1
|
Kamboj N, Dey A, Lama P, Majumder M, Sengupta S, Metre RK. A closed-shell phenalenyl-based dinuclear iron(III) complex as a robust cathode for a one-compartment H 2O 2 fuel cell. Dalton Trans 2023; 52:17163-17175. [PMID: 37877475 DOI: 10.1039/d3dt02975a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Closed-shell phenalenyl (PLY) systems are increasingly becoming more attractive as building blocks for developing promising catalysts and electroactive cathode materials, as they have tremendous potential to accept electrons and participate in redox reactions. Herein, we report a PLY-based dinuclear [FeIII2(hmbh-PLY)3] complex, 1, and its utility as a cathode material in a H2O2 fuel cell. Complex 1 was synthesized from a new Schiff base ligand, (E)-9-(2-(2-hydroxy-3-methoxybenzylidene)hydrazineyl)-1H-phenalen-1-one, hmbh-PLYH2, designed using a PLY precursor, Hz-PLY. The newly derived ligand and complex 1 were characterized by various analytical techniques, including single-crystal X-ray diffraction (SCXRD). The cyclic voltammetry (CV) study revealed that complex 1 undergoes five electron reductions under an applied electric potential. When the electroactive complex 1 was employed as a cathode in a membrane-less one-compartment H2O2 fuel cell, with Ni foam as the corresponding anode, the designed fuel cell exhibited an exceptionally high peak power density (PPD) of 2.41 mW cm-2, in comparison with those of all the previously reported Fe-based molecular complexes. DFT studies were performed to gain reasonable insights into the two-electron catalytic reduction (pathway I) of H2O2 by the Fe-center of complex 1 and to explore the geometries, energetics of the electrocatalyst, reactive intermediates and transition states.
Collapse
Affiliation(s)
- Nisha Kamboj
- Department of Chemistry, Indian Institute of Technology Jodhpur, Rajasthan 342030, India.
| | - Ayan Dey
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Jodhpur, Rajasthan 342030, India.
| | - Prem Lama
- CSIR-Indian Institute of Petroleum, Haridwar Road, Mokhampur, Dehradun 248005, India
| | - Moumita Majumder
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Jodhpur, Rajasthan 342030, India.
| | - Srijan Sengupta
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Jodhpur, Rajasthan 342030, India.
| | - Ramesh K Metre
- Department of Chemistry, Indian Institute of Technology Jodhpur, Rajasthan 342030, India.
| |
Collapse
|
2
|
Michelas M, Redjel YK, Daran JC, Benslimane M, Poli R, Fliedel C. Cobalt(II) and cobalt(III) complexes of tripodal tetradentate diamino-bis(phenolate) ligands: Synthesis, characterization, crystal structures and evaluation in radical polymerization processes. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
3
|
Cobalt -mediated radical polymerization of vinyl acetate in a packed column system: simultaneous effective control of molecular weight, separation, and purification. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03365-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
4
|
Kamboj N, Mali G, Lama P, Erande RD, Metre RK. Designing a Redox Noninnocent Phenalenyl-Based Copper(II) Complex: An Autotandem Catalyst for the Selective Oxidation of Polycyclic Aromatic Hydrocarbons (PAHs). ACS OMEGA 2022; 7:8789-8797. [PMID: 35309439 PMCID: PMC8928492 DOI: 10.1021/acsomega.1c07051] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/18/2022] [Indexed: 05/25/2023]
Abstract
A square-planar [CuIIL] complex 1, based on the redox-active phenalenyl unit LH2 = 9,9'-(ethane-1,2-diylbis(azanediyl))bis(1H-phenalen-1-one), is prepared and structurally characterized by single-crystal X-ray diffraction analysis. Complex 1 crystallizes at room temperature with the P1 space group. The molecular structure of 1 reveals the presence of intriguing C-H···Cu intermolecular anagostic interactions of the order ∼2.7715 Å. Utilizing the presence of anagostic interactions and the free nonbonding molecular orbitals (NBMOs) of the closed-shell phenalenyl unit in 1, the oxidation reactions of some industrially important polycyclic aromatic hydrocarbons (PAHs) in the presence of the [CuIIL] complex under very mild conditions have been reported. The direct conversion of anthracene-9-carbaldehyde to 9,10-anthraquinone in one step concludes that the catalyst shows dual activity in the chemical transformations. This also includes the first report of a "single-step" catalytic transformation of pyrene-1-carbaldehyde to the synthetically difficult pyren-4-ol, a precursor for the synthesis of several novel fluorescent probes for cell imaging.
