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Mohammadpour P, Safaei E, Mazarei E, Zeinalipour-Yazdi CD. TEMPO and a co-reductant mediated aerobic epoxidation of olefins using a new magnetically recoverable iron(III) bis(phenol)diamine complex: experimental and computational studies. Phys Chem Chem Phys 2023; 25:26588-26603. [PMID: 37753780 DOI: 10.1039/d3cp02254d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
A magnetically recoverable catalyst of an iron(III) bis(phenol) diamine complex immobilized onto amine functionalized silica-coated magnetic nanoparticles has been synthesized. The catalyst was characterized using FESEM, TEM and XRD which confirmed the nano structure of the catalyst. The physicochemical techniques of ICP, FT-IR, XPS, EDS and TGA proved the loading of the ligand and metal complex on silica-coated magnetic nanoparticles. Using the prepared heterogeneous catalyst, aerobic epoxidation reactions of different alkenes have been investigated in the presence of SO32- as a reducing agent. Moreover, using TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) to discover the mechanism of the aerobic epoxidation of olefins, a new TEMPO-assisted route has been explored. Both of the reaction pathways led to a moderate to high percentage yield of epoxides in water at room temperature. For further understanding mechanistic aspects, density functional theory (DFT) computational studies have been performed. The DFT calculations confirm the suggested mechanism for the title reaction and show the electron density in the vicinity of Fe(II) in the presence of TEMPO as a co-catalyst was more than that in the presence of SO32-.
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Affiliation(s)
- Pegah Mohammadpour
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran.
| | - Elham Safaei
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, 7194684795, Iran.
| | - Elham Mazarei
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
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Ruan J, Wang D, Kramer MJ, Zavalij PY, Vedernikov AN. Oxidation of Methylplatinum(II) Complexes K[(L)Pt IIMe] with O 2 and C(sp 3)-X (X = O and C) Reductive Elimination Reactivity of Methylplatinum(IV) Products ( L)Pt IVMe(OH): The Effect of Structure of Sulfonated CNN-Pincer Ligands L. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiaheng Ruan
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Daoyong Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Morgan J. Kramer
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Andrei N. Vedernikov
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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Li S, Mao W, Zhang L, Huang H, Xiao Y, Mao L, Tan R, Fu Z, Yu N, Yin D. Ionic liquid-modulated aerobic oxidation of isoeugenol and β-caryophyllene via nanoscale Cu-MOFs under mild conditions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Liu M, Zhang G. Amorphous Goethite as a Catalyst of Chemoselectivity Epoxidation of Alkenes by Hydrogen Peroxide. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222080230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Singh P, Denler MC, Mayfield JR, Jackson TA. Differences in chemoselectivity in olefin oxidation by a series of non-porphyrin manganese(IV)-oxo complexes. Dalton Trans 2022; 51:5938-5949. [PMID: 35348163 DOI: 10.1039/d2dt00876a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
High valent metal-oxo intermediates are versatile oxidants known to facilitate both oxygen atom transfer (OAT) and hydrogen atom transfer (HAT) reactions in nature. In addition to performing essential yet challenging biological reactions, these intermediates are known for their selectivity in favoring the formation of one oxidation product. To understand the basis for this selectivity, we explore the role of equatorial ligand field perturbations in MnIV-oxo complexes on chemoselectivity in cyclohexene oxidation. We also examine reactions of MnIV-oxo complexes with cyclohexene-d10, cyclooctene, and styrene. Within this series, the product distribution in olefin oxidation is highly dependent on the coordination environment of the MnIV-oxo unit. While MnIV-oxo complexes with sterically encumbered, and slightly tilted, MnO units favor CC epoxidation products in cyclohexene oxidation, a less encumbered analogue prefers to cleave allylic C-H bonds, resulting in cyclohexenol and cyclohexenone formation. These conclusions are drawn from GC-MS product analysis of the reaction mixture, changes in the UV-vis absorption spectra, and kinetic analyses. DFT computations establish a trend in thermodynamic properties of the MnIV-oxo complexes and their reactivity towards olefin oxidation on the basis of the MnO bond dissociation free energy (BDFE). The most reactive MnIV-oxo adduct from this series oxidizes cyclohexene-d10, cyclooctene, and styrene to give corresponding epoxides as the only detected products. Collectively, these results suggest that the chemoselectivity obtained in oxidation of olefins is controlled by both the coordination environment around the MnO unit, which modulates the MnO BDFE, and the BDFEs of the allylic C-H bond of the olefins.
