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Dias HJ, Santos WH, Filho LCS, Crevelin EJ, McIndoe JS, Vessecchi R, Crotti AEM. Electrospray ionization tandem mass spectrometry of 4-aryl-3,4-dihydrocoumarins. JOURNAL OF MASS SPECTROMETRY : JMS 2024; 59:e5062. [PMID: 38831552 DOI: 10.1002/jms.5062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/06/2024] [Accepted: 05/14/2024] [Indexed: 06/05/2024]
Abstract
We have investigated the gas-phase fragmentation reactions of 11 synthetic 4-aryl-3,4-dihydrocoumarins by electrospray ionization tandem mass spectrometry (ESI-MS/MS) on a quadrupole-time-of flight (Q-TOF) hybrid mass spectrometer. We have also estimated thermochemical data for the protonated coumarins (precursor ion A) and product ion structures by computational chemistry at a B3LYP level of theory to establish the ion structures and to rationalize the fragmentation pathways. The most abundant ions in the product ion spectra of coumarins 1-11 resulted from C8H8O2, CO2, C4H4O3, C8H10O3, C8H8O2, and CH3OH eliminations through retro-Diels-Alder (RDA) reactions, remote hydrogen rearrangements (β-eliminations), and β-lactone ring contraction. Although the investigated coumarins shared most of the fragmentation pathways, formation of a benzylic product ion and its corresponding tropylium ion was diagnostic of the substituents at ring C. The thermochemical data revealed that the nature and position of the substituents at ring C played a key role in the formation of this product ion and determined its relative intensity in the product ion spectrum. The results of this study contribute to knowledge of the gas-phase ion chemistry of this important class of organic compounds.
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Affiliation(s)
- Herbert J Dias
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Goiano Federal Institute of Education, Science, and Technology, Campus Urutaí, Urutaí, Brazil
| | - William H Santos
- Department of Chemistry, Faculty of Sciences at Bauru, São Paulo State University, Bauru, Brazil
| | - Luis C S Filho
- Department of Chemistry, Faculty of Sciences at Bauru, São Paulo State University, Bauru, Brazil
| | - Eduardo J Crevelin
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - J Scott McIndoe
- Department of Chemistry, University of Victoria, Victoria, British Columbia, Canada
| | - Ricardo Vessecchi
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Antônio E M Crotti
- Department of Chemistry, Faculty of Philosophy, Science and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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Kamei K, Shimizu T, Harano K, Nakamura E. Aryl Radical Addition to Curvatures of Carbon Nanohorns for Single-Molecule-Level Molecular Imaging. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200232] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ko Kamei
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Toshiki Shimizu
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Koji Harano
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Eiichi Nakamura
- Department of Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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3
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Functionalized Carbon Nanohorns as Drug Delivery Platforms. Methods Mol Biol 2020. [PMID: 33113124 DOI: 10.1007/978-1-0716-0920-0_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Carbon nanohorns (CNHs) resembling a single-layered graphene sheet wrapped in a conical shape can be chemically modified in order to immobilize, carry, and release biologically active molecules. Here, we describe the major routes for the preparation of CNH-based drug delivery platforms, via covalent coupling and encapsulation, proficient to facilitate the design of sophisticated drug nanocarriers.
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Kagkoura A, Tagmatarchis N. Carbon Nanohorn-Based Electrocatalysts for Energy Conversion. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1407. [PMID: 32707696 PMCID: PMC7408240 DOI: 10.3390/nano10071407] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 01/06/2023]
Abstract
In the context of even more growing energy demands, the investigation of alternative environmentally friendly solutions, like fuel cells, is essential. Given their outstanding properties, carbon nanohorns (CNHs) have come forth as promising electrocatalysts within the nanocarbon family. Carbon nanohorns are conical nanostructures made of sp2 carbon sheets that form aggregated superstructures during their synthesis. They require no metal catalyst during their preparation and they are inexpensively produced in industrial quantities, affording a favorable candidate for electrocatalytic reactions. The aim of this article is to provide a comprehensive overview regarding CNHs in the field of electrocatalysis and especially, in oxygen reduction, methanol oxidation, and hydrogen evolution, as well as oxygen evolution from water splitting, underlining the progress made so far, and pointing out the areas where significant improvement can be achieved.
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Affiliation(s)
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece;
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Pippa N, Stangel C, Kastanas I, Triantafyllopoulou E, Naziris N, Stellas D, Zhang M, Yudasaka M, Demetzos C, Tagmatarchis N. Carbon nanohorn/liposome systems: Preformulation, design and in vitro toxicity studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110114. [PMID: 31546408 DOI: 10.1016/j.msec.2019.110114] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/29/2019] [Accepted: 08/22/2019] [Indexed: 12/25/2022]
Abstract
In the present work, the convergence of two different drug delivery systems is investigated, namely the combination of carbon nanohorns (CNHs) and liposomes. Our effort initially included the synthesis of two conversely charged carbon nanohorns and their subsequent analysis through various methods. The study of their effect on the thermotropic behavior of artificial membranes provided an essential assistance for the upcoming liposome preparation, which were estimated for their physicochemical properties. The presence of CNHs alters the calorimetric parameters of the lipids. We also prepared CNHs:liposome systems. The characteristic morphology and secondary spherical superstructure of CNHs is retained in the chimeric materials, suggesting that the interactions with the liposomes do not alter the dahlia-flower-like aggregation of CNHs. Both CNHs-liposome systems exhibit a relatively small cellular cytotoxicity in vitro, tested in mouse embryonic fibroblasts. To summarize, we developed CNHs:liposome platforms with a complete knowledge of their thermotropic, physicochemical, morphological and nanotoxicological characteristics.
