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Sorokina SA, Kuchkina NV, Mikhalchenko AV, Krasnova IY, Khanin DA, Skupov KM, Shifrina ZB. Ultramicroporous Polyphenylenes via Diels-Alder Polycondensation Approach. Polymers (Basel) 2023; 15:2060. [PMID: 37177207 PMCID: PMC10181309 DOI: 10.3390/polym15092060] [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: 04/11/2023] [Revised: 04/24/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Development of new microporous organic polymers attracts significant attention due to a wide scope of promising applications. In addition, the synthesis of soluble, non-crosslinking polymers of high surface area and uniform microporosity is very challenging, and the methods for soluble microporous polymers formation are rather limited. In this work, we report a new approach to construct porous polyphenylenes which employs the Diels-Alder polycondensation of multifunctional ethynyl-containing monomers of different spatial architecture with bis(cyclopentadienone)s. The resulting polymers were soluble in common organic solvents, and their structure and properties were assessed by NMR, TGA, DSC, and SEC studies. The polymers demonstrated a specific surface area up to 751 m2·g-1 and ultramicroporous (pore size ≤ 0.6 nm) structure. N2 and CO2 adsorption-desorption data revealed that porosity parameters, e.g., specific surface area and pore sizes, can be tuned selectively by varying the type of monomers and reaction conditions.
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Affiliation(s)
- Svetlana A. Sorokina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., 119991 Moscow, Russia; (N.V.K.)
| | | | | | | | | | | | - Zinaida B. Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., 119991 Moscow, Russia; (N.V.K.)
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2
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Cr-Zn/Ni-Containing Nanocomposites as Effective Magnetically Recoverable Catalysts for CO2 Hydrogenation to Methanol: The Role of Metal Doping and Polymer Co-Support. Catalysts 2022. [DOI: 10.3390/catal13010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
CO2 hydrogenation to methanol is an important process that could solve the problem of emitted CO2 that contributes to environmental concern. Here we developed Cr-, Cr-Zn-, and Cr-Ni-containing nanocomposites based on a solid support (SiO2 or Al2O3) with embedded magnetic nanoparticles (NPs) and covered by a cross-linked pyridylphenylene polymer layer. The decomposition of Cr, Zn, and Ni precursors in the presence of supports containing magnetic oxide led to formation of amorphous metal oxides evenly distributed over the support-polymer space, together with the partial diffusion of metal species into magnetic NPs. We demonstrated the catalytic activity of Cr2O3 in the hydrogenation reaction of CO2 to methanol, which was further increased by 50% and 204% by incorporation of Ni and Zn species, respectively. The fine intermixing of metal species ensures an enhanced methanol productivity. Careful adjustment of constituent elements, e.g., catalytic metal, type of support, presence of magnetic NPs, and deposition of hydrophobic polymer layer contributes to the synergetic promotional effect required for activation of CO2 molecules as well. The results of catalytic recycle experiments revealed excellent stability of the catalysts due to protective role of hydrophobic polymer.
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Ni Nanoparticles Stabilized by Hyperbranched Polymer: Does the Architecture of the Polymer Affect the Nanoparticle Characteristics and Their Performance in Catalysis? Int J Mol Sci 2022; 23:ijms232213874. [PMID: 36430353 PMCID: PMC9696000 DOI: 10.3390/ijms232213874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/12/2022] Open
Abstract
Heat-up and hot-injection methods were employed to synthesize Ni nanoparticles (NPs) with narrow size distribution in the presence of hyperbranched pyridylphenylene polymer (PPP) as a stabilizing agent. It was shown that depending on the synthetic method, Ni NPs were formed either in a cross-linked polymer network or stabilized by a soluble hyperbranched polymer. Ni NPs were characterized by a combination of transmission electron microscopy (TEM), scanning TEM, thermogravimetric analysis, powder X-ray diffraction, X-ray photoelectron spectroscopy, energy dispersive X-ray analysis, and magnetic measurements. The architecture of polymer support was found to significantly effect Ni NPs characteristics and behavior. The Ni NPs demonstrated a high catalytic activity in a model Suzuki-Miyaura cross-coupling reaction. No significant drop in activity was observed upon repeated use after magnetic separation in five consecutive catalytic cycles. We believe that hyperbranched PPP can serve as universal platform for the controllable synthesis of Ni NPs, acting as highly active and stable catalysts.
