at surfaces. In parallel, advanced tools developed for interrogating surfaces and interfaces have been deployed to capture the complexities of molecular behaviour at interfaces from the nanoscale to the macroscale, while advances in theoretical modelling are delivering insights into the balance of interactions that determine system behaviour. A few examples are provided here that outline molecular behaviour at surfaces, and the level of complexity that is inherent in such systems.
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Affiliation(s)
- R. Raval
- Surface Science Research Centre
- Department of Chemistry
- University of Liverpool
- Liverpool
- UK
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30
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Méthivier C, Cruguel H, Costa D, Pradier CM, Humblot V. Tuning the Surface Chirality of Adsorbed Gly-Pro Dipeptide/Cu(110) by Changing Its Chemical Form via Electrospray Deposition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13759-13763. [PMID: 28024396 DOI: 10.1021/acs.langmuir.6b03553] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
By changing the ultrahigh vacuum (UHV) deposition method, classical sublimation versus electrospray ionization, one can tune the chemistry of a chiral dipeptide molecule (Gly-Pro, GP), when adsorbed on a Cu(110) surface, from anionic to zwitterionic. This chemical shift will influence the adsorption mode of the dipeptide, either in a three-point fashion in the case of anionic GP molecules with a strong interaction among the copper surface, both O atoms of the carboxylate moiety, and the nitrogen atoms, or in the case of zwitterions GP, the adsorption mode relies on the sole interaction of one carboxylate oxygen atom. These different anchoring modes strongly modify the expression of surface 2D chirality and the supramolecular assemblies with two very distinct unit cells.
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Affiliation(s)
| | | | - Dominique Costa
- Physico-Chimie des Surfaces/Institut de Recherches de Chimie Paris, 11 rue Pierre et Marie Curie, 75005 Paris, France
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31
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Cheng F, Leung L, Wang CG, Ji W, Polanyi JC. Retention of chirality in electron-induced reactions. Chem Commun (Camb) 2016; 52:6115-8. [PMID: 27073075 DOI: 10.1039/c6cc00849f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two enantiomers were observed by Scanning Tunneling Microscopy (STM) when meta-iodopyridine was physisorbed on a 4.6 K Cu(110) surface. The chirality of the reagent was retained in the products of the electron-induced reaction. Dynamical calculations showed this to be a consequence of the reaction occurring on one side of the mirror plane.
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Affiliation(s)
- Fang Cheng
- Lash Miller Chemical Laboratories, Department of Chemistry and Institute of Optical Sciences, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
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32
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Mhatre BS, Dutta S, Reinicker A, Karagoz B, Gellman AJ. Explosive enantiospecific decomposition of aspartic acid on Cu surfaces. Chem Commun (Camb) 2016; 52:14125-14128. [DOI: 10.1039/c6cc06887a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
R- and S-enantiomorphs of the Cu(643) surface catalyze the enantiospecific explosive decomposition of d- and l-aspartic acid.
