1
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Wolff S, Ponsonby A, Dallmann A, Herwig C, Beckmann F, Cula B, Limberg C. Appropriation of group II metals: synthesis and characterisation of the first alkaline earth metal supported transition metal carbonite complexes. Chem Commun (Camb) 2024; 60:5816-5819. [PMID: 38753303 DOI: 10.1039/d4cc01682c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Nickel carbonite complexes supported by alkaline earth metals have been accessed via salt-metathesis of the corresponding alkali metal precursors. The new complexes undergo Schlenk-like exchange reactions in solution which have been investigated by NMR spectroscopy. Also their reactivity towards epoxides and carbon monoxide was studied.
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Affiliation(s)
- Siad Wolff
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Annabelle Ponsonby
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - André Dallmann
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Christian Herwig
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Fabian Beckmann
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Beatrice Cula
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
| | - Christian Limberg
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany.
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2
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Smith M, McGuire TM, Buchard A, Williams CK. Evaluating Heterodinuclear Mg(II)M(II) (M = Mn, Fe, Ni, Cu, and Zn) Catalysts for the Chemical Recycling of Poly(cyclohexene carbonate). ACS Catal 2023; 13:15770-15778. [PMID: 38125977 PMCID: PMC10728899 DOI: 10.1021/acscatal.3c04208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 12/23/2023]
Abstract
Polymer chemical recycling to monomers (CRM) is important to help achieve a circular plastic economy, but the "rules" governing catalyst design for such processes remain unclear. Here, carbon dioxide-derived polycarbonates undergo CRM to produce epoxides and carbon dioxide. A series of dinuclear catalysts, Mg(II)M(II) where M(II) = Mg, Mn, Fe, Co, Ni, Cu, and Zn, are compared for poly(cyclohexene carbonate) depolymerizations. The recycling is conducted in the solid state, at 140 °C monitored using thermal gravimetric analyses, or performed at larger-scale using laboratory glassware. The most active catalysts are, in order of decreasing rate, Mg(II)Co(II), Mg(II)Ni(II), and Mg(II)Zn(II), with the highest activity reaching 8100 h-1 and with >99% selectivity for cyclohexene oxide. Both the activity and selectivity values are the highest yet reported in this field, and the catalysts operate at low loadings and moderate temperatures (from 1:300 to 1:5000, 140 °C). For the best heterodinuclear catalysts, the depolymerization kinetics and activation barriers are determined. The rates in both reverse depolymerization and forward CHO/CO2 polymerization catalysis show broadly similar trends, but the processes feature different intermediates; forward polymerization depends upon a metal-carbonate intermediate, while reverse depolymerization depends upon a metal-alkoxide intermediate. These dinuclear catalysts are attractive for the chemical recycling of carbon dioxide-derived plastics and should be prioritized for recycling of other oxygenated polymers and copolymers, including polyesters and polyethers. This work provides insights into the factors controlling depolymerization catalysis and steers future recycling catalyst design toward exploitation of lightweight and abundant s-block metals, such as Mg(II).
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Affiliation(s)
- Madeleine
L. Smith
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Rd, Oxford OX1 3TA, U.K.
| | - Thomas M. McGuire
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Rd, Oxford OX1 3TA, U.K.
| | - Antoine Buchard
- Department
of Chemistry, University of Bath, Institute
for Sustainability, Claverton Down, Bath BA2
7AY, U.K.
| | - Charlotte K. Williams
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Rd, Oxford OX1 3TA, U.K.
