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Horeglad P, Rola-Noworyta A, Tuszyński D, Fabianowska I, Marek NA, Gładysz P, Wielgus I, Dąbrowska AM. Enhancing the stereoselectivity of Me 2GaOR(NHC) species in the ring-opening polymerization of rac-lactide, with the help of the chelation effect. RSC Adv 2024; 14:28638-28647. [PMID: 39252994 PMCID: PMC11382099 DOI: 10.1039/d4ra05320f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Accepted: 08/30/2024] [Indexed: 09/11/2024] Open
Abstract
Using dialkylgallium alkoxides with N-hetrocyclic carbenes (Me2GaOR(NHC)) for the ring-opening polymerization of rac-lactide, we have demonstrated the effect of the chelate interaction between the growing PLA chain and gallium on the stereoselectivity of dialkylgallium alkoxide propagating species - Me2Ga(OPLA)(NHC). In order to do so, we have conducted the structure-activity studies of both Me2Ga(OCH2CH2OMe)(NHC) (NHC = SIMes (1) and IMes (2)) and Me2Ga(OCH(Me)CO2Me)(NHC) (NHC = SIMes (3) and IMes (4)), the latter mimicking active species in the ROP of lactide with growing PLA chain. Based on VT NMR and FTIR spectroscopy, the effect of toluene, CH2Cl2 and THF on the structure of 3 and 4 have been demonstrated, especially with regard to the interaction of methyl lactate ligand with gallium. In a combination with the latter, the studies on the activity of 1 and 2 in the ROP of rac-LA, in different solvents, and at temperatures between -40 °C and 40 °C, have shown the extent of the chelation effect on the isoselectivity of Me2Ga(OPLA)(NHC) in the ROP of rac-LA, which varied between P m of 0.75 and 0.89 depending on the polymerization conditions. Both the latter, and the contribution resulting from the structure of Me2Ga(OPLA)(NHC) (P m = 0.75) have been decisive for the total isoselectivity observed under specific conditions. Our finding represents the first evidence demonstrating that the chelation effect, resulting from the weak interaction between the growing PLA chain and the metal centre, can be responsible for the enhancement of stereoselectivity in the ROP of rac-LA with metal alkoxide propagating species. It should remain of interest, especially in the case of metal based catalysts, which are able to carry out the stereoselective polymerization of rac-LA at mild conditions, under which the chelation effect can manifest itself.
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Affiliation(s)
- Paweł Horeglad
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Anna Rola-Noworyta
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Dawid Tuszyński
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Iga Fabianowska
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Natalia Agnieszka Marek
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Patrycja Gładysz
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Ireneusz Wielgus
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
| | - Anna Maria Dąbrowska
- Faculty of Chemistry, Warsaw University of Technology Noakowskiego 3 Warsaw 00-664 Poland +48 22 2345076
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2
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Wang Y, Zhang W, Zhu P, You W, Xue X, Wang R, Ma Y, Sun WH. Intensive Cycloalkyl-Fused Pyridines for Aminopyridyl-Zinc-Heteroimidazoles Achieving High Efficiency toward the Ring-Opening Polymerization of Lactides. Molecules 2024; 29:4150. [PMID: 39274998 PMCID: PMC11397438 DOI: 10.3390/molecules29174150] [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: 07/28/2024] [Revised: 08/23/2024] [Accepted: 08/30/2024] [Indexed: 09/16/2024] Open
Abstract
The model precatalyst sp3- and sp2-N dinitrogen-coordinated zinc-heteroimidazole has been used as an efficient catalyst for the ring-opening polymerization of cyclic esters. Subsequent to our exceptional active 5,6,7-trihydroquinolin-8-amine-zinc catalysts for the ring-opening polymerization (ROP) of ε-caprolactone, various pyridine-fused cycloalkanones (ring size from five to eight) are developed for the correspondent fused amine-pyridine derivatives and their zinc-heteroimidazole chloride complexes Zn1-Zn8 (LZnCl2) bearing N-diphenylphosphinoethyl pendants. Activated with two equivalents of LiN(SiMe3)2, the title zinc complexes efficiently promote the ROP of L-lactide (L-LA) in situ; among them, Zn4/2Li(NSiMe3)2 catalyzed 500 equivalent L-LA at 80 °C with 92% conversion in 5 min (TOF: 5520 h-1). Under the same conditions, the catalytic efficiency for the ROP of rac-LA by Zn1-Zn8/2Li(NSiMe3)2 was slightly lower than that for L-LA (highest TOF: 4440 h-1). In both cases, cyclooctyl-fused pyridyl-zinc complexes exhibited higher activity than others, while the cycloheptyl-fused zinc complexes showed the lowest activity. The microstructure analysis of the polymers showed they possessed a linear structure capped with CH3O as major and cyclic structure as minor. In this work, all the ligands and zinc complexes were well characterized by 1H/13C/31P NMR, FT-IR spectroscopy as well as elemental analysis.
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Affiliation(s)
- Yun Wang
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wenjuan Zhang
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
| | - Pengjiang Zhu
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei You
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaopan Xue
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Rui Wang
- Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Science and Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
| | - Yanping Ma
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen-Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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3
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Sumrit P, Kamavichanurat S, Joopor W, Wattanathana W, Nakornkhet C, Hormnirun P. Aluminium complexes of phenoxy-azo ligands in the catalysis of rac-lactide polymerisation. Dalton Trans 2024; 53:13854-13870. [PMID: 39091186 DOI: 10.1039/d4dt01758g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Fourteen new phenoxy-azo aluminium complexes comprising two series, namely, dimethyl{phenoxy-azo}aluminium complexes 1a-7a and monomethyl{phenoxy-azo}aluminium complexes 1b-7b, were successfully synthesised and characterised. The molecular structure of complex 4a, determined using X-ray diffraction analysis, displayed a distorted tetrahedral geometry. The 1H NMR spectrum of complex 5b revealed fluxional behaviour caused by isomeric transformation that occurs in the solution at room temperature. The activation parameters determined by lineshape analysis of variable-temperature 1H NMR spectra in toluene-d8 are as follows: ΔH‡ = 70.05 ± 1.19 kJ mol-1, ΔS‡ = 21.78 ± 3.58 J mol-1 K-1 and ΔG‡ (298 K) = 63.56 ± 0.11 kJ mol-1. All aluminium complexes are active initiators for the ring-opening polymerisation of rac-lactide, and the polymerisations proceeded in a controlled manner and were living. In comparison, the catalytic activity of the dimethyl{phenoxy-azo}aluminium complexes was insignificantly different from that of the corresponding monomethyl{phenoxy-azo}aluminium complexes. The steric factor of the ortho-phenoxy substituent was observed to exert a decelerating effect on the catalytic rate. Kinetic investigations revealed first-order dependency on both monomer and initiator concentrations. Comparative catalytic investigations conducted on phenoxy-azo aluminium and phenoxy-imine aluminium complexes revealed that the former complexes exhibited lower catalytic activity.