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Affiliation(s)
- B. S. Mhatre
- Department of Chemical Engineering
- Carnegie Mellon University
- Pittsburgh
- USA
| | - S. Dutta
- Department of Chemical Engineering
- Carnegie Mellon University
- Pittsburgh
- USA
| | - A. Reinicker
- Department of Chemical Engineering
- Carnegie Mellon University
- Pittsburgh
- USA
| | - B. Karagoz
- Department of Chemical Engineering
- Carnegie Mellon University
- Pittsburgh
- USA
| | - A. J. Gellman
- Department of Chemical Engineering
- Carnegie Mellon University
- Pittsburgh
- USA
- W.E. Scott Institute for Energy Innovation
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33
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Bouri M, Salghi R, Zougagh M, Ríos A. Enantioselective discrimination of menthone enantiomers by using achiral liquid chromatography with circular dichroism detection and penicillamine-coated gold nanoparticles. Microchem J 2016. [DOI: 10.1016/j.microc.2015.10.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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Zaera F. New advances in the use of infrared absorption spectroscopy for the characterization of heterogeneous catalytic reactions. Chem Soc Rev 2015; 43:7624-63. [PMID: 24424375 DOI: 10.1039/c3cs60374a] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Infrared absorption spectroscopy has proven to be one of the most powerful spectroscopic techniques available for the characterization of catalytic systems. Although the history of IR absorption spectroscopy in catalysis is long, the technique continues to provide key fundamental information about a variety of catalysts and catalytic reactions, and to also offer novel options for the acquisition of new information on both reaction mechanisms and the nature of the solids used as catalysts. In this review, an overview is provided of the main contributions that have been derived from IR absorption spectroscopy studies of catalytic systems, and a discussion is included on new trends and new potential directions of research involving IR in catalysis. We start by briefly describing the power of Fourier-transform IR (FTIR) instruments and the main experimental IR setups available, namely, transmission (TIR), diffuse reflectance (DRIFTS), attenuated total reflection (ATR-IR), and reflection-absorption (RAIRS), for advancing research in catalysis. We then discuss the different environments under which IR characterization of catalysts is carried out, including in situ and operando studies of typical catalytic processes in gas-phase, research with model catalysts in ultrahigh vacuum (UHV) and so-called high-pressure cell instruments, and work involving liquid/solid interfaces. A presentation of the type of information extracted from IR data follows in terms of the identification of adsorbed intermediates, the characterization of the surfaces of the catalysts themselves, the quantitation of IR intensities to extract surface coverages, and the use of probe molecules to identify and titrate specific catalytic sites. Finally, the different options for carrying out kinetic studies with temporal resolution such as rapid-scan FTIR, step-scan FTIR, and the use of tunable lasers or synchrotron sources, and to obtain spatially resolved spectra, by sample rastering or by 2D imaging, are introduced.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
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35
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Cruguel H, Méthivier C, Pradier CM, Humblot V. Surface Chirality of Gly-Pro Dipeptide Adsorbed on a Cu(110) Surface. Chirality 2015; 27:411-6. [DOI: 10.1002/chir.22445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 03/02/2015] [Accepted: 03/02/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Hervé Cruguel
- Sorbonne Universités, UPMC Université Pierre et Marie Curie, Univ Paris 6; Paris France
- Institut des NanoScience de Paris, Université Pierre et Marie Curie, UPMC Paris 6; Paris France
| | - Christophe Méthivier
- Sorbonne Universités, UPMC Université Pierre et Marie Curie, Univ Paris 6; Paris France
- Laboratoire de Réactivité de Surface - UMR CNRS 7197; Université Pierre et Marie Curie, UPMC Paris 6; Paris France
| | - Claire-Marie Pradier
- Sorbonne Universités, UPMC Université Pierre et Marie Curie, Univ Paris 6; Paris France
- Laboratoire de Réactivité de Surface - UMR CNRS 7197; Université Pierre et Marie Curie, UPMC Paris 6; Paris France
| | - Vincent Humblot
- Sorbonne Universités, UPMC Université Pierre et Marie Curie, Univ Paris 6; Paris France
- Laboratoire de Réactivité de Surface - UMR CNRS 7197; Université Pierre et Marie Curie, UPMC Paris 6; Paris France
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36
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Mahapatra M, Tysoe WT. Chemisorptive enantioselectivity of chiral epoxides on tartaric-acid modified Pd(111): three-point bonding. Phys Chem Chem Phys 2015; 17:5450-8. [DOI: 10.1039/c4cp05611f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The chemisorption of two chiral molecules, propylene oxide and glycidol, is studied on tartaric-acid modified Pd(111) surfaces by using temperature-programmed desorption to measure adsorbate coverage.
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Affiliation(s)
- Mausumi Mahapatra
- Department of Chemistry and Laboratory for Surface Studies
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Wilfred T. Tysoe
- Department of Chemistry and Laboratory for Surface Studies
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
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37
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Mahapatra M, Tysoe WT. Adsorption and reaction pathways of a chiral probe molecule, S-glycidol on a Pd(111) surface. Catal Sci Technol 2015. [DOI: 10.1039/c4cy00904e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The chemistry of S-glycidol is studied on a Pd(111) surface using temperature-programmed desorption and reflection–absorption infrared spectroscopy to explore its suitability as a chiral probe molecule and to follow its reaction pathway.