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3
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Tran D, Braaksma AN, Andras AM, Boopathi SK, Darensbourg DJ, Wooley KL. Structural Metamorphoses of d-Xylose Oxetane- and Carbonyl Sulfide-Based Polymers In Situ during Ring-Opening Copolymerizations. J Am Chem Soc 2023; 145:18560-18567. [PMID: 37578470 PMCID: PMC10863053 DOI: 10.1021/jacs.3c05529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Indexed: 08/15/2023]
Abstract
Polymers constructed from copolymerizations of carbohydrates with C1 feedstocks are promising targets that provide transformation of sustainably sourced building blocks into next-generation, environmentally degradable plastic materials. In this work, the initial intention was to expand beyond polycarbonates prepared by the copolymerization of oxetanes derived from d-xylose with CO2 and incorporate sulfur atoms through the establishment of monothiocarbonates that would provide the ability to modulate the backbone compositions and result in unique effects upon the chemical, physical, and mechanical properties. Therefore, the syntheses of poly(1,2-O-isopropylidene-α-d-xylofuranose monothiocarbonate)s were investigated by ring-opening copolymerizations of 3,5-anhydro-1,2-O-isopropylidene-α-d-xylofuranose with carbonyl sulfide (COS) facilitated by (salen)CrCl/cocatalyst systems. Unexpectedly, when copolymerization temperatures exceeded 40 °C, oxygen/sulfur exchange reactions occurred, causing in situ dynamic backbone restructuring through a series of inter-related and complex mechanistic pathways that transformed monothiocarbonate monomeric repeating units into carbonate and thioether dimeric repeating units. These backbone structural compositional transformations were investigated through a combination of Fourier transform infrared and nuclear magnetic resonance spectroscopic techniques and were demonstrated to be easily tuned via temperature and catalyst/cocatalyst stoichiometries. Furthermore, the regiochemistries of these d-xylose-based sulfur-containing polymers revealed that monothiocarbonate monomeric repeating units had a head-to-tail connectivity, while the carbonate and thioether dimeric repeating units had dual head-to-head and tail-to-tail connectivities. These sulfur-containing polymers exhibited enhanced thermal stabilities compared to their oxygen-containing polycarbonate analogues and revealed variations in the effects upon glass transition temperatures, demonstrating the effect of sulfur incorporation in the polymer backbone. These findings contribute to the advancement of sustainable polymer production by using feedstocks of natural origin coupled with COS.
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Affiliation(s)
- David
K. Tran
- Departments
of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Ashley N. Braaksma
- Departments
of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Autumn M. Andras
- Departments
of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Senthil K. Boopathi
- Departments
of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Donald J. Darensbourg
- Departments
of Chemistry, Texas A&M University, College Station, Texas 77842, United States
| | - Karen L. Wooley
- Departments
of Chemistry, Texas A&M University, College Station, Texas 77842, United States
- Materials
Science & Engineering, Texas A&M
University, College
Station, Texas 77842, United States
- Chemical
Engineering, Texas A&M University, College Station, Texas 77842, United States
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4
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Wang X, Huo Z, Xie X, Shanaiah N, Tong R. Recent Advances in Sequence-Controlled Ring-Opening Copolymerizations of Monomer Mixtures. Chem Asian J 2023; 18:e202201147. [PMID: 36571563 DOI: 10.1002/asia.202201147] [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: 11/13/2022] [Revised: 12/14/2022] [Accepted: 12/23/2022] [Indexed: 12/27/2022]
Abstract
Transforming renewable resources into functional and degradable polymers is driven by the ever-increasing demand to replace unsustainable polyolefins. However, the utility of many degradable homopolymers remains limited due to their inferior properties compared to commodity polyolefins. Therefore, the synthesis of sequence-defined copolymers from one-pot monomer mixtures is not only conceptually appealing in chemistry, but also economically attractive by maximizing materials usage and improving polymers' performances. Among many polymerization strategies, ring-opening (co)polymerization of cyclic monomers enables efficient access to degradable polymers with high control on molecular weights and molecular weight distributions. Herein, we highlight recent advances in achieving one-pot, sequence-controlled polymerizations of cyclic monomer mixtures using a single catalytic system that combines multiple catalytic cycles. The scopes of cyclic monomers, catalysts, and polymerization mechanisms are presented for this type of sequence-controlled ring-opening copolymerization.
