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Quirós I, Martín M, Pérez-Sánchez C, Rigotti T, Tortosa M. Trityl isocyanide as a general reagent for visible light mediated photoredox-catalyzed cyanations. Chem Sci 2024:d4sc04199b. [PMID: 39149220 PMCID: PMC11320021 DOI: 10.1039/d4sc04199b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Accepted: 08/05/2024] [Indexed: 08/17/2024] Open
Abstract
A photoredox catalytic strategy has been developed to enable the functionalization of a variety of commercially available, structurally different radical precursors by the use of a bench-stable isonitrile as an efficient cyanating reagent. Specifically, a radical-based reaction has provided a mild and convenient procedure for the cyanation of primary, secondary and tertiary radicals derived from widely accessible sp3-hybridized carboxylic acids, alcohols and halides under visible light irradiation. The reaction tolerates a variety of functional groups and it represents a complementary method for the cyanation of structurally different scaffolds that show diverse native functionalities, expanding the scope of previously reported methodologies.
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Affiliation(s)
- Irene Quirós
- Organic Chemistry Department, Faculty of Science, Autonomous University of Madrid (UAM) Madrid 28049 Spain
| | - María Martín
- Organic Chemistry Department, Faculty of Science, Autonomous University of Madrid (UAM) Madrid 28049 Spain
| | - Carla Pérez-Sánchez
- Organic Chemistry Department, Faculty of Science, Autonomous University of Madrid (UAM) Madrid 28049 Spain
| | - Thomas Rigotti
- Organic Chemistry Department, Faculty of Science, Autonomous University of Madrid (UAM) Madrid 28049 Spain
| | - Mariola Tortosa
- Organic Chemistry Department, Faculty of Science, Autonomous University of Madrid (UAM) Madrid 28049 Spain
- Center for Innovation in Advanced Chemistry (ORFEO-CINQA), Autonomous University of Madrid (UAM) Madrid 28049 Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Autonomous University of Madrid (UAM) Madrid 28049 Spain
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3
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Tseytlin O, O'Connell R, Sivashankar V, Bobko AA, Tseytlin M. Rapid Scan EPR Oxygen Imaging in Photoactivated Resin Used for Stereolithographic 3D Printing. 3D PRINTING AND ADDITIVE MANUFACTURING 2021; 8:358-365. [PMID: 34977276 PMCID: PMC8713732 DOI: 10.1089/3dp.2020.0170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Oxygen plays a critical role in the photopolymerization process resulting in the formation of solid structures from liquid resins during three-dimensional (3D) printing: it acts as a polymerization inhibitor. Upon exposure to light, oxygen is depleted. As a result, the polymerization process becomes activated. Electron paramagnetic resonance (EPR) imaging is described as a tool to visualize changes in oxygen distribution caused by light exposure. This nondestructive method uses radio waves and, therefore, is not constrained by optical opacity offering greater penetrating depth. Three proof-of-principle imaging experiments were demonstrated: (1) spatial propagation of the photopolymerization process; (2) oxygen depletion as a result of postcuring; and (3) oxygen visualization in a 3D printed spiral model. Commercial stereolithography (SLA) resin was used in these experiments. Lithium octa-n-butoxynaphthalocyanine (LiNc-BuO) probe was mixed with the resin to permit oxygen imaging. Li-naphthalocyanine probes are routinely used in various EPR applications because of their long-term stability and high functional sensitivity to oxygen. In this study, we demonstrate that EPR imaging has the potential to become a powerful visualization tool in the development of 3D printing technology, including bioprinting and tissue engineering.