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Affiliation(s)
- Pattarawut Sumrit
- Laboratory of Catalysts and Advanced Polymer Materials, Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
- Centre for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand
| | - Sirawan Kamavichanurat
- Laboratory of Catalysts and Advanced Polymer Materials, Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
- Centre for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand
| | - Wasan Joopor
- Laboratory of Catalysts and Advanced Polymer Materials, Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
- Centre for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand
| | - Worawat Wattanathana
- Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
| | - Chutikan Nakornkhet
- Laboratory of Catalysts and Advanced Polymer Materials, Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
- Centre for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand
| | - Pimpa Hormnirun
- Laboratory of Catalysts and Advanced Polymer Materials, Department of Chemistry and Centre of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
- Centre for Advanced Studies in Nanotechnology for Chemical, Food and Agricultural Industries, Kasetsart University, Bangkok 10900, Thailand
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4
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Li K, Cheng JL, Wang MY, Xiong W, Huang HY, Feng LW, Cai Z, Zhu JB. Kinetic Resolution Polymerization Enabled Chemical Synthesis of Perfectly Isotactic Polythioesters. Angew Chem Int Ed Engl 2024; 63:e202405382. [PMID: 38682252 DOI: 10.1002/anie.202405382] [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: 03/19/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/01/2024]
Abstract
Isotactic polythioesters (PTEs) that are thioester analogs to natural polyhydroxyalkanoates (PHAs) have attracted growing attention due to their distinct properties. However, the development of chemically synthetic methods for preparing isotactic PTEs has long been an intricate endeavour. Herein, we report the successful synthesis of perfectly isotactic PTEs via stereocontrolled ring-opening polymerization. This binaphthalene-salen aluminium (SalBinam-Al) catalyst promoted a robust polymerization of rac-α-substituted-β-propiothiolactones (rac-BTL and rac-PTL) with highly kinetic resolution, affording perfectly isotactic P(BTL) and P(PTL) with Mn up to 276 kDa. Impressively, the isotactic P(BTL) formed a supramolecular stereocomplex with improved thermal property (Tm=204 °C). Ultimately, this kinetic resolution polymerization enabled the facile isolation of enantiopure (S)-BTL, which could efficiently convert to an important pharmaceutical building block (S)-2-benzyl-3-mercapto-propanoic acid. Isotactic P(PTL) served as a tough and ductile material comparable to the commercialized polyolefins. This synthetic system allowed to access of isotactic PTEs, establishing a powerful platform for the discovery of sustainable plastics.
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Affiliation(s)
- Kun Li
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Jing-Liang Cheng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Meng-Yuan Wang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Wei Xiong
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Hao-Yi Huang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Liang-Wen Feng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Zhongzheng Cai
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Jian-Bo Zhu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
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5
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Vakati SR, Vanderlaan G, Gacura MD, Ji X, Chen L, Piovesan D. Synthesis of Poly-Lactic Acid by Ring Open Polymerization from Beer Spent Grain for Drug Delivery. Polymers (Basel) 2024; 16:483. [PMID: 38399861 PMCID: PMC10892441 DOI: 10.3390/polym16040483] [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: 12/26/2023] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
Poly-lactic acid (PLA) is a synthetic polymer that has gained popularity as a scaffold due to well-established manufacturing processes, predictable biomaterial properties, and sustained therapeutic release rates. However, its drawbacks include weak mechanical parameters and reduced medicinal delivery efficacy after PLA degradation. The development of synthetic polymers that can release antibiotics and other medicines remains a top research priority. This study proposes a novel approach to produce PLA by converting Brewer's spent grain (BSG) into lactic acid by bacterial fermentation followed by lactide ring polymerization with a metal catalyst. The elution properties of the PLA polymer are evaluated using modified Kirby-Bauer assays involving the antimicrobial chemotherapeutical, trimethoprim (TMP). Molded PLA polymer disks are impregnated with a known killing concentration of TMP, and the PLA is evaluated as a drug vehicle against TMP-sensitive Escherichia coli. This approach provides a practical means of assessing the polymer's ability to release antimicrobials, which could be beneficial in exploring new drug-eluting synthetic polymer strategies. Overall, this study highlights the potential of using BSG waste materials to produce valuable biomaterials of medical value with the promise of expanded versatility of synthetic PLA polymers in the field of drug-impregnated tissue grafts.
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Affiliation(s)
- Snehal R. Vakati
- Department of Bioengineering and Biomedical Engineering, Gannon University, Erie, PA 16541, USA; (S.R.V.); (X.J.); (L.C.)
| | - Gary Vanderlaan
- Department of Biology, Gannon University, Erie, PA 16541, USA (M.D.G.)
| | - Matthew D. Gacura
- Department of Biology, Gannon University, Erie, PA 16541, USA (M.D.G.)
| | - Xiaoxu Ji
- Department of Bioengineering and Biomedical Engineering, Gannon University, Erie, PA 16541, USA; (S.R.V.); (X.J.); (L.C.)
| | - Longyan Chen
- Department of Bioengineering and Biomedical Engineering, Gannon University, Erie, PA 16541, USA; (S.R.V.); (X.J.); (L.C.)
| | - Davide Piovesan
- Department of Bioengineering and Biomedical Engineering, Gannon University, Erie, PA 16541, USA; (S.R.V.); (X.J.); (L.C.)
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6
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Buchard A, Davidson MG, Gobius du Sart G, Jones MD, Kociok-Köhn G, McCormick SN, McKeown P. Unexpected Periodicity in Cationic Group 5 Initiators for the Ring-Opening Polymerization of Lactones. Inorg Chem 2024; 63:27-38. [PMID: 38118120 PMCID: PMC10777398 DOI: 10.1021/acs.inorgchem.3c03854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/23/2023] [Accepted: 12/04/2023] [Indexed: 12/22/2023]
Abstract
ε-Caprolactone (ε-CL) adducts of cationic, amine tris(phenolate)-supported niobium(V) and tantalum(V) ethoxides initiate the ring-opening polymerization of lactones. The Ta(V) species prepared and applied catalytically herein exhibits higher activity in the ring-opening polymerization (ROP) of ε-caprolactone than the previously reported, isostructural Nb(V) complex, contradicting literature comparisons of Nb(V)- and Ta(V)-based protocols. Both systems also initiate the ROP of δ-valerolactone and rac-β-butyrolactone, kinetic studies confirming retention of higher activity by the Ta congener. Polymerizations of rac-β-butyrolactone and δ-valerolactone were previously unrealized under Group V- or Ta-mediated conditions, respectively, although the former has afforded only low molecular weight, cyclic poly-3-hydroxybutyrate. Cationic ethoxo-Nb(V) and -Ta(V) δ-valerolactone adducts are also reported, demonstrating the facility of δ-valerolactone as a ligand and the generality of the synthetic method. Both δ-valerolactone-bearing complexes initiate the ROP of ε-caprolactone, δ-valerolactone, and rac-β-butyrolactone. Accordingly, we have elucidated trends in reactivity and investigated the initiation mechanism for such systems, the insertion event being predicated upon intramolecular nucleophilic attack on the coordinated lactone by the adjacent alkoxide moiety. This mechanism enables quantitative, stoichiometric installation of a single monomer residue distinct from the bulk of the polymer chain, and permits modification of polymer properties via both manipulation of the molecular architecture and tuning of the polymerization kinetics, and thus dispersity, through hitherto inaccessible independent control of the initiation event.
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Affiliation(s)
- Antoine Buchard
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, United Kingdom
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Matthew G. Davidson
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, United Kingdom
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | | | - Matthew D. Jones
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, United Kingdom
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Gabriele Kociok-Köhn
- Material
and Chemical Characterization and Analysis Facility (MC), University of Bath, Bath BA2 7AY, United Kingdom
| | - Strachan N. McCormick
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, United Kingdom
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Paul McKeown
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
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7
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Banks HJS, Frese JWA, Elsegood MRJ, Redshaw C. Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies. Chem Commun (Camb) 2024; 60:304-307. [PMID: 38059516 DOI: 10.1039/d3cc04899c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Different combinations of organomagnesium reagents and zinc bromide react with either 1,3-dimethoxy-4-tert-butylcalix[4]areneH2 (L(OMe)2H2) or trialkoxycalix[4]arenes (L(OR)3H) (R = n-Pr, n-pentyl) to afford mixed-metal calix[4]arene systems. Intriguing molecular structures are formed and the systems are capable of the ring opening polymerisation of ε-caprolactone under N2, air, or as melts.
