1
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González RM, Maris JJE, Wagner M, Ganjkhanlou Y, Bomer JG, Werny MJ, Rabouw FT, Weckhuysen BM, Odijk M, Meirer F. Fluorescent-Probe Characterization for Pore-Space Mapping with Single-Particle Tracking. Angew Chem Int Ed Engl 2024; 63:e202314528. [PMID: 38037863 DOI: 10.1002/anie.202314528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/28/2023] [Accepted: 11/29/2023] [Indexed: 12/02/2023]
Abstract
Porous solids often contain complex pore networks with pores of various sizes. Tracking individual fluorescent probes as they diffuse through porous materials can be used to characterize pore networks at tens of nanometers resolution. However, understanding the motion behavior of fluorescent probes in confinement is crucial to reliably derive pore network properties. Here, we introduce well-defined lithography-made model pores developed to study probe behavior in confinement. We investigated the influence of probe-host interactions on diffusion and trapping of confined single-emitter quantum-dot probes. Using the pH-responsiveness of the probes, we were able to largely suppress trapping at the pore walls. This enabled us to define experimental conditions for mapping of the accessible pore space of a one-dimensional pore array as well as a real-life polymerization-catalyst-support particle.
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Affiliation(s)
- Rafael Mayorga González
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - J J Erik Maris
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - Marita Wagner
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - Yadolah Ganjkhanlou
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - Johan G Bomer
- BIOS Lab on a Chip Group, MESA+ Institute for Nanotechnology, University of Twente, 7522, ME Enschede, The Netherlands
| | - Maximilian J Werny
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - Freddy T Rabouw
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - Bert M Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
| | - Mathieu Odijk
- BIOS Lab on a Chip Group, MESA+ Institute for Nanotechnology, University of Twente, 7522, ME Enschede, The Netherlands
| | - Florian Meirer
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science and Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584, CG Utrecht, The Netherlands
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2
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Shen M, Rackers WH, Sadtler B. Getting the Most Out of Fluorogenic Probes: Challenges and Opportunities in Using Single-Molecule Fluorescence to Image Electro- and Photocatalysis. CHEMICAL & BIOMEDICAL IMAGING 2023; 1:692-715. [PMID: 38037609 PMCID: PMC10685636 DOI: 10.1021/cbmi.3c00075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/04/2023] [Accepted: 10/07/2023] [Indexed: 12/02/2023]
Abstract
Single-molecule fluorescence microscopy enables the direct observation of individual reaction events at the surface of a catalyst. It has become a powerful tool to image in real time both intra- and interparticle heterogeneity among different nanoscale catalyst particles. Single-molecule fluorescence microscopy of heterogeneous catalysts relies on the detection of chemically activated fluorogenic probes that are converted from a nonfluorescent state into a highly fluorescent state through a reaction mediated at the catalyst surface. This review article describes challenges and opportunities in using such fluorogenic probes as proxies to develop structure-activity relationships in nanoscale electrocatalysts and photocatalysts. We compare single-molecule fluorescence microscopy to other microscopies for imaging catalysis in situ to highlight the distinct advantages and limitations of this technique. We describe correlative imaging between super-resolution activity maps obtained from multiple fluorogenic probes to understand the chemical origins behind spatial variations in activity that are frequently observed for nanoscale catalysts. Fluorogenic probes, originally developed for biological imaging, are introduced that can detect products such as carbon monoxide, nitrite, and ammonia, which are generated by electro- and photocatalysts for fuel production and environmental remediation. We conclude by describing how single-molecule imaging can provide mechanistic insights for a broader scope of catalytic systems, such as single-atom catalysts.
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Affiliation(s)
- Meikun Shen
- Department
of Chemistry and Biochemistry, University
of Oregon, Eugene, Oregon 97403, United States
| | - William H. Rackers
- Department
of Chemistry, Washington University, St. Louis, Missouri 63130, United States
| | - Bryce Sadtler
- Department
of Chemistry, Washington University, St. Louis, Missouri 63130, United States
- Institute
of Materials Science & Engineering, Washington University, St. Louis, Missouri 63130, United States
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3
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White D, Smith MA, Chanda B, Goldsmith RH. Strategies for Overcoming the Single-Molecule Concentration Barrier. ACS MEASUREMENT SCIENCE AU 2023; 3:239-257. [PMID: 37600457 PMCID: PMC10436376 DOI: 10.1021/acsmeasuresciau.3c00002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 08/22/2023]
Abstract
Fluorescence-based single-molecule approaches have helped revolutionize our understanding of chemical and biological mechanisms. Unfortunately, these methods are only suitable at low concentrations of fluorescent molecules so that single fluorescent species of interest can be successfully resolved beyond background signal. The application of these techniques has therefore been limited to high-affinity interactions despite most biological and chemical processes occurring at much higher reactant concentrations. Fortunately, recent methodological advances have demonstrated that this concentration barrier can indeed be broken, with techniques reaching concentrations as high as 1 mM. The goal of this Review is to discuss the challenges in performing single-molecule fluorescence techniques at high-concentration, offer applications in both biology and chemistry, and highlight the major milestones that shatter the concentration barrier. We also hope to inspire the widespread use of these techniques so we can begin exploring the new physical phenomena lying beyond this barrier.
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Affiliation(s)
- David
S. White
- Department
of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Mackinsey A. Smith
- Department
of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Baron Chanda
- Center
for
Investigation of Membrane Excitability Diseases, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri 63110, United States
| | - Randall H. Goldsmith
- Department
of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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4
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Peacock H, Blum SA. Surfactant Micellar and Vesicle Microenvironments and Structures under Synthetic Organic Conditions. J Am Chem Soc 2023; 145:7648-7658. [PMID: 36951303 PMCID: PMC10079647 DOI: 10.1021/jacs.3c01574] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Fluorescence lifetime imaging microscopy (FLIM) reveals vesicle sizes, structures, microenvironments, reagent partitioning, and system evolution with two chemical reactions for widely used surfactant-water systems under conditions relevant to organic synthesis, including during steps of Negishi cross-coupling reactions. In contrast to previous investigations, the present experiments characterize surfactant systems with representative organohalide substrates at high concentrations (0.5 M) that are reflective of the preparative-scale organic reactions performed and reported in water. In the presence of representative organic substrates, 2-iodoethylbenzene and 2-bromo-6-methoxypyridine, micelles swell into emulsion droplets that are up to 20 μm in diameter, which is 3-4 orders of magnitude larger than previously measured in the absence of an organic substrate (5-200 nm). The partitioning of reagents in these systems is imaged through FLIM─demonstrated here with nonpolar, amphiphilic, organic, basic, and oxidative-addition reactive compounds, a reactive zinc metal powder, and a palladium catalyst. FLIM characterizes the chemical species and/or provides microenvironment information inside micelles and vesicles. These data show that surfactants cause surfactant-dictated microenvironments inside smaller micelles (<200 nm) but that addition of a representative organic substrate produces internal microenvironments dictated primarily by the substrate rather than by the surfactant, concurrent with swelling. Addition of a palladium catalyst causes the internal environments to differ between vesicles─information that is not available through nor predicted from prior analytical techniques. Together, these data provide immediately actionable information for revising reaction models of surfactant-water systems that underpin the development of sustainable organic chemistry in water.