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Affiliation(s)
- Xiaoqian Wang
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, 24061, Blacksburg, VA, USA
| | - Ziyu Huo
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, 24061, Blacksburg, VA, USA
| | - Xiaoyu Xie
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, 24061, Blacksburg, VA, USA
| | - Narasimhamurthy Shanaiah
- Department of Chemistry, Virginia Polytechnic Institute and State University, 1040 Drillfield Drive, 24061, Blacksburg, VA, USA
| | - Rong Tong
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, 24061, Blacksburg, VA, USA
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5
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Capacchione C, Grisi F, Lamberti M, Mazzeo M, Milani B, Milione S, Pappalardo D, Zuccaccia C, Pellecchia C. Metal Catalyzed Polymerization: From Stereoregular Poly(α‐olefins) to Tailor‐Made Biodegradable/Biorenewable Polymers and Copolymers. Eur J Inorg Chem 2023. [DOI: 10.1002/ejic.202200644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Carmine Capacchione
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Fabia Grisi
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Marina Lamberti
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Mina Mazzeo
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Barbara Milani
- Dipartimento di Scienze Chimiche e Farmaceutiche Università di Trieste Via Licio Giorgieri 1 34127 Trieste Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Stefano Milione
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Daniela Pappalardo
- Dipartimento di Scienze e Tecnologie Università del Sannio Via de Sanctis snc 82100 Benevento Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie Università di Perugia Via Elce di Sotto 8 06132 Perugia Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
| | - Claudio Pellecchia
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno via Giovanni Paolo II 132 84084 Fisciano (SA) Italy
- Consorzio per la Reattività Chimica e la Catalisi (CIRCC) Via Celso Ulpiani 27 70126 Bari Italy
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6
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Gregory GL, Sulley GS, Kimpel J, Łagodzińska M, Häfele L, Carrodeguas LP, Williams CK. Block Poly(carbonate-ester) Ionomers as High-Performance and Recyclable Thermoplastic Elastomers. Angew Chem Int Ed Engl 2022; 61:e202210748. [PMID: 36178774 PMCID: PMC9828403 DOI: 10.1002/anie.202210748] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Indexed: 01/12/2023]
Abstract
Thermoplastic elastomers based on polyesters/carbonates have the potential to maximize recyclability, degradability and renewable resource use. However, they often underperform and suffer from the familiar trade-off between strength and extensibility. Herein, we report well-defined reprocessable poly(ester-b-carbonate-b-ester) elastomers with impressive tensile strengths (60 MPa), elasticity (>800 %) and recovery (95 %). Plus, the ester/carbonate linkages are fully degradable and enable chemical recycling. The superior performances are attributed to three features: (1) Highly entangled soft segments; (2) Fully reversible strain-induced crystallization and (3) Precisely placed ZnII -carboxylates dynamically crosslinking the hard domains. The one-pot synthesis couples controlled cyclic monomer ring-opening polymerization and alternating epoxide/anhydride ring-opening copolymerization. Efficient convresion to ionomers is achieved by reacting vinyl-epoxides to install ZnII -carboxylates.
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Affiliation(s)
- Georgina L. Gregory
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Gregory S. Sulley
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Joost Kimpel
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Matylda Łagodzińska
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Lisa Häfele
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
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7
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Haslewood MND, Farmer TJ, North M. Synthesis and chemoselective crosslinking of functionalized polyesters from bio‐based epoxides and cyclic anhydrides. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Michael North
- Green Chemistry Centre of Excellence University of York York UK
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8
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Lidston CAL, Severson SM, Abel BA, Coates GW. Multifunctional Catalysts for Ring-Opening Copolymerizations. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02524] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Claire A. L. Lidston