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Affiliation(s)
- Priya Singh
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Melissa C Denler
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Jaycee R Mayfield
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
| | - Timothy A Jackson
- The University of Kansas, Department of Chemistry and Center for Environmentally Beneficial Catalysis, 1567 Irving Hill Road, Lawrence, KS 66045, USA.
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Liu X, Yang S, Li Y, Wang B, Guo J, Ma X. Mesoporous Nanostructures Encapsulated with Metallic Nanodots for Smart SERS Sensing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:186-195. [PMID: 33351580 DOI: 10.1021/acsami.0c17316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In virtue of uniform mesopores and core-shell nanoarchitectures, metallic nanodot-encapsulated hollow mesoporous nanostructures have shown promising potential in various applications. However, their fabrication with versatile tunability of the encapsulated metallic content has been a challenge. Herein, we have prepared metallic nanodot-encapsulated hollow mesoporous silica nanoparticles (M-HMSNPs) with adjustable inner metallic components. The sacrificial template of polystyrene (PS) nanoparticles precoated with metals (Au/Ag/Pt) is fully wrapped with mesoporous silica (mSiO2). The metallic nanodots are formed during the template removal process by calcination. The type and content of the encapsulated nanodots can be readily and precisely controlled by the initially deposited metallic layers. We demonstrate the application of the gold (Au) nanodot-loaded HMSNPs (denoted Au-HMSNPs) as smart surface-enhanced Raman spectroscopy (SERS) probes, which can screen between big molecules and small analytes. With the aid of a Raman reporter, the SERS probe can successfully quantify H2O2, which is used to distinguish cancer cells in vitro. Further integrated with enzymes, the SERS chips of specificity are prepared and used to detect corresponding substrates of glucose and uric acid, responsively. Besides SERS sensing, the current strategy can inspire future development of many other M-HMSNPs for various applications such as catalysis, energy storage, theranostics, etc.
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Affiliation(s)
- Xiaojia Liu
- Flexible Printed Electronic Technology Center and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- Shenzhen Bay Laboratory, No. 9 Duxue Road, Shenzhen 518055, China
| | - Shikun Yang
- Flexible Printed Electronic Technology Center and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- Shenzhen Bay Laboratory, No. 9 Duxue Road, Shenzhen 518055, China
| | - Yang Li
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Bo Wang
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Jinhong Guo
- School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xing Ma
- Flexible Printed Electronic Technology Center and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
- Shenzhen Bay Laboratory, No. 9 Duxue Road, Shenzhen 518055, China
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Vega-Vásquez P, Mosier NS, Irudayaraj J. Nanoscale Drug Delivery Systems: From Medicine to Agriculture. Front Bioeng Biotechnol 2020; 8:79. [PMID: 32133353 PMCID: PMC7041307 DOI: 10.3389/fbioe.2020.00079] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 01/29/2020] [Indexed: 12/29/2022] Open
Abstract
The main challenges in drug delivery systems are to protect, transport and release biologically active compounds at the right time in a safe and reproducible manner, usually at a specific target site. In the past, drug nano-carriers have contributed to the development of precision medicine and to a lesser extent have focused on its inroads in agriculture. The concept of engineered nano-carriers may be a promising route to address confounding challenges in agriculture that could perhaps lead to an increase in crop production while reducing the environmental impact associated with crop protection and food production. The main objective of this review is to contrast the advantages and disadvantages of different types of nanoparticles and nano-carriers currently used in the biomedical field along with their fabrication methods to discuss the potential use of these technologies at a larger scale in agriculture. Here we explain what is the problem that nano-delivery systems intent to solve as a technological platform and describe the benefits this technology has brought to medicine. Also here we highlight the potential drawbacks that this technology may face during its translation to agricultural applications, based on the lessons learned so far from its use for biomedical purposes. We discuss not only the characteristics of an ideal nano-delivery system, but also the potential constraints regarding the fabrication including technical, environmental, and legal aspects. A key motivation is to evaluate the potential use of these systems in agriculture, especially in the area of plant breeding, growth promotion, disease control, and post-harvest quality control. Further, we highlight the importance of a rational design of nano-carriers and identify current research gaps to enable scale-up relevant to applications in the treatment of plant diseases, controlled release of fertilizers, and plant breeding.