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Affiliation(s)
- Oxana Tseytlin
- Biochemistry Department, West Virginia University, Morgantown, West Virginia, USA
- In Vivo Multifunctional Magnetic Resonance Center at Robert C. Byrd Health Sciences Center, and West Virginia University, Morgantown, West Virginia, USA
| | - Ryan O'Connell
- Biochemistry Department, West Virginia University, Morgantown, West Virginia, USA
- In Vivo Multifunctional Magnetic Resonance Center at Robert C. Byrd Health Sciences Center, and West Virginia University, Morgantown, West Virginia, USA
| | - Vignesh Sivashankar
- Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, West Virginia, USA
| | - Andrey A. Bobko
- Biochemistry Department, West Virginia University, Morgantown, West Virginia, USA
- In Vivo Multifunctional Magnetic Resonance Center at Robert C. Byrd Health Sciences Center, and West Virginia University, Morgantown, West Virginia, USA
| | - Mark Tseytlin
- Biochemistry Department, West Virginia University, Morgantown, West Virginia, USA
- In Vivo Multifunctional Magnetic Resonance Center at Robert C. Byrd Health Sciences Center, and West Virginia University, Morgantown, West Virginia, USA
- West Virginia University Cancer Institute, Morgantown, West Virginia, USA
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4
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Huffman JL, Poncelet M, Moore W, Eaton SS, Eaton GR, Driesschaert B. Perchlorinated Triarylmethyl Radical 99% Enriched 13C at the Central Carbon as EPR Spin Probe Highly Sensitive to Molecular Tumbling. J Phys Chem B 2021; 125:7380-7387. [PMID: 34213354 PMCID: PMC8378891 DOI: 10.1021/acs.jpcb.1c03778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Soluble stable radicals are used as spin probes and spin labels for in vitro and in vivo electron paramagnetic resonance (EPR) spectroscopy and imaging applications. We report the synthesis and characterization of a perchlorinated triarylmethyl radical enriched 99% at the central carbon, 13C1-PTMTC. The anisotropy of the hyperfine splitting with the 13C1 (Ax = 26, Ay = 25, Az = 199.5 MHz) and the g (gx = 2.0015, gy = 2.0015, gz = 2.0040) are responsible for a strong effect of the radical tumbling rate on the EPR spectrum. The rotational correlation time can be determined by spectral simulation or via the line width or the apparent Az after calibration, so the spin probe 13C1-PTMTC can be used to measure media microviscosity with high sensitivity.
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Affiliation(s)
- Justin L Huffman
- Department of Pharmaceutical Sciences, West Virginia University, School of Pharmacy, Morgantown, West Virginia 26506, United States.,In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Martin Poncelet
- Department of Pharmaceutical Sciences, West Virginia University, School of Pharmacy, Morgantown, West Virginia 26506, United States.,In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Whylder Moore
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Sandra S Eaton
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Gareth R Eaton
- Department of Chemistry and Biochemistry, University of Denver, Denver, Colorado 80210, United States
| | - Benoit Driesschaert
- Department of Pharmaceutical Sciences, West Virginia University, School of Pharmacy, Morgantown, West Virginia 26506, United States.,In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, West Virginia 26506, United States
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Das P, Ganguly S, Margel S, Gedanken A. Immobilization of Heteroatom-Doped Carbon Dots onto Nonpolar Plastics for Antifogging, Antioxidant, and Food Monitoring Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3508-3520. [PMID: 33705147 DOI: 10.1021/acs.langmuir.1c00471] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
This work presents the facile synthesis of heteroatom-doped fluorescent carbon quantum dots (C-dots), which could serve as an antioxidant. Herein, nitrogen, phosphorous, and sulfur codoped carbon dots (NPSC-dots) have been synthesized by a single-step hydrothermal strategy. Owing to the radical scavenging activity of the NPSC-dots, they were tested against several methods as well as in practical applications. The antioxidant ability of the NPSC-dots was efficiently utilized on plastic films by coating with these NPSC-dots. For the very first time, NPSC-dots were immobilized onto nonpolar plastic films (polypropylene) via photochemical covalent grafting to extend the shelf life of food items or storage without affecting the quality of plastic films. The NPSC-dot-coated PP film with negligible deterioration of transparency was extensively studied using scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FTIR) analysis, X-ray photoelectron spectroscopy (XPS), contact angle measurement, and thermogravimetric analysis (TGA). The fluorescent character, antioxidant ability, and durability under different solvent systems of the coated film were examined. Also, the coated films were extensively and rigorously evaluated against simulated drastic environmental conditions to ensure the durability and antifogging application.