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Markin AV, Smirnova NN, Sologubov SS, Chamkina ES, Kuchkina NV, Shifrina ZB. Thermodynamic Properties of a Hyperbranched Pyridylphenylene Polymer with a Phenylene Bridging Group. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422090230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dendronized Hyperbranched Polymer: A New Architecture for Second-Order Nonlinear Optics. Symmetry (Basel) 2022. [DOI: 10.3390/sym14050882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Organic/polymeric second-order nonlinear optical (NLO) materials, which rely on the poling-induced non-centrosymmetric arrangement of NLO chromophores, have played a very important role in laser technology and optical fiber communication, due to their ultra-fast response speed, excellent machining performance and low dielectric constant. However, the NLO chromophores have the large dipole moments with strong intramolecular charge transfer, which lead to the intermolecular electrostatic interactions to tend to the centrosymmetric arrangement and decrease the poling efficiency. Since the special three-dimensional spatial separation can minimize these strong intermolecular electrostatic interactions during poling process, dendrimers and hyperbranched polymers have been considered as better topology for the next generation of highly efficient NLO materials. In 2013, by the attachment of low generation dendrimers to the hyperbranched backbone, a new dendritic architecture of dendronized hyperbranched polymer (DHP) was proposed for improving the comprehensive performance of NLO materials. Recent results showed many advantages of DHPs in NLO field, such as easy syntheses, large NLO coefficients and high orientation stability, etc. In this review, the latest advancement of DHPs, including the design principle, synthesis, as well as their application as NLO materials is summarized. The new opportunities arising from DHPs are also summarized in the future perspective.
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Ru@hyperbranched Polymer for Hydrogenation of Levulinic Acid to Gamma-Valerolactone: The Role of the Catalyst Support. Int J Mol Sci 2022; 23:ijms23020799. [PMID: 35054984 PMCID: PMC8776037 DOI: 10.3390/ijms23020799] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/23/2021] [Accepted: 01/06/2022] [Indexed: 11/16/2022] Open
Abstract
Hydrogenation of levulinic acid (LA) obtained from cellulose biomass is a promising path for production of γ-valerolactone (GVL)—a component of biofuel. In this work, we developed Ru nanoparticle containing nanocomposites based on hyperbranched pyridylphenylene polymer, serving as multiligand and stabilizing matrix. The functionalization of the nanocomposite with sulfuric acid significantly enhances the activity of the catalyst in the selective hydrogenation of LA to GVL and allows the reaction to proceed under mild reaction conditions (100 °C, 2 MPa of H2) in water and low catalyst loading (0.016 mol.%) with a quantitative yield of GVL and selectivity up to 100%. The catalysts were successfully reused four times without a significant loss of activity. A comprehensive physicochemical characterization of the catalysts allowed us to assess structure-property relationships and to uncover an important role of the polymeric support in the efficient GVL synthesis.
