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Xue T, Wei Y, Yu C, Zhou Z, Zhang F. RAFT polymerization of MMA in channels of different mesoporous materials. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-023-02734-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Abd El‐Mageed AIA, Shalan AE, Mohamed LA, Essawy HA, Taha F, Dyab AKF. Effect of
pH
and zeta potential of Pickering stabilizing magnetite nanoparticles on the features of magnetized polystyrene microspheres. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25571] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ahmed I. A. Abd El‐Mageed
- Chemistry Department, Faculty of Science Minia University Minia Egypt
- Nanoscience and Technology, Advanced Basic Science Galala University Galala Egypt
| | - Ahmed Esmail Shalan
- Electronic and Magnetic Materials Department, Advanced Materials Division Central Metallurgical Research and Development Institute (CMRDI) Cairo Egypt
- BCMaterials‐Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park Leioa Spain
| | - Lamiaa A. Mohamed
- Chemistry Department, Faculty of Science Minia University Minia Egypt
| | - Hisham A. Essawy
- Department of Polymers and Pigments National Research Centre Cairo Egypt
| | - Fouad Taha
- Chemistry Department, Faculty of Science Minia University Minia Egypt
| | - Amro K. F. Dyab
- Chemistry Department, Faculty of Science Minia University Minia Egypt
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Kuchkina NV, Haskell AK, Sorokina SA, Torozova AS, Nikoshvili LZ, Sulman EM, Stein BD, Morgan DG, Bronstein LM, Shifrina ZB. Pd Catalyst Based on Hyperbranched Polypyridylphenylene Formed In Situ on Magnetic Silica Allows for Excellent Performance in Suzuki-Miyaura Reaction. ACS APPLIED MATERIALS & INTERFACES 2020; 12:22170-22178. [PMID: 32320210 DOI: 10.1021/acsami.0c04357] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Here, for the first time, we developed a catalytic composite by forming a thin layer of a cross-linked hyperbranched pyridylphenylene polymer (PPP) on the surface of mesoporous magnetic silica (Fe3O4-SiO2, MS) followed by complexation with Pd species. The interaction of Pd acetate (PdAc) with pyridine units of the polymer results in the formation of Pd2+ complexes which are evenly distributed through the PPP layer. The MS-PPP-PdAc catalyst was tested in the Suzuki-Miyaura cross-coupling reaction with four different para-Br-substituted arenes, demonstrating enhanced catalytic properties for substrates containing electron withdrawing groups, and especially, for 4-bromobenzaldehyde. In this case, 100% selectivity and conversion were achieved with TOF of >23 000 h-1 at a very low Pd loading (0.032 mol %), a remarkable performance in this reaction. We believe these exceptional catalytic properties are due to the hyperbranched polymer architecture, which allows excellent stabilization of catalytic species as well as a favorable space for reacting molecules. Additionally, the magnetic character of the support allows for easy magnetic separation during the catalyst synthesis, purification, and reuse, resulting in energy and materials savings. These factors and excellent reusability of MS-PPP-PdAc in five consecutive uses make this catalyst promising for a variety of catalytic reactions.
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Affiliation(s)
- Nina V Kuchkina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russia
| | - Angela K Haskell
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Svetlana A Sorokina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russia
| | - Alexandra S Torozova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russia
| | - Linda Zh Nikoshvili
- Department of Biotechnology and Chemistry, Tver State Technical University, 22 A. Nikitina Street, 170026 Tver, Russia
| | - Esther M Sulman
- Department of Biotechnology and Chemistry, Tver State Technical University, 22 A. Nikitina Street, 170026 Tver, Russia
| | - Barry D Stein
- Department of Biology, Indiana University, 1001 East Third Street, Bloomington, Indiana 47405, United States
| | - David Gene Morgan
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Lyudmila M Bronstein
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russia
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
- Faculty of Science, Department of Physics, King Abdulaziz University, P.O. Box 80303, Jeddah 21589, Saudi Arabia
| | - Zinaida B Shifrina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russia
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