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Guadalupe Martin M, Lázaro-Martínez JM, Martín SE, Uberman PM, Budén ME. Anthraquinone-Modified Silica Nanoparticles as Heterogeneous Photocatalyst for the Oxidative Hydroxylation of Arylboronic Acids. Chemistry 2023:e202303382. [PMID: 38150600 DOI: 10.1002/chem.202303382] [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: 10/13/2023] [Revised: 12/13/2023] [Accepted: 12/27/2023] [Indexed: 12/29/2023]
Abstract
In this work, the synthesis and characterization of a heterogeneous photocatalyst based on spherical silica nanoparticles superficially modified with anthraquinone 2-carboxylic acid (AQ-COOH) are presented. The nanomaterial was characterized by TEM, SEM, FT-IR, diffuse reflectance, fluorescence, NMR, DLS, XRD and XPS. These analyses confirm the covalent linking of AQ-COOH with the NH2 functionality in the nanomaterial and, more importantly, the photocatalyst retains its photophysical properties once bound. The heterogeneous photocatalyst was successfully employed in the aerobic hydroxylation of arylboronic acids to phenols under sustainable reaction conditions. Phenols were obtained in high yields (up to 100 %) with low catalyst loading (3.5 mol %), reaching TOF values of 3.7 h-1 . Using 2-propanol as solvent at room temperature, the visible light photocatalysis produced H2 O2 as a key intermediate to promote the aerobic hydroxylation of arylboronic acids. The heterogeneous photocatalyst was reused at least 5 times, without modification of the nanomaterial structure and morphology. This simple heterogeneous system showed great catalytic activity under sustainable reaction conditions.
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Affiliation(s)
- María Guadalupe Martin
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
- Instituto de Investigaciones en Fisicoquímica de Córdoba-INFIQC-CONICET-, Universidad Nacional de Córdoba, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Juan Manuel Lázaro-Martínez
- Departamento de Ciencias Químicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, C1113AAD, Ciudad Autónoma de Buenos Aires, Argentina
- Instituto Química y Metabolismo del Fármaco IQUIMEFA-UBA-CONICET, Junín 956, C1113AAD, Ciudad Autónoma de Buenos Aires, Argentina
| | - Sandra Elizabeth Martín
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
- Instituto de Investigaciones en Fisicoquímica de Córdoba-INFIQC-CONICET-, Universidad Nacional de Córdoba, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Paula Marina Uberman
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
- Instituto de Investigaciones en Fisicoquímica de Córdoba-INFIQC-CONICET-, Universidad Nacional de Córdoba, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - María Eugenia Budén
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina
- Instituto de Investigaciones en Fisicoquímica de Córdoba-INFIQC-CONICET-, Universidad Nacional de Córdoba, Haya de La Torre y Medina Allende, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
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Bruzon DA, De Jesus AP, Bautista CD, Martinez IS, Paderes MC, Tapang GA. Enhanced photo-reactivity of polyanthracene in the VIS region. PLoS One 2022; 17:e0271280. [PMID: 35802661 PMCID: PMC9269904 DOI: 10.1371/journal.pone.0271280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 06/27/2022] [Indexed: 12/04/2022] Open
Abstract
The wavelength-dependent photo-reactivity of polyanthracene was explored upon UV-C and VIS light irradiation. The material was prepared via one-pot chemical oxidation route using FeCl3 as oxidizing agent. A decrease in surface hydrophobicity of a polyanthracene-coated poly(methylmethacrylate) substrate from 109.11° to 60.82° was observed upon UV-C exposure for 48 hrs which was attributed to increase in oxygen content at the surface, as validated by energy dispersive X-ray spectroscopy. Upon exposure to ultraviolet-visible LEDs, photo-dimerization of polyanthracene in solution occurred and was monitored using UV-VIS spectroscopy. The photo-dimer product formation decreased from 381 nm to 468 nm and was found to be higher for the polyanthracene material compared to the monomer anthracene. At 381 nm, photo-dimerization of the material was found to be approx. 4x more efficient than the non-substituted monomer counterpart. Results obtained show that photo-dimerization of polyanthracene will proceed upon exposure with visible light LEDs with reduction in efficiency at longer wavelengths. To compensate, irradiation power of the light source and irradiation time were increased.
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Affiliation(s)
- Dwight Angelo Bruzon
- Materials Science and Engineering Program, College of Science, University of the Philippines Diliman, Quezon City, Philippines
- * E-mail:
| | - Anna Pamela De Jesus
- Institute of Mathematical Sciences and Physics, College of Arts and Sciences, University of the Philippines Los Banos, Laguna, Philippines
| | - Chris Dion Bautista
- National Institute of Physics, College of Science, University of the Philippines Diliman, Quezon City, Philippines
| | - Imee Su Martinez
- Institute of Chemistry, College of Science, University of the Philippines Diliman, Quezon City, Philippines
| | - Monissa C. Paderes
- Institute of Chemistry, College of Science, University of the Philippines Diliman, Quezon City, Philippines
| | - Giovanni A. Tapang
- National Institute of Physics, College of Science, University of the Philippines Diliman, Quezon City, Philippines
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Wang F, Yu D, Chen Y, Sun J, Wang JY, Zhou MD. Cross-dehydrogenative Coupling of N-Aryl Tetrahydroisoquinolines Catalyzed by an Anthraquinone-containing Polymeric Photosensitizer. Chem Asian J 2021; 16:4087-4094. [PMID: 34668333 DOI: 10.1002/asia.202100978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/19/2021] [Indexed: 11/09/2022]
Abstract
This work reports the photocatalytic application of an anthraquinone-containing polymeric photosensitizer (AQ-PHEMA) in the visible light-induced cross-dehydrogenative-coupling of N-aryl tetrahydroisoquinolines with several nucleophiles, including nitromethane, 1-methyl-2-alkyl ketone and dialkyl (aryl) phosphine oxide. The results revealed that the reaction could be catalyzed by AQ-PHEMA efficiently to afford a series of 1-substituted-2-aryl-1,2,3,4-tetrahydroisoquinolines in good to excellent yields with nice substrate tolerance under aerobic conditions at room temperature. The practical application potential was also showcased by a gram-scale synthesis. More importantly, the utilization of AQ-PHEMA as a heterogeneous photosensitizer also showed nice recyclability and reusability of the catalyst, whereas AQ-PHEMA can be easily separated and reused for at least 8 times without significant loss of photocatalytic activity.
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Affiliation(s)
- Fei Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Dan Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
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