1
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Meng Y, Zhou Y, Wang X, Wei W, Hu Y, Chen B, Zhong D. Direct Nanosecond Multiframe Imaging of Irreversible Dynamics in 4D Electron Microscopy. NANO LETTERS 2024. [PMID: 38856109 DOI: 10.1021/acs.nanolett.4c01025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Irreversible ultrafast events are prevalent in nature, yet their capture in real time poses significant challenges. Traditional single-shot imaging technologies, which utilize a single optical pump and single delayed electron probe, offer high spatiotemporal resolution but fail to capture the entire dynamic evolutions. Here, we introduce a novel imaging method employing a single optical pump and delayed multiple electron probes. This approach, facilitated by an innovative deflector in ultrafast electron microscopy, enables the acquisition of nine frames per exposure, paving the way for statistical and quantitative analyses. We have developed an algorithm that corrects frame-by-frame distortions, realizing a cross-correlation enhancement of ∼26%. Achieving ∼12 nm and 20 ns resolution, our method allows for the comprehensive visualization of laser-induced behaviors in Au nanoparticles, including merging, jumping, and collision processes. Our results demonstrate the capability of this multiframe imaging technique to document irreversible processes across materials science and biology with unprecedented nanometer-nanosecond precision.
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Affiliation(s)
- Yenan Meng
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yu Zhou
- State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoxiang Wang
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Weiyu Wei
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yongxiang Hu
- State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bin Chen
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dongping Zhong
- Center for Ultrafast Science and Technology, School of Physics and Astronomy, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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2
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Li J, Liang J, Lan MH, Xia XH. Atomic Force Microscopy-Based Nanoscale Infrared Techniques for Catalysis. J Phys Chem Lett 2023; 14:11318-11323. [PMID: 38064367 DOI: 10.1021/acs.jpclett.3c02937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Atomic force microscopy (AFM)-based nanoscale infrared (nano-IR) techniques have found extensive application in the fields of chemistry, physics, and materials science, enabling the visualization of nanoscale features that surpass the optical diffraction limit. More recently, tentative investigations have been conducted into the use of these techniques in the field of catalysis, particularly in studying interfacial processes involving molecular monolayer samples. IR nanoimaging and nanospectroscopy offer unique perspectives on catalytic processes. Considering the specific characteristics of catalytic processes, this Perspective highlights the need for and reviews the current status of AFM-based nano-IR techniques for catalysis investigations, which aims to contribute to a deeper understanding of the nanoscale mechanisms underlying the catalytic processes.
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Affiliation(s)
- Jian Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jing Liang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Mu-Hao Lan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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3
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Corcho-Valdes AL, Ponce de Leon-Cabrera J, Padron-Ramirez I, Chao-Mujica FJ, Lebed E, Gutierrez-Quintanilla A, Desdin-Garcia LF, Voloshin Y, Antuch M. Precise Fingerprint Determination of Vibrational Infrared Spectra in a Series of Co(II) Clathrochelates through Experimental and Theoretical Analyses. J Phys Chem A 2023; 127:9419-9429. [PMID: 37935045 DOI: 10.1021/acs.jpca.3c04161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
The energetic demands of modern society for clean energy vectors, such as H2, have caused a surge in research associated with homogeneous and immobilized electrocatalysts that may replace Pt. In particular, clathrochelates have shown excellent electrocatalytic properties for the hydrogen evolution reaction (HER). However, the actual mechanism for the HER catalyzed by these d-metal complexes remains an open debate, which may be addressed via Operando spectroelectrochemistry. The prediction of electrochemical properties via density functional theory (DFT) needs access to thermodynamic functions, which are only available after Hessian calculations. Unfortunately, there is a notable lack in the current literature regarding the precise evaluation of vibrational spectra of such complexes, given their structural complexity and the associated tangled IR spectra. In this work, we have performed a detailed theoretical and experimental analysis in a family of Co(II) clathrochelates, in order to establish univocally their IR pattern, and also the calculation methodology that is adequate for such predictions. In summary, we have observed the presence of multiple common bands shared by this clathrochelate family, using the B3LYP functional, the LANL2DZ basis, and effective core potentials (ECP) for heavy atoms. The most important issue addressed in this article was therefore related to the detailed assignment of the fingerprint associated with cobalt(II) clathrochelates, which is a challenging endeavor due to the crowded nature of their spectra.