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Affiliation(s)
- Hannah Peacock
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Suzanne A. Blum
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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5
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Xiao Y, Xu W. Single-molecule fluorescence imaging for probing nanocatalytic process. Chem 2022. [DOI: 10.1016/j.chempr.2022.09.019] [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]
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6
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Soumoy L, Célis C, Debecker DP, Armandi M, Fiorilli S, Aprile C. Hafnium-doped silica nanotubes for the upgrading of glycerol into solketal: enhanced performances and in-depth structure-activity correlation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.04.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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8
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Muthumanickam S, Thennila M, Yuvaraj P, Lingam KAP, Selvakumar K. An Efficient Synthesis of Heterogeneous and Hard Bound Ti
IV
‐MCM‐41 Catalyzed Mannich Bases and π‐Conjugated Imines. ChemistrySelect 2021. [DOI: 10.1002/slct.202103547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Muthukumar Thennila
- Department of Physics Sethu Institute of Technology Virudhunagar 626115 . Tamilnadu India
| | - Paneerselvam Yuvaraj
- CSIR-North East Institute of Science & Technology Branch Laboratory Lamphelpat Imphal Manipur 795004 India
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9
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Abstract
AbstractNanoporous solids, including microporous, mesoporous and hierarchically structured porous materials, are of scientific and technological interest because of their high surface-to-volume ratio and ability to impose shape- and size-selectivity on molecules diffusing through them. Enormous efforts have been put in the mechanistic understanding of diffusion–reaction relationships of nanoporous solids, with the ultimate goal of developing materials with improved catalytic performance. Single-molecule localization microscopy can be used to explore the pore space via the trajectories of individual molecules. This ensemble-free perspective directly reveals heterogeneities in diffusion and diffusion-related reactivity of individual molecules, which would have been obscured in bulk measurements. In this article, we review developments in the spatial and temporal characterization of nanoporous solids using single-molecule localization microscopy. We illustrate various aspects of this approach, and showcase how it can be used to follow molecular diffusion and reaction behaviors in nanoporous solids.
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10
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Meazza M, Cruz CM, Ortuño AM, Cuerva JM, Crovetto L, Rios R. Studying the reactivity of alkyl substituted BODIPYs: first enantioselective addition of BODIPY to MBH carbonates. Chem Sci 2021; 12:4503-4508. [PMID: 34163715 PMCID: PMC8179495 DOI: 10.1039/d0sc06574a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/03/2021] [Indexed: 12/27/2022] Open
Abstract
The first enantioselective addition of alkyl BODIPYs to Morita-Baylis-Hillman (MBH) carbonates is reported. This is the first reported enantioselective methodology using the methylene position of BODIPYs as a nucleophile. The reaction is efficiently catalyzed by cinchona alkaloids, achieving high enantioselectivities and total diastereoselectivity. The use of cinchona alkaloid pseudo enantiomers (chinine/cinchonine) allows us to obtain both pairs of enantiomers in similar yields and enantioselectivities, a common issue in this type of reaction. The photophysical study of these dyes (absorption and fluorescence) has been performed in order to determine their parameters and explore future possible application in bioimaging. In addition, electronic circular dichroism (ECD) studies supported by time-dependent density functional theory (TD-DFT) calculations were also performed.
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Affiliation(s)
- Marta Meazza
- Faculty of Engineering & Physical Sciences, University of Southampton Highfield Campus Southampton SO17 1BJ UK
| | - Carlos M Cruz
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a la Biomedicina y Medioambiente (UEQ), Universidad de Granada Campus Fuentenueva 18071 Granada Spain
| | - Ana M Ortuño
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a la Biomedicina y Medioambiente (UEQ), Universidad de Granada Campus Fuentenueva 18071 Granada Spain
| | - Juan M Cuerva
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a la Biomedicina y Medioambiente (UEQ), Universidad de Granada Campus Fuentenueva 18071 Granada Spain
| | - Luis Crovetto
- Departamento de Fisicoquímica, Facultad de Farmacia, Unidad de Excelencia de Química Aplicada a la Biomedicina y Medioambiente (UEQ), Universidad de Granada Campus Cartuja 18071 Granada Spain
| | - Ramon Rios
- Faculty of Engineering & Physical Sciences, University of Southampton Highfield Campus Southampton SO17 1BJ UK
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11
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Foret MK, Lincoln R, Do Carmo S, Cuello AC, Cosa G. Connecting the "Dots": From Free Radical Lipid Autoxidation to Cell Pathology and Disease. Chem Rev 2020; 120:12757-12787. [PMID: 33211489 DOI: 10.1021/acs.chemrev.0c00761] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Our understanding of lipid peroxidation in biology and medicine is rapidly evolving, as it is increasingly implicated in various diseases but also recognized as a key part of normal cell function, signaling, and death (ferroptosis). Not surprisingly, the root and consequences of lipid peroxidation have garnered increasing attention from multiple disciplines in recent years. Here we "connect the dots" between the fundamental chemistry underpinning the cascade reactions of lipid peroxidation (enzymatic or free radical), the reactive nature of the products formed (lipid-derived electrophiles), and the biological targets and mechanisms associated with these products that culminate in cellular responses. We additionally bring light to the use of highly sensitive, fluorescence-based methodologies. Stemming from the foundational concepts in chemistry and biology, these methodologies enable visualizing and quantifying each reaction in the cascade in a cellular and ultimately tissue context, toward deciphering the connections between the chemistry and physiology of lipid peroxidation. The review offers a platform in which the chemistry and biomedical research communities can access a comprehensive summary of fundamental concepts regarding lipid peroxidation, experimental tools for the study of such processes, as well as the recent discoveries by leading investigators with an emphasis on significant open questions.
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Affiliation(s)
- Morgan K Foret
- Department of Pharmacology and Therapeutics, McGill University, 3655 Promenade Sir William Osler, Montreal, Quebec, Canada H3G 1Y6
| | - Richard Lincoln
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8
| | - Sonia Do Carmo
- Department of Pharmacology and Therapeutics, McGill University, 3655 Promenade Sir William Osler, Montreal, Quebec, Canada H3G 1Y6
| | - A Claudio Cuello
- Department of Pharmacology and Therapeutics, McGill University, 3655 Promenade Sir William Osler, Montreal, Quebec, Canada H3G 1Y6.,Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada H3A 0C7.,Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada H3A 2B4
| | - Gonzalo Cosa
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B8
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12
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Cavell AC, Krasecki VK, Li G, Sharma A, Sun H, Thompson MP, Forman CJ, Guo SY, Hickman RJ, Parrish KA, Aspuru-Guzik A, Cronin L, Gianneschi NC, Goldsmith RH. Optical monitoring of polymerizations in droplets with high temporal dynamic range. Chem Sci 2020; 11:2647-2656. [PMID: 34084323 PMCID: PMC8157680 DOI: 10.1039/c9sc05559b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/02/2020] [Indexed: 12/23/2022] Open
Abstract
The ability to optically monitor a chemical reaction and generate an in situ readout is an important enabling technology, with applications ranging from the monitoring of reactions in flow, to the critical assessment step for combinatorial screening, to mechanistic studies on single reactant and catalyst molecules. Ideally, such a method would be applicable to many polymers and not require only a specific monomer for readout. It should also be applicable if the reactions are carried out in microdroplet chemical reactors, which offer a route to massive scalability in combinatorial searches. We describe a convenient optical method for monitoring polymerization reactions, fluorescence polarization anisotropy monitoring, and show that it can be applied in a robotically generated microdroplet. Further, we compare our method to an established optical reaction monitoring scheme, the use of Aggregation-Induced Emission (AIE) dyes, and find the two monitoring schemes offer sensitivity to different temporal regimes of the polymerization, meaning that the combination of the two provides an increased temporal dynamic range. Anisotropy is sensitive at early times, suggesting it will be useful for detecting new polymerization "hits" in searches for new reactivity, while the AIE dye responds at longer times, suggesting it will be useful for detecting reactions capable of reaching higher molecular weights.