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Sarah M. Severson
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Brooks A. Abel
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Geoffrey W. Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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9
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Gaglieri C, Alarcon RT, Magri R, North M, Bannach G. Development of renewable thermosetting polymers based on grape seed oil derivatives. J Appl Polym Sci 2022. [DOI: 10.1002/app.52990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Caroline Gaglieri
- School of Sciences, Chemistry Department UNESP ‐ São Paulo State University Bauru Brazil
| | - Rafael Turra Alarcon
- School of Sciences, Chemistry Department UNESP ‐ São Paulo State University Bauru Brazil
| | - Raquel Magri
- School of Sciences, Chemistry Department UNESP ‐ São Paulo State University Bauru Brazil
| | - Michael North
- Green Chemistry Centre of Excellence, Department of Chemistry The University of York York UK
| | - Gilbert Bannach
- School of Sciences, Chemistry Department UNESP ‐ São Paulo State University Bauru Brazil
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10
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Diment WT, Lindeboom W, Fiorentini F, Deacy AC, Williams CK. Synergic Heterodinuclear Catalysts for the Ring-Opening Copolymerization (ROCOP) of Epoxides, Carbon Dioxide, and Anhydrides. Acc Chem Res 2022; 55:1997-2010. [PMID: 35863044 PMCID: PMC9350912 DOI: 10.1021/acs.accounts.2c00197] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
The development of sustainable
plastic materials is an essential
target of chemistry in the 21st century. Key objectives toward this
goal include utilizing sustainable monomers and the development of
polymers that can be chemically recycled/degraded. Polycarbonates
synthesized from the ring-opening copolymerization (ROCOP) of epoxides
and CO2, and polyesters synthesized from the ROCOP of epoxides
and anhydrides, meet these criteria. Despite this, designing efficient
catalysts for these processes remains challenging. Typical issues
include the requirement for high catalyst loading; low catalytic activities
in comparison with other commercialized polymerizations; and the requirement
of costly, toxic cocatalysts. The development of efficient catalysts
for both types of ROCOP is highly desirable. This Account details
our work on the development of catalysts for these two related polymerizations
and, in particular, focuses on dinuclear complexes, which are typically
applied without any cocatalyst. We have developed mechanistic hypotheses
in tandem with our catalysts, and throughout the Account, we describe
the kinetic, computational, and structure–activity studies
that underpin the performance of these catalysts. Our initial research
on homodinuclear M(II)M(II) complexes for cyclohexene oxide (CHO)/CO2 ROCOP provided data to support a chain shuttling catalytic
mechanism, which implied different roles for the two metals in the
catalysis. This mechanistic hypothesis inspired the development of
mixed-metal, heterodinuclear catalysts. The first of this class of
catalysts was a heterodinuclear Zn(II)Mg(II) complex, which showed
higher rates than either of the homodinuclear [Zn(II)Zn(II) and Mg(II)Mg(II)]
analogues for CHO/CO2 ROCOP. Expanding on this finding,
we subsequently developed a Co(II)Mg(II) complex that showed field
leading rates for CHO/CO2 ROCOP and allowed for unique
insight into the role of the two metals in this complex, where it
was established that the Mg(II) center reduced transition state entropy
and the Co(II) center reduced transition state enthalpy. Following
these discoveries, we subsequently developed a range of heterodinuclear
M(III)M(I) catalysts that were capable of catalyzing a broad range
of copolymerizations, including the ring-opening copolymerization
of CHO/CO2, propylene oxide (PO)/CO2, and CHO/phthalic
anhydride (PA). Catalysts featuring Co(III)K(I) and Al(III)K(I) were
found to be exceptionally effective for PO/CO2 and CHO/PA
ROCOP, respectively. Such M(III)M(I) complexes operate through a dinuclear
metalate mechanism, where the M(III) binds and activates monomers
while the M(I) species binds the polymer change in close proximity
to allow for insertion into the activated monomer. Our research illustrates
how careful catalyst design can yield highly efficient systems and
how the development of mechanistic understanding aids this process.
Avenues of future research are also discussed, including the applicability
of these heterodinuclear catalysts in the synthesis of sustainable
materials.
