1
|
Li B, Hu C, Yang Z, Pang X, Chen X. Bimetallic Manganese Catalysts: A Route to Controlled and Switchable Polymerization of Lactones. Chemistry 2024; 30:e202302884. [PMID: 37814820 DOI: 10.1002/chem.202302884] [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: 09/04/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/11/2023]
Abstract
The sustainable solution to the environmental problem of polymeric materials calls for efficient and well-controlled ring-opening polymerization catalytic systems. Inspired by the highly reactive and stereospecific bimetallic catalysts, three kinds of bimetallic Salen-Mn catalysts supported by biaryl linking moieties are synthesized and applied to polymerization catalysis of lactide (LA) and ϵ-caprolactone (ϵ-CL) in this work. The polymerization is initiated in situ by the ring-opening of epoxide compounds, in which the ionic cocatalyst could accelerate the reaction process. The Mn-Mn coordination effect contributes to the higher activity and iso-selectivity towards LA compared to the mononuclear Salen-Mn catalyst. The reactivity and stereoselectivity are determined by the conformation of catalysts, specifically the Mn-Mn separation and dihedral angle. Finally, the CO2 -controlled switchable polymerizations are carried out with LA and ϵ-CL. The reversibility of the on-off switching operation is influenced by the combination between CO2 molecules and active species. The success in binuclear Salen-Mn catalysts not only expands the range of bimetallic catalyst analogues but also claims the promising potential of Mn-based catalysts in practical and theoretical research.
Collapse
Affiliation(s)
- Bokun Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Chenyang Hu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Zhenjie Yang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Xuan Pang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| |
Collapse
|
2
|
Wu Y, Si H, Yu X, Fu F, Wang Z, Yao J, Liu X. Enhancing the solubility and antimicrobial activity of cellulose through esterification modification using amino acid hydrochlorides. Int J Biol Macromol 2023; 226:793-802. [PMID: 36526062 DOI: 10.1016/j.ijbiomac.2022.12.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 11/22/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
Most amino acid molecules have good water solubility and are rich in functional groups, which makes them a promising derivatizing agent for cellulose. However, self-condensation of amino acids and low reaction efficiency always happen during esterification. Here, amino acid hydrochloride ([AA]Cl) is selected as raw material to synthesize cellulose amino acid ester (CAE). Based on TG-MS coupling technology, a significantly faster reaction rate of [AA]Cl compared to raw amino acid can be observed visually. CAE with the degree of substitution 0.412-0.516 is facilely synthesized under 130-170 °C for 10-50 min. Moreover, the effects of amounts of [AA]Cl agent, temperature, and time on the esterification are studied. The CAE can be well dissolved in 7 wt% NaOH aq., resulting in a 7.5 wt% dope. The rheological test of the dope demonstrated a shear-thinning behavior for Newtonian-like fluid, and a high gel temperature (41.7 °C). Further, the synthesized products show distinct antibacterial activity and the bacteriostatic reduction rate against E. coli can reach 99.5 %.
Collapse
Affiliation(s)
- Yang Wu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Hongkuo Si
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiaodong Yu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Feiya Fu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Zongqian Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China.
| | - Juming Yao
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiangdong Liu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| |
Collapse
|
3
|
Zhang X, Sun P, Jiang Y, Liao S. Organocatalytic Ring-Opening Polymerization of ϵ-Caprolactone with Phosphoramidimidates (PADIs) as a Bifunctional Brønsted Acid Catalyst. Chem Asian J 2023; 18:e202201127. [PMID: 36453087 DOI: 10.1002/asia.202201127] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022]
Abstract
In this study, an organocatalytic ring-opening polymerization (ROP) of ϵ-caprolactone (ϵ-CL) has been developed by employing PADIs as a novel and efficient acid/base bifunctional organocatalyst, which could afford metal-free poly(ϵ-caprolactone) with predictable molecular weight and narrow dispersity at a low catalyst loading under mild conditions. NMR and kinetic studies indicate that the ring-opening polymerizations of lactones catalyzed by PADIs proceed in a living and well controlled manner. Moreover, this organic Brønsted acid catalytic system could allow the synthesis of PCL with molecular weight above 60 kg/mol, as well as well-defined star polymers.
Collapse
Affiliation(s)
- Xun Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University) College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.,Department State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry Chinese Academy of Sciences, Lingling Lu, Shanghai, 200032, P. R. China
| | - Pan Sun
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University) College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yu Jiang
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University) College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Saihu Liao
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University) College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.,College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| |
Collapse
|
4
|
DFT Investigations on the Ring-Opening Polymerization of Trimethylene Carbonate Catalysed by Heterocyclic Nitrogen Bases. Catalysts 2022. [DOI: 10.3390/catal12101280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Organocatalysts for polymerization have known a huge interest over the last two decades. Among them, heterocyclic nitrogen bases are widely used to catalyse the ring-opening polymerization (ROP) of heterocycles such as cyclic carbonates. We have investigated the ring-opening polymerization of trimethylene carbonate (TMC) catalysed by DMAP (4-dimethylaminopyridine) and TBD (1,5,7-triazabicyclo[4.4.0]dec-5-ene) as case studies in the presence of methanol as co-initiator by Density Functional Theory (DFT). A dual mechanism based on H-bond activation of the carbonyl moieties of the monomer and a basic activation of the alcohol co-initiator has been shown to occur more preferentially than a direct nucleophilic attack of the carbonate monomer by the heterocyclic nitrogen catalyst. The rate-determining step of the mechanism is the ring opening of the TMC molecule, which is slightly higher than the nucleophilic attack of the TMC carbonyl by the activated alcohol. The calculations also indicate TBD as a more efficient catalyst than DMAP. The higher energy barrier found for DMAP vs. TBD, 23.7 vs. 11.3 kcal·mol−1, is corroborated experimentally showing a higher reactivity for the latter.