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Affiliation(s)
- Andrew C Cavell
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Veronica K Krasecki
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Guoping Li
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Abhishek Sharma
- School of Chemistry, University of Glasgow Joseph Black Building, University Avenue Glasgow Scotland G12 8QQ UK
| | - Hao Sun
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Matthew P Thompson
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Christopher J Forman
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Si Yue Guo
- Department of Chemistry, University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Department of Computer Science, University of Toronto 40 St. George Street Toronto Ontario M5S 2E4 Canada
| | - Riley J Hickman
- Department of Chemistry, University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Department of Computer Science, University of Toronto 40 St. George Street Toronto Ontario M5S 2E4 Canada
| | - Katherine A Parrish
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Alán Aspuru-Guzik
- Department of Chemistry, University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Department of Computer Science, University of Toronto 40 St. George Street Toronto Ontario M5S 2E4 Canada
- Canadian Institute for Advanced Research (CIFAR) Senior Fellow Toronto Ontario M5S 1M1 Canada
- CIFAR Artificial Intelligence Chair, Vector Institute Toronto Ontario M5S 1M1 Canada
| | - Leroy Cronin
- School of Chemistry, University of Glasgow Joseph Black Building, University Avenue Glasgow Scotland G12 8QQ UK
| | - Nathan C Gianneschi
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Randall H Goldsmith
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
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13
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Dong B, Pei Y, Mansour N, Lu X, Yang K, Huang W, Fang N. Deciphering nanoconfinement effects on molecular orientation and reaction intermediate by single molecule imaging. Nat Commun 2019; 10:4815. [PMID: 31645571 PMCID: PMC6811571 DOI: 10.1038/s41467-019-12799-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/25/2019] [Indexed: 11/10/2022] Open
Abstract
Nanoconfinement could dramatically change molecular transport and reaction kinetics in heterogeneous catalysis. Here we specifically design a core-shell nanocatalyst with aligned linear nanopores for single-molecule studies of the nanoconfinement effects. The quantitative single-molecule measurements reveal unusual lower adsorption strength and higher catalytic activity on the confined metal reaction centres within the nanoporous structure. More surprisingly, the nanoconfinement effects on enhanced catalytic activity are larger for catalysts with longer and narrower nanopores. Experimental evidences, including molecular orientation, activation energy, and intermediate reactive species, have been gathered to provide a molecular level explanation on how the nanoconfinement effects enhance the catalyst activity, which is essential for the rational design of highly-efficient catalysts.
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Affiliation(s)
- Bin Dong
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Yuchen Pei
- Department of Chemistry, Iowa State University, and Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011, USA
| | - Nourhan Mansour
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Xuemei Lu
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology, Soochow University, 215006, Suzhou, P. R. China
| | - Kai Yang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research & School of Physical Science and Technology, Soochow University, 215006, Suzhou, P. R. China
| | - Wenyu Huang
- Department of Chemistry, Iowa State University, and Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011, USA.
| | - Ning Fang
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA.
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14
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Easter QT, Blum SA. Organic and Organometallic Chemistry at the Single-Molecule, -Particle, and -Molecular-Catalyst-Turnover Level by Fluorescence Microscopy. Acc Chem Res 2019; 52:2244-2255. [PMID: 31310095 DOI: 10.1021/acs.accounts.9b00219] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Mechanistic studies have historically played a key role in the discovery and optimization of reactions in organic and organometallic chemistry. However, even apparently simple organic and organometallic transformations may have surprisingly complicated multistep mechanisms, increasing the difficulty of extracting this mechanistic information. The resulting reaction intermediates often constitute a small fraction of the total reaction mixture, for example, creating a long-term analytical challenge of detection. This challenge is particularly pronounced in cases where the positions of intermediates on the reaction energy surface mean that they do not "build up" to the quantities needed for observation by traditional ensemble analytical tools. Thus, their existence and single-step elementary reactivity cannot be studied directly. New approaches for obtaining this otherwise-missing mechanistic information are therefore needed. Single-turnover, single-molecule, single-particle, and other subensemble fluorescence microscopy techniques are ideally suited for this role because of their sensitivity and spatiotemporal resolution. Inspired by the robust development of single-molecule fluorescence microscopy tools for studying enzyme catalysis, our laboratory has developed analogous fluorescence microscopy techniques to overcome mechanistic challenges in synthetic chemistry, with sensitivity as high as the single-complex, single-turnover, and single-molecule level. These techniques free the experimenter from the previous restriction that intermediates must "build up" to quantities needed for detection by ensemble analytical tools and are suited to systems where synchronization through flash photolysis or stopped flow would be inconvenient or inaccessible. In this process, the techniques transform certain previously "unobservable" intermediates and their elementary single-step reactivities into "observable" ones through sensitive and selective spectral handles. Our program has focused on imaging reactions in small-molecule, organic, and polymer synthetic chemistry with an accent on the reactivity of molecular transition metal complexes and catalysts. Our laboratory initiated studies in this area in 2008 with the imaging of individual palladium complexes that were tagged with spectator fluorophores. To enable imaging, we started with fluorophore selection and development, overcame challenges with imaging in organic solvents, and developed strategies compatible with air-sensitive chemistry and concentrations of reagents generally used in small-molecule synthesis. These studies grew to include characterization of previously unknown organometallic intermediates in the synthesis of organozinc reagents and the direct study of their elementary-step reactivity. The ability to directly observe this behavior generated predictive power for selecting salts that accelerated organozinc reagent formation in synthesis, including salts that had not yet been reported synthetically. In 2017 we also developed the first single-turnover imaging of molecular (chemo)catalysts, which through the technique's spatiotemporal resolution revealed abruptly time-variable polymerization kinetics wherein molecular ruthenium ring-opening metathesis polymerization (ROMP) catalysts changed rates independently from other catalysts less than 1 μm away. Individual catalytic turnovers, each corresponding to one single-chain-elongation reaction arising from insertion of single ROMP or enyne monomers at individual Grubbs II molecular ruthenium catalysts, were spatiotemporally resolved as green flashes in growing polymers. In this Account, we discuss the development of this technique from idea to application, including challenges overcome and strategies created to image synthetic organic and organometallic molecular chemistry at the highest levels of detection sensitivity. We also describe challenges not yet solved and provide an outlook for this growing field at the intersection of microscopy and synthetic/molecular chemistry.
