1
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Iizuka K, Maegawa Y, Shimoyama Y, Sakamoto K, Kayakiri N, Goto Y, Naganawa Y, Tanaka S, Yoshida M, Inagaki S, Nakajima Y. Suzuki-Miyaura Cross-Coupling Reaction Using Palladium Catalysts Supported on Phosphine Periodic Mesoporous Organosilica. Chemistry 2024; 30:e202303159. [PMID: 38018377 DOI: 10.1002/chem.202303159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 11/30/2023]
Abstract
Phosphine periodic mesoporous organosilicas (R-P-PMO-TMS: R=Ph, tBu), which possess electron-donating alkyl substituents on the phosphorus atom, were synthesized using bifunctional compounds with alkoxysilyl- and phosphino groups, bis[3-(triethoxysilyl)propyl]phenylphosphine borane (1 a) and bis[3-(triethoxysilyl)propyl]-tert-butylphosphine borane (1 b). Immobilization of Pd(0) species was performed to give R-P-Pd-PMO-TMS: R=Ph (2 a), tBu (3 a), respectively. The Pd(0) immobilized 2 a and 3 a were applicable as catalysts for Suzuki-Miyaura cross-coupling reactions of aryl chlorides with phenylboronic acid. It was revealed that 3 a bearing more electron-donating tBu groups exhibited higher catalytic activity. Various functional groups including both electron withdrawing and donating substituents were compatible in the system. The recyclability of 3 a was examined to support its moderate utility for the recycle use.
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Affiliation(s)
- Kosuke Iizuka
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
- Tokyo Institute of Technology, School of Materials and Chemical Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | | | - Yoshihiro Shimoyama
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Kei Sakamoto
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Natsuko Kayakiri
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Yasutomo Goto
- Toyota Central R&D Labs., Inc., Nagakute, Aichi, 480-1192, Japan
| | - Yuki Naganawa
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Shinji Tanaka
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Masaru Yoshida
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Shinji Inagaki
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
- Toyota Central R&D Labs., Inc., Nagakute, Aichi, 480-1192, Japan
| | - Yumiko Nakajima
- Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
- Tokyo Institute of Technology, School of Materials and Chemical Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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2
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Lin XT, Ishizaka Y, Maegawa Y, Takeuchi K, Inagaki S, Matsumoto K, Choi JC. 1,10-Phenanthroline-based periodic mesoporous organosilica: from its synthesis to its application in the cobalt-catalyzed alkyne hydrosilylation. RSC Adv 2023; 13:7828-7833. [PMID: 36909752 PMCID: PMC9996227 DOI: 10.1039/d2ra08272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 03/01/2023] [Indexed: 03/11/2023] Open
Abstract
1,10-Phenanthroline (Phen) is a typical ligand for metal complexation and various metal/Phen complexes have been applied as a catalyst in several organic transformations. This study reports the synthesis of a Phen-based periodic mesoporous organosilica (Phen-PMO) with the Phen moieties being directly incorporated into the organosilica framework. The Phen-PMO precursor, 3,8-bis[(triisopropoxysilyl)methyl]-1,10-phenanthroline (1a), was prepared via the Kumada-Tamao-Corriu cross-coupling of 3,8-dibromo-1,10-phenanthroline and [(triisopropoxysilyl)methyl]magnesium chloride. The co-condensation of 1a and 1,2-bis(triethoxysilyl)ethane in the presence of P123 as the template surfactant afforded Phen-PMO 3 with an ordered 2-D hexagonal mesoporous structure as confirmed by nitrogen adsorption/desorption measurements, X-ray diffraction, and transition electron microscopy. Co(OAc)2 was immobilized on Phen-PMO 3, and the obtained complex showed good catalytic activity for the hydrosilylation reaction of phenylacetylene with phenylsilane.
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Affiliation(s)
- Xiao-Tao Lin
- National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan .,Graduate School of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8573 Japan
| | - Yusuke Ishizaka
- National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | | | - Katsuhiko Takeuchi
- National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | - Shinji Inagaki
- National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan .,Toyota Central R&D Labs., Inc. Nagakute Aichi 480-1192 Japan
| | - Kazuhiro Matsumoto
- National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan .,Graduate School of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8573 Japan
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3
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Naganawa Y, Fujita A, Sakamoto K, Tanaka S, Sato K, Nakajima Y. Borane-Protecting Strategy for Hydrosilylation of Phosphorus-Containing Olefins. ACS OMEGA 2023; 8:5672-5682. [PMID: 36816693 PMCID: PMC9933236 DOI: 10.1021/acsomega.2c07161] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/12/2022] [Indexed: 06/18/2023]
Abstract
Ir-catalyzed hydrosilylation of the alkenyl phosphine borane complex 1 was achieved to give the corresponding products 2. Because the phosphino group coordinates with metals and is unstable under aerobic conditions, the formation of the corresponding borane adduct was effective not only to promote the target hydrosilylation but also to keep 1 stable under aerobic conditions. The removal of coordinated borane from 2 was readily performed with the treatment by 1,4-diazabicyclo[2.2.2]octane to apply to further transformations. The immobilization and following deprotection of 2 on the surface of mesoporous silica were also examined.