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Affiliation(s)
- Angel Luis Corcho-Valdes
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), No. 502, Calle 30 y 5ta Ave., Miramar, C.P. 11300 La Habana, Cuba
| | - Josue Ponce de Leon-Cabrera
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), No. 502, Calle 30 y 5ta Ave., Miramar, C.P. 11300 La Habana, Cuba
| | - Ivan Padron-Ramirez
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), No. 502, Calle 30 y 5ta Ave., Miramar, C.P. 11300 La Habana, Cuba
| | - Frank Justo Chao-Mujica
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), No. 502, Calle 30 y 5ta Ave., Miramar, C.P. 11300 La Habana, Cuba
| | - Ekaterina Lebed
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
| | | | - Luis Felipe Desdin-Garcia
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), No. 502, Calle 30 y 5ta Ave., Miramar, C.P. 11300 La Habana, Cuba
| | - Yan Voloshin
- Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28-1 Vavilova st., 119334 Moscow, Russia
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky pr., 119991 Moscow, Russia
| | - Manuel Antuch
- Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear (CEADEN), No. 502, Calle 30 y 5ta Ave., Miramar, C.P. 11300 La Habana, Cuba
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4
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Ren Y, Wang J, Zhang M, Wang Y, Cao Y, Kim DH, Lin Z. Locally Ordered Single-Atom Catalysts for Electrocatalysis. Angew Chem Int Ed Engl 2023:e202315003. [PMID: 37932862 DOI: 10.1002/anie.202315003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 11/08/2023]
Abstract
Single-atom catalysts manifest nearly 100 % atom utilization efficiency, well-defined active sites, and high selectivity. However, their practical applications are hindered by a low atom loading density, uncontrollable location, and ambiguous interaction with the support, thereby posing challenges to maximizing their electrocatalytic performance. To address these limitations, the ability to arrange randomly dispersed single atoms into locally ordered single-atom catalysts (LO-SACs) substantially influences the electronic effect between reactive sites and the support, the synergistic interaction among neighboring single atoms, the bonding energy of intermediates with reactive sites and the complexity of the mechanism. As such, it dramatically promotes reaction kinetics, reduces the energy barrier of the reaction, improves the performance of the catalyst and simplifies the reaction mechanism. In this review, firstly, we introduce a variety of compelling characteristics of LO-SACs as electrocatalysts. Subsequently, the synthetic strategies, characterization methods and applications of LO-SACs in electrocatalysis are discussed. Finally, the future opportunities and challenges are elaborated to encourage further exploration in this rapidly evolving field.