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Affiliation(s)
- Henry J S Banks
- Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - Josef W A Frese
- Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - Mark R J Elsegood
- Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - Carl Redshaw
- Plastics Collaboratory, Chemistry, School of Natural Sciences, University of Hull, Cottingham Road, Hull, HU6 7RX, UK.
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8
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Białek M, Klimasińska A, Spaleniak G, Dziuk B. Titanium and Vanadium Complexes of Tridentate Phenoxy-Imine and Phenoxy-Amine Ligands and Their Application in the Ring-Opening Polymerization of Cyclic Esters. Molecules 2023; 29:87. [PMID: 38202670 PMCID: PMC10779786 DOI: 10.3390/molecules29010087] [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: 11/09/2023] [Revised: 12/02/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
Phenoxy-imine and phenoxy-amine proligands, with the additional OH donor groups 2,4-tBu2-6-(2-CH2(OH)-C6H4N=CH)C6H3OH (L1H2), 6-(2-CH2(OH)-C6H4N=CH)C6H3OH (L2H2), and 2,4-tBu2-6-(2-CH2(OH)-C6H4NH-CH)C6H3OH (L3H2), were synthesized and their titanium (Ti-L1-Ti-L3) and vanadium (V-L1-V-L2) complexes were prepared in reactions with Ti(OiPr)4 and VO(OiPr)3, respectively. All new compounds were characterized with the use of FTIR, 1H, and 13C NMR spectroscopy; X-ray crystallography was also used to study proligands. All the complexes proved to be active catalysts in the ring-opening polymerization (ROP) of ε-caprolactone, rac-lactide, and L-lactide in the melt. The effects of the complex structure (transition metal type, presence of tBu substituents, and type of nitrogen donor group), as well as the polymerization time and temperature, on the monomer conversion and polymer properties were investigated in detail.
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Affiliation(s)
- Marzena Białek
- Institute of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland (G.S.)
| | - Alicja Klimasińska
- Institute of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland (G.S.)
| | - Grzegorz Spaleniak
- Institute of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland (G.S.)
| | - Błażej Dziuk
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50370 Wrocław, Poland;
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9
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Dai J, Xiong W, Li DY, Cai Z, Zhu JB. Bifunctional thiourea-based organocatalyst promoted kinetic resolution polymerization of racemic lactide to isotactic polylactide. Chem Commun (Camb) 2023; 59:12731-12734. [PMID: 37800444 DOI: 10.1039/d3cc04203k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Here, we prepared a series of thiourea-based organocatalysts 1-7 by combining two stereogenic elements: binaphthyl-amine and cyclohexyl diamine moieties. Catalyst (R,S)-1 facilitated a stereoselective polymerization of rac-LA to afford iso-enriched PDLA with Pm of 0.96 while its enantiomer (S,R)-1 produced PLLA with Pm of 0.96. These iso-enriched PLA contributed to forming a stereocomplexed PLA with a significantly increased Tm of 196 °C.
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Affiliation(s)
- Jiang Dai
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
| | - Wei Xiong
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
| | - Dong-Yu Li
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
| | - Zhongzheng Cai
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
| | - Jian-Bo Zhu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China.
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10
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Mankaev BN, Karlov SS. Metal Complexes in the Synthesis of Biodegradable Polymers: Achievements and Prospects. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6682. [PMID: 37895663 PMCID: PMC10608263 DOI: 10.3390/ma16206682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023]
Abstract
This review describes recent advances in the synthesis of homopolymers of lactide and related cyclic esters via ring-opening polymerization (ROP) in the presence of metal complexes based on group 1, 2, 4, 12, 13 and 14 metals. Particular attention is paid to the influence of the initiator structure on the properties of the obtaining homo- and copolymers. Also, a separate chapter is devoted to the study of metal complexes in the synthesis of copolymers of lactide and lactones. This review highlights the efforts made over the last ten years or so, and shows how main-group metals have received increasing attention in the field of the polymerization of lactide and related cyclic esters.
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Affiliation(s)
- Badma N. Mankaev
- Chemistry Department, Lomonosov Moscow State University, 119991 Moscow, Russia;
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Science, 119991 Moscow, Russia
| | - Sergey S. Karlov
- Chemistry Department, Lomonosov Moscow State University, 119991 Moscow, Russia;
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Science, 119991 Moscow, Russia
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11
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Wang X, Huang Y, Xie X, Liu Y, Huo Z, Lin M, Xin H, Tong R. Bayesian-optimization-assisted discovery of stereoselective aluminum complexes for ring-opening polymerization of racemic lactide. Nat Commun 2023; 14:3647. [PMID: 37339991 DOI: 10.1038/s41467-023-39405-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 06/12/2023] [Indexed: 06/22/2023] Open
Abstract
Stereoselective ring-opening polymerization catalysts are used to produce degradable stereoregular poly(lactic acids) with thermal and mechanical properties that are superior to those of atactic polymers. However, the process of discovering highly stereoselective catalysts is still largely empirical. We aim to develop an integrated computational and experimental framework for efficient, predictive catalyst selection and optimization. As a proof of principle, we have developed a Bayesian optimization workflow on a subset of literature results for stereoselective lactide ring-opening polymerization, and using the algorithm, we identify multiple new Al complexes that catalyze either isoselective or heteroselective polymerization. In addition, feature attribution analysis uncovers mechanistically meaningful ligand descriptors, such as percent buried volume (%Vbur) and the highest occupied molecular orbital energy (EHOMO), that can access quantitative and predictive models for catalyst development.
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Affiliation(s)
- Xiaoqian Wang
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA
| | - Yang Huang
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA
| | - Xiaoyu Xie
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA
| | - Yan Liu
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA
| | - Ziyu Huo
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA
| | - Maverick Lin
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA
| | - Hongliang Xin
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA.
| | - Rong Tong
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, VA, 24061, USA.
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12
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Azcona J, Olguín C, Durán A, Fernández-Rodríguez J. Approach to anaerobic bio-degradation of natural and synthetic fabrics: Physico-chemical study of the alteration processes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118366. [PMID: 37320924 DOI: 10.1016/j.jenvman.2023.118366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/10/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Abstract
In this paper, the mesophilic Biochemical Methane Potential of several fabrics was assessed at different Total Solid concentrations (1-4%TS). Physico-chemical techniques were applied to explore the arising structural changes on fibers during the anaerobic digestion process. Additionally, the modified Gompertz model was used to assess and compare the AD performance of the fabrics. In cellulose-based fibers the production of biogas was enhanced thanks to the easy solubilization of acetate, which is generated upon partial breakage of cellulose bonds. The crystallinity of vegetal fibers decreased significantly from day 19. The highest methane yields were attained for silk and wool fabrics at the lowest TS concentrations. Conformational changes in fibroin and keratin were detected. The highest degrees of degradation were observed in solid samples with lower solid concentrations. Accordingly, the maximum methane yields were reported in the reactors operating with lower TS.
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Affiliation(s)
- Jesús Azcona
- University of Navarra, Department of Chemistry, Irunlarrea 1, 31008, Pamplona, Spain
| | - Catherine Olguín
- University of Navarra, Department of Chemistry, Irunlarrea 1, 31008, Pamplona, Spain
| | - Adrián Durán
- University of Navarra, Department of Chemistry, Irunlarrea 1, 31008, Pamplona, Spain.
| | - Juana Fernández-Rodríguez
- University of Navarra, Department of Chemistry, Irunlarrea 1, 31008, Pamplona, Spain; University of Cádiz. Department of Environmental Technologies, IVAGRO, Faculty of Marine and Environmental Sciences (CASEM), Pol. Río San Pedro S/n, 11510, Puerto Real, Cádiz, Spain.