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4
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Huo YP, Liu F, Wu JP, Zhang YK, Feng CM, Peng Y. Platinum Immobilized in Imidazolyl Schiff Base-Containing Nitrogen-Rich Covalent Organic Polymer as a Catalyst for Hydrosilylation. RUSS J GEN CHEM+ 2023. [DOI: 10.1134/s1070363223010176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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5
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Navarro MÁ, Amaro-Gahete J, Ruiz JR, Jiménez-Sanchidrián C, Romero-Salguero FJ, Esquivel D. Copper-complexed dipyridyl-pyridazine functionalized periodic mesoporous organosilica as a heterogeneous catalyst for styrene epoxidation. Dalton Trans 2022; 51:4884-4897. [PMID: 35260869 DOI: 10.1039/d2dt00018k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new heterogeneous catalyst has been synthesized by immobilization of a copper complex on dipyridyl-pyridazine functionalized periodic mesoporous organosilica (dppz-vPMO). This ordered support was first prepared by a co-condensation reaction between vinyltriethoxysilane and 1,2-bis(trimethoxysilyl)ethane and further post-functionalized through a hetero Diels-Alder reaction with 3,6-di-2-pyridyl-1,2,4,5-tetrazine. Techniques such as XRD, N2 isotherms, TEM, 13C NMR, XPS and DRIFT, among others, were employed to characterize the surface functionalized materials. These results have proven the ordered mesostructure of the materials as well as the presence of novel nitrogen-chelating heterocyclic compounds on the pore surface after the post-modification process. Additionally, the successful anchoring of a copper complex on the dipyridyl-pyridazine (dppz) ligands has been confirmed. The resulting material was evaluated as a heterogeneous catalyst in the epoxidation of styrene using tert-butylhydroperoxide (TBHP) as an oxidant. Under the optimized reaction conditions, Cu@dppz-vPMO showed a high styrene conversion (86.0%) and a remarkable selectivity to styrene oxide (41.9%). Indeed, this catalyst provided excellent catalytic results in terms of stability, reaction rate, conversion and selectivity compared to other bipyridine-like copper catalysts.
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Affiliation(s)
- M Ángeles Navarro
- Departamento de Química Orgánica, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Juan Amaro-Gahete
- Departamento de Química Orgánica, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - José R Ruiz
- Departamento de Química Orgánica, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - César Jiménez-Sanchidrián
- Departamento de Química Orgánica, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Francisco J Romero-Salguero
- Departamento de Química Orgánica, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
| | - Dolores Esquivel
- Departamento de Química Orgánica, Instituto Universitario de Nanoquímica (IUNAN), Facultad de Ciencias, Universidad de Córdoba, 14071 Córdoba, Spain.
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6
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Ondar EE, Burykina JV, Ananikov VP. Evidence for the “cocktail” nature of platinum-catalyzed alkyne and alkene hydrosilylation reactions. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02006d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Evidence of the involvement of a “cocktail”-type catalytic system in the alkyne and alkene hydrosilylation reaction in the presence of platinum on a carbon support is reported.
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Affiliation(s)
- Evgeniia E. Ondar
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
| | - Julia V. Burykina
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
| | - Valentine P. Ananikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
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7
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Liang Y. Recent advanced development of metal-loaded mesoporous organosilicas as catalytic nanoreactors. NANOSCALE ADVANCES 2021; 3:6827-6868. [PMID: 36132354 PMCID: PMC9417426 DOI: 10.1039/d1na00488c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/18/2021] [Indexed: 05/10/2023]
Abstract
Ordered periodic mesoporous organosilicas have been widely applied in adsorption/separation/sensor technologies and the fields of biomedicine/biotechnology as well as catalysis. Crucially, surface modification with functional groups and metal complexes or nanoparticle loading has ensured high efficacy and efficiency. This review will highlight the current state of design and catalytic application of transition metal-loaded mesoporous organosilica nanoreactors. It will outline prominent synthesis approaches for the grafting of metal complexes, metal salt adsorption and in situ preparation of metal nanoparticles, and summarize the catalytic performance of the resulting mesoporous organosilica hybrid materials. Finally, the potential prospects and challenges of metal-loaded mesoporous organosilica nanoreactors are addressed.