Collapse
Affiliation(s)
- Nisha Kamboj
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Ghanshyam Mali
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Prem Lama
- CSIR-Indian
Institute of Petroleum, Haridwar Road, Mokhampur, Dehradun 248005, India
| | - Rohan D. Erande
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Ramesh K. Metre
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, Rajasthan, India
| |
Collapse
|
5
|
Zhou D, Zhu LW, Wu BH, Xu ZK, Wan LS. End-functionalized polymers by controlled/living radical polymerizations: synthesis and applications. Polym Chem 2022. [DOI: 10.1039/d1py01252e] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This review focuses on end-functionalized polymers synthesized by controlled/living radical polymerizations and the applications in fields including bioconjugate formation, surface modification, topology construction, and self-assembly.
Collapse
Affiliation(s)
- Di Zhou
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Liang-Wei Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Bai-Heng Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhi-Kang Xu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ling-Shu Wan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
6
|
|
7
|
Butsch K, Haseloer A, Schmitz S, Ott I, Schur J, Klein A. Fe III, Cu II and Zn II Complexes of the Rigid 9-Oxido-phenalenone Ligand-Spectroscopy, Electrochemistry, and Cytotoxic Properties. Int J Mol Sci 2021; 22:3976. [PMID: 33921452 PMCID: PMC8070161 DOI: 10.3390/ijms22083976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/07/2021] [Accepted: 04/07/2021] [Indexed: 01/10/2023] Open
Abstract
The three complexes [Fe(opo)3], [Cu(opo)2], and [Zn(opo)2] containing the non-innocent anionic ligand opo- (opo- = 9-oxido-phenalenone, Hopo = 9-hydroxyphenalonone) were synthesised from the corresponding acetylacetonates. [Zn(opo)2] was characterised using 1H nuclear magnetic resonance (NMR) spectroscopy, the paramagnetic [Fe(opo)3] and [Cu(opo)2] by electron paramagnetic resonance (EPR) spectroscopy. While the EPR spectra of [Cu(opo)2] and [Cu(acac)2] in dimethylformamide (DMF) solution are very similar, a rather narrow spectrum was observed for [Fe(opo)3] in tetrahydrofuran (THF) solution in contrast to the very broad spectrum of [Fe(acac)3] in THF (Hacac = acetylacetone, 2,4-pentanedione; acac- = acetylacetonate). The narrow, completely isotropic signal of [Fe(opo)3] disagrees with a metal-centred S = 5/2 spin system that is observed in the solid state. We assume spin-delocalisation to the opo ligand in the sense of an opo- to FeIII electron transfer. All compounds show several electrochemical opo-centred reduction waves in the range of -1 to -3 V vs. the ferrocene/ferrocenium couple. However, for CuII and FeIII the very first one-electron reductions are metal-centred. Electronic absorption in the UV to vis range are due to π-π* transitions in the opo core, giving Hopo and [Zn(opo)2] a yellow to orange colour. The structured bands ranging from 400 to 500 for all compounds are assigned to the lowest energy π-π* transitions. They show markedly higher intensities and slight shifts for the CuII (brown) and FeIII (red) complexes and we assume admixing metal contributions (MLCT for CuII, LMCT for FeIII). For both complexes long-wavelength absorptions assignable to d-d transitions were detected. Detailed spectroelectrochemical experiments confirm both the electrochemical and the optical assignments. Hopo and the complexes [Cu(opo)2], [Zn(opo)2], and [Fe(opo)3] show antiproliferative activities against HT-29 (colon cancer) and MCF-7 (breast cancer) cell lines in the range of a few µM, comparable to cisplatin under the same conditions.
Collapse
Affiliation(s)
- Katharina Butsch
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany; (K.B.); (A.H.); (S.S.)
| | - Alexander Haseloer
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany; (K.B.); (A.H.); (S.S.)
| | - Simon Schmitz
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany; (K.B.); (A.H.); (S.S.)