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13
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Westlie AH, Hesse SA, Tang X, Quinn EC, Parker CR, Takacs CJ, Tassone CJ, Chen EYX. All-Polyhydroxyalkanoate Triblock Copolymers via a Stereoselective-Chemocatalytic Route. ACS Macro Lett 2023; 12:619-625. [PMID: 37094112 DOI: 10.1021/acsmacrolett.3c00162] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Biodegradable polyhydroxyalkanoate (PHA) homopolymers and statistical copolymers are ubiquitous in microbially produced PHAs, but the step-growth polycondensation mechanism the biosynthesis operates on presents a challenge to access well-defined block copolymers (BCPs), especially higher-order tri-BCP PHAs. Here we report a stereoselective-chemocatalytic route to produce discrete hard-soft-hard ABA all-PHA tri-BCPs based on the living chain-growth ring-opening polymerization of racemic (rac) 8-membered diolides (rac-8DLR; R denotes the two substituents on the ring). Depending on the composition of the soft B block, originated from rac-8DLR (R = Et, nBu), and its ratio to the semicrystalline, high-melting hard A block, derived from rac-8DLMe, the resulting all-PHA tri-BCPs with high molar mass (Mn up to 238 kg mol-1) and low dispersity (Đ = 1.07) exhibit tunable mechanical properties characteristic of a strong and tough thermoplastic, elastomer, or a semicrystalline thermoplastic elastomer.
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Affiliation(s)
- Andrea H Westlie
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Sarah A Hesse
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Xiaoyan Tang
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Ethan C Quinn
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Celine R Parker
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Christopher J Takacs
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Christopher J Tassone
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
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14
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Martínez de Sarasa Buchaca M, de la Cruz-Martínez F, Sánchez-Barba LF, Tejeda J, Rodríguez AM, Castro-Osma JA, Lara-Sánchez A. One-pot terpolymerization of CHO, CO 2 and L-lactide using chloride indium catalysts. Dalton Trans 2023; 52:3482-3492. [PMID: 36843480 DOI: 10.1039/d3dt00391d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Ring-opening copolymerization reactions of epoxides, carbon dioxide and cyclic esters to produce copolymers is a promising strategy to prepare CO2-based polymeric materials. In this contribution, bimetallic chloride indium complexes have been developed as catalysts for the copolymerization processes of cyclohexene oxide, carbon dioxide and L-lactide under mild reaction conditions. The catalysts displayed good catalytic activity and excellent selectivity towards the preparation of poly(cyclohexene carbonate) (PCHC) at one bar CO2 pressure in the absence of a co-catalyst. Additionally, polyester-polycarbonate copolymers poly(lactide-co-cyclohexene carbonate) (PLA-co-PCHC) were obtained via an one-pot one-step route without the use of a co-catalyst. The degree of incorporation of carbon dioxide can be easily modulated by changing the CO2 pressure and the monomer feed, resulting in copolymers with different thermal properties.
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Affiliation(s)
- Marc Martínez de Sarasa Buchaca
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad Real, Spain.
| | - Felipe de la Cruz-Martínez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad Real, Spain.
| | - Luis F Sánchez-Barba
- Departamento de Biología y Geología, Física y Química Inorgánica, Universidad Rey Juan Carlos, Móstoles, 28933 Madrid, Spain
| | - Juan Tejeda
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad Real, Spain.
| | - Ana M Rodríguez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad Real, Spain.
| | - José A Castro-Osma
- Universidad de Castilla-La Mancha, Dpto. de Química Inorgánica, Orgánica y Bioquímica, Facultad de Farmacia, 02071-Albacete, Spain.
| | - Agustín Lara-Sánchez
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad Real, Spain.
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15
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Wen Y, Nie R, Li B, Li S. Ligand-Promoted Bifunctional Cobalt-Catalyzed Carbonylation-Polymerization of Epoxides: One Step to Polyhydroxyalkanoates. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Yuan Wen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Ruifang Nie
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Bo Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Suhua Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
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16
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Sorensen CC, Kozuszek CT, Borden MA, Leibfarth FA. Asymmetric Ion-Pairing in Stereoselective Vinyl Polymerization. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- Cole C. Sorensen
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Caleb T. Kozuszek
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Meredith A. Borden
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Frank A. Leibfarth
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
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17
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Buchard A, Chuck CJ, Davidson MG, Gobius du Sart G, Jones MD, McCormick SN, Russell AD. A Highly Active and Selective Zirconium-Based Catalyst System for the Industrial Production of Poly(lactic acid). ACS Catal 2023; 13:2681-2695. [PMID: 36846823 PMCID: PMC9942235 DOI: 10.1021/acscatal.2c05690] [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: 11/20/2022] [Revised: 01/20/2023] [Indexed: 02/10/2023]
Abstract
The biodegradable, aliphatic polyester poly(lactic acid), PLA, is a leading bio-based alternative to petrochemical-derived plastic materials across a range of applications. Widely reported in the available literature as a benchmark for PLA production via the bulk ring-opening polymerization of lactides is the use of divalent tin catalysts, and particularly tin(II) bis(2-ethylhexanoate). We present an alternative zirconium-based system that combines an inexpensive Group IV metal with the robustness, high activity, control, and designed compatibility with existing facilities and processes, that are required for industrial use. We have carried out a comprehensive kinetic study and applied a combined experimental and theoretical approach to understanding the mechanism by which the polymerization of lactide proceeds in the presence of this system. In the laboratory-scale (20 g) polymerization of recrystallized racemic d,l-lactide (rac-lactide), we have measured catalyst turnover frequencies up to at least 56,000 h-1, and confirmed the reported protocols' resistance toward undesirable epimerization, transesterification, and chain scission processes, deleterious to the properties of the polymer product. Further optimization and scale-up under industrial conditions have confirmed the relevance of the catalytic protocol to the commercial production of melt-polymerized PLA. We were able to undertake the efficient preparation of high-molecular-weight PLA on the 500-2000 g scale, via the selective and well-controlled polymerization of commercial polymer-grade l-lactide under challenging, industrially relevant conditions, and at metal concentrations as low as 8-12 ppm Zr by weight ([Zr] = 1.3 × 10-3 to 1.9 × 10-3 mol %). Under those conditions, a catalyst turnover number of at least 60,000 was attained, and the activity of the catalyst was comparable to that of tin(II) bis(2-ethylhexanoate).
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Affiliation(s)
- Antoine Buchard
- Institute
for Sustainability, University of Bath, BathBA2 7AY, U.K.
- Department
of Chemistry, University of Bath, BathBA2 7AY, U.K.
| | - Christopher J. Chuck
- Institute
for Sustainability, University of Bath, BathBA2 7AY, U.K.
- Department
of Chemical Engineering, University of Bath, BathBA2 7AY, U.K.
| | - Matthew G. Davidson
- Institute
for Sustainability, University of Bath, BathBA2 7AY, U.K.
- Department
of Chemistry, University of Bath, BathBA2 7AY, U.K.
| | | | - Matthew D Jones
- Institute
for Sustainability, University of Bath, BathBA2 7AY, U.K.
- Department
of Chemistry, University of Bath, BathBA2 7AY, U.K.
| | - Strachan N. McCormick
- Institute
for Sustainability, University of Bath, BathBA2 7AY, U.K.
- Department
of Chemistry, University of Bath, BathBA2 7AY, U.K.