Collapse
|
5
|
Peptu C, Blaj DA, Balan-Porcarasu M, Rydz J. Cyclodextrin-Oligocaprolactone Derivatives-Synthesis and Advanced Structural Characterization by MALDI Mass Spectrometry. Polymers (Basel) 2022; 14:1436. [PMID: 35406308 PMCID: PMC9003485 DOI: 10.3390/polym14071436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 11/16/2022] Open
Abstract
Cyclodextrins have previously been proven to be active in the catalysis of cyclic ester ring-opening reactions, hypothetically in a similar way to lipase-catalyzed reactions. However, the way they act remains unclear. Here, we focus on β-cyclodextrin's involvement in the synthesis and characterization of β-cyclodextrin-oligocaprolactone (CDCL) products obtained via the organo-catalyzed ring-opening of ε-caprolactone. Previously, bulk or supercritical carbon dioxide polymerizations has led to inhomogeneous products. Our approach consists of solution polymerization (dimethyl sulfoxide and dimethylformamide) to obtain homogeneous CDCL derivatives with four monomer units on average. Oligomerization kinetics, performed by a matrix-assisted laser desorption ionization mass spectrometry (MALDI MS) optimized method in tandem with 1H NMR, revealed that monomer conversion occurs in two stages: first, the monomer is rapidly attached to the secondary OH groups of β-cyclodextrin and, secondly, the monomer conversion is slower with attachment to the primary OH groups. MALDI MS was further employed for the measurement of the ring-opening kinetics to establish the influence of the solvents as well as the effect of organocatalysts (4-dimethylaminopyridine and (-)-sparteine). Additionally, the mass spectrometry structural evaluation was further enhanced by fragmentation studies which confirmed the attachment of oligoesters to the cyclodextrin and the cleavage of dimethylformamide amide bonds during the ring-opening process.
Collapse
Affiliation(s)
- Cristian Peptu
- Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (D.-A.B.); (M.B.-P.)
- Polish-Romanian Laboratory ADVAPOL, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland and Aleea Grigore Ghica Voda, 41A, 700487 Iasi, Romania
| | - Diana-Andreea Blaj
- Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (D.-A.B.); (M.B.-P.)
| | - Mihaela Balan-Porcarasu
- Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (D.-A.B.); (M.B.-P.)
| | - Joanna Rydz
- Polish-Romanian Laboratory ADVAPOL, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland and Aleea Grigore Ghica Voda, 41A, 700487 Iasi, Romania
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Skłodowska 34, 41-819 Zabrze, Poland
| |
Collapse
|
6
|
Xu J, Wang X, Liu J, Feng X, Gnanou Y, Hadjichristidis N. Ionic H-bonding organocatalysts for the ring-opening polymerization of cyclic esters and cyclic carbonates. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2021.101484] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
7
|
Li C, Dang YF, Wang B, Pan L, Li YS. Constructing ABA- and ABCBA-Type Multiblock Copolyesters with Structural Diversity by Organocatalytic Self-Switchable Copolymerization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00767] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chen Li
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yan-Feng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Bin Wang
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Li Pan
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yue-Sheng Li
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| |
Collapse
|
8
|
Han S, Yao S, Meng W, Yang J. Rapid, controlled ring-opening polymerization of salicylic acid o-carboxyanhydride for poly(salicylate) synthesis. Polym Chem 2021. [DOI: 10.1039/d1py01309b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fast synthesis pathway of poly(salicylate) in mild conditions was explored, in which the combination of Lewis base and alcohol enables salicylic acid o-carboxyanhydride polymerize in seconds to afford well-defined hompolymers with high Tg.
Collapse
Affiliation(s)
- Song Han
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shiman Yao
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| |
Collapse
|
9
|
Wang J, Tao Y. Synthesis of Sustainable Polyesters via Organocatalytic Ring-Opening Polymerization of O-carboxyanhydrides: Advances and Perspectives. Macromol Rapid Commun 2020; 42:e2000535. [PMID: 33241601 DOI: 10.1002/marc.202000535] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/26/2020] [Indexed: 11/06/2022]
Abstract
Sustainable polyesters can be furnished via ring-opening polymerization (ROP) of O-carboxyanhydrides (OCAs). Various catalysts, especially metal-based catalysts, are devised to achieve controlled ROP of OCAs. In the following mini review, the recent progress on the organocatalytic ROP of OCAs, including the usage of thiourea-based bifunctional single-molecule organocatalysts for eliminating epimerization in OCAs polymerization is summarized. Moreover, the future development of the organocatalytic ROP of OCAs for the synthesis of sustainable polyesters will be discussed.