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Affiliation(s)
- Wilfred T Diment
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Wouter Lindeboom
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Francesca Fiorentini
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Arron C Deacy
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Charlotte K Williams
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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11
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Liang J, Ye S, Wang S, Wang S, Han D, Huang S, Huang Z, Liu W, Xiao M, Sun L, Meng Y. Biodegradable Copolymers from CO 2, Epoxides, and Anhydrides Catalyzed by Organoborane/Tertiary Amine Pairs: High Selectivity and Productivity. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiaxin Liang
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Shuxian Ye
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Siyuan Wang
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Shuanjin Wang
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Dongmei Han
- School of Chemical Engineering and Technology, Sun Yat-Sen University, Guangzhou 510275, China
| | - Sheng Huang
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zhiheng Huang
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Wei Liu
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Min Xiao
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Luyi Sun
- Polymer Program, Institute of Materials Science and Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yuezhong Meng
- The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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12
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Kiriratnikom J, Guo J, Cao X, Khan MU, Zhang C, Zhang X. Metal‐free terpolymerization of propylene oxide, carbon dioxide, and carbonyl sulfide: A facile route to sulfur‐containing polycarbonates with gradient sequences. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiraya Kiriratnikom
- State Key Laboratory of Motor Vehicle Biofuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Jiafang Guo
- State Key Laboratory of Motor Vehicle Biofuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Xiaohan Cao
- State Key Laboratory of Motor Vehicle Biofuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Munir Ullah Khan
- State Key Laboratory of Motor Vehicle Biofuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Chengjian Zhang
- State Key Laboratory of Motor Vehicle Biofuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
| | - Xinghong Zhang
- State Key Laboratory of Motor Vehicle Biofuel Technology, International Research Center for X Polymers, Department of Polymer Science and Engineering Zhejiang University Hangzhou China
- Center of Chemistry for Frontier Technologies Zhejiang University Hangzhou China
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13
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Kerr RWF, Williams CK. Zr(IV) Catalyst for the Ring-Opening Copolymerization of Anhydrides (A) with Epoxides (B), Oxetane (B), and Tetrahydrofurans (C) to Make ABB- and/or ABC-Poly(ester- alt-ethers). J Am Chem Soc 2022; 144:6882-6893. [PMID: 35388696 PMCID: PMC9084548 DOI: 10.1021/jacs.2c01225] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Poly(ester-alt-ethers) can combine beneficial ether linkage flexibility and polarity with ester linkage hydrolysability, furnishing fully degradable polymers. Despite their promising properties, this class of polymers remains underexplored, in part due to difficulties in polymer synthesis. Here, a catalyzed copolymerization using commercially available monomers, butylene oxide (BO)/oxetane (OX), tetrahydrofuran (THF), and phthalic anhydride (PA), accesses a series of well-defined poly(ester-alt-ethers). A Zr(IV) catalyst is reported that yields polymer repeat units comprising a ring-opened PA (A), followed by two ring-opened cyclic ethers (B/C) (-ABB- or -ABC-). It operates with high polymerization control, good rate, and successfully enchains epoxides, oxetane, and/or tetrahydrofurans, providing a straightforward means to moderate the distance between ester linkages. Kinetic analysis of PA/BO copolymerization, with/without THF, reveals an overall second-order rate law: first order in both catalyst and butylene oxide concentrations but zero order in phthalic anhydride and, where it is present, zero order in THF. Poly(ester-alt-ethers) have lower glass-transition temperatures (-16 °C < Tg < 12 °C) than the analogous alternating polyesters, consistent with the greater backbone flexibility. They also show faster ester hydrolysis rates compared with the analogous AB polymers. The Zr(IV) catalyst furnishes poly(ester-alt-ethers) from a range of commercially available epoxides and anhydride; it presents a straightforward method to moderate degradable polymers' properties.
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Affiliation(s)
- Ryan W F Kerr
- Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K
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14
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Gregory GL, Williams CK. Exploiting Sodium Coordination in Alternating Monomer Sequences to Toughen Degradable Block Polyester Thermoplastic Elastomers. Macromolecules 2022; 55:2290-2299. [PMID: 35558439 PMCID: PMC9084597 DOI: 10.1021/acs.macromol.2c00068] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/14/2022] [Indexed: 01/26/2023]
Abstract
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Thermoplastic
elastomers (TPEs) that are closed-loop recyclable
are needed in a circular material economy, but many current materials
degrade during recycling, and almost all are pervasive hydrocarbons.
Here, well-controlled block polyester TPEs featuring regularly placed
sodium/lithium carboxylate side chains are described. They show significantly
higher tensile strengths than unfunctionalized analogues, with high
elasticity and elastic recovery. The materials are prepared using
controlled polymerizations, exploiting a single catalyst that switches
between different polymerization cycles. ABA block polyesters of high
molar mass (60–100 kg mol–1; 21 wt % A-block)
are constructed using the ring-opening polymerization of ε-decalactone
(derived from castor oil; B-block), followed by the alternating ring-opening
copolymerization of phthalic anhydride with 4-vinyl-cyclohexene oxide
(A-blocks). The polyesters undergo efficient functionalization to
install regularly placed carboxylic acids onto the A blocks. Reacting
the polymers with sodium or lithium hydroxide controls the extent
of ionization (0–100%); ionized polymers show a higher tensile
strength (20 MPa), elasticity (>2000%), and elastic recovery (>80%).