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Affiliation(s)
- Quinn T. Easter
- Department of Chemistry, University of California, Irvine, California 92697−2025, United States
| | - Suzanne A. Blum
- Department of Chemistry, University of California, Irvine, California 92697−2025, United States
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15
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Ye R, Mao X, Sun X, Chen P. Analogy between Enzyme and Nanoparticle Catalysis: A Single-Molecule Perspective. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04926] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Rong Ye
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Xianwen Mao
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Xiangcheng Sun
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Peng Chen
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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16
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Mino L, Signorile M, Crocellà V, Lamberti C. Ti-Based Catalysts and Photocatalysts: Characterization and Modeling. CHEM REC 2018; 19:1319-1336. [PMID: 30570210 DOI: 10.1002/tcr.201800108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 11/14/2018] [Indexed: 11/09/2022]
Abstract
This perspective article aims to underline how cutting-edge synchrotron radiation spectroscopies such as extended X-ray absorption spectroscopy (EXAFS), X-ray absorption near edge structure (XANES), high resolution fluorescence detected (HRFD) XANES, X-ray emission spectroscopy (XES) and resonant inelastic X-ray scattering (RIXS) have played a key role in the structural and electronic characterization of Ti-based catalysts and photocatalysts, representing an important additional value to the outcomes of conventional laboratory spectroscopies (UV-Vis, IR, Raman, EPR, NMR etc.). Selected examples are taken from the authors research activity in the last two decades, covering both band-gap and shape engineered TiO2 materials and microporous titanosilicates (ETS-10, TS-1 and Ti-AlPO-5). The relevance of the state of the art simulation techniques as a support for experiments interpretation is underlined for all the reported examples.
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Affiliation(s)
- Lorenzo Mino
- Department of Chemistry, INSTM Reference Center and NIS Interdepartmental Center, University of Turin, via Giuria 7, I-10135, Turin, Italy
| | - Matteo Signorile
- Department of Chemistry, INSTM Reference Center and NIS Interdepartmental Center, University of Turin, via Giuria 7, I-10135, Turin, Italy
| | - Valentina Crocellà
- Department of Chemistry, INSTM Reference Center and NIS Interdepartmental Center, University of Turin, via Giuria 7, I-10135, Turin, Italy
| | - Carlo Lamberti
- Department of Physics, INSTM Reference Center and CrisDi Interdepartmental Center for crystallography, University of Turin, via Giuria 1, I-10135, Turin, Italy.,The Smart Materials Research Institute, Southern Federal University, Sladkova Street 174/28, 344090, Rostov-on-Don, Russia
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17
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Cao Y, Kang SH. Single-Molecule Nanocatalysis Via the Support Effect of Gold Nanoparticles on Carbon Nanotubes. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yingying Cao
- Department of Chemistry, Graduate School; Kyung Hee University; Yongin 17104 Republic of Korea
| | - Seong Ho Kang
- Department of Chemistry, Graduate School; Kyung Hee University; Yongin 17104 Republic of Korea
- Department of Applied Chemistry and Institute of Natural Sciences; Kyung Hee University; Yongin 17104 Republic of Korea
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18
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Ando T, Bhamidimarri SP, Brending N, Colin-York H, Collinson L, De Jonge N, de Pablo PJ, Debroye E, Eggeling C, Franck C, Fritzsche M, Gerritsen H, Giepmans BNG, Grunewald K, Hofkens J, Hoogenboom JP, Janssen KPF, Kaufman R, Klumpermann J, Kurniawan N, Kusch J, Liv N, Parekh V, Peckys DB, Rehfeldt F, Reutens DC, Roeffaers MBJ, Salditt T, Schaap IAT, Schwarz US, Verkade P, Vogel MW, Wagner R, Winterhalter M, Yuan H, Zifarelli G. The 2018 correlative microscopy techniques roadmap. JOURNAL OF PHYSICS D: APPLIED PHYSICS 2018; 51:443001. [PMID: 30799880 PMCID: PMC6372154 DOI: 10.1088/1361-6463/aad055] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 06/14/2018] [Accepted: 07/01/2018] [Indexed: 05/19/2023]
Abstract
Developments in microscopy have been instrumental to progress in the life sciences, and many new techniques have been introduced and led to new discoveries throughout the last century. A wide and diverse range of methodologies is now available, including electron microscopy, atomic force microscopy, magnetic resonance imaging, small-angle x-ray scattering and multiple super-resolution fluorescence techniques, and each of these methods provides valuable read-outs to meet the demands set by the samples under study. Yet, the investigation of cell development requires a multi-parametric approach to address both the structure and spatio-temporal organization of organelles, and also the transduction of chemical signals and forces involved in cell-cell interactions. Although the microscopy technologies for observing each of these characteristics are well developed, none of them can offer read-out of all characteristics simultaneously, which limits the information content of a measurement. For example, while electron microscopy is able to disclose the structural layout of cells and the macromolecular arrangement of proteins, it cannot directly follow dynamics in living cells. The latter can be achieved with fluorescence microscopy which, however, requires labelling and lacks spatial resolution. A remedy is to combine and correlate different readouts from the same specimen, which opens new avenues to understand structure-function relations in biomedical research. At the same time, such correlative approaches pose new challenges concerning sample preparation, instrument stability, region of interest retrieval, and data analysis. Because the field of correlative microscopy is relatively young, the capabilities of the various approaches have yet to be fully explored, and uncertainties remain when considering the best choice of strategy and workflow for the correlative experiment. With this in mind, the Journal of Physics D: Applied Physics presents a special roadmap on the correlative microscopy techniques, giving a comprehensive overview from various leading scientists in this field, via a collection of multiple short viewpoints.