Collapse
Affiliation(s)
- Jianqun Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, P. R. China
| | - Youhua Tao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, P. R. China
| |
Collapse
|
10
|
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]
|
11
|
Affiliation(s)
- Yu Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Tie-Qi Xu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| |
Collapse
|
12
|
Jiang J, Cui Y, Lu Y, Zhang B, Pan X, Wu J. Weak Lewis Pairs as Catalysts for Highly Isoselective Ring-Opening Polymerization of Epimerically Labile rac-O-Carboxyanhydride of Mandelic Acid. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02302] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jinxing Jiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yaqin Cui
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yaguang Lu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, P. R. China
| | - Bin Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450002, P. R. China
| | - Xiaobo Pan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jincai Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| |
Collapse
|
13
|
Imidodiphosphorimidate (IDPi) as an efficient organocatalyst for controlled/living ring-opening polymerization of lactones. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109449] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Liang J, Yin T, Han S, Yang J. Synthesis of macrocyclic poly(α-hydroxyl acids) via DABCO-mediated ROP of O-carboxylanhydrides derived from l-phenylalanine even in the presence of an alcohol. Polym Chem 2020. [DOI: 10.1039/d0py01083a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
On exploration of a catalytic system including simple 1,4-diazabicyclo-[2.2.2]octane (DABCO), triethylboron (TEB) and benzylalcohol (BnOH), a new pathway to achieve cyclic PAHAs was developed via ROP of OCAs.
Collapse
Affiliation(s)
- Jinpeng Liang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Ting Yin
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Song Han
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| |
Collapse
|
15
|
Nifant’ev I, Ivchenko P. DFT Modeling of Organocatalytic Ring-Opening Polymerization of Cyclic Esters: A Crucial Role of Proton Exchange and Hydrogen Bonding. Polymers (Basel) 2019; 11:E2078. [PMID: 31842423 PMCID: PMC6961033 DOI: 10.3390/polym11122078] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 12/05/2019] [Accepted: 12/11/2019] [Indexed: 01/17/2023] Open
Abstract
Organocatalysis is highly efficient in the ring-opening polymerization (ROP) of cyclic esters. A variety of initiators broaden the areas of organocatalysis in polymerization of different monomers, such as lactones, cyclic carbonates, lactides or gycolides, ethylene phosphates and phosphonates, and others. The mechanisms of organocatalytic ROP are at least as diverse as the mechanisms of coordination ROP; the study of these mechanisms is critical in ensuring the polymer compositions and architectures. The use of density functional theory (DFT) methods for comparative modeling and visualization of organocatalytic ROP pathways, in line with experimental proof of the structures of the reaction intermediates, make it possible to establish these mechanisms. In the present review, which continues and complements our recent manuscript that focused on DFT modeling of coordination ROP, we summarized the results of DFT modeling of organocatalytic ROP of cyclic esters and some related organocatalytic processes, such as polyester transesterification.
Collapse
Affiliation(s)
- Ilya Nifant’ev
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, 119991 Moscow, Russia
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
| | - Pavel Ivchenko
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, 119991 Moscow, Russia
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia
| |
Collapse
|
16
|
Bandelli D, Alex J, Weber C, Schubert US. Polyester Stereocomplexes Beyond PLA: Could Synthetic Opportunities Revolutionize Established Material Blending? Macromol Rapid Commun 2019; 41:e1900560. [DOI: 10.1002/marc.201900560] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/15/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Damiano Bandelli
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University Jena Philosophenweg 7 07743 Jena Germany
| | - Julien Alex
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University Jena Philosophenweg 7 07743 Jena Germany
| | - Christine Weber
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University Jena Philosophenweg 7 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM)Friedrich Schiller University Jena Philosophenweg 7 07743 Jena Germany
| |
Collapse
|
17
|
Affiliation(s)
- Dylan J. Walsh
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Michael G. Hyatt
- Department of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Susannah A. Miller
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Damien Guironnet
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
18
|
Affiliation(s)
- F. Ruipérez
- POLYMAT, University of the Basque Country UPV/EHU, Donostia-San Sebastián, Spain
| |
Collapse
|
19
|
He Y, Li H, Zheng X, Yuan M, Yang R, Yuan M, Yang C. Preparation, In Vivo and In Vitro Release of Polyethylene Glycol Monomethyl Ether-Polymandelic Acid Microspheres Loaded Panax Notoginseng Saponins. Molecules 2019; 24:E2024. [PMID: 31137874 PMCID: PMC6572365 DOI: 10.3390/molecules24102024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 11/16/2022] Open
Abstract
In order to enrich the types of Panax notoginseng saponins (PNS) sustained-release preparations and provide a new research idea for the research and development of traditional Chinese medicine sustained-release formulations, a series of Panax notoginseng saponins microspheres was prepared by a double emulsion method using a series of degradable amphiphilic macromolecule materials polyethylene glycol monomethyl ether-polymandelic acid (mPEG-PMA) as carrier. The structure and molecular weight of the series of mPEG-PMA were determined by nuclear magnetic resonance spectroscopy (1 HNMR) and gel chromatography (GPC). The results of the appearance, particle size, drug loading and encapsulation efficiency of the drug-loaded microspheres show that the mPEG10000-PMA (1:9) material is more suitable as a carrier for loading the total saponins of Panax notoginseng. The particle size was 2.51 ± 0.21 μm, the drug loading and encapsulation efficiency were 8.54 ± 0.16% and 47.25 ± 1.64%, respectively. The drug-loaded microspheres were used for in vitro release and degradation experiments to investigate the degradation and sustained release behaviour of the drug-loaded microspheres. The biocompatibility of the microspheres was studied by haemolytic, anticoagulant and cytotoxicity experiments. The pharmacological activity of the microspheres was studied by anti-inflammatory and anti-tumour experiments. The results showed that the drug-loaded microspheres could be released stably for about 12 days and degraded within 60 days. At the same time, the microspheres had good biocompatibility, anti-inflammatory and anti-tumour activities.
