Synthesis and structural characterization of zinc complexes supported by amino-benzotriazole phenoxide ligands: Efficient catalysts for ring-opening polymerization of ε-caprolactone and β-butyrolactone

Li, Jia Ying; Li, Chen Yu; Tai, Wan Ju; Lin, Chia Her; Ko, Bao‐Tsan

doi:10.1016/j.inoche.2011.04.008

Cited by 22 publications

(1 citation statement)

References 27 publications

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“…Compared with above catalysts, metallic complexes exhibit a great capability to control the polymer microstructure, molecular weight, and PDI. Ti, [29] Al, [30][31][32] Ni, [33] Zn, [34][35][36][37][38][39][40] In, [41] Mg, [42,43] and other metallic complexes produce polyester via coordination ROP of cyclic esters. Among these metallic complexes, aluminum complexes have received considerable attention for their high activity and ability of controlling ROP.…”

Section: Introductionmentioning

confidence: 99%

Review – recent development of ring-opening polymerization of cyclic esters using aluminum complexes

Ruan

Xiao

et al. 2013

Designed Monomers and Polymers

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With the development of the technology of ring-opening polymerization (ROP) rapidly, many novel aluminum complexes have been designed, synthesized, and applied in initiating ROP of cyclic esters and new stereoregular polymerization mechanism of lactide polymerization have been reported. In this review, the mechanism for ROP of cyclic ester, synthesis of aluminum complexes containing tetradendete ligand, tridentate ligand, bidentate ligand, and bimetallic complexes containing aluminum were reviewed. We hope to give some helpful information for designing aluminum complexes, improving activity, and stereoregularity of aluminum complexes.Keywords: ring-opening polymerization; cyclic ester; aluminum complexes; stereoregularity IntroductionAliphatic polyester is biodegradable and biocompatible materials, which prepared using ring-opening polymerization (ROP) of cyclic ester such as lactide, caprolactone. trimethylene carbonate, and other cyclic ester. [1,2] Due to effective influences of microstructure, molecular weight, and polydispersity indexes (PDIs) on polyester physicochemical properties, the controlled/living ROP for synthesis of polyester which enables the ready to control these parameters attracted an extraordinary amount of research recently.[3-6] During the last two decades, the improvement in catalyst makes it possible to design and synthesis of polyester. [7][8][9][10]

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Section: Introductionmentioning

confidence: 99%

Review – recent development of ring-opening polymerization of cyclic esters using aluminum complexes

Ruan

Xiao

et al. 2013

Designed Monomers and Polymers

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Synthesis and characterization of aluminum complexes based on amino‐benzotriazole phenoxide ligand: luminescent properties and catalysis for ring‐opening polymerization

Tai

Lin

et al. 2012

Applied Organom Chemis

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Aluminum complexes coordinated by a C1DEABTP ligand (C1DEABTP‐H = 2‐(2H‐benzotriazol‐2‐yl)‐6‐((diethylamino)methyl)‐4‐methylphenol) were synthesized and structurally characterized. The formation of Al complexes is dependent on the stoichiometry of AlMe3 to C1DEABTP ligand ratio. The reaction of C1DEABTP‐H with AlMe3 (1.0 molar equiv.) in hexane produced mono‐adduct aluminum complex [(C1DEABTP)AlMe2] (1), but treatment of C1DEABTP‐H with 2.0 molar equiv. of AlMe3 afforded mixtures of [(C1DEABTP)Al2Me5] (2) and [(C1DEABTP)Al3Me8] (3). The penta‐coordinated bis‐adduct aluminum complex [(C1DEABTP)2AlMe] (4) was synthesized through the reaction of AlMe3 with C1DEABTP‐H (2.0 molar equiv.) in hexane. Tri‐adduct Al complex [(C1DEABTP)3Al] (5) resulted from treatment of AlMe3 with C1DEABTP‐H (3.0 equiv.); the Al center is hexa‐coordinated with three N,O‐bidentate C1DEABTP ligands. X‐ray diffraction of single crystals indicates that the bonding modes of the C1DEABTP ligands in complexes 2–3 are greatly affected when excess AlMe3 is coordinated. The optical properties and catalysis for lactone polymerizations of C1DEABTP coordinated to Al complexes were tested. Tri‐adduct Al complex 5 produced an intense green fluorescence in both solution and the solid state. Complex 4 is an active catalyst for the ring‐opening polymerization of ε‐caprolactone (ε‐CL) and L‐lactide (L‐LA) in the presence of 9‐anthracenemethanol (9‐AnOH). In ε‐CL polymerization, Al complex 4 catalyzes efficiently in both a 'controlled' and 'immortal' manner, giving polymers with the expected molecular weights and narrow polydispersity indexes. Copyright © 2012 John Wiley & Sons, Ltd.

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Advances in cyclic ester ring‐opening polymerization using heterogeneous catalysts

Naz,

Abdur,

Mumtaz

et al. 2023

Applied Organom Chemis

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Aliphatic polyesters' propensity to be biocompatible and biodegradable, as well as their prospective applications in the medical and agricultural industries, has prompted much research into their synthesis. As ring‐opening polymerization (ROP) technology has advanced rapidly, the invention of discrete, thoroughly characterized heterogeneous catalysts, which are potent polymerization initiators for ROP, has received much attention during the last decade. Numerous polyester microstructures have been produced because of recent developments in the catalyst design of new heterogeneous catalysts and applied in initiating the ROP of cyclic esters. This study reviewed the ROP of cyclic ester catalysts composed of a heterogenous catalyst such as metal–organic frameworks (MOFs) and supported catalyst. MOFs are crystalline porous materials with tunable frameworks that make them potential mediums for polymerization. The MOF structure's precise design is important to control polymerizations because it provides control over both primary and higher‐order structures. Additionally, the stability of the heterogeneous catalyst is also discussed. Finally, the conclusion to the previous study and a stance for future prospects is given. This article intends to provide valuable information for building a heterogeneous catalyst for the ROP of cyclic esters with enhanced activity.

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Synthesis and structural characterization of zinc complexes supported by amino-benzotriazole phenoxide ligands: Efficient catalysts for ring-opening polymerization of ε-caprolactone and β-butyrolactone

Cited by 22 publications

References 27 publications

Review – recent development of ring-opening polymerization of cyclic esters using aluminum complexes

Review – recent development of ring-opening polymerization of cyclic esters using aluminum complexes

Synthesis and characterization of aluminum complexes based on amino‐benzotriazole phenoxide ligand: luminescent properties and catalysis for ring‐opening polymerization

Advances in cyclic ester ring‐opening polymerization using heterogeneous catalysts

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