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Yao M, Ding Y, Ma X, Deng Z, Zhong M, Yang Z. Synthesis and crystal structures of antimony(III) and tin(IV) compounds with an amino-amido-silane ligand. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.10.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Engel S, Höck H, Bocola M, Keul H, Schwaneberg U, Möller M. CaLB Catalyzed Conversion of ε-Caprolactone in Aqueous Medium. Part 1: Immobilization of CaLB to Microgels. Polymers (Basel) 2016; 8:E372. [PMID: 30974648 PMCID: PMC6432092 DOI: 10.3390/polym8100372] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 10/06/2016] [Accepted: 10/10/2016] [Indexed: 11/16/2022] Open
Abstract
The enzymatic ring-opening polymerization of lactones is a method of increasing interest for the synthesis of biodegradable and biocompatible polymers. In the past it was shown that immobilization of Candida antarctica lipase B (CaLB) and the reaction medium play an important role in the polymerization ability especially of medium ring size lactones like ε-caprolactone (ε-CL). We investigated a route for the preparation of compartmentalized microgels based on poly(glycidol) in which CaLB was immobilized to increase its esterification ability. To find the ideal environment for CaLB, we investigated the acceptable water concentration and the accessibility for the monomer in model polymerizations in toluene and analyzed the obtained oligomers/polymers by NMR and SEC. We observed a sufficient accessibility for ε-CL to a toluene like hydrophobic phase imitating a hydrophobic microgel. Comparing free CaLB and Novozym® 435 we found that not the monomer concentration but rather the solubility of the enzyme, as well as the water concentration, strongly influences the equilibrium of esterification and hydrolysis. On the basis of these investigations, microgels of different polarity were prepared and successfully loaded with CaLB by physical entrapment. By comparison of immobilized and free CaLB, we demonstrated an effect of the hydrophobicity of the microenvironment of CaLB on its enzymatic activity.
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Affiliation(s)
- Stefan Engel
- DWI-Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany.
| | - Heidi Höck
- DWI-Leibniz Institute for Interactive Materials and Institute of Biotechnology, RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany.
| | - Marco Bocola
- DWI-Leibniz Institute for Interactive Materials and Institute of Biotechnology, RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany.
| | - Helmut Keul
- DWI-Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany.
| | - Ulrich Schwaneberg
- DWI-Leibniz Institute for Interactive Materials and Institute of Biotechnology, RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany.
| | - Martin Möller
- DWI-Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, D-52056 Aachen, Germany.
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Shang XJ, Zhang WH, Lang JP. A unique cooperative catalytic system carrying metallic iron and 2-hydroxyethyl 2-bromoisobutyrate for the controlled/living ring-opening polymerization of ε-caprolactone. RSC Adv 2016. [DOI: 10.1039/c5ra22279f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Iron and 2-hydroxyethyl 2-bromoisobutyrate cooperatively initiates the ε-caprolactone polymerization, yielding polymers with high molecular weight and narrow molecular weight distribution.
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Affiliation(s)
- Xiu-Juan Shang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
| | - Wen-Hua Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
| | - Jian-Ping Lang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
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Wu MC, Hu TC, Lo YC, Lee TY, Lin CH, Lu WY, Lin CC, Datta A, Huang JH. New types of bi- and tri-dentate pyrrole-piperazine ligands and related zinc compounds: Synthesis, characterization, reaction study, and ring-opening polymerization of ε-caprolactone. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chang JC, Chen YC, Datta A, Lin CH, Hsiao CS, Huang JH. Synthesis and protonolysis of neutral aluminum dihydride compounds stabilized by tridentate-substituted pyrrolyl ligands: Synthesis, structural characterization and ring-opening polymerization of ɛ-caprolactone. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.08.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lecomte P, Jérôme C. Recent Developments in Ring-Opening Polymerization of Lactones. SYNTHETIC BIODEGRADABLE POLYMERS 2011. [DOI: 10.1007/12_2011_144] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ma WA, Wang L, Wang ZX. Dimethylaluminium iminophosphoranylenamides and iminophosphoranylanilides: Synthesis, characterisation, and their controlled ring-opening polymerisation of ε-caprolactone. Dalton Trans 2011; 40:4669-77. [DOI: 10.1039/c0dt01713b] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ma WA, Wang ZX. Synthesis and characterisation of aluminium(iii) and tin(ii) complexes bearing quinoline-based N,N,O-tridentate ligands and their catalysis in the ring-opening polymerisation of ε-caprolactone. Dalton Trans 2011; 40:1778-86. [DOI: 10.1039/c0dt01001d] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Schappacher M, Le Hellaye M, Bareille R, Durrieu MC, Guillaume SM. Comparative in vitro Cytotoxicity Toward Human Osteoprogenitor Cells of Polycaprolactones Synthesized from Various Metallic Initiators. Macromol Biosci 2010; 10:60-7. [DOI: 10.1002/mabi.200900184] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wei Z, Yu F, Chen G, Qu C, Wang P, Zhang W, Liang J, Qi M, Liu L. Nonisothermal crystallization and melting behavior of poly(ε-caprolactone)-b-poly(ethylene glycol)-b-poly(ε-caprolactone) by DSC analysis. J Appl Polym Sci 2009. [DOI: 10.1002/app.30706] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gao AH, Yao W, Mu Y, Gao W, Sun MT, Su Q. Heterobimetallic aluminium and zinc complex with N-arylanilido-imine ligand: Synthesis, structure and catalytic property for ring-opening polymerization of ε-caprolactone. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.05.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Gao A, Mu Y, Zhang J, Yao W. Aluminum Complexes with BidentateN,N-Dialkylaniline-arylamido Ligands: Synthesis, Structures, and Catalytic Properties for Efficient Ring-Opening Polymerization of ϵ-Caprolactone. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900158] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Wei Z, Liu L, Yu F, Wang P, Qi M. Synthesis and characterization of poly(ε-caprolactone)-b-poly(ethylene glycol)-b-poly(ε-caprolactone) triblock copolymers with dibutylmagnesium as catalyst. J Appl Polym Sci 2009. [DOI: 10.1002/app.29071] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Machado AV, Bounor-Legare V, Gonçalves ND, Melis F, Cassagnau P, Michel A. Continuous polymerization of ε-caprolactone initiated by titanium phenoxide in a twin-screw extruder. J Appl Polym Sci 2008. [DOI: 10.1002/app.28850] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Aluminum and zinc complexes supported by functionalized phenolate ligands: Synthesis, characterization and catalysis in the ring-opening polymerization of ε-caprolactone and rac-lactide. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.07.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yao W, Mu Y, Gao A, Su Q, Liu Y, Zhang Y. Efficient ring-opening polymerization of ɛ-caprolactone using anilido-imine–aluminum complexes in the presence of benzyl alcohol. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.03.035] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yao W, Mu Y, Gao A, Gao W, Ye L. Bimetallic anilido-aldimine Al or Zn complexes for efficient ring-opening polymerization of ε-caprolactone. Dalton Trans 2008:3199-206. [DOI: 10.1039/b719017d] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Qi CY, Wang ZX. Synthesis and characterization of aluminum(III) and tin(II) complexes supported by diiminophosphinate ligands and their application in ring-opening polymerization catalysis of ɛ-caprolactone. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21561] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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