Collapse
Affiliation(s)
- Yi He
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| | - Hongli Li
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| | - Xiangyu Zheng
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| | - Mingwei Yuan
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| | - Renyu Yang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| | - Minglong Yuan
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| | - Cui Yang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming 650500, China.
| |
Collapse
|
20
|
|
21
|
Maji R, Ugale H, Wheeler SE. Understanding the Reactivity and Selectivity of Fluxional Chiral DMAP-Catalyzed Kinetic Resolutions of Axially Chiral Biaryls. Chemistry 2019; 25:4452-4459. [PMID: 30657217 DOI: 10.1002/chem.201806068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/17/2019] [Indexed: 12/17/2022]
Abstract
Fluxional chiral DMAP-catalyzed kinetic resolutions of axially chiral biaryls were examined using density functional theory. Computational analyses lead to a revised understanding of this reaction in which the interplay of numerous non-covalent interactions control the conformation and flexibility of the active catalyst, the preferred mechanism, and the stereoselectivity. Notably, while the DMAP catalyst itself is confirmed to be highly fluxional, electrostatically driven π⋅⋅⋅π+ interactions render the active, acylated form of the catalyst highly rigid, explaining its pronounced stereoselectivity.
Collapse
Affiliation(s)
- Rajat Maji
- Department of Chemistry, Texas A&M University, College Station, TX, 77842, USA
| | - Heena Ugale
- Department of Chemistry, Texas A&M University, College Station, TX, 77842, USA
| | - Steven E Wheeler
- Department of Chemistry, Texas A&M University, College Station, TX, 77842, USA.,Center for Computational Quantum Chemistry, Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| |
Collapse
|
22
|
Wei F, Zhu H, Li Z, Wang H, Zhu Y, Zhang L, Yao Z, Luo Z, Zhang C, Guo K. Food Sweetener Saccharin in Binary Organocatalyst for Bulk Ring‐Opening Polymerization of Lactide. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801319] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fulan Wei
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Hui Zhu
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Zhenjiang Li
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Haixin Wang
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Yuejia Zhu
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Lei Zhang
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Zhiwei Yao
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Zikun Luo
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Chan Zhang
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| | - Kai Guo
- State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical EngineeringNanjing Tech University 30 Puzhu Road South Nanjing 211816 People's Republic of China
| |
Collapse
|
23
|
Cui Y, Jiang J, Pan X, Wu J. Highly isoselective ring-opening polymerization of rac-O-carboxyanhydrides using a zinc alkoxide initiator. Chem Commun (Camb) 2019; 55:12948-12951. [DOI: 10.1039/c9cc06108h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly isoselective ROP system using just a zinc alkoxide as an initiator for the isoselective ROP of OCAs with the best Pm value of 0.97 at −70 °C.
Collapse
Affiliation(s)
- Yaqin Cui
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Jinxing Jiang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Xiaobo Pan
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| | - Jincai Wu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Lanzhou University
- Lanzhou 730000
| |
Collapse
|
24
|
Wang P, Liang J, Yin T, Yang J. Simple Lewis pairs of zinc salts and organobases as bifunctional catalysts for controlled ring-opening polymerization of O-carboxyanhydrides. Polym Chem 2019. [DOI: 10.1039/c9py00776h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple Lewis pairs consisting of organobases and zinc salts were explored to promote ring-opening polymerization of phenyl O-carboxyanhydride via bifunctional catalysis, producing well-defined poly(α-hydroxyalkanoic acid)s with good isotacticity (Pm = 0.88).
Collapse
Affiliation(s)
- Pei Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jinpeng Liang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Ting Yin
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| |
Collapse
|
25
|
Zhong Y, Tong R. Living Ring-Opening Polymerization of O-Carboxyanhydrides: The Search for Catalysts. Front Chem 2018; 6:641. [PMID: 30622943 PMCID: PMC6308324 DOI: 10.3389/fchem.2018.00641] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 12/07/2018] [Indexed: 12/13/2022] Open
Abstract
Biodegradable poly(α-hydroxy acids) can be synthesized by means of ring-opening polymerization (ROP) of O-carboxyanhydrides (OCAs). Numerous catalysts have been developed to control the living polymerization of OCAs. Here we review the rationale for the use of OCA, the desirable features for and important attributes of catalysts for the ROP of OCAs, and specific examples that have been developed.
Collapse
Affiliation(s)
| | - Rong Tong
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| |
Collapse
|
26
|
Mase N, Moniruzzaman, Mori S, Ishizuka J, Kumazawa F, Yamamoto S, Sato K, Narumi T. Organocatalytic ring-opening polymerization of l-lactide in supercritical carbon dioxide under plasticizing conditions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
27
|
Newman MR, Russell SG, Benoit DSW. Controlled organocatalyzed d,l-lactide ring-opening polymerizations: synthesis of low molecular weight oligomers. RSC Adv 2018; 8:28891-28894. [PMID: 35539697 PMCID: PMC9084349 DOI: 10.1039/c8ra05306e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/07/2018] [Indexed: 11/21/2022] Open
Abstract
A systematic approach to the synthesis of organocatalyzed oligo(d,l-lactide) demonstrates that choice of initiator, catalytic ratio, and reaction time yields well-controlled oligomers. Ring-opening polymerization of d,l-lactide with the initiator α-methyl propargyl alcohol, a secondary alcohol, used in excess of 4-dimethylaminopyridine catalyst mitigates cyclicization, transesterification, and catalyst-initiated side reactions. This approach enables the design of uniform lactide oligomers for controlled release applications, such as delivery systems for drugs, prodrugs, and molecular sensors.
