1
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Kricheldorf HR, Weidner SM. Low molar mass cyclic poly(L-lactide)s: separate transesterification reactions of cycles and linear chains in the solid state. SOFT MATTER 2024; 20:6131-6139. [PMID: 39041173 DOI: 10.1039/d4sm00567h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
L-Lactide (LA) was polymerized with neat tin(II) 2-ethylhexanoate (SnOct2) in toluene at 115 °C at low concentration with variation of the LA/Cat ratio. Cyclic polylactides (cPLAs) with number average molecular weights (Mn) between 7000 and 17 000 were obtained. MALDI-TOF mass spectrometry also revealed the formation of a few percent of linear chains. Crystalline cPLAs with Mn around 9000 and 14 000 were annealed at 140 °C in the presence of ScOct2 or dibutyl-2-stanna-1,3-dithiolane (DSTL). Simultaneously, crystallites of extended linear chains and crystallites of extended cycles were formed regardless of the catalyst, indicating that transesterification reaction proceeded different for linear chains and for cycles, governed by thermodynamic control. The formation of extended chain crystallites with low dispersity indicates the existence of symproportionation of short and long chains. A complementary experiment was carried out with a PLA ethyl ester composed mainly of linear chains with a small fraction of cycles.
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Affiliation(s)
- Hans R Kricheldorf
- Universität Hamburg, Institut für Technische Chemie und Makromolekulare Chemie, Bundesstr. 45, D-20146 Hamburg, Germany.
| | - Steffen M Weidner
- BAM, Bundesanstalt für Materialforschung und -prüfung, Richard Willstätter Str. 11, D-12489, Berlin, Germany
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2
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Ahmad M, Grayson SM. Understanding zwitterionic ring-expansion polymerization through mass spectrometry. MASS SPECTROMETRY REVIEWS 2024. [PMID: 38556789 DOI: 10.1002/mas.21877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 01/28/2024] [Accepted: 03/07/2024] [Indexed: 04/02/2024]
Abstract
Zwitterionic ring-expansion polymerization (ZREP) is a polymerization method in which a cyclic monomer is converted into a cyclic polymer through a zwitterionic intermediate. In this review, we explored the ZREP of various cyclic polymers and how mass spectrometry assists in identifying the product architectures and understanding their intricate reaction mechanism. For the majority of polymers (from a few thousand to a few million Da) matrix-assisted laser desorption/ionization time-of-flight mass spectrometry is the most effective mass spectrometry technique to determine the true molecular weight (MW) of the resultant product, but only when the dispersity is low (approximately below 1.2). The key topics covered in this study were the ZREP of cyclic polyesters, cyclic polyamides, and cyclic ethers. In addition, this study also addresses a number of other preliminary topics, including the ZREP of cyclic polycarbonates, cyclic polysiloxanes, and cyclic poly(alkylene phosphates). The purity and efficiency of those syntheses largely depend on the catalyst. Among several catalysts, N-heterocyclic carbenes have exhibited high efficiency in the synthesis of cyclic polyesters and polyamides, whereas tris(pentafluorophenyl)borane [B(C6F5)3] is the most optimal catalyst for cyclic polyether synthesis.
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Affiliation(s)
- Mahi Ahmad
- Department of Chemistry, Tulane University, New Orleans, Louisiana, USA
| | - Scott M Grayson
- Department of Chemistry, Tulane University, New Orleans, Louisiana, USA
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3
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Yang PB, Davidson MG, Edler KJ, Leaman N, Bathke EK, McCormick SN, Matsarskaia O, Brown S. Comparison of Cyclic and Linear Poly(lactide)s Using Small-Angle Neutron Scattering. Macromolecules 2022; 55:11051-11058. [PMID: 36590371 PMCID: PMC9798859 DOI: 10.1021/acs.macromol.2c02020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/29/2022] [Indexed: 12/14/2022]
Abstract
Small-angle neutron scattering (SANS) experiments were conducted on cyclic and linear polymers of racemic and l-lactides (PLA) with the goal of comparing chain configurations, scaling, and effective polymer-solvent interactions of the two topologies in acetone-d 6 and THF-d 8. There are limited reports of SANS results on cyclic polymers due to the lack of substantial development in the field until recently. Now that pure, well-defined cyclic polymers are accessible, unanswered questions about their rheology and physical conformations can be better investigated. Previously reported SANS experiments have used cyclic and linear polystyrene samples; therefore, our work allowed for direct comparison using a contrasting (structurally and sterically) polymer. We compared SANS results of cyclic and linear PLA samples with various microstructures and molecular weights at two different temperatures, allowing for comparison with a wide range of variables. The results followed the trends of previous experiments, but much greater differences in the effective polymer-solvent interaction parameters between cyclic and linear forms of PLA were observed, implying that the small form factor and hydrogen bonding in PLA allowed for much more compact conformations in the cyclic form only. Also, the polymer microstructure was found to influence polymer-solvent interaction parameters substantially. These results illustrate how the difference in polymer-solvent interactions between cyclic and linear polymers can vary greatly depending on the polymer in question and the potential of neutron scattering as a tool for identification and characterization of the cyclic topology.