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Affiliation(s)
- Natassa Pippa
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece; Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Christina Stangel
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Ioannis Kastanas
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Efstathia Triantafyllopoulou
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Nikolaos Naziris
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Dimitris Stellas
- Biomedical Research Foundation, Academy of Athens, Athens, Greece; Vaccine Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederic, MD, USA
| | - Minfang Zhang
- CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan
| | - Masako Yudasaka
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8565, Japan
| | - Costas Demetzos
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens 15771, Greece.
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens 11635, Greece.
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Karousis N, Suarez-Martinez I, Ewels CP, Tagmatarchis N. Structure, Properties, Functionalization, and Applications of Carbon Nanohorns. Chem Rev 2016; 116:4850-83. [PMID: 27074223 DOI: 10.1021/acs.chemrev.5b00611] [Citation(s) in RCA: 175] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Carbon nanohorns (sometimes also known as nanocones) are conical carbon nanostructures constructed from an sp(2) carbon sheet. Nanohorns require no metal catalyst in their synthesis, and can be produced in industrial quantities. They provide a realistic and useful alternative to carbon nanotubes, and possibly graphene, in a wide range of applications. They also have their own unique behavior due to their specific conical morphology. However, their research and development has been slowed by several factors, notably during synthesis, they aggregate into spherical clusters ∼100 nm in diameter, blocking functionalization and treatment of individual nanocones. This limitation has recently been overcome with a new approach to separating these "dahlia-like" clusters into individual nanocones. In this review, we describe the structure, synthesis, and topology of carbon nanohorns, and provide a detailed review of nanohorn chemistry.
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Affiliation(s)
- Nikolaos Karousis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation , 48 Vassileos Constantinou Avenue, Athens 11635, Greece
| | - Irene Suarez-Martinez
- Nanochemistry Research Institute, Department of Physics, Curtin University of Technology , P.O. Box U1987, Perth, Western Australia 6845, Australia
| | - Christopher P Ewels
- Institut des Materiaux Jean Rouxel, CNRS, Université de Nantes , 2 Rue de la Houssiniere, BP32229, 44322 Nantes, France
| | - Nikos Tagmatarchis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation , 48 Vassileos Constantinou Avenue, Athens 11635, Greece
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Vizuete M, Gómez-Escalonilla MJ, Barrejón M, Fierro JLG, Zhang M, Yudasaka M, Iijima S, Atienzar P, García H, Langa F. Synthesis, characterization and photoinduced charge separation of carbon nanohorn–oligothienylenevinylene hybrids. Phys Chem Chem Phys 2016; 18:1828-37. [DOI: 10.1039/c5cp05734e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new nanohybrids combining carbon nanohorns (CNHs) and oligothienylenevinylenes (nTVs) have been prepared. Light excitation of these nanohybrids induces charge-separated states.
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Affiliation(s)
- María Vizuete
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia
- Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
| | - María J. Gómez-Escalonilla
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia
- Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
| | - Myriam Barrejón
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia
- Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
| | | | - Minfang Zhang
- Nanotube Research Center
- National Institute of Advanced Industrial and Technology
- Ibaraki 305-8565
- Japan
| | - Masako Yudasaka
- Nanotube Research Center
- National Institute of Advanced Industrial and Technology
- Ibaraki 305-8565
- Japan
| | - Sumio Iijima
- Nanotube Research Center
- National Institute of Advanced Industrial and Technology
- Ibaraki 305-8565
- Japan
- Department of Physics
| | - Pedro Atienzar
- Instituto Universitario de Tecnología Química CSIC-UPV
- Universidad Politécnica de Valencia
- Valencia
- Spain
| | - Hermenegildo García
- Instituto Universitario de Tecnología Química CSIC-UPV
- Universidad Politécnica de Valencia
- Valencia
- Spain
| | - Fernando Langa
- Universidad de Castilla-La Mancha
- Instituto de Nanociencia
- Nanotecnología y Materiales Moleculares (INAMOL)
- Toledo
- Spain
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Dai H, Gong L, Xu G, Zhang S, Lu S, Jiang Y, Lin Y, Guo L, Chen G. An electrochemical sensing platform structured with carbon nanohorns for detecting some food borne contaminants. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.08.047] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Chronopoulos D, Karousis N, Ichihashi T, Yudasaka M, Iijima S, Tagmatarchis N. Benzyne cycloaddition onto carbon nanohorns. NANOSCALE 2013; 5:6388-6394. [PMID: 23736828 DOI: 10.1039/c3nr01755a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A facile approach for the covalent functionalization of carbon nanohorns (CNHs) based on the benzyne cycloaddition reaction is presented. The benzynes were in situ generated from either anthranilic acid by decomposition of the internal benzenediazonium-2-carboxylate or from 2-(trimethylsilyl)-phenyl triflate by fluoride ion attack at the silicon atom followed by displacement of the trimethylsilyl group under mild conditions. Moreover, the functionalization reaction was tested and performed under conventional conditions as well as under microwave irradiation. Modified CNHs possessing fused rings onto their graphitic skeleton were fully characterized by means of complementary spectroscopic techniques, thermogravimetric analysis, electron microscopy and light scattering. Moreover, Sonogashira coupling with propargyl alcohol followed by condensation with thioctic acid, to the iodo-modified CNHs obtained from the cycloaddition reaction of 2-amino-5-iodobenzoic acid with CNHs, resulted in the preparation of a new CNH-based material in which endocyclic disulfides are extended from the fused rings onto CNHs. The latter moieties were used to immobilize gold nanoparticles, furnishing the CNH-Au(nano) hybrid material, in which the former were identified with the aid of UV-Vis and EDX spectroscopy.
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Affiliation(s)
- Demetrios Chronopoulos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens 11635, Greece.
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