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Affiliation(s)
- Mausumi Mahapatra
- Department of Chemistry and Laboratory for Surface Studies
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Wilfred T. Tysoe
- Department of Chemistry and Laboratory for Surface Studies
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
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38
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Zhang F, Xu Z, Dong S, Feng L, Song A, Tung CH, Hao J. Hydrogels formed by enantioselective self-assembly of histidine-derived amphiphiles with tartaric acid. SOFT MATTER 2014; 10:4855-62. [PMID: 24865976 DOI: 10.1039/c4sm00479e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Two chiral enantiomers of histidine-derived amphiphilic gelators, (4R,6S)-UIPCA and (4S,6R)-UIPCA, were synthesized through Pictet-Spengler reaction and their gelation behaviors with different organic acids were investigated. Interestingly, the chiral enantiomers of UIPCA showed smart enantioselectivity for gelating tartaric acid enantiomers to form hydrogels with excellent mechanical strength. The TEM and SEM images demonstrated that the hydrogels were composed of networks by physical entanglement of nanofibers with high aspect ratios. The formation of nanofibers was considered to be driven by the interplay of hydrogen bonding, electrostatic attraction, and hydrophobic interaction, which was supported by XRD and FT-IR spectra. The hydrogels exhibited sensitive response to a series of external stimuli, such as temperature, metal ions, and host-guest interactions, to realize the reversible gel-sol transition. The property of the gelation was elaborated and the gelators were expected to find their applications in chiral discrimination.
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Affiliation(s)
- Fanjun Zhang
- Key Laboratory for Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, China.
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39
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Abstract
Prochiral molecules locally induce a chiral restructuring of the Cu(110) surface that persists after removal of the molecules.
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Affiliation(s)
- Chrysanthi Karageorgaki
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- CH-8600 Dübendorf, Switzerland
| | - Karl-Heinz Ernst
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- CH-8600 Dübendorf, Switzerland
- Department of Chemistry
- University of Zurich
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40
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de Bruin AG, Barbour ME, Briscoe WH. Macromolecular and supramolecular chirality: a twist in the polymer tales. POLYM INT 2013. [DOI: 10.1002/pi.4639] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alexander G de Bruin
- Bristol Centre for Functional Nanomaterials; University of Bristol, Tyndall Avenue; Bristol BS8 1FD UK
- School of Chemistry; University of Bristol, Cantock's Close; Bristol BS8 1TS UK
| | - Michele E Barbour
- School of Oral and Dental Sciences; University of Bristol; Lower Maudlin Street Bristol BS1 2LY UK
| | - Wuge H Briscoe
- School of Chemistry; University of Bristol, Cantock's Close; Bristol BS8 1TS UK
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41
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González-Campo A, Amabilino DB. Biomolecules at interfaces: chiral, naturally. Top Curr Chem (Cham) 2013; 333:109-56. [PMID: 23460199 DOI: 10.1007/128_2012_405] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Interfaces are a most important environment in natural and synthetic chemistries for a wide variety of processes, such as catalysis, recognition, separation, and so on. Naturally occurring systems have evolved to one handedness and the study of interfaces where biomolecules are located is a potentially revealing pursuit with regard to understanding the reasons and importance of stereochemistry in these environments. Equally, the spontaneous resolution of achiral and chiral compounds at interfaces could lead to explanations regarding the emergence of single handedness in proteins and sugars. Also, the attachment of biomolecules to surfaces leads to systems capable of stereoselective processes which may be useful for the applications mentioned above. The review covers systems ranging from small biomolecules studied under ultrapure conditions in vacuum to protein adsorption to surfaces in solution, and the techniques that can be used to study them.