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Affiliation(s)
- Toshio Ando
- Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
| | | | | | - H Colin-York
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, OX3 9DS Oxford, United Kingdom
| | | | - Niels De Jonge
- INM-Leibniz Institute for New Materials, 66123 Saarbrücken, Germany
- Saarland University, 66123 Saarbrücken, Germany
| | - P J de Pablo
- Dpto. Física de la Materia Condensada Universidad Autónoma de Madrid 28049, Madrid, Spain
- Instituto de Física de la Materia Condensada IFIMAC, Universidad Autónoma de Madrid 28049, Madrid, Spain
| | - Elke Debroye
- KU Leuven, Department of Chemistry, B-3001 Heverlee, Belgium
| | - Christian Eggeling
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, OX3 9DS Oxford, United Kingdom
- Institute of Applied Optics, Friedrich-Schiller University, Jena, Germany
- Leibniz Institute of Photonic Technology (IPHT), Jena, Germany
| | - Christian Franck
- Department of Mechanical Engineering, University of Wisconsin-Madison, 1513 University Ave, Madison, WI 53706, United States of America
| | - Marco Fritzsche
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, OX3 9DS Oxford, United Kingdom
- Kennedy Institute for Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Hans Gerritsen
- Debye Institute, Utrecht University, Utrecht, Netherlands
| | - Ben N G Giepmans
- Department of Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Kay Grunewald
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Centre of Structural Systems Biology Hamburg and University of Hamburg, Hamburg, Germany
- Heinrich-Pette-Institute, Leibniz Institute of Virology, Hamburg, Germany
| | - Johan Hofkens
- KU Leuven, Department of Chemistry, B-3001 Heverlee, Belgium
| | | | | | - Rainer Kaufman
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Centre of Structural Systems Biology Hamburg and University of Hamburg, Hamburg, Germany
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Judith Klumpermann
- Section Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584CX Utrecht, Netherlands
| | - Nyoman Kurniawan
- Centre for Advanced Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | | | - Nalan Liv
- Section Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584CX Utrecht, Netherlands
| | - Viha Parekh
- Centre for Advanced Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Diana B Peckys
- Faculty of Medicine, Saarland University, 66421 Homburg, Germany
| | - Florian Rehfeldt
- University of Göttingen, Third Institute of Physics-Biophysics, 37077 Göttingen, Germany
| | - David C Reutens
- Centre for Advanced Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | | | - Tim Salditt
- University of Göttingen, Institute for X-Ray Physics, 37077 Göttingen, Germany
| | - Iwan A T Schaap
- SmarAct GmbH, Schütte-Lanz-Str. 9, D-26135 Oldenburg, Germany
| | - Ulrich S Schwarz
- Institute for Theoretical Physics and BioQuant, Heidelberg University, Heidelberg, Germany
| | - Paul Verkade
- School of Biochemistry, University of Bristol, Bristol, United Kingdom
| | - Michael W Vogel
- Centre for Advanced Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Richard Wagner
- Department of Life Sciences & Chemistry, Jacobs University, Bremen, Germany
| | | | - Haifeng Yuan
- KU Leuven, Department of Chemistry, B-3001 Heverlee, Belgium
| | - Giovanni Zifarelli
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
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19
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Ristanović Z, Chowdhury AD, Brogaard RY, Houben K, Baldus M, Hofkens J, Roeffaers MBJ, Weckhuysen BM. Reversible and Site-Dependent Proton-Transfer in Zeolites Uncovered at the Single-Molecule Level. J Am Chem Soc 2018; 140:14195-14205. [PMID: 30280894 PMCID: PMC6213027 DOI: 10.1021/jacs.8b08041] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
![]()
Zeolite
activity and selectivity is often determined by the underlying
proton and hydrogen-transfer reaction pathways. For the first time,
we use single-molecule fluorescence microscopy to directly follow
the real-time behavior of individual styrene-derived carbocationic
species formed within zeolite ZSM-5. We find that intermittent fluorescence
and remarkable photostability of carbocationic intermediates strongly
depend on the local chemical environment imposed by zeolite framework
and guest solvent molecules. The carbocationic stability can be additionally
altered by changing para-substituent on the styrene
moiety, as suggested by DFT calculations. Thermodynamically unstable
carbocations are more likely to switch between fluorescent (carbocationic)
and dark (neutral) states. However, the rate constants of this reversible
change can significantly differ among individual carbocations, depending
on their exact location in the zeolite framework. The lifetimes of
fluorescent states and reversibility of the process can be additionally
altered by changing the interaction between dimeric carbocations and
solvated Brønsted acid sites in the MFI framework. Advanced multidimensional
magic angle spinning solid-state NMR spectroscopy has been employed
for the accurate structural elucidation of the reaction products during
the zeolite-catalyzed dimerization of styrene in order to corroborate
the single-molecule fluorescence microscopy data. This complementary
approach of single-molecule fluorescence microscopy, NMR, and DFT
collectively indicates that the relative stability of the carbocationic
and the neutral states largely depends on the substituent and the
local position of the Brønsted acid site within the zeolite framework.
As a consequence, new insights into the host–guest chemistry
between the zeolite and aromatics, in terms of their surface mobility
and reactivity, have been obtained.
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Affiliation(s)
- Zoran Ristanović
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science , Utrecht University , Universiteitsweg 99 , 3584 CG Utrecht , The Netherlands
| | - Abhishek Dutta Chowdhury
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science , Utrecht University , Universiteitsweg 99 , 3584 CG Utrecht , The Netherlands
| | - Rasmus Y Brogaard
- Department of Chemistry , University of Oslo , Postboks 1126 Blindern, 0318 Oslo , Norway
| | - Klaartje Houben
- NMR Research Group, Bijvoet Centre for Biomolecular Research , Utrecht University , Universiteitsweg 99 , 3584 CG Utrecht , The Netherlands
| | - Marc Baldus
- NMR Research Group, Bijvoet Centre for Biomolecular Research , Utrecht University , Universiteitsweg 99 , 3584 CG Utrecht , The Netherlands
| | - Johan Hofkens
- Department of Chemistry , KU Leuven , Celestijnenlaan 200 F , B-3001 Leuven , Belgium
| | - Maarten B J Roeffaers
- Centre for Surface Chemistry and Catalysis , KU Leuven , Kasteelpark Arenberg 23 , 3001 Heverlee , Belgium
| | - Bert M Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science , Utrecht University , Universiteitsweg 99 , 3584 CG Utrecht , The Netherlands
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20
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Zhu D, Ye J, Hu Y, Wen HM, Kang A, Tang YP, Chen J, Shan CX, Cui XB. Specific enrichment combined with highly efficient solid-phase tagging for the sensitive detection of heparin based on boronic acid-functionalized mesoporous silica nanospheres. Chem Commun (Camb) 2018; 52:11779-11782. [PMID: 27722615 DOI: 10.1039/c6cc06128a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A combined specific enrichment and highly efficient solid-phase tagging approach is presented for heparin detection using boronic acid-functionalized mesoporous silica nanospheres as extraction sorbents and nanoscale reactors. It exhibits a faster reaction time (only 6 min), higher tagging-product purity and lower applicable sample concentration compared with liquid-phase tagging.
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Affiliation(s)
- Dong Zhu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Jing Ye
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Yue Hu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Hong Mei Wen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - An Kang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Yu-Ping Tang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Jun Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Chen Xiao Shan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
| | - Xiao Bing Cui
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China.
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21
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Du Y, He X, Zhan Y, Li S, Shen Y, Ning F, Yan L, Zhou X. Imaging the Site-Specific Activity and Kinetics on a Single Nanomaterial by Microchamber Array. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03518] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ying Du
- Department
of Chemistry, College of Sciences, Shanghai University, 99 Shangda
Road, Shanghai 200444, People’s Republic of China
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
| | - Xudong He
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
- Wuhan University, Wuhan 430071, People’s Republic of China
| | - Yulu Zhan
- Department
of Chemistry, College of Sciences, Shanghai University, 99 Shangda
Road, Shanghai 200444, People’s Republic of China
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
| | - Shuping Li
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Yangbin Shen
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Fandi Ning
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Liuming Yan
- Department
of Chemistry, College of Sciences, Shanghai University, 99 Shangda
Road, Shanghai 200444, People’s Republic of China
| | - Xiaochun Zhou
- Division
of Advanced Nanomaterials, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
- Key Laboratory
of Nanodevices and Applications, Suzhou Institute of Nano-tech and
Nano-bionics, Chinese Academy of Sciences, Suzhou 215125, People’s Republic of China
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22
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Scaiano JC, Lanterna AE. Is Single-Molecule Fluorescence Spectroscopy Ready To Join the Organic Chemistry Toolkit? A Test Case Involving Click Chemistry. J Org Chem 2017; 82:5011-5019. [DOI: 10.1021/acs.joc.6b03010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan C. Scaiano
- Department of Chemistry and
Biomolecular Sciences and Centre for Catalysis Research and Innovation
(CCRI), University of Ottawa. 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
| | - Anabel E. Lanterna
- Department of Chemistry and
Biomolecular Sciences and Centre for Catalysis Research and Innovation
(CCRI), University of Ottawa. 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
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23
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Zhang Y, Chen T, Song P, Xu W. Recent progress on single-molecule nanocatalysis based on single-molecule fluorescence microscopy. Sci Bull (Beijing) 2017; 62:290-301. [PMID: 36659357 DOI: 10.1016/j.scib.2017.01.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 01/21/2023]
Abstract
Understanding the heterogeneous catalytic properties of nanoparticles is of great significance for the development of high efficient nanocatalysts, but the intrinsic heterogeneities of nanocatalysts were always covered in traditional ensemble studies. This issue can be overcome if one can follow the catalysis of individual nanoparticles in real time. This paper mainly summarizes recent developments in single-molecule nanocatalysis at single particle level in Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. These developments include the revealing of catalytic kinetics of different types (plane & edge) of surface atoms on individual Pd nanocubes, the observing of in situ deactivation of individual carbon-supported Pt nanoparticles during the electrocatalytic hydrogen-oxidation reaction, and the measurement of catalytic activation energies on single nanocatalysts for both product formation process and dissociation process, etc. These studies further indicate the advantages or unique abilities of single-molecule methods in the studies of nanocatalysis or even chemical reactions.