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Affiliation(s)
- Philip B. Yang
- ¶Institute
for Sustainability and †Department of Chemistry, University of
Bath, Claverton Down, BathBA2
7AY, United Kingdom,
| | - Matthew G. Davidson
- ¶Institute
for Sustainability and †Department of Chemistry, University of
Bath, Claverton Down, BathBA2
7AY, United Kingdom
| | - Karen J. Edler
- ¶Institute
for Sustainability and †Department of Chemistry, University of
Bath, Claverton Down, BathBA2
7AY, United Kingdom,Centre
for Analysis and Synthesis, Department of Chemistry, Lund University, SE-221
00Lund, Sweden,
| | - Niamh Leaman
- ¶Institute
for Sustainability and †Department of Chemistry, University of
Bath, Claverton Down, BathBA2
7AY, United Kingdom
| | - Elly K. Bathke
- ¶Institute
for Sustainability and †Department of Chemistry, University of
Bath, Claverton Down, BathBA2
7AY, United Kingdom
| | - Strachan N. McCormick
- ¶Institute
for Sustainability and †Department of Chemistry, University of
Bath, Claverton Down, BathBA2
7AY, United Kingdom
| | - Olga Matsarskaia
- Institut
Laue Langevin, 71 Av. Des Martyrs, 38000Grenoble, France
| | - Steven Brown
- Scott
Bader, Wollaston, WellingboroughNN29 7RJ, United Kingdom
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4
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Mao X, Xian J, Wang R, Han X, Pan X, Wu J. Synthesis of Linear to Cyclic Polylactide via a One-Pot Step-Wise Ring-Opening Polymerization and Back-Biting Reaction of Ring Closure Using Magnesium Complexes. Inorg Chem 2022; 61:10722-10730. [PMID: 35771955 DOI: 10.1021/acs.inorgchem.2c00935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The controllable synthesis of cyclic polylactide remains a challenging topic so far. In this work, a new strategy of one-pot step-wise ring-opening polymerization (ROP) followed by a back-biting reaction of ring closure was reported, in which one magnesium atrane-like complex {N,N-bis[3,5-di-cumyl-2-benzyloxy]-[2-(2-aminoethoxy)ethoxy]magnesium} was utilized to initiate the ROP of lactide using 4-dimethylaminopyridine as a co-catalyst; then, macrocyclic polylactides were liberated out via increasing temperature after complete depletion of the monomer in which a back-biting reaction was utilized as a ring-closure method. The living feature at the first ROP stage can be proved well by the controllable molecular weights ranging from 3.10 to 34.70 kDa and narrow molecular weight distributions of linear polylactides obtained after quenching the reaction. The final cyclic polylactides with molecular weights (vs polystyrene) ranging from 2.50 to 16.10 kDa can be achieved too after the back-biting reaction of ring closure. Although a shoulder peak at the gel permeation chromatography profile appears when the ratio of monomer:initiator is high up to 100:1 or 200:1, this system is suitable for the controllable syntheses of cyclic polylactides with desirable modest molecular weights.
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Affiliation(s)
- Xiaoyang Mao
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ji Xian
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Rui Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Xinning Han
- College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan 756000, People's Republic of China
| | - Xiaobo Pan
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jincai Wu
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People's Republic of China
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5
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Goonesinghe C, Jung HJ, Roshandel H, Diaz C, Baalbaki HA, Nyamayaro K, Ezhova M, Hosseini K, Mehrkhodavandi P. An Air Stable Cationic Indium Catalyst for Formation of High-Molecular-Weight Cyclic Poly(lactic acid). ACS Catal 2022. [DOI: 10.1021/acscatal.2c02118] [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)
- Chatura Goonesinghe
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hyuk-Joon Jung
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hootan Roshandel
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Carlos Diaz
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Hassan A. Baalbaki
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Kudzanai Nyamayaro
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Maria Ezhova
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Kimia Hosseini
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Parisa Mehrkhodavandi
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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6
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Siefker D, Chan BA, Zhang M, Nho JW, Zhang D. 1,1,3,3-Tetramethylguanidine-Mediated Zwitterionic Ring-Opening Polymerization of Sarcosine-Derived N-Thiocarboxyanhydride toward Well-Defined Polysarcosine. Macromolecules 2022; 55:2509-2516. [PMID: 35444344 PMCID: PMC9011146 DOI: 10.1021/acs.macromol.1c02472] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/16/2022] [Indexed: 11/29/2022]
Abstract
![]()
Zwitterionic ring-opening
polymerization (ZROP) of sarcosine-derived N-thiocarboxyanhydrides
(Me-NNTAs) can be induced
by using 1,1,3,3-tetramethylguanidine (TMG) initiators in CH2Cl2 at 25 °C, rapidly producing well-defined polysarcosine
polymers with controlled molecular weights (Mn = 1.9–37 kg/mol) and narrow molecular weight distributions
(Đ = 1.01–1.12). The reaction exhibits
characteristics of a living polymerization, evidenced by pseudo-first-order
polymerization kinetics, the linear increase of polymer molecular
weight (Mn) with conversion, and the successful
chain extension experiments. The polymerization is proposed to proceed
via propagating macro-zwitterions bearing a cationic 1,1,3,3-tetramethylguanidinium
and an anionic thiocarbamate chain end. The TMG not only initiates
the polymerization but also serves to stabilize the thiocarbamate
chain end where the monomer addition occurs. Because of the enhanced
hydrolytic stability of Me-NNTA, the polymerization can be conducted
without the rigorous exclusion of moisture, further enhancing the
appeal of the method to access well-defined polysarcosine.