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Affiliation(s)
- Yucang Liang
- Anorganische Chemie, Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 Tübingen 72076 Germany +49 7071 292436
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8
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Huo Y, Hu J, Liu F, Wu J, Zhang Y, Zhang Y, Wang Q. Platinum-Pyridine Schiff base complexes immobilized onto silica gel as efficient and low cost catalyst for hydrosilylation. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1871733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Jiwen Hu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, P. R. China
| | - Feng Liu
- Shunde Polytechnic, Guangdong, China
| | - Jiapei Wu
- Shunde Polytechnic, Guangdong, China
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9
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Bartlewicz O, Pietrowski M, Kaczmarek M, Maciejewski H. SILP materials based on TiO 2-SiO 2 and TiO 2-SiO 2/lignin supports as new catalytic materials for hydrosilylation reaction - synthesis, physicochemical characterization and catalysis. RSC Adv 2021; 11:23355-23364. [PMID: 35479795 PMCID: PMC9036572 DOI: 10.1039/d1ra03966k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 06/25/2021] [Indexed: 12/04/2022] Open
Abstract
The oxide system TiO2-SiO2 as well as a TiO2-SiO2/lignin system have been obtained by the sol-gel synthesis method and applied as supports in Supported Ionic Liquid Phase (SILP) materials. In total 24 SILP systems were obtained with ionic liquids containing imidazolium, pyridinium, phosphonium or sulfonic cations and bis(trifluoromethylsulfonyl)imide or methylsulfate anions, and homogeneous complexes of rhodium or platinum as the active phase. The supports and catalytic materials were subjected to thorough characterization by elemental analysis, XRD, SEM-EDX, IR, and TGA, and their particle size distribution and porous properties were assessed. The new SILP materials were used in hydrosilylation of 1-octene with 1,1,1,3,5,5,5-heptamethyltrisiloxane. The effectiveness of hydrosilylation reaction catalyzed by the obtained SILP materials for the polar and nonpolar reagents was assessed. All the catalytically active materials were proved to be easy to isolate and reuse, and the best SILP systems have been shown to be active in 10 or more subsequent catalytic cycles.
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Affiliation(s)
- Olga Bartlewicz
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 Poznań 61-614 Poland
- Adam Mickiewicz University Foundation, Poznań Science and Technology Park Rubież 46 Poznań 61-612 Poland
| | - Mariusz Pietrowski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 Poznań 61-614 Poland
| | - Marta Kaczmarek
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 Poznań 61-614 Poland
| | - Hieronim Maciejewski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań Uniwersytetu Poznańskiego 8 Poznań 61-614 Poland
- Adam Mickiewicz University Foundation, Poznań Science and Technology Park Rubież 46 Poznań 61-612 Poland
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10
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Lin XT, Matsumoto K, Maegawa Y, Takeuchi K, Fukaya N, Sato K, Inagaki S, Choi JC. Immobilized Zn(OAc) 2 on bipyridine-based periodic mesoporous organosilica for N-formylation of amines with CO 2 and hydrosilanes. NEW J CHEM 2021. [DOI: 10.1039/d1nj01204e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Zn(OAc)2 immobilized on bipyridine-based periodic mesoporous organosilica is a good catalyst for N-formylation of amines with CO2 and PhSiH3.