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Affiliation(s)
- Yuwei Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Tao Chen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Song
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Jilin Provincial Key Laboratory of Low Carbon Chemical Power, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
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24
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Wang B, Durantini J, Decan MR, Nie J, Lanterna AE, Scaiano JC. From the molecule to the mole: improving heterogeneous copper catalyzed click chemistry using single molecule spectroscopy. Chem Commun (Camb) 2017; 53:328-331. [DOI: 10.1039/c6cc08905d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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25
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Ristanović Z, Kubarev AV, Hofkens J, Roeffaers MBJ, Weckhuysen BM. Single Molecule Nanospectroscopy Visualizes Proton-Transfer Processes within a Zeolite Crystal. J Am Chem Soc 2016; 138:13586-13596. [PMID: 27709925 PMCID: PMC5089756 DOI: 10.1021/jacs.6b06083] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Indexed: 12/27/2022]
Abstract
Visualizing proton-transfer processes at the nanoscale is essential for understanding the reactivity of zeolite-based catalyst materials. In this work, the Brønsted-acid-catalyzed oligomerization of styrene derivatives was used for the first time as a single molecule probe reaction to study the reactivity of individual zeolite H-ZSM-5 crystals in different zeolite framework, reactant and solvent environments. This was accomplished via the formation of distinct dimeric and trimeric fluorescent carbocations, characterized by their different photostability, as detected by single molecule fluorescence microscopy. The oligomerization kinetics turned out to be very sensitive to the reaction conditions and the presence of the local structural defects in zeolite H-ZSM-5 crystals. The remarkably photostable trimeric carbocations were found to be formed predominantly near defect-rich crystalline regions. This spectroscopic marker offers clear prospects for nanoscale quality control of zeolite-based materials. Interestingly, replacing n-heptane with 1-butanol as a solvent led to a reactivity decrease of several orders and shorter survival times of fluorescent products due to the strong chemisorption of 1-butanol onto the Brønsted acid sites. A similar effect was achieved by changing the electrophilic character of the para-substituent of the styrene moiety. Based on the measured turnover rates we have established a quantitative, single turnover approach to evaluate substituent and solvent effects on the reactivity of individual zeolite H-ZSM-5 crystals.
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Affiliation(s)
- Zoran Ristanović
- Inorganic
Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Alexey V. Kubarev
- Centre for Surface Chemistry and
Catalysis and Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, 3001 Heverlee, Belgium
| | - Johan Hofkens
- Centre for Surface Chemistry and
Catalysis and Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, 3001 Heverlee, Belgium
| | - Maarten B. J. Roeffaers
- Centre for Surface Chemistry and
Catalysis and Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, 3001 Heverlee, Belgium
| | - Bert M. Weckhuysen
- Inorganic
Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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26
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Jiang Y, Zhao Y, Xu X, Lin K, Wang D. Mesoporous titanosilicate nanoparticles: facile preparation and application in heterogeneous epoxidation of cyclohexene. RSC Adv 2016. [DOI: 10.1039/c6ra10145c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mesoporous titanosilicate nanoparticles were hydrothermally synthesized from a titanosilicate solution with cetyltrimethylammonium bromide as the template and with a cationic polymer as the size-controlling agent.
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Affiliation(s)
- Yanqiu Jiang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- 150080 Harbin
- China
| | - Yong Zhao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- 150080 Harbin
- China
| | - Xianzhu Xu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- 150080 Harbin
- China
| | - Kaifeng Lin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- 150080 Harbin
- China
| | - Dan Wang
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
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27
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Hodgson GK, Impellizzeri S, Scaiano JC. Single molecule study of samarium oxide nanoparticles as a purely heterogeneous catalyst for one-pot aldehyde chemistry. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00894a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterogeneous catalysis holds distinct advantages over homogeneous catalysis; however, it is only truly advantageous if unaffected by metal ion leaching or in situ formation of a soluble catalytically active species.
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Affiliation(s)
- Gregory K. Hodgson
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- K1N 6N5 Canada
| | - Stefania Impellizzeri
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- K1N 6N5 Canada
| | - Juan C. Scaiano
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation
- University of Ottawa
- Ottawa
- K1N 6N5 Canada
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28
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Ji R, Zhai S, Zheng W, Xiao Z, An Q, Zhang F. Enhanced metal–support interactions between Pd NPs and ZrSBA-15 for efficient aerobic benzyl alcohol oxidation. RSC Adv 2016. [DOI: 10.1039/c6ra17272e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Towards the aerobic oxidation of alcohols, palladium nanoparticle immobilized mesoporous catalysts have been extensively investigated; however, the preparation of efficient catalytic materials without using complexing moieties remains a challenge.
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Affiliation(s)
- Ran Ji
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Shangru Zhai
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Wei Zheng
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Zuoyi Xiao
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Qingda An
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Feng Zhang
- Faculty of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
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29
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Schneider D, Mehlhorn D, Zeigermann P, Kärger J, Valiullin R. Transport properties of hierarchical micro–mesoporous materials. Chem Soc Rev 2016; 45:3439-67. [DOI: 10.1039/c5cs00715a] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This work provides an overview of different experimental techniques of diffusion measurements in porous materials and discusses transport properties of several classes of hierarchically organized micro-mesoporous materials.
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Affiliation(s)
- Daniel Schneider
- Faculty of Physics and Earth Sciences
- University of Leipzig
- Leipzig
- Germany
| | - Dirk Mehlhorn
- Faculty of Physics and Earth Sciences
- University of Leipzig
- Leipzig
- Germany
| | - Philipp Zeigermann
- Faculty of Physics and Earth Sciences
- University of Leipzig
- Leipzig
- Germany
| | - Jörg Kärger
- Faculty of Physics and Earth Sciences
- University of Leipzig
- Leipzig
- Germany
| | - Rustem Valiullin
- Faculty of Physics and Earth Sciences
- University of Leipzig
- Leipzig
- Germany
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30
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Haidasz EA, Van Kessel ATM, Pratt DA. A Continuous Visible Light Spectrophotometric Approach To Accurately Determine the Reactivity of Radical-Trapping Antioxidants. J Org Chem 2015; 81:737-44. [DOI: 10.1021/acs.joc.5b02183] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Evan A. Haidasz
- Department of Chemistry and
Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Antonius T. M. Van Kessel
- Department of Chemistry and
Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Derek A. Pratt
- Department of Chemistry and
Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
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32
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Decan MR, Scaiano JC. Study of Single Catalytic Events at Copper-in-Charcoal: Localization of Click Activity Through Subdiffraction Observation of Single Catalytic Events. J Phys Chem Lett 2015; 6:4049-4053. [PMID: 26722775 DOI: 10.1021/acs.jpclett.5b01481] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Single molecule fluorescence microscopy reveals that copper-in-charcoal--a high performance click catalyst- has remarkably few catalytic sites, with 90% of the charcoal particles being inactive, and for the catalytic ones the active sites represent a minute fraction (∼0.003%) of the surface. The intermittent nature of the catalytic events enables subdiffraction resolution and mapping of the catalytic sites.