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18
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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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19
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Zhou T, Meng XB, Du FS, Li ZC. Fully Bio-based Poly(ketal-ester)s by Ring-opening Polymerization of a Bicylcic Lactone from Glycerol and Levulinic Acid. Chem Asian J 2023; 18:e202201238. [PMID: 36756897 DOI: 10.1002/asia.202201238] [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: 12/11/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/10/2023]
Abstract
A fully renewable bio-based bicyclic lactone containing a five-membered cyclic ketal moiety, 7-methyl-3,8,10-trioxabicyclo[5.2.1]decan-4-one (TOD), was synthesized through a two-step acid-catalyzed process from glycerol and levulinic acid. The ring-opening polymerization (ROP) of TOD at 30°C with benzyl alcohol (BnOH) as the initiator and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as the catalyst can afford high molar mass PTOD with a cis-2.4-disubstitued 2-methyl 1,3-dioxolane moiety in its repeating unit. PTOD is an amorphous polymer with a glass transition temperature (Tg ) of 13°C. It can be hydrolyzed into structurally defined small molecules under acidic or basic conditions by the selective cleavage of either the cyclic ketal or the ester linkage respectively. The TBD-catalyzed copolymerization of L-lactide (L-LA) and TOD at -20°C was investigated. It was confirmed that L-LA polymerized quickly with racemization to form PLA, followed by a slow incorporation of TOD into the formed PLA chains via transesterification. By varying the feed ratios of L-LA to TOD, a series of random copolymers (PLA-co-PTOD) with different TOD incorporation ratios and tunable Tg s were obtained. Under acidic conditions, PLA-co-PTOD degrades much faster than PLA via the selective cleavage of the cyclic ketal linkages. This work provides insights for the development of more sustainable and acid-accelerated degradable alternatives to aliphatic polyesters.
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Affiliation(s)
- Tong Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polym. Chem. & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Xian-Bin Meng
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polym. Chem. & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Fu-Sheng Du
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polym. Chem. & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Zi-Chen Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polym. Chem. & Physics of Ministry of Education, Department of Polymer Science & Engineering, College of Chemistry and Molecular Engineering, Center for Soft Matter Science and Engineering, Peking University, Beijing, 100871, P. R. China
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20
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Su RR, Ganta PK, Cheng CA, Hu YT, Chang YC, Chang CJ, Ding S, Chen HY, Wu KH. Ring-opening polymerization of ε-caprolactone and L-lactide using ethyl salicylate-bearing zinc complexes as catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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21
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Zaitsev KV, Trubachev AD, Oprunenko YF, Piskun YA, Vasilenko IV, Churakov AV, Kostjuk SV. Aluminum Salen Complexes Modified with Unsaturated Alcohol: Synthesis, Characterization, and Their Activity towards Ring-Opening Polymerization of ε-Caprolactone and D, L-Lactide. Molecules 2023; 28:molecules28031262. [PMID: 36770928 PMCID: PMC9920203 DOI: 10.3390/molecules28031262] [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: 11/28/2022] [Revised: 12/21/2022] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
A highly efficient one-step approach to the macromonomer synthesis using modified aluminum complexes as catalysts of ring-opening polymerization (ROP) of ε-caprolactone and D,L-lactide was developed. The syntheses, structures, and catalytic activities of a wide range of aluminum salen complexes, 3a-c, functionalized with unsaturated alcohol (HO(CH2)4OCH=CH2) are reported. X-Ray diffraction studies revealed a tetragonal pyramidal structure for 3c. Among the complexes 3a-c, the highest activity in bulk ROP of ε-caprolactone and D,L-lactide was displayed by 3b, affording polyesters with controlled molecular weights at low monomer to initiator ratios (Mn up to 15,000 g mol-1), relatively high polydispersities (Ð~1.8) and high number-average functionalities (Fn up to 85%).
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Affiliation(s)
- Kirill V. Zaitsev
- Department of Chemistry, Moscow State University, Leninskye Gory 1, 3, Moscow 119991, Russia
- Correspondence: (K.V.Z.); (I.V.V.); (S.V.K.)
| | - Andrey D. Trubachev
- Department of Chemistry, Moscow State University, Leninskye Gory 1, 3, Moscow 119991, Russia
| | - Yuri F. Oprunenko
- Department of Chemistry, Moscow State University, Leninskye Gory 1, 3, Moscow 119991, Russia
| | - Yuliya A. Piskun
- Research Institute for Physical Chemical Problems of the Belarusian State University, Leningradskaya Str., 14, 220006 Minsk, Belarus
| | - Irina V. Vasilenko
- Research Institute for Physical Chemical Problems of the Belarusian State University, Leningradskaya Str., 14, 220006 Minsk, Belarus
- Faculty of Chemistry, Belarusian State University, Leningradskaya Str., 14, 220006 Minsk, Belarus
- Correspondence: (K.V.Z.); (I.V.V.); (S.V.K.)
| | - Andrei V. Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Pr., 31, Moscow 119991, Russia
| | - Sergei V. Kostjuk
- Research Institute for Physical Chemical Problems of the Belarusian State University, Leningradskaya Str., 14, 220006 Minsk, Belarus
- Faculty of Chemistry, Belarusian State University, Leningradskaya Str., 14, 220006 Minsk, Belarus
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, 8-2, Trubetskaya Str., Moscow 119992, Russia
- Correspondence: (K.V.Z.); (I.V.V.); (S.V.K.)
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22
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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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23
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Ritacco I, Voccia M, Impemba S, Camellone MF, Milione S, Caporaso L. Electronic and Steric Effects on L‐Lactide Ring‐Opening Polymerization with NSSN‐type Zr(IV) Complexes. Eur J Inorg Chem 2023. [DOI: 10.1002/ejic.202200588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ida Ritacco
- DCB, Department of Chemistry University of Salerno Via Giovanni Paolo II 84084 Fisciano Salerno Italy
| | - Maria Voccia
- CNR-ITAE, Consiglio Nazionale delle Ricerche Istituto di Tecnologie Avanzate per l'Energia “Nicola Giordano” Salita Santa Lucia Sopra Contesse 5 98126 Messina Italy
| | - Salvatore Impemba
- CNR-ICCOM Consiglio Nazionale delle Ricerche Istituto di Chimica dei Composti Organometallici 50019 Firenze Italy
| | - Matteo Farnesi Camellone
- CNR-IOM Istituto Officina dei Materiali Consiglio Nazionale delle Ricerche Edificio Q2 Area Science Park Strada Statale 14 34149 Basovizza, Trieste Italy
| | - Stefano Milione
- DCB, Department of Chemistry University of Salerno Via Giovanni Paolo II 84084 Fisciano Salerno Italy
| | - Lucia Caporaso
- DCB, Department of Chemistry University of Salerno Via Giovanni Paolo II 84084 Fisciano Salerno Italy
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24
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Kamavichanurat S, Jampakaew K, Hormnirun P. Controlled and effective ring-opening (co)polymerization of rac-lactide, ε-caprolactone and ε-decalactone by β-pyrimidyl enolate aluminum complexes. Polym Chem 2023. [DOI: 10.1039/d3py00036b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
A series of β-pyrimidyl enolate aluminum complexes (1–6) were found to promote controlled and living ROP of rac-LA, ε-CL, and ε-DL. Six well-defined diblock copolymers and the perfect random copolymer poly(l-LA-r-CL) were successfully synthesized.