In one case, sodium functionalization results in 35× higher stress
at break than the carboxylic acid polymer; in all cases, changing
the quantity of sodium tunes the properties. A leading sample, 2-COONa75 (Mn 100 kg mol–1, 75% sodium), shows a wide operating temperature range (−52
to 129 °C) and is recycled (×3) by hot-pressing at 200 °C,
without the loss of mechanical properties. Both the efficient synthesis
of ABA block polymers and precision ionization in perfectly alternating
monomer sequences are concepts that can be generalized to many other
monomers, functional groups, and metals. These materials are partly
bioderived and have degradable ester backbone chemistries, deliver
useful properties, and allow for thermal reprocessing; these features
are attractive as future sustainable TPEs.
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Affiliation(s)
- Georgina L. Gregory
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Charlotte K. Williams
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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Tsai HJ, Su YC, Liu GL, Ko BT. Dinuclear Nickel and Cobalt Complexes Containing Biocompatible Carboxylate Derivatives as Effective Catalysts for Coupling of Carbon Dioxide with Epoxides: Synthesis, Characterization, and Catalysis. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hsin-Jung Tsai
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Yu-Chia Su
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Guan-Lin Liu
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
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16
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Diment WT, Williams CK. Chain end-group selectivity using an organometallic Al( iii)/K( i) ring-opening copolymerization catalyst delivers high molar mass, monodisperse polyesters. Chem Sci 2022; 13:8543-8549. [PMID: 35974772 PMCID: PMC9337735 DOI: 10.1039/d2sc02752f] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/10/2022] [Indexed: 11/21/2022] Open
Abstract
Polyesters are important plastics, elastomers and fibres; efficient and selective polymerizations making predictable, high molar mass polymers are required. Here, a new type of catalyst for the ring-opening polymerization (ROCOP) of epoxides and anhydrides combines unusually high chain end-group selectivity, fast rates, and good molar mass control. The organometallic heterodinuclear Al(iii)/K(i) complex, applied with a diol, is tolerant to a range of epoxides/phthalic anhydride and produces only α,ω-hydroxyl telechelic polyesters with molar masses from 6–91 kg mol−1, in all cases with monomodal distributions. As proof of its potential, high molar mass poly(vinyl cyclohexene oxide-alt-phthalic anhydride) (91 kg mol−1) shows 5× greater flexural strain at break (εb = 3.7%) and 9× higher maximum flexural stress (σf = 72.3 MPa) than the previously accessed medium molar mass samples (24 kg mol−1). It is also enchains phthalic anhydride, vinyl cyclohexene oxide and ε-decalactone, via switchable catalysis, to make high molar mass triblock polyesters (81 kg mol−1, Đ = 1.04). This selective catalyst should be used in the future to qualify the properties of these ROCOP polyesters and to tune (multi)block polymer structures. A heterodinuclear Al(iii)/K(i) organometallic ring-opening copolymerization catalyst shows exceptional rates, end-group selectivity and good loading tolerance to deliver monodisperse polyesters with molar masses up to 91 kg mol−1.![]()
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Affiliation(s)
- Wilfred T. Diment
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Charlotte K. Williams
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
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Suzuki R, Xia X, Gao T, Yamamoto T, Tajima K, Isono T, Satoh T. Synthesis of Hyperbranched Polyester via Ring-opening Alternating Copolymerisation of Epoxide with Cyclic Anhydride having a Carboxyl Group. Polym Chem 2022. [DOI: 10.1039/d2py00571a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hyperbranched polyesters (HBPEs) are well-known interesting materials in many fields. However, the known synthetic approaches to HBPE lack versatility. Herein, we report a novel synthetic approach to HBPE via ring-opening...
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18
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He G, Li H, Zhao J. One‐Step Sequence‐Selective Synthesis of Block Copolyester from Mixed Phthalic Anhydride, Cyclohexene Oxide, and
δ
‐Valerolactone. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Guanchen He
- Faculty of Materials Science and Engineering South China University of Technology Guangzhou 510640 China
| | - Heng Li
- Faculty of Materials Science and Engineering South China University of Technology Guangzhou 510640 China
| | - Junpeng Zhao
- Faculty of Materials Science and Engineering South China University of Technology Guangzhou 510640 China
- Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of Technology Guangzhou 510640 China
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