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Affiliation(s)
- Matthew R Decan
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5 Canada
| | - Juan C Scaiano
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa , Ottawa, Ontario K1N 6N5 Canada
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33
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Wirtz M, Grüter A, Heib F, Huch V, Zapp J, Herten DP, Schmitt M, Jung G. A two-color fluorogenic carbene complex for tagging olefins via metathesis reaction. Methods Appl Fluoresc 2015; 3:044001. [DOI: 10.1088/2050-6120/3/4/044001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Binder T, Lauerer A, Chmelik C, Haase J, Kärger J, Ruthven DM. Microimaging of Transient Intracrystalline Concentration Profiles during Two-Component Uptake of Light Hydrocarbon–Carbon Dioxide Mixtures by DDR-Type Zeolites. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02163] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomas Binder
- Faculty
of Physics and Earth Sciences, University of Leipzig, Linnéstraße
5, 04103 Leipzig, Germany
| | - Alexander Lauerer
- Faculty
of Physics and Earth Sciences, University of Leipzig, Linnéstraße
5, 04103 Leipzig, Germany
| | - Christian Chmelik
- Faculty
of Physics and Earth Sciences, University of Leipzig, Linnéstraße
5, 04103 Leipzig, Germany
| | - Jürgen Haase
- Faculty
of Physics and Earth Sciences, University of Leipzig, Linnéstraße
5, 04103 Leipzig, Germany
| | - Jörg Kärger
- Faculty
of Physics and Earth Sciences, University of Leipzig, Linnéstraße
5, 04103 Leipzig, Germany
| | - Douglas M. Ruthven
- Department
of Chemical and Biological Engineering, University of Maine, Orono, Maine 04469, United States
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35
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Zhao X, Xu J, Wang A, Zhang T. Porous carbon in catalytic transformation of cellulose. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60942-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Prieto G, Schüth F. Bridging the gap between insightful simplicity and successful complexity: From fundamental studies on model systems to technical catalysts. J Catal 2015. [DOI: 10.1016/j.jcat.2014.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Zhang X, Wang B, Wang C, Chen L, Xiao Y. Monitoring Lipid Peroxidation within Foam Cells by Lysosome-Targetable and Ratiometric Probe. Anal Chem 2015. [DOI: 10.1021/acs.analchem.5b01428] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xinfu Zhang
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P.R. China
| | - Benlei Wang
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P.R. China
| | - Chao Wang
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P.R. China
| | - Lingcheng Chen
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P.R. China
| | - Yi Xiao
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P.R. China
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38
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Qi Y, Geib T, Huynh AM, Jung G, Volmer DA. Fragmentation patterns of boron-dipyrromethene (BODIPY) dyes by electrospray ionization high-resolution tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:885-890. [PMID: 26377017 DOI: 10.1002/rcm.7179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 01/24/2015] [Accepted: 02/21/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE 4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene derivatives (BODIPYs) are fluorescent organic dyes that are widely used as non-radioactive labels in biological analyses. The fragmentation behaviour of ten structurally related BODIPYs was studied using tandem mass spectrometry (MS/MS), to support the structural elucidation process during synthesis. METHODS The BODIPYs were investigated by electrospray ionization (ESI)-MS/MS, utilizing collision-induced dissociation (CID) data from triple quadrupole MS and high-resolution, accurate mass CID data from Fourier transform ion cyclotron resonance (FTICR) experiments. RESULTS Unusual radical molecular cations ([M](+•)) were formed directly during the ESI process. These radical species dissociated into a large range of product ions during the subsequent CID experiments. Superimposed dissociations originating from parallel [M](+•) and [M+H](+) decompositions significantly complicated the interpretation of the MS/MS spectra. CONCLUSIONS Detailed dissociation mechanisms were proposed in this study for BODIPY dyes. The elemental formulae of CID product ions were unambiguously assigned using FTICR-MS and unique fragment ions were discovered for the rapid identification of methyl, ethyl, butyl, tert-butyl, and phenyl substituents of individual dyes in BODIPY synthesis mixtures by low-resolution MS.
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Affiliation(s)
- Yulin Qi
- Institute of Bioanalytical Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - Timon Geib
- Institute of Bioanalytical Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - Anh-Minh Huynh
- Biophysical Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - Gregor Jung
- Biophysical Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, 66123, Saarbrücken, Germany
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39
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Ristanović Z, Hofmann JP, De Cremer G, Kubarev AV, Rohnke M, Meirer F, Hofkens J, Roeffaers MBJ, Weckhuysen BM. Quantitative 3D Fluorescence Imaging of Single Catalytic Turnovers Reveals Spatiotemporal Gradients in Reactivity of Zeolite H-ZSM-5 Crystals upon Steaming. J Am Chem Soc 2015; 137:6559-68. [PMID: 25867455 PMCID: PMC4448181 DOI: 10.1021/jacs.5b01698] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Optimizing the number, distribution,
and accessibility of Brønsted
acid sites in zeolite-based catalysts is of a paramount importance
to further improve their catalytic performance. However, it remains
challenging to measure real-time changes in reactivity of single zeolite
catalyst particles by ensemble-averaging characterization methods.
In this work, a detailed 3D single molecule, single turnover sensitive
fluorescence microscopy study is presented to quantify the reactivity
of Brønsted acid sites in zeolite H-ZSM-5 crystals upon steaming.
This approach, in combination with the oligomerization of furfuryl
alcohol as a probe reaction, allowed the stochastic behavior of single
catalytic turnovers and temporally resolved turnover frequencies of
zeolite domains smaller than the diffraction limited resolution to
be investigated with great precision. It was found that the single
turnover kinetics of the parent zeolite crystal proceeds with significant
spatial differences in turnover frequencies on the nanoscale and noncorrelated
temporal fluctuations. Mild steaming of zeolite H-ZSM-5 crystals at
500 °C led to an enhanced surface reactivity, with up to 4 times
higher local turnover rates than those of the parent H-ZSM-5 crystals,
and revealed remarkable heterogeneities in surface reactivity. In
strong contrast, severe steaming at 700 °C significantly dealuminated
the zeolite H-ZSM-5 material, leading to a 460 times lower turnover
rate. The differences in measured turnover activities are explained
by changes in the 3D aluminum distribution due to migration of extraframework
Al-species and their subsequent effect on pore accessibility, as corroborated
by time-of-flight secondary ion mass spectrometry (TOF-SIMS) sputter
depth profiling data.