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25
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Ring-opening polymerization of cyclic esters mediated by zinc complexes coordinated with benzotriazo-based imino-phenoxy ligands. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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26
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Jiang J, Choi J, Yoon S. Living ring-opening polymerization of β-butyrolactone initiated by mononuclear zirconium compounds containing sterically hindered N, O-chelate and anionic dimethylamide ligands †. RSC Adv 2023; 13:10379-10383. [PMID: 37020882 PMCID: PMC10068430 DOI: 10.1039/d3ra00338h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/23/2023] [Indexed: 04/05/2023] Open
Abstract
The ring-opening polymerization of β-lactones into polyhydroxyalkanoates (PHA), biodegradable polymers with high molecular weight and narrow polydispersity, is of significant interest. The mononuclear zirconium compound containing sterically hindered N,O-chelate and anionic dimethylamide ligands was used as an initiator for the polymerization of β-butyrolactone (BBL), resulting in polyhydroxylbutyrate (PHB) with a number-average molecular weight of 12 000 g mol−1. Kinetic studies demonstrate a first-order dependence on β-butyrolactone (BBL) concentration at room temperature, accompanied by narrow molecular weight distributions (ca. 1.03–1.07), indicating a well-controlled living polymerization. The ring-opening polymerization of β-lactones into polyhydroxyalkanoates (PHA), biodegradable polymers with high molecular weight and narrow polydispersity, is of significant interest.![]()
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Affiliation(s)
- Jianwei Jiang
- Department of Chemistry, Chung-Ang UniversitySeoul 06974Republic of Korea
| | - Jihyun Choi
- Department of Chemistry, Chung-Ang UniversitySeoul 06974Republic of Korea
| | - Sungho Yoon
- Department of Chemistry, Chung-Ang UniversitySeoul 06974Republic of Korea
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27
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Duan R, Hu C, Liu Y, Bian X, Pang X, Chen X. In Situ Initiation of Epoxides: Activated Metal Salt Catalysts for Cyclic Ester Polymerization. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ranlong Duan
- University of Science and Technology of China, Hefei 230027, Anhui, China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Chenyang Hu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yanlong Liu
- University of Science and Technology of China, Hefei 230027, Anhui, China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xinchao Bian
- University of Science and Technology of China, Hefei 230027, Anhui, China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuan Pang
- University of Science and Technology of China, Hefei 230027, Anhui, China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuesi Chen
- University of Science and Technology of China, Hefei 230027, Anhui, China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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28
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Tang X, Shi C, Zhang Z, Chen EY. Crystalline aliphatic polyesters from eight‐membered cyclic (di)esters. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiaoyan Tang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering Peking University Beijing China
- Department of Chemistry Colorado State University Fort Collins Colorado USA
| | - Changxia Shi
- Department of Chemistry Colorado State University Fort Collins Colorado USA
| | - Zhen Zhang
- Department of Chemistry Colorado State University Fort Collins Colorado USA
| | - Eugene Y.‐X. Chen
- Department of Chemistry Colorado State University Fort Collins Colorado USA
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29
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Stereocomplex crystallization of chiral hydroxyalkanoic acid-based biodegradable alternating copolyesters with two types of chiral centers and opposite monomer configurational combinations of L-D and D-L (S-R and R–S). POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125479] [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]
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30
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Westlie AH, Quinn EC, Parker CR, Chen EYX. Synthetic biodegradable polyhydroxyalkanoates (PHAs): Recent advances and future challenges. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Stereoselective synthesis of biodegradable polymers by salen-type metal catalysts. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1377-5] [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]
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32
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Peterson A, Hador R, Pink M, Popowski Y, Kol M, Tolman WB. Defining Stereochemistry in the Polymerization of Lactide by Aluminum Catalysts: Insights into the Dual-Stereocontrol Mechanism. J Am Chem Soc 2022; 144:20047-20055. [PMID: 36255282 DOI: 10.1021/jacs.2c09073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aspects of the proposed pathway combining chain-end and enantiomorphic site control for the stereospecific polymerization of lactide (LA) were investigated through studies of aluminum complexes supported by enantiopure and racemic bipyrrolidine-based salan ligands, Lig1AlOBn and Lig2AlOBn. Spectroscopic analysis of stoichiometric initiation reactions and the definition of the stereochemistry of the selective formation of the "match" single-insertion products by X-ray crystallography led to key conclusions about the observed stereocontrol. Notably, it was determined to rely heavily on the preference for the trio of stereocenters around the metal to have a "match" formation (RR-ligand + S-polymer), which works synergistically with the enantiomorphic site preference of the catalyst to ring-open next to a stereocenter of a monomer of the same chirality as that of the ligand, resulting in highly heterotactic or syndiotactic PLA from rac- or meso-LA, respectively.
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Affiliation(s)
- Appie Peterson
- Department of Chemistry, Washington University in St. Louis, Campus Box 1134, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Rami Hador
- School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69997801, Israel
| | - Maren Pink
- Indiana University Molecular Structure Center, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Yanay Popowski
- Department of Chemistry, Washington University in St. Louis, Campus Box 1134, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Moshe Kol
- School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69997801, Israel
| | - William B Tolman
- Department of Chemistry, Washington University in St. Louis, Campus Box 1134, 1 Brookings Drive, St. Louis, Missouri 63130, United States
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33
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Hador R, Shuster M, Venditto V, Kol M. Stereogradient Poly(Lactic Acid) from meso-Lactide/L-Lactide Mixtures. Angew Chem Int Ed Engl 2022; 61:e202207652. [PMID: 35789524 PMCID: PMC9796763 DOI: 10.1002/anie.202207652] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Indexed: 01/07/2023]
Abstract
The production of L-lactide from L-lactic acid involves a substantial formation of meso-lactide as an impurity, and, upon polymerization with the industrial catalyst tin octanoate, results in poly(L-lactic acid) of reduced crystallinity due to stereoerrors randomly distributed along the polymer chains. We describe a new approach wherein, instead of avoiding stereoerrors by removing the meso-lactide prior to polymerization, the stereoerrors in the polymer are tolerated, by crowding them in a stereogradient copolymer. A zirconium complex of an amine tris(phenolate) ligand is found to exhibit very high syndioselectivity in the ring opening polymerization catalysis of meso-lactide at room temperature, and gives rise to stereogradient copolymers in the polymerization of mixtures of meso-lactide/L-lactide in the melt at 180 °C. Relative to the stereo-random copolymers obtained with tin octanoate, the stereogradient copolymers exhibit enhanced crystallinities manifested in lower solubilities and higher melting temperatures and enthalpies.
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Affiliation(s)
- Rami Hador
- School of ChemistryTel Aviv UniversityRamat AvivTel Aviv6997801Israel
| | | | - Vincenzo Venditto
- Department of Chemistry and Biology A. Zambelli, and INSTM Research UnitUniversity of SalernoVia Giovanni Paolo II 13284084Fisciano (SA)Italy
| | - Moshe Kol
- School of ChemistryTel Aviv UniversityRamat AvivTel Aviv6997801Israel
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34
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Shan P, Lu Y, Lu W, Yin X, Liu H, Li D, Lian X, Wang W, Li Z, Li Z. Biodegradable and Light-Responsive Polymeric Nanoparticles for Environmentally Safe Herbicide Delivery. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43759-43770. [PMID: 36111970 DOI: 10.1021/acsami.2c12106] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The low utilization efficiency of pesticides exerts an adverse impact on the environment and human health. Polymer-related controlled-release nanosized pesticide systems provide a promising and efficient way to overcome the problem. In this work, a biodegradable and light-responsive amphiphilic polymer was synthesized via 1,1,3,3-tetramethylguanidine-promoted polyesterification under mild conditions (low temperature, no vacuum, and no inert gas protection). We used this polymer to fabricate a light-triggered controlled-release nanosized pesticide system. The herbicide, 2,4-dichlorophenoxyacetic acid (2,4-D), was selected as a model drug to show its potential as a controlled-release pesticide system. It was found that the 2,4-D-loaded polymeric nanoparticles were stable without the treatment of UV, while the release rate of 2,4-D from the nanoparticles gradually increased after treatment with UV light. Pot trial showed that the 2,4-D-loaded polymer nanoparticles showed a good herbicidal effect. Finally, toxicity studies suggested that the polymer can reduce toxicity to nontarget organisms.