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Zidan TA, Youssef AM, El-Menyawy EM, Kandil HS. A New Star-shaped Amino Functionalized poly(phenylene oxide) for Optoelectronic Applications. POLYMER SCIENCE SERIES B 2021. [DOI: 10.1134/s1560090421060312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Thalji MR, Ibrahim AA, Ali GA. Cutting-edge development in dendritic polymeric materials for biomedical and energy applications. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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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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10
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Smirnova NN, Markin AV, Sologubov SS, Serkova ES, Kuchkina NV, Shifrina ZB. Thermodynamic Properties of a Hyperbranched Pyridine-Containing Polyphenylene in the Range of T → 0 to 650 K. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420010318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Torozova AS, Korolkova AA, Krasnova IY, Shifrina ZB. New pyridylphenylene cyclopentadienon as a building block for dendrimer synthesis. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2727-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Gubarev AS, Lezov AA, Senchukova AS, Vlasov PS, Serkova ES, Kuchkina NV, Shifrina ZB, Tsvetkov NV. Diels–Alder Hyperbranched Pyridylphenylene Polymer Fractions as Alternatives to Dendrimers. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02388] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | - Elena S. Serkova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str. 28, Moscow 119991, Russia
| | - Nina V. Kuchkina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str. 28, Moscow 119991, Russia
| | - Zinaida B. Shifrina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str. 28, Moscow 119991, Russia
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13
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Catalysts based on hyperbranched pyridylphenylene polymers and palladium nanoparticles for the Suzuki—Miyaura cross-coupling reaction. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2176-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Shifrina ZB, Bronstein LM. Magnetically Recoverable Catalysts: Beyond Magnetic Separation. Front Chem 2018; 6:298. [PMID: 30073164 PMCID: PMC6058181 DOI: 10.3389/fchem.2018.00298] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 06/29/2018] [Indexed: 11/13/2022] Open
Abstract
Here, we discuss several important aspects of magnetically recoverable catalysts which can be realized when magnetic oxide nanoparticles are exposed to catalytic species and catalytic reaction media. In such conditions magnetic oxides can enhance performance of catalytic nanoparticles due to (i) electronic effects, (ii) catalyzing reactions which are beneficial for the final reaction outcome, or (iii) providing a capacity to dilute catalytic metal oxide species, leading to an increase of oxygen vacancies. However, this approach should be used when the magnetic oxides are stable in reaction conditions and do not promote side reactions. Incorporation of another active component, i.e., a graphene derivative, in the magnetically recoverable catalyst constitutes a smart design of a catalytic system due to synergy of its components, further enhancing catalytic properties.
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Affiliation(s)
- Zinaida B Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
| | - Lyudmila M Bronstein
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia.,Department of Chemistry, Indiana University, Bloomington, IN, United States.,Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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15
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Hou ICY, Hu Y, Narita A, Müllen K. Diels–Alder polymerization: a versatile synthetic method toward functional polyphenylenes, ladder polymers and graphene nanoribbons. Polym J 2017. [DOI: 10.1038/pj.2017.69] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Alibegovic K, Morgan DG, Losovyj Y, Pink M, Stein BD, Kuchkina NV, Serkova ES, Salnikova KE, Shifrina ZB, Matveeva VG, Sulman EM, Bronstein LM. Efficient Furfuryl Alcohol Synthesis from Furfural over Magnetically Recoverable Catalysts: Does the Catalyst Stabilizing Medium Matter? ChemistrySelect 2017. [DOI: 10.1002/slct.201701100] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kenan Alibegovic
- Department of Chemistry; Indiana University; Bloomington, IN 47405 USA
| | - David Gene Morgan
- Department of Chemistry; Indiana University; Bloomington, IN 47405 USA
| | - Yaroslav Losovyj
- Department of Chemistry; Indiana University; Bloomington, IN 47405 USA
| | - Maren Pink
- Department of Chemistry; Indiana University; Bloomington, IN 47405 USA
| | - Barry D. Stein
- Department of Biology; Indiana University; Bloomington, IN 47405 USA
| | - Nina V. Kuchkina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
| | - Elena S. Serkova
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
| | - Kseniya E. Salnikova
- Department of Biotechnology and Chemistry; Tver State Technical University; 22 A. Nikitina St. Tver 170026 Russia
| | - Zinaida B. Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
| | - Valentina G. Matveeva
- Department of Biotechnology and Chemistry; Tver State Technical University; 22 A. Nikitina St. Tver 170026 Russia