Collapse
Affiliation(s)
- M R Newman
- Department of Biomedical Engineering, University of Rochester Rochester NY 14627 USA
- Center for Musculoskeletal Research, University of Rochester Medical Center Rochester NY 14642 USA
| | - S G Russell
- Department of Chemical Engineering, University of Rochester Rochester NY 14627 USA
| | - D S W Benoit
- Department of Biomedical Engineering, University of Rochester Rochester NY 14627 USA
- Center for Musculoskeletal Research, University of Rochester Medical Center Rochester NY 14642 USA
- Department of Chemical Engineering, University of Rochester Rochester NY 14627 USA
| |
Collapse
|
28
|
Zhu N, Liu Y, Liu J, Ling J, Hu X, Huang W, Feng W, Guo K. Organocatalyzed chemoselective ring-opening polymerizations. Sci Rep 2018; 8:3734. [PMID: 29487371 PMCID: PMC5829214 DOI: 10.1038/s41598-018-22171-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 02/19/2018] [Indexed: 11/26/2022] Open
Abstract
A novel metal-free and protecting-group-free synthesis method to prepare telechelic thiol-functionalized polyesters is developed by employing organocatalysis. A scope of Brønsted acids, including trifluoromethanesulfonic acid (1), HCl.Et2O (2), diphenyl phosphate (3), γ-resorcylic acid (4) and methanesulfonic acid (5), are evaluated to promote ring-opening polymerization of ε-caprolactone with unprotected 6-mercapto-1-hexanol as the multifunctional initiator. Among them, diphenyl phosphate (3) exhibits great chemoselectivity and efficiency, which allows for simply synthesis of thiol-terminated poly(ε-caprolactone) with near-quantitative thiol fidelity, full monomer conversion, controlled molecular weight and narrow polydispersity. Kinetic study confirms living/controlled nature of the organocatalyzed chemoselective polymerizations. Density functional theory calculation illustrates that the chemoselectivity of diphenyl phosphate (3) is attributed to the stronger bifunctional activation of monomer and initiator/chain-end as well as the lower energy in hydroxyl pathway than thiol one. Moreover, series of tailor-made telechelic thiol-terminated poly(δ-valerolactone) and block copolymers are efficiently generated under mild conditions.
Collapse
Affiliation(s)
- Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, China
| | - Yihuan Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, China
| | - Junhua Liu
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization of the Ministry of Education, Zhejiang University, Hangzhou, 310027, China
- Zhejiang Center for Drug & Cosmetic Evaluation, Hangzhou, 310012, China
| | - Jun Ling
- Department of Polymer Science and Engineering, Key Laboratory of Macromolecular Synthesis and Functionalization of the Ministry of Education, Zhejiang University, Hangzhou, 310027, China
| | - Xin Hu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211800, China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, China
| | - Weijun Huang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, China
| | - Weiyang Feng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, China
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211800, China.
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211800, China.
- Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211800, China.
| |
Collapse
|
29
|
Nie Y, Wang P, Du H, Meng W, Yang J. An efficient strategy for achieving controlled ring-opening polymerization of O-carboxyanhydrides via amine initiation in collaboration with metal-alkoxide catalysis. Polym Chem 2018. [DOI: 10.1039/c8py01090k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amines and Zn(C6F5)2 for polymerization initiation and functionality transfer from Zn(C6F5)2 to a metal-alkoxide species for promoting chain propagation to achieve well controlled ring-opening polymerization of O-carboxyanhydrides.
Collapse
Affiliation(s)
- Yanzhao Nie
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Pei Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| |
Collapse
|
30
|
Bexis P, De Winter J, Coulembier O, Dove AP. Isotactic degradable polyesters derived from O-carboxyanhydrides of l-lactic and l-malic acid using a single organocatalyst/initiator system. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.05.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
31
|
Zabalov MV, Tiger RP. Specificities of application of the supermolecule method to the calculation of reaction mechanisms in a protonodonor medium. Ethylene carbonate aminolysis in methanol. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2124-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
32
|
Sun Y, Jia Z, Chen C, Cong Y, Mao X, Wu J. Alternating Sequence Controlled Copolymer Synthesis of α-Hydroxy Acids via Syndioselective Ring-Opening Polymerization of O-Carboxyanhydrides Using Zirconium/Hafnium Alkoxide Initiators. J Am Chem Soc 2017; 139:10723-10732. [DOI: 10.1021/jacs.7b04712] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yangyang Sun
- State
Key Laboratory of Applied Organic Chemistry, 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
| | - Zhaowei Jia
- State
Key Laboratory of Applied Organic Chemistry, 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
| | - Changjuan Chen
- State
Key Laboratory of Applied Organic Chemistry, 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
- College
of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian 463000, People’s Republic of China
| | - Yong Cong
- State
Key Laboratory of Applied Organic Chemistry, 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
| | - Xiaoyang Mao
- State
Key Laboratory of Applied Organic Chemistry, 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, 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
| |
Collapse
|
33
|
Price DJ, Khuphe M, Davies RPW, McLaughlan JR, Ingram N, Thornton PD. Poly(amino acid)-polyester graft copolymer nanoparticles for the acid-mediated release of doxorubicin. Chem Commun (Camb) 2017; 53:8687-8690. [PMID: 28722060 DOI: 10.1039/c7cc04504b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Biodegradable polymers have emerged as highly effective drug delivery vehicles. We combine N-carboxyanhydride and O-carboxyanhydride ring opening polymerisations to synthesise a poly(amino acid)-polyester graft copolymer capable of encapsulating, and subsequently releasing doxorubicin via acid-mediated hydrolysis. Consequently, the nanoparticles detailed are extremely promising vehicles for the controlled delivery of chemotherapeutic agents.