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Affiliation(s)
- David Siefker
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Brandon A. Chan
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Meng Zhang
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Ju-Woo Nho
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Donghui Zhang
- Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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7
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Lewinski P, Kaluzynski K, Pretula J, Mielniczak G, Penczek S. Catalysis in polymerization of cyclic esters. Catalyst and initiator in one molecule. Polymerization of lactide. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Blaj DA, Balan-Porcarasu M, Petre BA, Harabagiu V, Peptu C. MALDI mass spectrometry monitoring of cyclodextrin-oligolactide derivatives synthesis. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Yang PB, Davidson MG, Edler KJ, Brown S. Synthesis, Properties, and Applications of Bio-Based Cyclic Aliphatic Polyesters. Biomacromolecules 2021; 22:3649-3667. [PMID: 34415743 DOI: 10.1021/acs.biomac.1c00638] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cyclic polymers have long been reported in the literature, but their development has often been stunted by synthetic difficulties such as the presence of linear contaminants. Research into the synthesis of these polymers has made great progress in the past decade, and this review covers the synthesis, properties, and applications of cyclic polymers, with an emphasis on bio-based aliphatic polyesters. Synthetic routes to cyclic polymers synthesized from bioderived monomers, alongside mechanistic descriptions for both ring closure and ring expansion polymerization approaches, are reviewed. The review also highlights some of the unique physical properties of cyclic polymers together with potential applications. The findings illustrate the substantial recent developments made in the syntheses of cyclic polymers, as well as the progress which can be made in the commercialization of bio-based polymers through the versatility this topology provides.
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Affiliation(s)
- Philip B Yang
- University of Bath, Claverton Down, Bath, BA2 7AY United Kingdom
| | | | - Karen J Edler
- University of Bath, Claverton Down, Bath, BA2 7AY United Kingdom
| | - Steven Brown
- Scott Bader, Wollaston, Wellingborough, NN29 7RJ, United Kingdom
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10
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Kerr RWF, Ewing PMDA, Raman SK, Smith AD, Williams CK, Arnold PL. Ultrarapid Cerium(III)–NHC Catalysts for High Molar Mass Cyclic Polylactide. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04858] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ryan W. F. Kerr
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, Edinburgh EH9 3FJ, U.K
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY16 9ST, U.K
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Paul M. D. A. Ewing
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, Edinburgh EH9 3FJ, U.K
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY16 9ST, U.K
| | - Sumesh K. Raman
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Andrew D. Smith
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews KY16 9ST, U.K
| | - Charlotte K. Williams
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Polly L. Arnold
- EaStCHEM School of Chemistry, University of Edinburgh, The King’s Buildings, Edinburgh EH9 3FJ, U.K
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11
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Wang TW, Golder MR. Advancing macromolecular hoop construction: recent developments in synthetic cyclic polymer chemistry. Polym Chem 2021. [DOI: 10.1039/d0py01655a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Synthetic methodology to access cyclic macromolecules continues to develop via two distinct mechanistic classes: ring-expansion of macrocyclic initiators and ring-closure of functionalized linear polymers.
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Affiliation(s)
- Teng-Wei Wang
- Department of Chemistry
- University of Washington
- Seattle
- USA
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12
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Kaluzynski K, Pretula J, Lewinski P, Kaźmierski S, Penczek S. Catalysis in polymerization of cyclic esters. Catalyst and initiator in one molecule. Polymerization of ε-caprolactone. J Catal 2020. [DOI: 10.1016/j.jcat.2020.09.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Meimoun J, Favrelle-Huret A, Bria M, Merle N, Stoclet G, De Winter J, Mincheva R, Raquez JM, Zinck P. Epimerization and chain scission of polylactides in the presence of an organic base, TBD. Polym Degrad Stab 2020. [DOI: 10.1016/j.polymdegradstab.2020.109188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Brissenden AJ, Amsden BG. Insights into the polymerization kinetics of thermoresponsive polytrimethylene carbonate bearing a methoxyethoxy side group. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | - Brian G. Amsden
- Department of Chemical Engineering Queen's University Kingston Ontario Canada
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15
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Romero‐Hernández JE, Cruz‐Rosado A, Vivaldo‐Lima E, Palacios‐Alquisira J, Zolotukhin MG. Analysis of the Competition between Cyclization and Linear Chain Growth in Kinetically Controlled A
2
+ B
2
Step‐Growth Polymerizations Using Modeling Tools. MACROMOL THEOR SIMUL 2020. [DOI: 10.1002/mats.202000050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Juan Enrique Romero‐Hernández
- Facultad de Química Departamento de Ingeniería Química Universidad Nacional Autónoma de México Ciudad de México 04510 México
| | - Alfredo Cruz‐Rosado
- Facultad de Química Departamento de Ingeniería Química Universidad Nacional Autónoma de México Ciudad de México 04510 México
| | - Eduardo Vivaldo‐Lima
- Facultad de Química Departamento de Ingeniería Química Universidad Nacional Autónoma de México Ciudad de México 04510 México
| | - Joaquín Palacios‐Alquisira
- Facultad de Química Departamento de Fisicoquímica Universidad Nacional Autónoma de México Ciudad de México 04510 México
| | - Mikhail G. Zolotukhin
- Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de México Ciudad de México 04510 México
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16
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Kricheldorf HR, Weidner SM. The Ring-Opening Polymerization-Polycondensation (ROPPOC) Approach to Cyclic Polymers. Macromol Rapid Commun 2020; 41:e2000152. [PMID: 32462747 DOI: 10.1002/marc.202000152] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/27/2020] [Indexed: 11/10/2022]
Abstract
A new concept called ring-opening polymerization-polycondensation (ROPPOC) is presented and discussed. This synthetic strategy is based on the intermediate formation of chains having two end groups that can react with each other. The ROPPOC syntheses are subdivided into three groups according to the nature of the chain ends: two ionic end groups, one ionic and one covalent chain end, and a combination of two reactive covalent end groups may be involved, depending on the catalyst. The usefulness for the preparation of cyclic polymers is discussed with a review of numerous previously published examples. These examples concern the following classes of cyclic polymers: polypeptides, polyamides, and polyesters, including polycarbonates and cyclic polysiloxanes. It is demonstrated that the results of certain ROPPOC syntheses are in contradiction to the Jacobson-Stockmayer theory. Finally, the usefulness of ROPPOCs for the detection of polydisperse catenanes is discussed.