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Affiliation(s)
- Xiao-Tao Lin
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
| | - Kazuhiro Matsumoto
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
| | | | - Katsuhiko Takeuchi
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
| | - Norihisa Fukaya
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
| | - Kazuhiko Sato
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
| | - Shinji Inagaki
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba Central 5
- 1-1-1 Higashi
- Tsukuba
- Japan
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11
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Mollar‐Cuni A, Borja P, Martin S, Guisado‐Barrios G, Mata JA. A Platinum Molecular Complex Immobilised on the Surface of Graphene as Active Catalyst in Alkyne Hydrosilylation. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andres Mollar‐Cuni
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Pilar Borja
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Santiago Martin
- Departamento de Química Física (Facultad de Ciencias) Instituto de Ciencias de Materiales de Aragón (ICMA) Universidad de Zaragoza‐CSIC C/Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Gregorio Guisado‐Barrios
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Jose A. Mata
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
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12
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Platinum‐Imidazolyl Schiff Base Complexes Immobilized in Periodic Mesoporous Organosilica Frameworks as Catalysts for Hydrosilylation. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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13
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Fast and stable vapochromic response induced through nanocrystal formation of a luminescent platinum(II) complex on periodic mesoporous organosilica. Sci Rep 2019; 9:15151. [PMID: 31641187 PMCID: PMC6806002 DOI: 10.1038/s41598-019-51615-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/04/2019] [Indexed: 12/21/2022] Open
Abstract
A hybrid vapoluminescent system exhibiting fast and repeatable response was constructed using periodic mesoporous organosilica with bipyridine moieties (BPy-PMO) and a Pt(II) complex bearing a potentially luminescent 2-phenylpyridinato (ppy) ligand. An intense red luminescence appeared when the Pt(II)-complex immobilised BPy-PMO was exposed to methanol vapour and disappeared on exposure to pyridine vapour. The ON-OFF vapochromic behaviour occurred repeatedly in a methanol/pyridine/heating cycle. Interestingly, a rapid response was achieved in the second cycle and cycles thereafter. Scanning and transmission electron microscopies (SEM/TEM), absorption and emission, and nuclear magnetic resonance spectroscopies, mass spectrometry, and powder X-ray diffraction indicated that methanol vapour induced Si-C cleavage and thus liberated [Pt(ppy)(bpy)]Cl (bpy = 2,2′-bipyridine) from the BPy-PMO framework. Furthermore, the self-assembling properties of the Pt(II) complex resulted in the formation of highly luminescent micro/nanocrystals that were homogeneously dispersed on the porous support. The unique vapoluminescence triggered by the unprecedented protodesilylation on exposure to protic solvent vapour at room temperature is attributable to BPy-PMO being a giant ligand and an effective vapour condenser. Consequently, this hybrid system presents a new strategy for developing sensors using bulk powdery materials.
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Rajendran A, Rajendiran M, Yang ZF, Fan HX, Cui TY, Zhang YG, Li WY. Functionalized Silicas for Metal-Free and Metal-Based Catalytic Applications: A Review in Perspective of Green Chemistry. CHEM REC 2019; 20:513-540. [PMID: 31631504 DOI: 10.1002/tcr.201900056] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/23/2019] [Indexed: 12/20/2022]
Abstract
Heterogeneous catalysis plays a key role in promoting green chemistry through many routes. The functionalizable reactive silanols highlight silica as a beguiling support for the preparation of heterogeneous catalysts. Metal active sites anchored on functionalized silica (FS) usually demonstrate the better dispersion and stability due to their firm chemical interaction with FSs. Having certain functional groups in structure, FSs can act as the useful catalysts for few organic reactions even without the need of metal active sites which are termed as the covetous reusable organocatalysts. Magnetic FSs have laid the platform where the effortless recovery of catalysts is realized just using an external magnet, resulting in the simplified reaction procedure. Using FSs of multiple functional groups, we can envisage the shortened reaction pathway and, reduced chemical uses and chemical wastes. Unstable bio-molecules like enzymes have been stabilized when they get chemically anchored on FSs. The resultant solid bio-catalysts exhibited very good reusability in many catalytic reactions. Getting provoked from the green chemistry aspects and benefits of FS-based catalysts, we confer the recent literature and progress focusing on the significance of FSs in heterogeneous catalysis. This review covers the preparative methods, types and catalytic applications of FSs. A special emphasis is given to the metal-free FS catalysts, multiple FS-based catalysts and magnetic FSs. Through this review, we presume that the contribution of FSs to green chemistry can be well understood. The future perspective of FSs and the improvements still required for implementing FS-based catalysts in practical applications have been narrated at the end of this review.
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Affiliation(s)
- Antony Rajendran
- Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P.R. China
| | - Marimuthu Rajendiran
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
| | - Zhi-Fen Yang
- Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P.R. China
| | - Hong-Xia Fan
- Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P.R. China
| | - Tian-You Cui
- Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P.R. China
| | - Ya-Gang Zhang
- Department of Chemistry and Chemical Engineering, Xi'an University of Technology, Xi'an, 710054, PR China
| | - Wen-Ying Li
- Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P.R. China.,Department of Chemistry and Chemical Engineering, Xi'an University of Technology, Xi'an, 710054, PR China
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15
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Inomata K, Naganawa Y, Guo H, Sato K, Nakajima Y. Ruthenium-catalyzed selective hydrosilylation reaction of allyl-functionalized PEG derivatives. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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