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Affiliation(s)
- Yujing Ren
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081 (P. R., China
| | - Jinyong Wang
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Mingyue Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Yuqing Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Yuan Cao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
| | - Dong Ha Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760 (Republic of, Korea
| | - Zhiqun Lin
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760 (Republic of, Korea
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5
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Tetsassi Feugmo CG. Accurately predicting molecular spectra with deep learning. NATURE COMPUTATIONAL SCIENCE 2023; 3:918-919. [PMID: 38177595 DOI: 10.1038/s43588-023-00553-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
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6
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Kubis C, König M, Leidecker BN, Selent D, Schröder H, Sawall M, Baumann W, Spannenberg A, Brächer A, Neymeyr K, Franke R, Börner A. Interplay between Catalyst Complexes and Dormant States: In Situ Spectroscopic Investigations on a Catalyst System for Alkene Hydroformylation. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Christoph Kubis
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
| | - Matthias König
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
- Evonik Operations GmbH, Paul-Baumann-Street 1, 45772 Marl, Germany
| | - Benedict N. Leidecker
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
| | - Detlef Selent
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
| | - Henning Schröder
- University of Rostock, Institute of Mathematics, Ulmenstraße 59, 18057 Rostock, Germany
| | - Mathias Sawall
- University of Rostock, Institute of Mathematics, Ulmenstraße 59, 18057 Rostock, Germany
| | - Wolfgang Baumann
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
| | | | - Klaus Neymeyr
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
- University of Rostock, Institute of Mathematics, Ulmenstraße 59, 18057 Rostock, Germany
| | - Robert Franke
- Evonik Operations GmbH, Paul-Baumann-Street 1, 45772 Marl, Germany
- Chair for Theoretical Chemistry, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - Armin Börner
- Leibniz-Institute for Catalysis e.V., Albert-Einstein-Street 29a, 18059 Rostock, Germany
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7
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Koczoń P, Hołaj-Krzak JT, Palani BK, Bolewski T, Dąbrowski J, Bartyzel BJ, Gruczyńska-Sękowska E. The Analytical Possibilities of FT-IR Spectroscopy Powered by Vibrating Molecules. Int J Mol Sci 2023; 24:ijms24021013. [PMID: 36674526 PMCID: PMC9860999 DOI: 10.3390/ijms24021013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/30/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023] Open
Abstract
This paper discusses the state of advancement in the development of spectroscopic methods based on the use of mid (proper) infrared radiation in the context of applications in various fields of science and technology. The authors drew attention to the most important solutions specific to both spectroscopy itself (ATR technique) and chemometric data processing tools (PCA and PLS models). The objective of the current paper is to collect and consistently present information on various aspects of FT-IR spectroscopy, which is not only a well-known and well-established method but is also continuously developing. The innovative aspect of the current review is to show FT-IR's great versatility that allows its applications to solve and explain issues from both the scientific domain (e.g., hydrogen bonds) and practical ones (e.g., technological processes, medicine, environmental protection, and food analysis). Particular attention was paid to the issue of hydrogen bonds as key non-covalent interactions, conditioning the existence of living matter and determining the number of physicochemical properties of various materials. Since the role of FT-IR spectroscopy in the field of hydrogen bond research has great significance, a historical outline of the most important qualitative and quantitative hydrogen bond theories is provided. In addition, research on selected unconventional spectral effects resulting from the substitution of protons with deuterons in hydrogen bridges is presented. The state-of-the-art and originality of the current review are that it presents a combination of uses of FT-IR spectroscopy to explain the way molecules vibrate and the effects of those vibrations on macroscopic properties, hence practical applications of given substances.
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Affiliation(s)
- Piotr Koczoń
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Jakub T. Hołaj-Krzak
- Institute of Technology and Life Sciences—National Research Institute, 3 Hrabska Ave., Falenty, 05-090 Raszyn, Poland
| | - Bharani K. Palani
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Tymoteusz Bolewski
- Institute of Technology and Life Sciences—National Research Institute, 3 Hrabska Ave., Falenty, 05-090 Raszyn, Poland
| | - Jarosław Dąbrowski
- Institute of Technology and Life Sciences—National Research Institute, 3 Hrabska Ave., Falenty, 05-090 Raszyn, Poland
| | - Bartłomiej J. Bartyzel
- Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Eliza Gruczyńska-Sękowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
- Correspondence:
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8
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Wang G, Ke X, Sui M. Advanced TEM Characterization for Single-atom Catalysts: from Ex-situ Towards In-situ. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2245-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Sharafeldin M, Davis JJ. Characterising the biosensing interface. Anal Chim Acta 2022; 1216:339759. [DOI: 10.1016/j.aca.2022.339759] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/08/2022] [Accepted: 03/22/2022] [Indexed: 12/19/2022]
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10
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Wang M, Feng Z. Interfacial processes in electrochemical energy systems. Chem Commun (Camb) 2021; 57:10453-10468. [PMID: 34494049 DOI: 10.1039/d1cc01703a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Electrochemical energy systems such as batteries, water electrolyzers, and fuel cells are considered as promising and sustainable energy storage and conversion devices due to their high energy densities and zero or negative carbon dioxide emission. However, their widespread applications are hindered by many technical challenges, such as the low efficiency and poor long-term cyclability, which are mostly affected by the changes at the reactant/electrode/electrolyte interfaces. These interfacial processes involve ion/electron transfer, molecular/ion adsorption/desorption, and complex interface restructuring, which lead to irreversible modifications to the electrodes and the electrolyte. The understanding of these interfacial processes is thus crucial to provide strategies for solving those problems. In this review, we will discuss different interfacial processes at three representative interfaces, namely, solid-gas, solid-liquid, and solid-solid, in various electrochemical energy systems, and how they could influence the performance of electrochemical systems.