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Affiliation(s)
- Hans R Kricheldorf
- Institut für Technische und Makromolekulare Chemie, Universität Hamburg, Bundesstrasse 45, Hamburg, D-20146, Germany
| | - Steffen M Weidner
- 6.3 Strukturanalytik, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstätter-Str. 11, Berlin, D-12489, Germany
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17
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High Molecular‐Weight Cyclic Polyesters from Solvent‐Free Ring‐Opening Polymerization of Lactones with a Pyridyl‐Urea/MTBD. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000075] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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18
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Kricheldorf HR, Weidner SM, Meyer A. High Tm poly(L-lactide)s via REP or ROPPOC of l-lactide. Polym Chem 2020. [DOI: 10.1039/c9py01908a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new kind of high melting (HTm) pol(l-lactide) was discovered when cyclic poly(l-lactide)s were prepared by ring-expansion polymerization with cyclic tin catalysts at 130–160 °C in bulk.
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Affiliation(s)
- Hans R. Kricheldorf
- Institut für Technische und Makromolekulare Chemie
- Universität Hamburg
- D-20146 Hamburg
- Germany
| | - Steffen M. Weidner
- BAM
- Federal Institute for Materials Research and Testing
- D-12489 Berlin
- Germany
| | - Andreas Meyer
- Institut für Physikalische Chemie
- Universität Hamburg
- D-20146 Hamburg
- Germany
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19
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Shakaroun RM, Jéhan P, Alaaeddine A, Carpentier JF, Guillaume SM. Organocatalyzed ring-opening polymerization (ROP) of functional β-lactones: new insights into the ROP mechanism and poly(hydroxyalkanoate)s (PHAs) macromolecular structure. Polym Chem 2020. [DOI: 10.1039/d0py00125b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The organocatalyzed ROP of some 4-alkoxymethylene-β-propiolactones (BPLORs) towards the formation of the corresponding poly(hydroxyalkanoate)s (PHAs; PBPLORs) is investigated simply using basic organocatalysts of the guanidine (TBD), amidine (DBU) or phosphazene (BEMP) type.
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Affiliation(s)
- Rama M. Shakaroun
- Univ. Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- F-35042 Rennes
- France
| | - Philippe Jéhan
- Centre Régional de Mesures Physiques de l'Ouest-CRMPO
- ScanMAT UMS 2001
- Université de Rennes 1
- France
| | - Ali Alaaeddine
- Univ. Libanaise
- Campus Universitaire Rafic Hariri Hadath
- Faculté des Sciences
- Laboratoire de Chimie Médicinale et des Produits Naturels
- Beirut
| | | | - Sophie M. Guillaume
- Univ. Rennes
- CNRS
- Institut des Sciences Chimiques de Rennes
- F-35042 Rennes
- France
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20
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Naolou T, Lendlein A, Neffe AT. Amides as Non-polymerizable Catalytic Adjuncts Enable the Ring-Opening Polymerization of Lactide With Ferrous Acetate Under Mild Conditions. Front Chem 2019; 7:346. [PMID: 31165060 PMCID: PMC6535497 DOI: 10.3389/fchem.2019.00346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/26/2019] [Indexed: 11/13/2022] Open
Abstract
Sn-based catalysts are effective in the ring-opening polymerization (ROP) but are toxic. Fe(OAc)2 used as an alternative catalyst is suitable for the ROP of lactide only at higher temperatures (>170°C), associated with racemization. In the ROP of ester and amide group containing morpholinediones with Fe(OAc)2 to polydepsipeptides at 135°C, ester bonds were selectively opened. Here, it was hypothesized that ROP of lactones is possible with Fe(OAc)2 when amides are present in the reactions mixture as Fe-ligands could increase the solubility and activity of the metal catalytic center. The ROP of lactide in the melt with Fe(OAc)2 is possible at temperatures as low as 105°C, in the presence of N-ethylacetamide or N-methylbenzamide as non-polymerizable catalytic adjuncts (NPCA), with high conversion (up to 99 mol%) and yield (up to 88 mol%). Polydispersities of polylactide decreased with decreasing reaction temperature to ≤ 1.1. NMR as well as polarimetric studies showed that no racemization occurred at reaction temperatures ≤145°C. A kinetic study demonstrated a living chain-growth mechanism. MALDI analysis revealed that no side reactions (e.g., cyclization) occurred, though transesterification took place.