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, D-38106 Braunschweig, Germany; (I.O.); (J.S.)
| | - Julia Schur
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, D-38106 Braunschweig, Germany; (I.O.); (J.S.)
| | - Axel Klein
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany; (K.B.); (A.H.); (S.S.)
| |
Collapse
|
8
|
Thevenin L, Daran JC, Poli R, Fliedel C. Cobalt complexes of an OSNSO-tetrapodal pentadentate ligand: Synthesis, structures and reactivity. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
Chen X, Wang L, Li Q, Zhang J, Wang J, Sun J, Zhang Y. Reversible-deactivation radical polymerizations of acrylamide mediated by cobalt complexes supported by amino-bis(phenolate) ligands. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2020. [DOI: 10.1080/10601325.2019.1691453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Xiaomei Chen
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| | - Liying Wang
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| | - Qingpan Li
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| | - Jianing Zhang
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| | - Jin Wang
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| | - Junmin Sun
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| | - Yongfeng Zhang
- School of Chemical Engineering, Inner Mongolia University of Technology; Institute of Coal Conversion and Cyclic Economy, Huhhot, People’s Republic of China
| |
Collapse
|
10
|
Chen Y, Chen S, Li J, Wu Z, Lee G, Liu Y, Cheng W, Yeh C, Peng C. Cobalt(II) phenoxy‐imine complexes in radical polymerization of vinyl acetate: The interplay of catalytic chain transfer and controlled/living radical polymerization. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pola.29460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yi‐Hao Chen
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of MattersNational Tsing Hua University Hsinchu 30013 Taiwan
| | - Shih‐Ji Chen
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of MattersNational Tsing Hua University Hsinchu 30013 Taiwan
| | - Jia‐Qi Li
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of MattersNational Tsing Hua University Hsinchu 30013 Taiwan
| | - Zhenqiang Wu
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Gene‐Hsiang Lee
- Instrumentation CenterNational Taiwan University Taipei 10617 Taiwan
| | - Yi‐Hung Liu
- Instrumentation CenterNational Taiwan University Taipei 10617 Taiwan
| | - Wei‐Ting Cheng
- Department of Chemistry and Research Center for Sustainable Energy and NanotechnologyNational Chung Hsing University Taichung 402 Taiwan
| | - Chen‐Yu Yeh
- Department of Chemistry and Research Center for Sustainable Energy and NanotechnologyNational Chung Hsing University Taichung 402 Taiwan
| | - Chi‐How Peng
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of MattersNational Tsing Hua University Hsinchu 30013 Taiwan
| |
Collapse
|
11
|
Wu Z, Wang Z, Wang BW, Peng CH, Fu X. Visible-Light-Induced Living/Controlled Radical Copolymerization of 1-Octene and Acrylic Monomers Mediated by Organocobalt Complexes. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b02066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhenqiang Wu
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zikuan Wang
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Chi-How Peng
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Xuefeng Fu
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
12
|
Demarteau J, Debuigne A, Detrembleur C. Organocobalt Complexes as Sources of Carbon-Centered Radicals for Organic and Polymer Chemistries. Chem Rev 2019; 119:6906-6955. [DOI: 10.1021/acs.chemrev.8b00715] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jérémy Demarteau
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liège, Allée du 6 Août, Building B6A, Agora Square, 4000 Liège, Belgium
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liège, Allée du 6 Août, Building B6A, Agora Square, 4000 Liège, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liège, Allée du 6 Août, Building B6A, Agora Square, 4000 Liège, Belgium
| |
Collapse
|
13
|
Homolytically weak metal-carbon bonds make robust controlled radical polymerizations systems for “less-activated monomers”. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
14
|
Falireas PG, Ladmiral V, Debuigne A, Detrembleur C, Poli R, Ameduri B. Straightforward Synthesis of Well-Defined Poly(vinylidene fluoride) and Its Block Copolymers by Cobalt-Mediated Radical Polymerization. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02252] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | - Vincent Ladmiral
- ICGM CNRS, Université de Montpellier, ENSCM, Montpellier F-34296, France
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liege, Sart-Tilman B6a, Liege 4000, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liege, Sart-Tilman B6a, Liege 4000, Belgium
| | - Rinaldo Poli
- CNRS, LCC (Laboratoire de Chimie de Coordination) and Université de Toulouse, UPS, INPT, 205 route de Narbonne, BP 44099, Toulouse 31077 Cedex 4, France
- Institut Universitaire de France, 1, rue Descartes, Paris 75231 Cedex 05, France
| | - Bruno Ameduri
- ICGM CNRS, Université de Montpellier, ENSCM, Montpellier F-34296, France
| |
Collapse
|
15
|
Zerk TJ, Gahan LR, Krenske EH, Bernhardt PV. The fate of copper catalysts in atom transfer radical chemistry. Polym Chem 2019. [DOI: 10.1039/c8py01688g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pathway of atom transfer radical polymerisation (ATRP) is influenced by the nature of the alkyl bromide initiator (RBr) to the extent that reactions between the radical R˙ and the original copper(i) catalyst can divert the reaction toward different products.