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Affiliation(s)
- Maoyu Wang
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA.
| | - Zhenxing Feng
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA.
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11
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Bara-Estaún A, Lyall CL, Lowe JP, Pringle PG, Kamer PCJ, Franke R, Hintermair U. Multi-nuclear, high-pressure, operando FlowNMR spectroscopic study of Rh/PPh 3 - catalysed hydroformylation of 1-hexene. Faraday Discuss 2021; 229:422-442. [PMID: 34075917 DOI: 10.1039/c9fd00145j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The hydroformylation of 1-hexene with 12 bar of 1 : 1 H2/CO in the presence of the catalytic system [Rh(acac)(CO)2]/PPh3 was successfully studied by real-time multinuclear high-resolution FlowNMR spectroscopy at 50 °C. Quantitative reaction progress curves that yield rates as well as chemo- and regioselectivities have been obtained with varying P/Rh loadings. Dissolved H2 can be monitored in solution to ensure true operando conditions without gas limitation. 31P{1H} and selective excitation 1H pulse sequences have been periodically interleaved with 1H FlowNMR measurements to detect Rh-phosphine intermediates during the catalysis. Stopped-flow experiments in combination with diffusion measurements and 2D heteronuclear correlation experiments showed the known tris-phosphine complex [RhH(CO)(PPh3)3] to generate rapidly exchanging isomers of the bis-phosphine complex [Rh(CO)2(PPh3)2] under CO pressure that directly enter the catalytic cycle. A new mono-phosphine acyl complex has been identified as an in-cycle reaction intermediate.
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Affiliation(s)
- Alejandro Bara-Estaún
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY Bath, UK. and Dynamic Reaction Monitoring Facility, University of Bath, Claverton Down, BA2 7AY Bath, UK
| | - Catherine L Lyall
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY Bath, UK. and Dynamic Reaction Monitoring Facility, University of Bath, Claverton Down, BA2 7AY Bath, UK
| | - John P Lowe
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY Bath, UK. and Dynamic Reaction Monitoring Facility, University of Bath, Claverton Down, BA2 7AY Bath, UK
| | - Paul G Pringle
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK
| | - Paul C J Kamer
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29A, 18059 Rostock, Germany
| | - Robert Franke
- Evonik Performance Materials GmbH, Paul-Baumann-Straße 1, 45772 Marl, Germany
| | - Ulrich Hintermair
- Department of Chemistry, University of Bath, Claverton Down, BA2 7AY Bath, UK. and Dynamic Reaction Monitoring Facility, University of Bath, Claverton Down, BA2 7AY Bath, UK and Centre for Sustainable & Circular Technologies, University of Bath, Bath BA2 7AY, UK
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12
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Jameel F, Stein M. Solvent effects in hydroformylation of long-chain olefins. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Zhou Y, Wu C, Ma H, Chen J, Sun T. Precise Preparation of a High-Purity Key Intermediate of Tazobactam. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanan Zhou
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang 110016, P. R. China
| | - Chengjun Wu
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang 110016, P. R. China
| | - Hongzhi Ma
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang 110016, P. R. China
| | - Jianchao Chen
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang 110016, P. R. China
| | - Tiemin Sun
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang 110016, P. R. China
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14
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Wang K, Wang X, Liang X. Synthesis of High Metal Loading Single Atom Catalysts and Exploration of the Active Center Structure. ChemCatChem 2020. [DOI: 10.1002/cctc.202001255] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Kaiying Wang
- Department of Chemical and Biochemical Engineering Missouri University of Science and Technology Rolla MO 65409 USA
| | - Xiaofeng Wang
- College of Environmental Science and Engineering Dalian Maritime University Dalian 116026 P.R. China
| | - Xinhua Liang
- Department of Chemical and Biochemical Engineering Missouri University of Science and Technology Rolla MO 65409 USA
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15
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Dangat Y, Popli S, Sunoj RB. Unraveling the Importance of Noncovalent Interactions in Asymmetric Hydroformylation Reactions. J Am Chem Soc 2020; 142:17079-17092. [DOI: 10.1021/jacs.0c06942] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yuvraj Dangat