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Affiliation(s)
- Toufik Naolou
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Axel T Neffe
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
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21
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Shaik M, Peterson J, Du G. Cyclic and Linear Polyhydroxylbutyrates from Ring-Opening Polymerization of β-Butyrolactone with Amido-Oxazolinate Zinc Catalysts. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02096] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Muneer Shaik
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
| | - Jhaiquashia Peterson
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
| | - Guodong Du
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
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22
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High molar mass cyclic poly(l-lactide) via ring-expansion polymerization with cyclic dibutyltin bisphenoxides. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.05.036] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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23
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Mase N, Moniruzzaman, Yamamoto S, Nakaya Y, Sato K, Narumi T. Organocatalytic Stereoselective Cyclic Polylactide Synthesis in Supercritical Carbon Dioxide under Plasticizing Conditions. Polymers (Basel) 2018; 10:E713. [PMID: 30960638 PMCID: PMC6404224 DOI: 10.3390/polym10070713] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 06/23/2018] [Accepted: 06/26/2018] [Indexed: 11/16/2022] Open
Abstract
Cyclic polylactide (cPLA) is a structural isomer of linear polylactide (PLA) although it possesses unique functionalities in comparison to its linear counterpart. Hitherto, the control of stereochemical purity in conventional cPLA synthesis has not been achieved. In this study, highly stereochemically pure cPLA was synthesized in the absence of a metal catalyst and organic solvent, which required high consumption of the residual monomer. The synthesis was conducted in supercritical carbon dioxide under CO₂ plasticizing polymerization conditions in the presence of an organocatalyst and thiourea additives. In comparison with the stereocomplexes synthesized through conventional methods, cPLA from l-lactide (cPLLA) and cPLA from d-lactide (cPDLA) were synthesized with higher stereochemical purity and improved thermal stability. Moreover, the method presented herein is environmentally friendly and thus, applicable on an industrial level.
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Affiliation(s)
- Nobuyuki Mase
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan; (M.); (S.Y.); (Y.N.); (K.S.); (T.N.)
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan
- Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan
| | - Moniruzzaman
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan; (M.); (S.Y.); (Y.N.); (K.S.); (T.N.)
| | - Shoji Yamamoto
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan; (M.); (S.Y.); (Y.N.); (K.S.); (T.N.)
| | - Yoshitaka Nakaya
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan; (M.); (S.Y.); (Y.N.); (K.S.); (T.N.)
| | - Kohei Sato
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan; (M.); (S.Y.); (Y.N.); (K.S.); (T.N.)
| | - Tetsuo Narumi
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan; (M.); (S.Y.); (Y.N.); (K.S.); (T.N.)
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan
- Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan
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24
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Xu D, Ni CY, Zhu YL, Lu ZY, Xue YH, Liu H. Kinetic step-growth polymerization: A dissipative particle dynamics simulation study. J Chem Phys 2018; 148:024901. [DOI: 10.1063/1.4999050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Dan Xu
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
| | - Chun-Yan Ni
- Department of Anesthesiology, Cancer Hospital of Jilin Province, Huguang Road, No. 1018, Changchun 130012, China
| | - You-Liang Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
| | - Yao-Hong Xue
- School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China
| | - Hong Liu
- State Key Laboratory of Supramolecular Structure and Materials, Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität, Darmstadt 64287, Germany
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25
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Kricheldorf HR, Weidner SM. Ring-expansion polymerization of meso-lactide catalyzed by dibutyltin derivatives. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.28948] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hans Rytger Kricheldorf
- Institut für Technische und Makromolekulare Chemie der Universität, Bundesstr. 45; Hamburg D-20146 Germany
| | - Steffen M. Weidner
- Federal Institute of Materials Research and Testing - BAM, Richard Willstätter Str. 11; Berlin D-2489 Germany
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26
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Luo Z, Chaemchuen S, Zhou K, Verpoort F. Ring-Opening Polymerization of l-Lactide to Cyclic Poly(Lactide) by Zeolitic Imidazole Framework ZIF-8 Catalyst. CHEMSUSCHEM 2017; 10:4135-4139. [PMID: 28925025 DOI: 10.1002/cssc.201701438] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/17/2017] [Indexed: 06/07/2023]
Abstract
The catalytic activity of ZIF-8 in the ring-opening polymerization of l-lactide without solvents or cocatalysts is presented for the first time. Two different synthetic strategies have been applied for synthesizing ZIF-8, either under solvothermal condition or by spray-drying procedure. Their catalytic activities are found to be correlating with the presence of open active sites in ZIF-8 structure. The structural defects that afford active acid and basic sites are supposed to cooperatively catalyze the reaction. ZIF-8 assembled by spray-drying technique, displays a superior catalytic activity at temperature of 160 °C, leading to the formation of high molecular weight cyclic polylactide. The ZIF-8 catalysts could be recycled and reused without any significant loss of catalytic activity.
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Affiliation(s)
- Zhixiong Luo
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Center for Chemical and Material Engineering, Wuhan University of Technology, Wuhan, P. R. China
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070, P .R. China
- Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Ghent, Belgium
| | - Somboon Chaemchuen
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Center for Chemical and Material Engineering, Wuhan University of Technology, Wuhan, P. R. China
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070, P .R. China
| | - Kui Zhou
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Center for Chemical and Material Engineering, Wuhan University of Technology, Wuhan, P. R. China
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Francis Verpoort
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Center for Chemical and Material Engineering, Wuhan University of Technology, Wuhan, P. R. China
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070, P .R. China
- Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, 9000, Ghent, Belgium
- National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk, 634050, Russian Federation
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27
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28
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Mezzasalma L, Dove AP, Coulembier O. Organocatalytic ring-opening polymerization of l-lactide in bulk: A long standing challenge. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.05.013] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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29
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Kricheldorf HR, Weidner SM, Scheliga F. Cyclic Poly(l
-lactide) via Ring-Expansion Polymerization by Means of Dibutyltin 4-Tert
-Butylcatecholate. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700274] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hans R. Kricheldorf
- Institute für Technische und Makromolekulare Chemie; Bundesstraße 45 20146 Hamburg Germany
| | - Steffen M. Weidner
- BAM; Federal Institute of Materials Research and Testing; Richard-Willstätter-Straße 11 12489 Berlin Germany
| | - Felix Scheliga
- Institute für Technische und Makromolekulare Chemie; Bundesstraße 45 20146 Hamburg Germany
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30
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Kricheldorf HR, Weidner SM, Scheliga F. Cyclic polylactides via simultaneous ring-opening polymerization and polycondensation catalyzed by dibutyltin mercaptides. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28762] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hans R. Kricheldorf
- Universität Hamburg, Institut für Technische und Makromolekulare Chemie; Hamburg D-20146 Germany
| | - Steffen M. Weidner
- Bundesanstalt für Materialforschung und -prüfung (BAM); Berlin D-12489 Germany
| | - Felix Scheliga
- Universität Hamburg, Institut für Technische und Makromolekulare Chemie; Hamburg D-20146 Germany
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31
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l-lactide polymerization – living and controlled – catalyzed by initiators: Hydroxyalkylated organic bases. POLYMER 2017. [DOI: 10.1016/j.polymer.2016.11.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Kricheldorf HR, Weidner SM, Scheliga F. Cyclic poly(l-lactide)s via ring-expansion polymerizations catalysed by 2,2-dibutyl-2-stanna-1,3-dithiolane. Polym Chem 2017. [DOI: 10.1039/c6py02166b] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
l-Lactide was polymerized in bulk at 120 or 160 °C with a cyclic dibutyltin catalyst derived from 1,2-dimercaptoethane.