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Affiliation(s)
- Zoran Ristanović
- †Inorganic Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Jan P Hofmann
- †Inorganic Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Gert De Cremer
- ‡Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Alexey V Kubarev
- §Centre for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg 23, 3001 Heverlee, Belgium
| | - Marcus Rohnke
- ∥Institute of Physical Chemistry, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 58, 35392 Giessen, Germany
| | - Florian Meirer
- †Inorganic Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Johan Hofkens
- ‡Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B-3001 Leuven, Belgium
| | - Maarten B J Roeffaers
- §Centre for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg 23, 3001 Heverlee, Belgium
| | - Bert M Weckhuysen
- †Inorganic Chemistry and Catalysis, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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Pan X, Chen Y, Zhao P, Li D, Liu Z. Highly Efficient Solid-Phase Labeling of Saccharides within Boronic Acid Functionalized Mesoporous Silica Nanoparticles. Angew Chem Int Ed Engl 2015; 54:6173-6. [DOI: 10.1002/anie.201500331] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 02/19/2015] [Indexed: 11/11/2022]
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41
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Pan X, Chen Y, Zhao P, Li D, Liu Z. Highly Efficient Solid-Phase Labeling of Saccharides within Boronic Acid Functionalized Mesoporous Silica Nanoparticles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Microimaging transienter Konzentrationsprofile von Reaktant- und Produktmolekülen während einer katalytischen Umwandlung in nanoporösen Materialien. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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43
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Titze T, Chmelik C, Kullmann J, Prager L, Miersemann E, Gläser R, Enke D, Weitkamp J, Kärger J. Microimaging of Transient Concentration Profiles of Reactant and Product Molecules during Catalytic Conversion in Nanoporous Materials. Angew Chem Int Ed Engl 2015; 54:5060-4. [DOI: 10.1002/anie.201409482] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 01/12/2015] [Indexed: 11/09/2022]
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Kim J, Chun J, Ryoo R. MFI zeolite nanosheets with post-synthetic Ti grafting for catalytic epoxidation of bulky olefins using H2O2. Chem Commun (Camb) 2015; 51:13102-5. [DOI: 10.1039/c5cc04510j] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The external surfaces of the surfactant-directed, 2.5 nm MFI zeolite nanosheets were grafted with Ti using titanium(iv) butoxide.
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Affiliation(s)
- Jaeheon Kim
- Department of Chemistry
- KAIST
- Daejeon 305-701
- Korea
- Center for Nanomaterials and Chemical Reactions
| | - Joonsoo Chun
- Department of Chemistry
- KAIST
- Daejeon 305-701
- Korea
- Center for Nanomaterials and Chemical Reactions
| | - Ryong Ryoo
- Department of Chemistry
- KAIST
- Daejeon 305-701
- Korea
- Center for Nanomaterials and Chemical Reactions
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Collard X, Louette P, Fiorilli S, Aprile C. High surface area zincosilicates as efficient catalysts for the synthesis of ethyl lactate: an in-depth structural investigation. Phys Chem Chem Phys 2015; 17:26756-65. [DOI: 10.1039/c5cp03577e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel extra-small Zn-MCM-41 mesoporous materials were successfully prepared following a straightforward synthesis route. The insertion of zinc as single site species was investigated for the first time using XPS via the Auger parameter in a Wagner plot representation. The XPS findings resulted in excellent agreement with IR analysis.
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Affiliation(s)
- Xavier Collard
- Unit of Nanomaterial Chemistry (CNano)
- Department of Chemistry
- University of Namur (UNamur)
- Rue de Bruxelles 61
- 5000 Namur
| | - Pierre Louette
- Department of Physics
- Research Center in Physics of Matter and Radiation (PMR)
- University of Namur (UNamur)
- 5000 Namur
- Belgium
| | - Sonia Fiorilli
- Department of Applied Science and Technology
- Politecnico di Torino
- Institute of Chemistry
- Corso Duca degli Abruzzi, 24
- 10129 Torino
| | - Carmela Aprile
- Unit of Nanomaterial Chemistry (CNano)
- Department of Chemistry
- University of Namur (UNamur)
- Rue de Bruxelles 61
- 5000 Namur
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46
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Ristanović Z, Kerssens MM, Kubarev AV, Hendriks FC, Dedecker P, Hofkens J, Roeffaers MBJ, Weckhuysen BM. High-Resolution Single-Molecule Fluorescence Imaging of Zeolite Aggregates within Real-Life Fluid Catalytic Cracking Particles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410236] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Ristanović Z, Kerssens MM, Kubarev AV, Hendriks FC, Dedecker P, Hofkens J, Roeffaers MBJ, Weckhuysen BM. High-resolution single-molecule fluorescence imaging of zeolite aggregates within real-life fluid catalytic cracking particles. Angew Chem Int Ed Engl 2014; 54:1836-40. [PMID: 25504139 PMCID: PMC4506548 DOI: 10.1002/anie.201410236] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Indexed: 11/07/2022]
Abstract
Fluid catalytic cracking (FCC) is a major process in oil refineries to produce gasoline and base chemicals from crude oil fractions. The spatial distribution and acidity of zeolite aggregates embedded within the 50–150 μm-sized FCC spheres heavily influence their catalytic performance. Single-molecule fluorescence-based imaging methods, namely nanometer accuracy by stochastic chemical reactions (NASCA) and super-resolution optical fluctuation imaging (SOFI) were used to study the catalytic activity of sub-micrometer zeolite ZSM-5 domains within real-life FCC catalyst particles. The formation of fluorescent product molecules taking place at Brønsted acid sites was monitored with single turnover sensitivity and high spatiotemporal resolution, providing detailed insight in dispersion and catalytic activity of zeolite ZSM-5 aggregates. The results point towards substantial differences in turnover frequencies between the zeolite aggregates, revealing significant intraparticle heterogeneities in Brønsted reactivity.
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Affiliation(s)
- Zoran Ristanović
- Debye Institute for Nanomaterials Science, Faculty of ScienceUtrecht University, Universiteitsweg 99, 3584 CG, Utrecht (The Netherlands)
| | - Marleen M Kerssens
- Debye Institute for Nanomaterials Science, Faculty of ScienceUtrecht University, Universiteitsweg 99, 3584 CG, Utrecht (The Netherlands)
| | - Alexey V Kubarev
- Centre for Surface Chemistry and Catalysis, Faculty of Bioscience EngineeringKU Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium)
| | - Frank C Hendriks
- Debye Institute for Nanomaterials Science, Faculty of ScienceUtrecht University, Universiteitsweg 99, 3584 CG, Utrecht (The Netherlands)
| | - Peter Dedecker
- Department of Chemistry, Faculty of Sciences, KU LeuvenCelestijnenlaan 200 F, 3001 Leuven (Belgium)
| | - Johan Hofkens
- Department of Chemistry, Faculty of Sciences, KU LeuvenCelestijnenlaan 200 F, 3001 Leuven (Belgium)
| | - Maarten B J Roeffaers
- Centre for Surface Chemistry and Catalysis, Faculty of Bioscience EngineeringKU Leuven, Kasteelpark Arenberg 23, 3001 Heverlee (Belgium)
- *E-mail: E-mail:
| | - Bert M Weckhuysen
- Debye Institute for Nanomaterials Science, Faculty of ScienceUtrecht University, Universiteitsweg 99, 3584 CG, Utrecht (The Netherlands)
- *E-mail: E-mail:
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48
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Synthesis of submicrometer-sized Sn-MCM-41 particles and their catalytic performance in Baeyer-Villiger oxidation. Chem Res Chin Univ 2014. [DOI: 10.1007/s40242-014-4204-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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50
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