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Affiliation(s)
- Arántzazu González-Campo
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus Universitari de Bellaterra, 08193, Cerdanyola del Vallès, Catalonia, Spain
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42
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Chen T, Yang WH, Wang D, Wan LJ. Globally homochiral assembly of two-dimensional molecular networks triggered by co-absorbers. Nat Commun 2013; 4:1389. [PMID: 23340429 PMCID: PMC3562460 DOI: 10.1038/ncomms2403] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 12/19/2012] [Indexed: 11/09/2022] Open
Abstract
Understanding the chirality induction and amplification processes, and the construction of globally homochiral surfaces, represent essential challenges in surface chirality studies. Here we report the induction of global homochirality in two-dimensional enantiomorphous networks of achiral molecules via co-assembly with chiral co-absorbers. The scanning tunnelling microscopy investigations and molecular mechanics simulations demonstrate that the point chirality of the co-absorbers transfers to organizational chirality of the assembly units via enantioselective supramolecular interactions, and is then hierarchically amplified to the global homochirality of two-dimensional networks. The global homochirality of the network assembly shows nonlinear dependence on the enantiomeric excess of chiral co-absorber in the solution phase, demonstrating, for the first time, the validation of the 'majority rules' for the homochirality control of achiral molecules at the liquid/solid interface. Such an induction and nonlinear chirality amplification effect promises a new approach towards two-dimensional homochirality control and may reveal important insights into asymmetric heterogeneous catalysis, chiral separation and chiral crystallization.
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Affiliation(s)
- Ting Chen
- CAS Key Laboratory of Molecular Nanostructures and Nanotechnology, Beijing 100190, China
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43
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Zhang T, King DA, Driver SM. Structural phases formed by NO2/CO co-adsorption on Au{111} surfaces. J Chem Phys 2012; 137:074703. [DOI: 10.1063/1.4743901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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44
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Sumner C, Burchett W. Developments in the Pd Catalyzed Hydrogenation of Oxygenated Organic Compounds. Top Catal 2012. [DOI: 10.1007/s11244-012-9820-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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45
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46
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47
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Baddeley CJ, Jones TE, Trant AG, Wilson KE. Fundamental Investigations of Enantioselective Heterogeneous Catalysis. Top Catal 2011. [DOI: 10.1007/s11244-011-9761-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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48
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Szabelski P, Guz A. Selective Adsorption Properties of a Model Nano-Patterned Surface. ADSORPT SCI TECHNOL 2011. [DOI: 10.1260/0263-6174.29.6.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Paweł Szabelski
- Department of Theoretical Chemistry, Maria-Curie Sklodowska University, Pl. M.C. Sklodowskiej 3, 20-031 Lublin, Poland
| | - Agnieszka Guz
- Department of Theoretical Chemistry, Maria-Curie Sklodowska University, Pl. M.C. Sklodowskiej 3, 20-031 Lublin, Poland
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49
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Iski EV, Tierney HL, Jewell AD, Sykes ECH. Spontaneous Transmission of Chirality through Multiple Length Scales. Chemistry 2011; 17:7205-12. [DOI: 10.1002/chem.201100268] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Erin V. Iski
- Department of Chemistry, Tufts University, 62 Talbot Ave., Medford, MA 02155 (USA), Fax: (+1) 617‐627‐3773
| | - Heather L. Tierney
- Department of Chemistry, Tufts University, 62 Talbot Ave., Medford, MA 02155 (USA), Fax: (+1) 617‐627‐3773
| | - April D. Jewell
- Department of Chemistry, Tufts University, 62 Talbot Ave., Medford, MA 02155 (USA), Fax: (+1) 617‐627‐3773
| | - E. Charles H. Sykes
- Department of Chemistry, Tufts University, 62 Talbot Ave., Medford, MA 02155 (USA), Fax: (+1) 617‐627‐3773
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50
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Mark AG, Forster M, Raval R. Recognition and Ordering at Surfaces: The Importance of Handedness and Footedness. Chemphyschem 2011; 12:1474-80. [DOI: 10.1002/cphc.201001034] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Indexed: 11/12/2022]
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