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Affiliation(s)
- Poushali Das
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Departments of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Sayan Ganguly
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Departments of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Shlomo Margel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Departments of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Aharon Gedanken
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Departments of Chemistry, Bar-Ilan University, Ramat-Gan 5290002, Israel
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Trukhin DV, Rogozhnikova OY, Troitskaya TI, Ovcherenko SS, Amosov EV, Tormyshev VM. Novel Acetylene Derivatives of Stable Tetrathiatriarylmethyl Radicals. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428020110032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Trukhin DV, Rogozhnikova OY, Troitskaya TI, Kuzhelev AA, Amosov EV, Halpern HJ, Koval’ VV, Tormyshev VM. New Spin Probes: Tri- and Hexacationic Derivatives of Stable Tetrathiatriarylmethyl Radicals. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2019. [DOI: 10.1134/s1070428019030035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Jia J, Lin B, Gao Y, Jiao Y, Li L, Dong C, Shuang S. Highly luminescent N-doped carbon dots from black soya beans for free radical scavenging, Fe 3+ sensing and cellular imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 211:363-372. [PMID: 30593946 DOI: 10.1016/j.saa.2018.12.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 12/09/2018] [Accepted: 12/18/2018] [Indexed: 05/21/2023]
Abstract
The novel N doped carbon dots (N-CDs) were readily fabricated through one-step pyrolysis method from black soya beans. The obtained N-CDs possessed excellent photoluminescence properties with quantum yield of 38.7 ± 0.64% and dual responsive properties towards free radical and Fe3+. The N-CDs exhibited favorable radical scavenging activity (RSA) against 1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide anion radicals. Fe3+ could induce photoluminescence quenching of N-CDs through static quenching characteristics. The possible quenching mechanism was presented. Combining with negligible toxicity and preferable biocompatibility, the N-CDs were extended to imaging intracellular Fe3+. As an attractive candidate, the N-CDs demonstrated a great potential in free radical scavenging, sensing and cellular imaging.
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Affiliation(s)
- Jing Jia
- Department of Chemistry and Chemical Engineering, Center of Environmental Science and Engineering Research, Shanxi University, Taiyuan 030006, China
| | - Bo Lin
- Department of Chemistry and Chemical Engineering, Center of Environmental Science and Engineering Research, Shanxi University, Taiyuan 030006, China
| | - Yifang Gao
- Department of Chemistry and Chemical Engineering, Center of Environmental Science and Engineering Research, Shanxi University, Taiyuan 030006, China
| | - Yuan Jiao
- Department of Chemistry and Chemical Engineering, Center of Environmental Science and Engineering Research, Shanxi University, Taiyuan 030006, China
| | - Lei Li
- Department of Chemical & Petroleum Engineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Chuan Dong
- Department of Chemistry and Chemical Engineering, Center of Environmental Science and Engineering Research, Shanxi University, Taiyuan 030006, China
| | - Shaomin Shuang
- Department of Chemistry and Chemical Engineering, Center of Environmental Science and Engineering Research, Shanxi University, Taiyuan 030006, China.
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Hintz H, Vanas A, Klose D, Jeschke G, Godt A. Trityl Radicals with a Combination of the Orthogonal Functional Groups Ethyne and Carboxyl: Synthesis without a Statistical Step and EPR Characterization. J Org Chem 2019; 84:3304-3320. [DOI: 10.1021/acs.joc.8b03234] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Henrik Hintz
- Faculty of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, Universitätsstrasse 25, 33615 Bielefeld, Germany
| | - Agathe Vanas
- Laboratory of Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - Daniel Klose
- Laboratory of Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - Gunnar Jeschke
- Laboratory of Physical Chemistry, ETH Zurich, Vladimir-Prelog-Weg 2, 8093 Zurich, Switzerland
| | - Adelheid Godt
- Faculty of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, Universitätsstrasse 25, 33615 Bielefeld, Germany
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Molecular Probes for Evaluation of Oxidative Stress by In Vivo EPR Spectroscopy and Imaging: State-of-the-Art and Limitations. MAGNETOCHEMISTRY 2019. [DOI: 10.3390/magnetochemistry5010013] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oxidative stress, defined as a misbalance between the production of reactive oxygen species and the antioxidant defenses of the cell, appears as a critical factor either in the onset or in the etiology of many pathological conditions. Several methods of detection exist. However, they usually rely on ex vivo evaluation or reports on the status of living tissues only up to a few millimeters in depth, while a whole-body, real-time, non-invasive monitoring technique is required for early diagnosis or as an aid to therapy (to monitor the action of a drug). Methods based on electron paramagnetic resonance (EPR), in association with molecular probes based on aminoxyl radicals (nitroxides) or hydroxylamines especially, have emerged as very promising to meet these standards. The principles involve monitoring the rate of decrease or increase of the EPR signal in vivo after injection of the nitroxide or the hydroxylamine probe, respectively, in a pathological versus a control situation. There have been many successful applications in various rodent models. However, current limitations lie in both the field of the technical development of the spectrometers and the molecular probes. The scope of this review will mainly focus on the latter.