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Affiliation(s)
- Pengfei Shan
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Yingwen Lu
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Weilin Lu
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Xiangping Yin
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Haiwei Liu
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Daai Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Xiaoyue Lian
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
| | - Weiping Wang
- State Key Laboratory of Pharmaceutical Biotechnology and Dr. Li Dak-Sum Research Centre and Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR 999077, China
| | - Zhongyu Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China
| | - Zhihui Li
- School of Optometry and Ophthalmology and Eye Hospital, State Key Laboratory of Optometry and Vision Science, Wenzhou Medical University, Wenzhou 325027, China
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35
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Ghosh S, Schulte Y, Wölper C, Tjaberings A, Gröschel AH, Haberhauer G, Schulz S. Cooperative Effect in Binuclear Zinc Catalysts in the ROP of Lactide. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Swarup Ghosh
- Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 7, S07S03C30, 45141 Essen, Germany
| | - Yannick Schulte
- Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 7, S07S03C30, 45141 Essen, Germany
| | - Christoph Wölper
- Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 7, S07S03C30, 45141 Essen, Germany
| | - Alexander Tjaberings
- Faculty of Chemistry, University of Münster and Center for Soft Nanoscience (SoN), Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - André H. Gröschel
- Faculty of Chemistry, University of Münster and Center for Soft Nanoscience (SoN), Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - Gebhard Haberhauer
- Organic Chemistry, University of Duisburg-Essen, Universitätsstraße 7, S07S05C39, 45141 Essen, Germany
| | - Stephan Schulz
- Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 7, S07S03C30, 45141 Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE), Carl-Benz-Straße 199, 47057 Duisburg, Germany
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36
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Liu Y, Zhang J, Kou X, Liu S, Li Z. Highly Active Organocatalysts for Stereoselective Ring-Opening Polymerization of Racemic Lactide at Room Temperature. ACS Macro Lett 2022; 11:1183-1189. [DOI: 10.1021/acsmacrolett.2c00425] [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)
- Yongxin Liu
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Jinbo Zhang
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Xinhui Kou
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Shaofeng Liu
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Zhibo Li
- Key Laboratory of Biobased Polymer Materials, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
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37
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Moya-Lopez C, González-Fuentes J, Bravo I, Chapron D, Bourson P, Alonso-Moreno C, Hermida-Merino D. Polylactide Perspectives in Biomedicine: From Novel Synthesis to the Application Performance. Pharmaceutics 2022; 14:1673. [PMID: 36015299 PMCID: PMC9415503 DOI: 10.3390/pharmaceutics14081673] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/24/2022] Open
Abstract
The incessant developments in the pharmaceutical and biomedical fields, particularly, customised solutions for specific diseases with targeted therapeutic treatments, require the design of multicomponent materials with multifunctional capabilities. Biodegradable polymers offer a variety of tailored physicochemical properties minimising health adverse side effects at a low price and weight, which are ideal to design matrices for hybrid materials. PLAs emerge as an ideal candidate to develop novel materials as are endowed withcombined ambivalent performance parameters. The state-of-the-art of use of PLA-based materials aimed at pharmaceutical and biomedical applications is reviewed, with an emphasis on the correlation between the synthesis and the processing conditions that define the nanostructure generated, with the final performance studies typically conducted with either therapeutic agents by in vitro and/or in vivo experiments or biomedical devices.
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Affiliation(s)
- Carmen Moya-Lopez
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Joaquín González-Fuentes
- Centro Regional de Investigaciones Biomédicas (CRIB), 02008 Albacete, Spain
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
| | - Iván Bravo
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
- Unidad NanoCRIB, Centro Regional de Investigaciones Biomédicas, 02008 Albacete, Spain
| | - David Chapron
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Patrice Bourson
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Carlos Alonso-Moreno
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
- Unidad NanoCRIB, Centro Regional de Investigaciones Biomédicas, 02008 Albacete, Spain
| | - Daniel Hermida-Merino
- DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
- Departamento de Física Aplicada, CINBIO, Lagoas-Marcosende Campus, Universidade de Vigo, 36310 Vigo, Spain
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38
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Zinc and magnesium catalysts for the synthesis for PLA and its degradation: Clues for catalyst design. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Feng C, Mu D, Zhu X, Wang Y, Yuan D, Yao Y. Synthesis of Benzoxazine Functionalized Amine‐Bridged Bis(phenolato) Rare Earth Complexes and Their Application in Ring‐Opening Polymerization of
rac
‐Lactide. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chunping Feng
- Key Laboratory of Organic Synthesis of Jiangsu Province, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering & Materials Science, Dushu Lake Campus Soochow University Suzhou 215123 China
| | - Debao Mu
- Key Laboratory of Organic Synthesis of Jiangsu Province, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering & Materials Science, Dushu Lake Campus Soochow University Suzhou 215123 China
| | - Xuehua Zhu
- School of Chemistry and Life Science Suzhou University of Science and Technology Suzhou 215009 China
| | - Yaorong Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering & Materials Science, Dushu Lake Campus Soochow University Suzhou 215123 China
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering & Materials Science, Dushu Lake Campus Soochow University Suzhou 215123 China
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering & Materials Science, Dushu Lake Campus Soochow University Suzhou 215123 China
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40
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Kol M, Hador R, Shuster M, Venditto V. Stereogradient Poly(Lactic Acid) from meso‐Lactide / L‐Lactide Mixtures. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Moshe Kol
- Tel Aviv University School of Chemistry Ramat Aviv 69978 Tel Aviv ISRAEL
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41
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Xing T, Derbyshire M, Elsegood MRJ, Redshaw C. Mixed-metal calix[8]arene complexes: structure, and ring opening polymerisation studies. Chem Commun (Camb) 2022; 58:7427-7430. [PMID: 35696201 DOI: 10.1039/d2cc02236b] [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
Reactions of différent combinations of group V alkoxides or tungsten oxyalkoxide salts with p-tert-butylcalix[8]areneH8 (L8H8) affords mixed-metal calix[8]arene systems. Intruiging molecular structures are formed and the systems are capable of the ring opening polymerisation of ε-caprolactone under N2, air, or as melts affording mostly low molecular weight products.
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Affiliation(s)
- Tian Xing
- Plastics Collaboratory, Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK.
| | - Max Derbyshire
- Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - Mark R J Elsegood
- Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK
| | - Carl Redshaw
- Plastics Collaboratory, Department of Chemistry, University of Hull, Cottingham Road, Hull, HU6 7RX, UK.
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42
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Ring-opening Polymerization of 2-Oxabicyclo[2.2.2]octan-3-one and the Influence of Stereochemistry on the Thermal Properties of the Polyesters. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2725-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Watanabe H, Kanazawa A, Okumoto S, Aoshima S. Role of the Counteranion in the Stereospecific Living Cationic Polymerization of N-Vinylcarbazole and Vinyl Ethers: Mechanistic Investigation and Synthesis of Stereo-Designed Polymers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00090] [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)
- Hironobu Watanabe
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Arihiro Kanazawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | | | - Sadahito Aoshima
- Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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44
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Li H, Ollivier J, Guillaume SM, Carpentier JF. Tacticity Control of Cyclic Poly(3-Thiobutyrate) Prepared by Ring-Opening Polymerization of Racemic β-Thiobutyrolactone. Angew Chem Int Ed Engl 2022; 61:e202202386. [PMID: 35286752 DOI: 10.1002/anie.202202386] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Indexed: 12/19/2022]
Abstract
We report here on the ring-opening polymerization (ROP) of racemic β-thiobutyrolactone (rac-TBL), as the first chemical synthesis of poly(3-thiobutyrolactone) (P3TB), the thioester analogue of the ubiquitous poly(3-hydroxybutyrate) (P3HB). The ROP reactions proceed very fast (TOF >12 000 h-1 at r.t.) in the presence of various metal-based catalysts. Remarkably, catalyst systems based on non-chiral yttrium complexes stabilized by tetradentate amino alkoxy- or diamino-bis(phenolate) ligands {ONXOR1,R2 }2- (X=O, N) provide access to cyclic P3TB with either high isoselectivity (Pm up to 0.90) or high syndiotactic bias (Pr up to 0.70). The stereoselectivity can be controlled by manipulation of the substituents on the ligand platform and adequate choice of the reaction solvent and temperature as well. The cyclic polymer topology is evidenced by MALDI-ToF MS, NMR and TGA. Highly isotactic cyclic P3TB is a semi-crystalline material as revealed by DSC.