Collapse
Affiliation(s)
| | | | - Robert P W Davies
- Oral Biology (School of Dentistry), University of Leeds, LS2 9JT, UK
| | - James R McLaughlan
- School of Electronic & Electrical Engineering, University of Leeds, LS2 9JT, UK
| | - Nicola Ingram
- School of Chemistry, University of Leeds, LS2 9JT, UK. and Leeds Institute of Biomedical and Clinical Sciences, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, UK
| | | |
Collapse
|
34
|
Affiliation(s)
- Rong Tong
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 635 Prices Fork Road, Blacksburg, Virginia 24061, United States
| |
Collapse
|
35
|
Sanchez-Sanchez A, Rivilla I, Agirre M, Basterretxea A, Etxeberria A, Veloso A, Sardon H, Mecerreyes D, Cossío FP. Enantioselective Ring-Opening Polymerization of rac-Lactide Dictated by Densely Substituted Amino Acids. J Am Chem Soc 2017; 139:4805-4814. [DOI: 10.1021/jacs.6b13080] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana Sanchez-Sanchez
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia/San
Sebastian, Spain
| | - Ivan Rivilla
- Departamento
de Química Orgánica I and Instituto de Innovación
en Química Avanzada (ORFEO−CINQA), University of the Basque Country UPV/EHU, P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
| | - Maddalen Agirre
- Departamento
de Química Orgánica I and Instituto de Innovación
en Química Avanzada (ORFEO−CINQA), University of the Basque Country UPV/EHU, P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
| | - Andere Basterretxea
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia/San
Sebastian, Spain
| | - Agustin Etxeberria
- Department
of Polymer Science and Technology, Institute of Polymer Materials, University of the Basque Country UPV/EHU, P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
| | - Antonio Veloso
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia/San
Sebastian, Spain
| | - Haritz Sardon
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia/San
Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
- Department
of Polymer Science and Technology, Institute of Polymer Materials, University of the Basque Country UPV/EHU, P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
| | - David Mecerreyes
- POLYMAT, University of the Basque Country UPV/EHU, Joxe Mari Korta Center, Avda. Tolosa
72, 20018 Donostia/San
Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Fernando P. Cossío
- Departamento
de Química Orgánica I and Instituto de Innovación
en Química Avanzada (ORFEO−CINQA), University of the Basque Country UPV/EHU, P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
- Donostia International Physics Center (DIPC), P° Manuel Lardizabal 4, 20018 Donostia/San Sebastian, Spain
| |
Collapse
|
36
|
Ouyang H, Nie K, Yuan D, Yao Y. Synthesis of amine-bridged bis(phenolate) rare-earth metal aryloxides and their catalytic performances for the ring-opening polymerization of l-lactic acid O-carboxyanhydride and l-lactide. Dalton Trans 2017; 46:15928-15938. [PMID: 29119172 DOI: 10.1039/c7dt03001k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rare-earth metal aryloxides were found as efficient initiators for the ring-opening polymerization of l-lactic acid O-carboxyanhydride and l-lactide. A comparative study on catalyst activities and reaction kinetics were conducted.
Collapse
Affiliation(s)
- Hao Ouyang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Kun Nie
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Dan Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis
- and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
- College of Chemistry
- Chemical Engineering and Materials Science
| |
Collapse
|
37
|
Gregory GL, López-Vidal EM, Buchard A. Polymers from sugars: cyclic monomer synthesis, ring-opening polymerisation, material properties and applications. Chem Commun (Camb) 2017; 53:2198-2217. [DOI: 10.1039/c6cc09578j] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This feature article gives an overview of sugar-based polymers that can be made by ring-opening-polymerisation and their applications.
Collapse
|
38
|
Basu A, Kunduru KR, Katzhendler J, Domb AJ. Poly(α-hydroxy acid)s and poly(α-hydroxy acid-co-α-amino acid)s derived from amino acid. Adv Drug Deliv Rev 2016; 107:82-96. [PMID: 27527666 DOI: 10.1016/j.addr.2016.08.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 07/17/2016] [Accepted: 08/04/2016] [Indexed: 12/16/2022]
Abstract
Polyesters derived from the α-hydroxy acids, lactic acid, and glycolic acid, are the most common biodegradable polymers in clinical use. These polymers have been tailored for a range of applications that require a physical material possessing. The physical and mechanical properties of these polymers fit the specific application and also safely biodegrade. These polymers are hydrophobic and do not possess functional side groups. This does not allow hydrophilic or hydrophobic manipulation, conjugation of active agents along the polymer chain, etc. These manipulations have partly been achieved by block copolymerization with, for example, poly(ethylene glycol), to obtain an amphiphilic copolymer. The objective of this review is to survey PLA functional copolymers in which functional α-hydroxy acids derived from amino acids are introduced along the polymer chain, allowing endless manipulation of PLA. Biodegradable functional polyesters are one of the most versatile biomaterials available to biomedical scientists. Amino acids with their variable side chains are ideal candidates for synthesizing such structural as well as stereochemically diverse polymers. They render control over functionalization, conjugation, crosslinking, stimulus responsiveness, and tunable mechanical/thermal properties. Functionalized amino acid derived polyesters are widely used, mainly due to advancement in ring opening polymerization (primarily O-carboxyanhydride mediated). The reaction proceeds under milder conditions and yields high molecular weight polymers. We reviewed on advances in the synthetic methodologies for poly-α-hydroxy esters derived from amino acids with appropriate recent examples.