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Khramtsov VV, Davies MJ. Special issue for the International Conference on Electron Paramagnetic Resonance Spectroscopy and Imaging of Biological Systems (EPR-2017). Free Radic Res 2018; 52:305-306. [PMID: 29669487 DOI: 10.1080/10715762.2018.1445852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Valery V Khramtsov
- a West Virginia University Health Sciences Center, Biochemistry , Morgantown , WV , USA
| | - Michael Jonathan Davies
- b Department of Biomedical Sciences , Panum Institute, University of Copenhagen , Copenhagen , Denmark
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Scheinok S, Leveque P, Sonveaux P, Driesschaert B, Gallez B. Comparison of different methods for measuring the superoxide radical by EPR spectroscopy in buffer, cell lysates and cells. Free Radic Res 2018; 52:1182-1196. [PMID: 30362382 DOI: 10.1080/10715762.2018.1541321] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
As superoxide anion is of keen interest in biomedical research, it is highly desirable to have a technique allowing its detection sensitively and specifically in biological media. If electron paramagnetic resonance (EPR) techniques and probes have been individually described in the literature, there is actually no comparison of these techniques in the same conditions that may help guiding researchers for selecting the most appropriate approach. The aim of the present study was to compare different EPR strategies in terms of sensitivity and specificity to detect superoxide (vs. hydroxyl radical). Three main classes of EPR probes were used, including paramagnetic superoxide scavengers (such as nitroxides TEMPOL and mitoTEMPO as well as trityl CT-03), a spin trap (DIPPMPO), and diamagnetic superoxide scavengers (such as cyclic hydroxylamines CMH and mitoTEMPO-H). We analysed the reactivity of the different probes in the presence of a constant production of superoxide or hydroxyl radical in buffers and in cell lysates. We also assessed the performances of the different probes to detect superoxide produced by RAW264.7 macrophages stimulated by phorbol 12-myristate 13-acetate. In our conditions and models, we found that nitroxides were not specific for superoxide. CT-03 was specific, but the sensitivity of detection was low. Comparatively, we found that nitrone DIPPMPO and cyclic hydroxylamine CMH were good candidates to sensitively and specifically detect superoxide in complex biological media, CMH offering the best sensitivity.
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Affiliation(s)
- Samantha Scheinok
- a Biomedical Magnetic Resonance , Université Catholique de Louvain, Louvain Drug Research Institute (LDRI) , Brussels , Belgium
| | - Philippe Leveque
- a Biomedical Magnetic Resonance , Université Catholique de Louvain, Louvain Drug Research Institute (LDRI) , Brussels , Belgium
| | - Pierre Sonveaux
- b Institut de Recherches Expérimentales et Cliniques (IREC) Pole of Pharmacology and Therapeutics , Université Catholique de Louvain , Brussels , Belgium
| | - Benoit Driesschaert
- c Department of Pharmaceutical Sciences School of Pharmacy & In Vivo Multifunctional Magnetic Resonance Center , West Virginia University , Morgantown , WV , USA
| | - Bernard Gallez
- a Biomedical Magnetic Resonance , Université Catholique de Louvain, Louvain Drug Research Institute (LDRI) , Brussels , Belgium
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Tan X, Tao S, Liu W, Rockenbauer A, Villamena FA, Zweier JL, Song Y, Liu Y. Synthesis and Characterization of the Perthiatriarylmethyl Radical and Its Dendritic Derivatives with High Sensitivity and Selectivity to Superoxide Radical. Chemistry 2018; 24:6958-6967. [DOI: 10.1002/chem.201800134] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/03/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Xiaoli Tan
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Shanqing Tao
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Wenbo Liu
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry; Hungarian Academy of Sciences and; Department of Physics; Budapest University of Technology and Economics; Budafoki ut 8 1111 Budapest Hungary
| | - Frederick A. Villamena
- Department of Biological Chemistry and Pharmacology; College of Medicine; The Ohio State University; Columbus OH 43210 USA
| | - Jay L. Zweier
- Center for Biomedical EPR Spectroscopy and Imaging; The Davis Heart and Lung Research Institute; Division of Cardiovascular Medicine; Department of Internal Medicine; The Ohio State University; Columbus OH 43210 USA
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
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