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sahil Popli
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Raghavan B. Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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16
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Kratz C, Furchner A, Sun G, Rappich J, Hinrichs K. Sensing and structure analysis by in situIR spectroscopy: from mL flow cells to microfluidic applications. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:393002. [PMID: 32235045 DOI: 10.1088/1361-648x/ab8523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
In situmid-infrared (MIR) spectroscopy in liquids is an emerging field for the analysis of functional surfaces and chemical reactions. Different basic geometries exist forin situMIR spectroscopy in milliliter (mL) and microfluidic flow cells, such as attenuated total reflection (ATR), simple reflection, transmission and fiber waveguides. After a general introduction of linear opticalin situMIR techniques, the methodology of ATR, ellipsometric and microfluidic applications in single-reflection geometries is presented. Selected examples focusing on thin layers relevant to optical, electronical, polymer, biomedical, sensing and silicon technology are discussed. The development of an optofluidic platform translates IR spectroscopy to the world of micro- and nanofluidics. With the implementation of SEIRA (surface enhanced infrared absorption) interfaces, the sensitivity of optofluidic analyses of biomolecules can be improved significantly. A large variety of enhancement surfaces ranging from tailored nanostructures to metal-island film substrates are promising for this purpose. Meanwhile, time-resolved studies, such as sub-monolayer formation of organic molecules in nL volumes, become available in microscopic or laser-based set-ups. With the adaption of modern brilliant IR sources, such as tunable and broadband IR lasers as well as frequency comb sources, possible applications of far-field IR spectroscopy inin situsensing with high lateral (sub-mm) and time (sub-s) resolution are considerably extended.
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Affiliation(s)
| | | | - Guoguang Sun
- ISAS-e.V., Schwarzschildstr. 8, 12489 Berlin, Germany
| | - Jörg Rappich
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Kekuléstr. 5, 12489 Berlin, Germany
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17
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Künnemann KU, Gumbiowski N, Müller P, Jirmann Y, Dreimann JM, Vogt D. Chemometrics in the Homogeneously Catalyzed Reductive Amination: Combining In Situ Fourier-Transform Infrared Spectroscopy and Band-Target Entropy Minimization. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kai U. Künnemann
- Laboratory of Industrial Chemistry, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Nina Gumbiowski
- Laboratory of Industrial Chemistry, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Pascal Müller
- Laboratory of Industrial Chemistry, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Yannick Jirmann
- Laboratory of Industrial Chemistry, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Jens M. Dreimann
- Laboratory of Industrial Chemistry, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
| | - Dieter Vogt
- Laboratory of Industrial Chemistry, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Straße 66, 44227 Dortmund, Germany
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Li P, Shen C, Min J, Mei JY, Zheng H, He L, Tian X. Computational investigation of the ligand effect on the chemo/regioselectivity and reactivity of cobalt-catalysed hydroformylation. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02562f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand effect on the chemo/regioselectivity and reactivity of cobalt-catalysed hydroformylation has been discussed.
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Affiliation(s)
- Pan Li
- Institute of Molecular Science
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Chaoren Shen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Jie Min
- Institute of Molecular Science
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Jing-Yuan Mei
- Institute of Molecular Science
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Huan Zheng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Lin He
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Suzhou Research Institute of LICP
- Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Xinxin Tian
- Institute of Molecular Science
- Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province
- Shanxi University
- Taiyuan 030006
- P. R. China
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