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Affiliation(s)
- Pablo Vega-Vásquez
- Laboratory of Renewable Resources Engineering, Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, United States
| | - Nathan S. Mosier
- Laboratory of Renewable Resources Engineering, Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, United States
| | - Joseph Irudayaraj
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, IL, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Champaign, IL, United States
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Huang J, Liu S, Ma Y, Cai J. Chiral salen Mn (III) immobilized on ZnPS-PVPA through alkoxyl-triazole for superior performance catalyst in asymmetric epoxidation of unfunctionalized olefins. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Shen Y, Jiang P, Wang L, Bian G, Wai PT, Zhang P, Dong Y. A General and Simple Method of Preparing Molybdenum- Incorporated Silica Nanoparticles as Potential Catalysts for Epoxidation of Alkenes. ChemistrySelect 2018. [DOI: 10.1002/slct.201801955] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yirui Shen
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
| | - Pingping Jiang
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
| | - Ling Wang
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
| | - Gang Bian
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
| | - Phyu Thin Wai
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
| | - Pingbo Zhang
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
| | - Yuming Dong
- School of Chemical and Material Engineering; Key Laboratory of Synthetic and Biological Colloids (Jiangnan University); Ministry of Education; Wuxi 214122, PR China
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Yang J, Wang WD, Dong Z. PdCo nanoparticles supported on carbon fibers derived from cotton: Maximum utilization of Pd atoms for efficient reduction of nitroarenes. J Colloid Interface Sci 2018; 524:84-92. [DOI: 10.1016/j.jcis.2018.04.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 04/01/2018] [Accepted: 04/02/2018] [Indexed: 11/26/2022]
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Shabir J, Garkoti C, Surabhi, Sah D, Mozumdar S. Development of Amine Functionalized Wrinkled Silica Nanospheres and Their Application as Efficient and Recyclable Solid Base Catalyst. Catal Letters 2017. [DOI: 10.1007/s10562-017-2235-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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12
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Watts D, Wang D, Zavalij PY, Vedernikov AN. Novel Sulfonated CNN Pincer Ligands for Facile C−H Activation at a Pt(II) Center. Isr J Chem 2017. [DOI: 10.1002/ijch.201700063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- David Watts
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742
| | - Daoyong Wang
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742
| | - Andrei N. Vedernikov
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742
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Cui X, Zheng Y, Tian M, Dong Z. Palladium nanoparticles supported on SiO 2 @Fe 3 O 4 @m-MnO 2 mesoporous microspheres as a highly efficient and recyclable catalyst for hydrodechlorination of 2,4-dichlorophenol and reduction of nitroaromatic compounds and organic dyes. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.02.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Watts D, Wang D, Adelberg M, Zavalij PY, Vedernikov AN. C–H and O2 Activation at a Pt(II) Center Enabled by a Novel Sulfonated CNN Pincer Ligand. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00613] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Watts
- Department of Chemistry and
Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Daoyong Wang
- Department of Chemistry and
Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Mackenzie Adelberg
- Department of Chemistry and
Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Peter Y. Zavalij
- Department of Chemistry and
Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Andrei N. Vedernikov
- Department of Chemistry and
Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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Vessally E, Ghasemisarabbadeih M, Ekhteyari Z, Hosseinzadeh-Khanmiri R, Ghorbani-Kalhor E, Ejlali L. Platinum nanoparticles supported on polymeric ionic liquid functionalized magnetic silica: effective and reusable heterogeneous catalysts for the selective oxidation of alcohols in water. RSC Adv 2016. [DOI: 10.1039/c6ra16851e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this manuscript, we demonstrate that functionalized magnetic silica nanoparticles are efficient and recyclable catalysts for the selective, aerobic oxidation of various primary and secondary alcohols.
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Affiliation(s)
| | | | | | | | | | - Ladan Ejlali
- Department of Chemistry
- Islamic Azad University
- Tabriz
- Iran
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Tian M, Cui X, Liang K, Ma J, Dong Z. Efficient and chemoselective hydrogenation of nitroarenes by γ-Fe2O3 modified hollow mesoporous carbon microspheres. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00246c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel γ-Fe2O3 NP-modified hollow mesoporous carbon microsphere nanocatalyst was prepared and used as a magnetically recyclable catalyst for the catalytic hydrogenation of nitroarenes with high conversion as well as 100% selectivity for aniline.
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Affiliation(s)
- Meng Tian
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- Lanzhou University
- Lanzhou 730000
| | - Xueliang Cui
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- Lanzhou University
- Lanzhou 730000
| | - Kun Liang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- Lanzhou University
- Lanzhou 730000
| | - Jiantai Ma
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- Lanzhou University
- Lanzhou 730000
| | - Zhengping Dong
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Gansu Provincial Engineering Laboratory for Chemical Catalysis
- Lanzhou University
- Lanzhou 730000
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