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Affiliation(s)
- H. R. Kricheldorf
- Institut für Technische und Makromolekulare Chemie
- D-20146 Hamburg
- Germany
| | - S. M. Weidner
- BAM
- Federal Institute of Materials Research and Testing
- D-12489 Berlin
- Germany
| | - F. Scheliga
- Institut für Technische und Makromolekulare Chemie
- D-20146 Hamburg
- Germany
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33
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34
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Josse T, De Winter J, Gerbaux P, Coulembier O. Synthese cyclischer Polymere durch Ringschluss-Strategien. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601677] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thomas Josse
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons; Place du Parc, 20 7000 Mons Belgien
- Organic Synthesis and Mass Spectrometry Laboratory (S MOS); University of Mons; Place du Parc, 20 7000 Mons Belgien
| | - Julien De Winter
- Organic Synthesis and Mass Spectrometry Laboratory (S MOS); University of Mons; Place du Parc, 20 7000 Mons Belgien
| | - Pascal Gerbaux
- Organic Synthesis and Mass Spectrometry Laboratory (S MOS); University of Mons; Place du Parc, 20 7000 Mons Belgien
| | - Olivier Coulembier
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons; Place du Parc, 20 7000 Mons Belgien
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35
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Josse T, De Winter J, Gerbaux P, Coulembier O. Cyclic Polymers by Ring-Closure Strategies. Angew Chem Int Ed Engl 2016; 55:13944-13958. [DOI: 10.1002/anie.201601677] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 05/01/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Thomas Josse
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons; Place du Parc, 20 7000 Mons Belgium
- Organic Synthesis and Mass Spectrometry Laboratory (S MOS); University of Mons; Place du Parc, 20 7000 Mons Belgium
| | - Julien De Winter
- Organic Synthesis and Mass Spectrometry Laboratory (S MOS); University of Mons; Place du Parc, 20 7000 Mons Belgium
| | - Pascal Gerbaux
- Organic Synthesis and Mass Spectrometry Laboratory (S MOS); University of Mons; Place du Parc, 20 7000 Mons Belgium
| | - Olivier Coulembier
- Laboratory of Polymeric and Composite Materials (LPCM); Center of Innovation and Research in Materials and Polymers (CIRMAP); University of Mons; Place du Parc, 20 7000 Mons Belgium
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36
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Li XQ, Wang B, Ji HY, Li YS. Insights into the mechanism for ring-opening polymerization of lactide catalyzed by Zn(C6F5)2/organic superbase Lewis pairs. Catal Sci Technol 2016. [DOI: 10.1039/c6cy01587e] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A plausible mechanism for ring-opening polymerization of lactide catalyzed by Zn(C6F5)2-based Lewis pairs was proposed based on in situ NMR and MALDI-TOF MS analyses. Several experimental results show very good consistency with the proposed mechanism.
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Affiliation(s)
- Xiao-Qing Li
- Tianjin Key Lab of Composite & Functional Materials
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - Bin Wang
- Tianjin Key Lab of Composite & Functional Materials
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - He-Yuan Ji
- Tianjin Key Lab of Composite & Functional Materials
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
| | - Yue-Sheng Li
- Tianjin Key Lab of Composite & Functional Materials
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
- China
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37
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Nogueira G, Favrelle A, Bria M, Prates Ramalho JP, Mendes PJ, Valente A, Zinck P. Adenine as an organocatalyst for the ring-opening polymerization of lactide: scope, mechanism and access to adenine-functionalized polylactide. REACT CHEM ENG 2016. [DOI: 10.1039/c6re00061d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Straightforward access to a bioconjugate is reported via adenine initiated ring-opening polymerization without a co-catalyst. The mechanism is elucidated by DFT.