Collapse
|
39
|
Wang R, Zhang J, Yin Q, Xu Y, Cheng J, Tong R. Controlled Ring‐Opening Polymerization of
O
‐Carboxyanhydrides Using a β‐Diiminate Zinc Catalyst. Angew Chem Int Ed Engl 2016; 55:13010-13014. [DOI: 10.1002/anie.201605508] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 08/10/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Ruibo Wang
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Jiawei Zhang
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Qian Yin
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Yunxiang Xu
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Jianjun Cheng
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Rong Tong
- Department of Chemical Engineering Virginia Polytechnic Institute and State University 635 Prices Fork Rd. Blacksburg VA 24061 USA
| |
Collapse
|
40
|
Wang R, Zhang J, Yin Q, Xu Y, Cheng J, Tong R. Controlled Ring‐Opening Polymerization of
O
‐Carboxyanhydrides Using a β‐Diiminate Zinc Catalyst. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605508] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ruibo Wang
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Jiawei Zhang
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Qian Yin
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Yunxiang Xu
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Jianjun Cheng
- Department of Materials Science and Engineering University of Illinois at Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Rong Tong
- Department of Chemical Engineering Virginia Polytechnic Institute and State University 635 Prices Fork Rd. Blacksburg VA 24061 USA
| |
Collapse
|
41
|
Panahi F, Dangolani SK, Khalafi-Nezhad A. Synthesis of a Novel Magnetic Reusable Organocatalyst Based on 4-Dialkylaminopyridines for Acyl Transformations. ChemistrySelect 2016. [DOI: 10.1002/slct.201600824] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Farhad Panahi
- Department of Chemistry; College of Sciences; Shiraz 71454, Iran Iran
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
| | | | | |
Collapse
|
42
|
Fast and selective ring-opening polymerizations by alkoxides and thioureas. Nat Chem 2016; 8:1047-1053. [DOI: 10.1038/nchem.2574] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 06/13/2016] [Indexed: 02/08/2023]
|
43
|
Lu N, Chang WH, Wei RJ, Fang YC, Han TW, Wang GQ, Chang JY, Wen YS, Liu LK. Pyridinium saccharinate salts as efficient recyclable acylation catalyst: a new bridge between heterogeneous and homogeneous catalysis. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
44
|
Zhu N, Feng W, Hu X, Zhang Z, Fang Z, Zhang K, Li Z, Guo K. Organocatalyzed continuous flow ring-opening polymerizations to homo- and block-polylactones. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
45
|
Dangolani SK, Panahi F, Nourisefat M, Khalafi-Nezhad A. 4-Dialkylaminopyridine modified magnetic nanoparticles: as an efficient nano-organocatalyst for one-pot synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives in water. RSC Adv 2016. [DOI: 10.1039/c6ra18078g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A new DMAP-based magnetic nano-organocatalyst was developed for efficient one-pot synthesis of 2-amino-4H-chromene-3-carbonitrile derivatives in water as a green solvent.
Collapse
Affiliation(s)
| | - Farhad Panahi
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - Maryam Nourisefat
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Ali Khalafi-Nezhad
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| |
Collapse
|
46
|
Yin Q, Yin L, Wang H, Cheng J. Synthesis and biomedical applications of functional poly(α-hydroxy acids) via ring-opening polymerization of O-carboxyanhydrides. Acc Chem Res 2015; 48:1777-87. [PMID: 26065588 DOI: 10.1021/ar500455z] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Poly(α-hydroxy acids) (PAHAs) are a class of biodegradable and biocompatible polymers that are widely used in numerous applications. One drawback of these conventional polymers, however, is their lack of side-chain functionalities, which makes it difficult to conjugate active moieties to PAHA or to fine-tune the physical and chemical properties of PAHA-derived materials through side-chain modifications. Thus, extensive efforts have been devoted to the development of methodology that allows facile preparation of PAHAs with controlled molecular weights and a variety of functionalities for widespread utilities. However, it is highly challenging to introduce functional groups into conventional PAHAs derived from ring-opening polymerization (ROP) of lactides and glycolides to yield functional PAHAs with favorable properties, such as tunable hydrophilicity/hydrophobicity, facile postpolymerization modification, and well-defined physicochemical properties. Amino acids are excellent resources for functional polymers because of their low cost, availability, and structural as well as stereochemical diversity. Nevertheless, the synthesis of functional PAHAs using amino acids as building blocks has been rarely reported because of the difficulty of preparing large-scale monomers and poor yields during the synthesis. The synthesis of functionalized PAHAs from O-carboxyanhydrides (OCAs), a class of five-membered cyclic anhydrides derived from amino acids, has proven to be one of the most promising strategies and has thus attracted tremendous interest recently. In this Account, we highlight the recent progress in our group on the synthesis of functional PAHAs via ROP of OCAs and their self-assembly and biomedical applications. New synthetic methodologies that allow the facile preparation of PAHAs with controlled molecular weights and various functionalities through ROP of OCAs are reviewed and evaluated. The in vivo stability, side-chain functionalities, and/or trigger responsiveness of several functional PAHAs are evaluated. Their biomedical applications in drug and gene delivery are also discussed. The ready availability of starting materials from renewable resources and the facile postmodification strategies such as azide-alkyne cycloaddition and the thiol-yne "click" reaction have enabled the production of a multitude of PAHAs with controlled molecular weights, narrow polydispersity, high terminal group fidelities, and structural diversities that are amenable for self-assembly and bioapplications. We anticipate that this new generation of PAHAs and their self-assembled nanosystems as biomaterials will open up exciting new opportunities and have widespread utilities for biological applications.