- Tver State University; Regional Technological Center; 33 Zhelyabova St. Tver 170100 Russia
| | - Esther M. Sulman
- Department of Biotechnology and Chemistry; Tver State Technical University; 22 A. Nikitina St. Tver 170026 Russia
| | - Lyudmila M. Bronstein
- Department of Chemistry; Indiana University; Bloomington, IN 47405 USA
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilov St. Moscow 119991 Russia
- Department of Physics, Faculty of Science; King Abdulaziz University; Jeddah Saudi Arabia
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17
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Baird N, Dittmar JW, Losovyj YB, Morgan DG, Stein BD, Pink M, Kuchkina NV, Serkova ES, Lependina OL, Grigoriev ME, Sidorov AI, Sulman MG, Shifrina ZB, Bronstein LM. Enhancing the Catalytic Activity of Zn-Containing Magnetic Oxides in a Methanol Synthesis: Identifying the Key Factors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2285-2294. [PMID: 28029247 DOI: 10.1021/acsami.6b12115] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A new family of Ni-, Co-, and Cr-doped Zn-containing magnetic oxide nanoparticles (NPs) stabilized by polyphenylquinoxaline (PPQ) and hyperbranched pyridylphenylene polymer (PPP) has been developed. These NPs have been synthesized by thermal decomposition of Zn and doping metal acetylacetonates in the reaction solution of preformed magnetite NPs, resulting in single-crystal NPs with spinel structure. For the PPQ-capped NPs, it was demonstrated that all three types of metal species (Fe, Zn, and a doping metal) reside within the same NPs, the surface of which is enriched with Zn and a doping metal, while the deeper layers are enriched with Fe. The Cr-doped NPs at the high Cr loading are an exception due to favored deposition of Cr on magnetite located in the NP depth. The PPP-capped NPs exhibit similar morphology and crystallinity; however, the detailed study of the NP composition was barred due to the high PPP amount retained on the NP surface. The catalyst testing in syngas conversion to methanol demonstrated outstanding catalytic properties of doped Zn-containing magnetic oxides, whose activities are dependent on the doping metal content and on the stabilizing polymer. The PPP stabilization allows for better access to the catalytic species due to the open and rigid polymer architecture and most likely optimized distribution of doping species. Repeat experiments carried out after magnetic separation of catalysts from the reaction mixture showed excellent catalyst stability even after five consecutive catalytic runs.
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Affiliation(s)
- Nicholas Baird
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Jasper W Dittmar
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Yaroslav B Losovyj
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - David Gene Morgan
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Barry D Stein
- Department of Biology, Indiana University , Bloomington, Indiana 47405, United States
| | - Maren Pink
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - Nina V Kuchkina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Elena S Serkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Olga L Lependina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Maxim E Grigoriev
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Alexander I Sidorov
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Mikhail G Sulman
- Department of Biotechnology and Chemistry, Tver State Technical University , 22 A. Nikitina Street, Tver 170026, Russia
| | - Zinaida B Shifrina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
| | - Lyudmila M Bronstein
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , 28 Vavilov Street, Moscow 119991 Russia
- Faculty of Science, Department of Physics, King Abdulaziz University , Jeddah, Saudi Arabia
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18
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Tsvetkov NV, Gubarev AS, Lebedeva EV, Lezov AA, Mikhailova ME, Kolomiets IP, Mikusheva NG, Akhmadeeva LI, Kuchkina NV, Serkova ES, Shifrina ZB. Conformational and hydrodynamic parameters of hyperbranched pyridylphenylene polymers. POLYM INT 2016. [DOI: 10.1002/pi.5298] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Nikolay V Tsvetkov
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Alexander S Gubarev
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Elena V Lebedeva
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Alexey A Lezov
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Mariya E Mikhailova
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Igor P Kolomiets
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Nina G Mikusheva
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Lilija I Akhmadeeva
- Department of Physics; St Petersburg State University; Universitetskaya nab. 7-9 St Petersburg 199034 Russia
| | - Nina V Kuchkina
- Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilova str. 28 Moscow 119991 Russia
| | - Elena S Serkova
- Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilova str. 28 Moscow 119991 Russia
| | - Zinaida B Shifrina
- Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilova str. 28 Moscow 119991 Russia
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