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Affiliation(s)
- Guilherme Nogueira
- Unité de Catalyse et Chimie du Solide (UCCS)
- UMR CNRS 8181, ENSCL
- Université de Lille
- F-59000 Lille
- France
| | - Audrey Favrelle
- Unité de Catalyse et Chimie du Solide (UCCS)
- UMR CNRS 8181, ENSCL
- Université de Lille
- F-59000 Lille
- France
| | - Marc Bria
- Centre Commun de Mesure RMN
- Université de Lille
- F-59000 Lille
- France
| | - João P. Prates Ramalho
- Departamento de Química and Centro de Química de Évora
- Escola de Ciências e Tecnologia
- Universidade de Évora
- 7000-671 Évora
- Portugal
| | - Paulo J. Mendes
- Departamento de Química and Centro de Química de Évora
- Escola de Ciências e Tecnologia
- Universidade de Évora
- 7000-671 Évora
- Portugal
| | - Andreia Valente
- Centro de Química Estrutural
- Faculdade de Ciências da Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
| | - Philippe Zinck
- Unité de Catalyse et Chimie du Solide (UCCS)
- UMR CNRS 8181, ENSCL
- Université de Lille
- F-59000 Lille
- France
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38
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Bednarek M, Basko M, Biedron T, Wojtczak E, Michalski A. Polymerization of lactide initiated by primary amines and catalyzed by a protic acid. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.08.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Asenjo-Sanz I, Veloso A, Miranda JI, Alegría A, Pomposo JA, Barroso-Bujans F. Zwitterionic Ring-Opening Copolymerization of Tetrahydrofuran and Glycidyl Phenyl Ether with B(C6F5)3. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00096] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Isabel Asenjo-Sanz
- Centro
de Física de Materiales (CSIC-UPV/EHU)-MPC, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
| | | | | | - Angel Alegría
- Centro
de Física de Materiales (CSIC-UPV/EHU)-MPC, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Departamento de Física de Materiales, University of the Basque Country UPV/EHU, Apartado 1072, San Sebastian 20080, Spain
| | - José A. Pomposo
- Centro
de Física de Materiales (CSIC-UPV/EHU)-MPC, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Departamento de Física de Materiales, University of the Basque Country UPV/EHU, Apartado 1072, San Sebastian 20080, Spain
- IKERBASQUE-Basque Foundation
for Science, María Díaz
de Haro 3, Bilbao 48013, Spain
| | - Fabienne Barroso-Bujans
- Centro
de Física de Materiales (CSIC-UPV/EHU)-MPC, Paseo Manuel Lardizábal 5, San Sebastian 20018, Spain
- Donostia International Physics Center (DIPC), Paseo Manuel Lardizábal 4, San Sebastian 20018, Spain
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40
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Wongmahasirikun P, Prom-on P, Sangtrirutnugul P, Kongsaeree P, Phomphrai K. Synthesis of cyclic polyesters: effects of alkoxy side chains in salicylaldiminato tin(ii) complexes. Dalton Trans 2015; 44:12357-64. [DOI: 10.1039/c5dt00139k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new salicylaldiminato tin(ii) catalyst system having alkoxy side chains has been developed and shown to effectively polymerize l-lactide and ε-caprolactone giving cyclic PLA and cyclic PCL, respectively.
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Affiliation(s)
- Phonpimon Wongmahasirikun
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Paweenuch Prom-on
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Preeyanuch Sangtrirutnugul
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Palangpon Kongsaeree
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Khamphee Phomphrai
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
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41
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Zhang X, Waymouth RM. Zwitterionic Ring Opening Polymerization with Isothioureas. ACS Macro Lett 2014; 3:1024-1028. [PMID: 35610786 DOI: 10.1021/mz500525n] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Bicyclic isothioureas 1 and 2 mediate controlled ring opening polymerizations (ROP) of lactides in the absence of protic initiators to afford high molecular weight polylactides (PLA) with narrow polydispersities. The cyclic structure of the resulting PLA was determined by dilute solution viscosity measurement and MALDI-TOF mass spectrometry. Compared to DBU initiator, isothioureas are more selective for producing cyclic PLA without appreciable linear contaminants. Mechanistic studies involving acyl amidinium support our hypothesis that DBU-initiated ZROP generates linear chains from a ketene aminal intermediate.
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Affiliation(s)
- Xiangyi Zhang
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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42
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Kryuchkov MA, Detrembleur C, Bazuin CG. Linear amphiphilic diblock copolymers of lactide and 2-dimethylaminoethyl methacrylate using bifunctional-initiator and one-pot approaches. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.04.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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43
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Brown HA, Xiong S, Medvedev GA, Chang YA, Abu-Omar MM, Caruthers JM, Waymouth RM. Zwitterionic Ring-Opening Polymerization: Models for Kinetics of Cyclic Poly(caprolactone) Synthesis. Macromolecules 2014. [DOI: 10.1021/ma500395j] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hayley A. Brown
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Silei Xiong
- Forney
Hall of Chemical Engineering, School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Grigori A. Medvedev
- Forney
Hall of Chemical Engineering, School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Young A. Chang
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Mahdi M. Abu-Omar
- Forney
Hall of Chemical Engineering, School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
- Brown
Laboratory, Department of Chemistry, Purdue University, 560 Oval
Drive, West Lafayette, Indiana 47907, United States
| | - James M. Caruthers
- Forney
Hall of Chemical Engineering, School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Robert M. Waymouth
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
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44
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Asenjo-Sanz I, Veloso A, Miranda JI, Pomposo JA, Barroso-Bujans F. Zwitterionic polymerization of glycidyl monomers to cyclic polyethers with B(C6F5)3. Polym Chem 2014. [DOI: 10.1039/c4py00574k] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glycidyl monomers react with B(C6F5)3 to generate cyclic polyethers decorated with functional groups.