Collapse
Affiliation(s)
- Qian Yin
- Department
of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Lichen Yin
- Institute
of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory
for Carbon-Based Functional Materials and Devices and Collaborative
Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China
| | - Hua Wang
- Department
of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Jianjun Cheng
- Department
of Materials Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
47
|
Martin Vaca B, Bourissou D. O-Carboxyanhydrides: Useful Tools for the Preparation of Well-Defined Functionalized Polyesters. ACS Macro Lett 2015; 4:792-798. [PMID: 35596481 DOI: 10.1021/acsmacrolett.5b00376] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Over the last ten years, O-carboxyanhydrides (OCA) have attracted increasing attention as ring-opening polymerization (ROP) monomers. They are readily available from α-hydroxyacids and are significantly more reactive than 1,4-dioxane-2,5-diones. Thus, softer catalysts and milder reaction conditions can be used, allowing for a better control of the polymerization. Most attractive are the functionalized OCA that enable the introduction of functional groups along the polyester backbone and thereby vary and finely tune their physicochemical properties. In this viewpoint, the achievements made over the last years are critically overviewed. Particular attention is paid to the different catalytic approaches that have been reported for the ROP of these heterocycles and to the comparison with lactide ROP. In addition, the most representative examples of functionalized polyesters and polymer conjugates prepared from OCA are discussed.
Collapse
Affiliation(s)
- Blanca Martin Vaca
- Université de Toulouse, UPS, 118 route de Narbonne, F-31062 Toulouse, France
- CNRS, LHFA UMR5069, F-31062 Toulouse, France
| | - Didier Bourissou
- Université de Toulouse, UPS, 118 route de Narbonne, F-31062 Toulouse, France
- CNRS, LHFA UMR5069, F-31062 Toulouse, France
| |
Collapse
|
48
|
Jones GO, Chang YA, Horn HW, Acharya AK, Rice JE, Hedrick JL, Waymouth RM. N-Heterocyclic Carbene-Catalyzed Ring Opening Polymerization of ε-Caprolactone with and without Alcohol Initiators: Insights from Theory and Experiment. J Phys Chem B 2015; 119:5728-37. [DOI: 10.1021/acs.jpcb.5b01595] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gavin O. Jones
- IBM Research—Almaden, 650 Harry Road, San Jose, California 95120, United States
| | - Young A. Chang
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Hans W. Horn
- IBM Research—Almaden, 650 Harry Road, San Jose, California 95120, United States
| | - Ashwin K. Acharya
- Department
of Chemistry, University of Chicago, 5735 South Ellis Avenue, Room GHJ 222, Chicago, Illinois 60637, United States
| | - Julia E. Rice
- IBM Research—Almaden, 650 Harry Road, San Jose, California 95120, United States
| | - James L. Hedrick
- IBM Research—Almaden, 650 Harry Road, San Jose, California 95120, United States
| | - Robert M. Waymouth
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
| |
Collapse
|
49
|
Mesas-Sánchez L, Dinér P. A Mechanistic Investigation of the Kinetic Resolution of Secondary Aromatic Alcohols Using a Ferrocene-Based Planar Chiral 4-(Dimethylamino)pyridine Catalyst. Chemistry 2015; 21:5623-31. [DOI: 10.1002/chem.201405793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Indexed: 11/12/2022]
|
50
|
Franke JH, Kosov DS. Adsorption and ring-opening of lactide on the chiral metal surface Pt(321)(S) studied by density functional theory. J Chem Phys 2015; 142:044703. [PMID: 25637999 DOI: 10.1063/1.4906151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study the adsorption and ring-opening of lactide on the naturally chiral metal surface Pt(321)(S). Lactide is a precursor for polylactic acid ring-opening polymerization, and Pt is a well known catalyst surface. We study, here, the energetics of the ring-opening of lactide on a surface that has a high density of kink atoms. These sites are expected to be present on a realistic Pt surface and show enhanced catalytic activity. The use of a naturally chiral surface also enables us to study potential chiral selectivity effects of the reaction at the same time. Using density functional theory with a functional that includes the van der Waals forces in a first-principles manner, we find modest adsorption energies of around 1.4 eV for the pristine molecule and different ring-opened states. The energy barrier to be overcome in the ring-opening reaction is found to be very small at 0.32 eV and 0.30 eV for LL- and its chiral partner DD-lactide, respectively. These energies are much smaller than the activation energy for a dehydrogenation reaction of 0.78 eV. Our results thus indicate that (a) ring-opening reactions of lactide on Pt(321) can be expected already at very low temperatures, and Pt might be a very effective catalyst for this reaction; (b) the ring-opening reaction rate shows noticeable enantioselectivity.
Collapse
Affiliation(s)
- J-H Franke
- Department of Physics, Campus Plaine - CP 231, Universite Libre de Bruxelles, 1050 Brussels, Belgium
| | - D S Kosov
- Department of Physics, Campus Plaine - CP 231, Universite Libre de Bruxelles, 1050 Brussels, Belgium
| |
Collapse
|