Collapse
Affiliation(s)
- Timothy J. Zerk
- School of Chemistry and Molecular Biosciences
- University of Queensland
- Brisbane 4072
- Australia
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences
- University of Queensland
- Brisbane 4072
- Australia
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences
- University of Queensland
- Brisbane 4072
- Australia
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences
- University of Queensland
- Brisbane 4072
- Australia
| |
Collapse
|
16
|
Redjel YK, Thevenin L, Daran JC, Benslimane M, Poli R, Fliedel C. Acetylacetonato cobalt(III) and iron(III) complexes of picolylamine- and aminopropylamine-bis(phenolate) ligands: Synthesis, characterization and crystal structures. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.09.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
17
|
Banerjee S, Bellan EV, Gayet F, Debuigne A, Detrembleur C, Poli R, Améduri B, Ladmiral V. Bis(formylphenolato)cobalt(II)-Mediated Alternating Radical Copolymerization of tert-Butyl 2-Trifluoromethylacrylate with Vinyl Acetate. Polymers (Basel) 2017; 9:E702. [PMID: 30966002 PMCID: PMC6418862 DOI: 10.3390/polym9120702] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/03/2017] [Accepted: 12/07/2017] [Indexed: 01/10/2023] Open
Abstract
The organometallic-mediated radical polymerization (OMRP) of vinyl acetate (VAc) and its OMR copolymerization (OMRcoP) with tert-butyl 2-trifluoromethylacrylate (MAF-TBE) mediated by Co(SAL)₂ (SAL = 2-formylphenolato or deprotonated salicylaldehyde) produced relatively well-defined PVAc and poly(VAc-alt-MAF-TBE) copolymers at moderate temperature (<40 °C) in bulk. The resulting alternating copolymer was characterized by ¹H-, 13C- and 19F-nuclear magnetic resonance (NMR) spectroscopies, and by size exclusion chromatography. The linear first-order kinetic plot, the linear evolutions of the molar mass with total monomer conversion, and the relatively low dispersity (Đ~1.55) of the resulting copolymers suggest that this cobalt complex provides some degree of control over the copolymerization of VAc and MAF-TBE. Compared to the previously investigated cobalt complex OMRP mediators having a fully oxygen-based first coordination sphere, this study emphasizes a few peculiarities of Co(SAL)₂: a lower ability to trap radical chains as compared to Co(acac)₂ and the absence of catalytic chain transfer reactions, which dominates polymerizations carried in the presence of 9-oxyphenalenone cobalt derivative.
Collapse
Affiliation(s)
- Sanjib Banerjee
- Institut Charles Gerhardt Montpellier, University of Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095 Montpellier CEDEX 5, France.
| | - Ekaterina V Bellan
- Laboratoire de Chimie de Coordination (LCC), Université de Toulouse, CNRS, UPS, INPT, 205 route de Narbonne, BP 44099, 31077 Toulouse CEDEX 4, France.
| | - Florence Gayet
- Laboratoire de Chimie de Coordination (LCC), Université de Toulouse, CNRS, UPS, INPT, 205 route de Narbonne, BP 44099, 31077 Toulouse CEDEX 4, France.
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM), University of Liege, CESAM Research Unit, Sart-Tilman B6a, 4000 Liege, Belgium.
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM), University of Liege, CESAM Research Unit, Sart-Tilman B6a, 4000 Liege, Belgium.
| | - Rinaldo Poli
- Laboratoire de Chimie de Coordination (LCC), Université de Toulouse, CNRS, UPS, INPT, 205 route de Narbonne, BP 44099, 31077 Toulouse CEDEX 4, France.
- Institut Universitaire de France, 1, rue Descartes, 75231 Paris CEDEX 05, France.
| | - Bruno Améduri
- Institut Charles Gerhardt Montpellier, University of Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095 Montpellier CEDEX 5, France.
| | - Vincent Ladmiral
- Institut Charles Gerhardt Montpellier, University of Montpellier, CNRS, ENSCM, Place Eugène Bataillon, 34095 Montpellier CEDEX 5, France.
| |
Collapse
|