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Affiliation(s)
- Isabel Asenjo-Sanz
- Centro de Física de Materiales CSIC-UPV/EHU
- MPC
- 20018 San Sebastian, Spain
| | - Antonio Veloso
- POLYMAT
- Universidad del País Vasco
- UPV/EHU
- 20018 San Sebastian, Spain
| | - José I. Miranda
- SGIKer
- NMR Service
- Universidad del País Vasco
- UPV/EHU
- 20018 San Sebastian, Spain
| | - José A. Pomposo
- Centro de Física de Materiales CSIC-UPV/EHU
- MPC
- 20018 San Sebastian, Spain
- IKERBASQUE-Basque Foundation for Science
- Bilbao, Spain
| | - Fabienne Barroso-Bujans
- Centro de Física de Materiales CSIC-UPV/EHU
- MPC
- 20018 San Sebastian, Spain
- Donostia International Physics Center (DIPC)
- 20018 San Sebastian, Spain
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45
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Kadota J, Pavlović D, Hirano H, Okada A, Agari Y, Bibal B, Deffieux A, Peruch F. Controlled bulk polymerization of l-lactide and lactones by dual activation with organo-catalytic systems. RSC Adv 2014. [DOI: 10.1039/c4ra01239a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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46
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Brown HA, Waymouth RM. Zwitterionic ring-opening polymerization for the synthesis of high molecular weight cyclic polymers. Acc Chem Res 2013; 46:2585-96. [PMID: 23789724 DOI: 10.1021/ar400072z] [Citation(s) in RCA: 189] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cyclic polymers are an intriguing class of macromolecules. Because of the constraints of the cyclic topology and the absence of chain ends, the properties of these molecules differ from those of linear polymers in ways that remain poorly understood. Cyclic polymers present formidable synthetic challenges because the entropic penalty of coupling the chain ends grows exponentially with increasing molecular weight. In this Account, we describe recent progress in the application of zwitterionic ring-opening polymerization (ZROP) as a strategy for the synthesis of high molecular weight, cyclic polymers. Zwitterionic ring-opening polymerization involves the addition of neutral organic nucleophiles to strained heterocyclic monomers; under appropriate conditions, cyclization of the resultant macrozwitterions generates cyclic macromolecules. We discuss the mechanistic and kinetic features of these zwitterionic ring-opening reactions and the conditions that influence the efficiency of the initiation, propagation, and cyclization to generate high molecular weight cyclic polymers. N-Heterocyclic carbenes (NHC) are potent nucleophiles and relatively poor leaving groups, two features that are important for the generation of high molecular weight polymers. Investigations of the nature of the monomer and nucleophile have helped researchers understand the factors that govern the reactivity of these systems and their impact on the molecular weight and molecular weight distributions of the resulting cyclic polymers. We focus primarily on ZROP mediated by N-heterocyclic carbene nucleophiles but also discuss zwitterionic polymerizations with amidine, pyridine, and imidazole nucleophiles. The ZROP of N-carboxyanhydrides with N-hetereocyclic carbenes generates a family of functionalized cyclic polypeptoids. We can synthesize gradient lactone copolymers by exploiting differences in relative reactivity present in ZROP that differ from those of traditional metal-mediated polymerizations. These new synthetic methods have allowed us to investigate the influence of topology on the crystallization behavior, stereocomplexation, and solution properties of cyclic macromolecules.
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Affiliation(s)
- Hayley A. Brown
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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47
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Reisberg SH, Hurley HJ, Mathers RT, Tanski JM, Getzler YDYL. Lactide Cyclopolymerization Kinetics, X-ray Structure, and Solution Dynamics of (tBu-SalAmEE)Al and a Cautionary Tale Of Polymetalate Formation. Macromolecules 2013. [DOI: 10.1021/ma400046x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | - Harry J. Hurley
- Department
of Chemistry, Kenyon College, Gambier,
Ohio 43022, United States
| | - Robert T. Mathers
- Deparment of Chemistry, The Pennsylvania State University, New Kensington,
Pennsylvania 15068, United States
| | - Joseph M. Tanski
- Department of Chemistry, Vassar College, 124 Raymond Avenue, Box 601, Poughkeepsie,
New York 12604, United States
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48
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Brown HA, De Crisci AG, Hedrick JL, Waymouth RM. Amidine-Mediated Zwitterionic Polymerization of Lactide. ACS Macro Lett 2012; 1:1113-1115. [PMID: 35607177 DOI: 10.1021/mz300276u] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The ring-opening polymerization (ROP) of lactide with DBU (1,8-diazabicyclo[5.4.0] undec-7-ene) is described. Room temperature polymerization using the neutral amine catalyst DBU in the absence of any other initiator produces polymers with narrow polydispersities and shows a linear relationship between molecular weight and conversion. The resulting polymers were characterized and determined to be cyclic. DFT calculations support a mechanistic hypothesis involving a zwitterionic acyl amidinium intermediate.
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Affiliation(s)
- Hayley A. Brown
- Department of Chemistry, Stanford University, Stanford, California,
94305-5080, United States
| | - Antonio G. De Crisci
- Department of Chemistry, Stanford University, Stanford, California,
94305-5080, United States
| | - James L. Hedrick
- IBM Almaden Research Center, 650 Harry Road, California 95120, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, California,
94305-5080, United States
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49
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Kricheldorf HR, Weidner SM, Scheliga F, Lahcini M. Poly(ϵ-caprolactone) by Combined Ring-Opening Polymerization and Polycondensation. MACROMOL CHEM PHYS 2012. [DOI: 10.1002/macp.201200061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Weil J, Mathers RT, Getzler YDYL. Lactide Cyclopolymerization by an Alumatrane-Inspired Catalyst. Macromolecules 2012. [DOI: 10.1021/ma201960p] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jonathan Weil
- Department
of Chemistry, Kenyon College, Gambier,
Ohio 43022, United States
| | - Robert T. Mathers
- Department of Chemistry, The Pennsylvania State University, New Kensington,
Pennsylvania 15068, United States
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