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Affiliation(s)
- Hui Li
- Univ Rennes, CNRS, ISCR-UMR 6226, 35000, Rennes, France
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Chellali JE, Alverson AK, Robinson JR. Zinc Aryl/Alkyl β-diketiminates: Balancing Accessibility and Stability for High-Activity Ring-Opening Polymerization of rac-Lactide. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00858] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jonathan E. Chellali
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Alexander K. Alverson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Jerome R. Robinson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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Payne JM, Kamran M, Davidson MG, Jones MD. Versatile Chemical Recycling Strategies: Value-Added Chemicals from Polyester and Polycarbonate Waste. CHEMSUSCHEM 2022; 15:e202200255. [PMID: 35114081 PMCID: PMC9306953 DOI: 10.1002/cssc.202200255] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Indexed: 06/14/2023]
Abstract
ZnII -complexes bearing half-salan ligands were exploited in the mild and selective chemical upcycling of various commercial polyesters and polycarbonates. Remarkably, we report the first example of discrete metal-mediated poly(bisphenol A carbonate) (BPA-PC) methanolysis being appreciably active at room temperature. Indeed, Zn(2)2 and Zn(2)Et achieved complete BPA-PC consumption within 12-18 mins in 2-Me-THF, noting high bisphenol A (BPA) yields (SBPA =85-91 %) within 2-4 h. Further kinetic analysis found such catalysts to possess kapp values of 0.28±0.040 and 0.47±0.049 min-1 respectively at 4 wt%, the highest reported to date. A completely circular upcycling approach to plastic waste was demonstrated through the production of several renewable poly(ester-amide)s (PEAs), based on a terephthalamide monomer derived from bottle-grade poly(ethylene terephthalate) (PET), which exhibited excellent thermal properties.
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Affiliation(s)
- Jack M. Payne
- Centre for Sustainable and Circular TechnologiesUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
| | - Muhammad Kamran
- Centre for Sustainable and Circular TechnologiesUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
| | - Matthew G. Davidson
- Centre for Sustainable and Circular TechnologiesUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
| | - Matthew D. Jones
- Centre for Sustainable and Circular TechnologiesUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
- Department of ChemistryUniversity of BathClaverton DownBathBA2 7AYUnited Kingdom
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Fan HZ, Yang X, Chen JH, Tu YM, Cai Z, Zhu JB. Advancing the Development of Recyclable Aromatic Polyesters by Functionalization and Stereocomplexation. Angew Chem Int Ed Engl 2022; 61:e202117639. [PMID: 35104021 DOI: 10.1002/anie.202117639] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Indexed: 01/09/2023]
Abstract
The development of innovative synthetic polymer systems to overcome the trade-offs between the polymer's depolymerizability and performance properties is in high demand for advanced material applications and sustainable development. In this contribution, we prepared a class of aromatic cyclic esters (M1-M5) from thiosalicylic acid and epoxides by facile one-pot synthesis. Ring-opening polymerization of Ms afforded aromatic polyesters P(M)s with high molecular weights and narrow dispersities. The physical and mechanical properties of P(M)s can be modulated by stereocomplexation and regulation of the side-chain flexibility of the polymers, ultimately achieving high-performance properties such as high thermal stability and crystallinity (Tm up to 209 °C), as well as polyolefin-like high mechanical strength, ductility, and toughness. Furthermore, the functionalizable moieties of P(M)s have driven a wide array of post-polymerization modifications toward access to value-added materials. More importantly, the P(M)s were able to selectively depolymerize into monomers in excellent yields, thus establishing its circular life cycle.
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Affiliation(s)
- Hua-Zhong Fan
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Xing Yang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Jia-Hao Chen
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Yi-Min Tu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Zhongzheng Cai
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
| | - Jian-Bo Zhu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu, 610064, P. R. China
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Sallembien Q, Bouteiller L, Crassous J, Raynal M. Possible chemical and physical scenarios towards biological homochirality. Chem Soc Rev 2022; 51:3436-3476. [PMID: 35377372 DOI: 10.1039/d1cs01179k] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The single chirality of biological molecules in terrestrial biology raises more questions than certitudes about its origin. The emergence of biological homochirality (BH) and its connection with the appearance of life have elicited a large number of theories related to the generation, amplification and preservation of a chiral bias in molecules of life under prebiotically relevant conditions. However, a global scenario is still lacking. Here, the possibility of inducing a significant chiral bias "from scratch", i.e. in the absence of pre-existing enantiomerically-enriched chemical species, will be considered first. It includes phenomena that are inherent to the nature of matter itself, such as the infinitesimal energy difference between enantiomers as a result of violation of parity in certain fundamental interactions, and physicochemical processes related to interactions between chiral organic molecules and physical fields, polarized particles, polarized spins and chiral surfaces. The spontaneous emergence of chirality in the absence of detectable chiral physical and chemical sources has recently undergone significant advances thanks to the deracemization of conglomerates through Viedma ripening and asymmetric auto-catalysis with the Soai reaction. All these phenomena are commonly discussed as plausible sources of asymmetry under prebiotic conditions and are potentially accountable for the primeval chiral bias in molecules of life. Then, several scenarios will be discussed that are aimed to reflect the different debates about the emergence of BH: extra-terrestrial or terrestrial origin (where?), nature of the mechanisms leading to the propagation and enhancement of the primeval chiral bias (how?) and temporal sequence between chemical homochirality, BH and life emergence (when?). Intense and ongoing theories regarding the emergence of optically pure molecules at different moments of the evolution process towards life, i.e. at the levels of building blocks of Life, of the instructed or functional polymers, or even later at the stage of more elaborated chemical systems, will be critically discussed. The underlying principles and the experimental evidence will be commented for each scenario with particular attention on those leading to the induction and enhancement of enantiomeric excesses in proteinogenic amino acids, natural sugars, and their intermediates or derivatives. The aim of this review is to propose an updated and timely synopsis in order to stimulate new efforts in this interdisciplinary field.
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Affiliation(s)
- Quentin Sallembien
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, 75005 Paris, France.
| | - Laurent Bouteiller
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, 75005 Paris, France.
| | - Jeanne Crassous
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes, ISCR-UMR 6226, F-35000 Rennes, France.
| | - Matthieu Raynal
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, Equipe Chimie des Polymères, 4 Place Jussieu, 75005 Paris, France.
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Li S, Lu H, Zhu L, Yan M, Kang X, Luo Y. Ring-opening polymerization of l-lactide catalyzed by food sweetener saccharin with organic base mediated: A computational study. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124747] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yang X, Zhang W, Huang HY, Dai J, Wang MY, Fan HZ, Cai Z, Zhang Q, Zhu JB. Stereoselective Ring-Opening Polymerization of Lactones with a Fused Ring Leading to Semicrystalline Polyesters. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xing Yang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Wei Zhang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Hao-Yi Huang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Jiang Dai
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Meng-Yuan Wang
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Hua-Zhong Fan
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Zhongzheng Cai
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Qi Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
| | - Jian-Bo Zhu
- National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People’s Republic of China
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