One-Pot Random Copolymerization of Lactide and ε-Caprolactone Mediated by a Tri-Coordinated Zinc Catalyst

IF 4.3 2区化学 Q2 CHEMISTRY, APPLIED

Applied Organometallic Chemistry Pub Date : 2026-08-09 DOI:10.1002/aoc.70635

Priyanku Nath, Shweta Sagar, Aranya Ray, Himadri Karmakar, Rohan Kumar Mehar, Alok Sarkar, Tarun K. Panda

{"title":"One-Pot Random Copolymerization of Lactide and ε-Caprolactone Mediated by a Tri-Coordinated Zinc Catalyst","authors":"Priyanku Nath, Shweta Sagar, Aranya Ray, Himadri Karmakar, Rohan Kumar Mehar, Alok Sarkar, Tarun K. Panda","doi":"10.1002/aoc.70635","DOIUrl":null,"url":null,"abstract":"<div>\n \n A zinc complex bearing imino-phosphanamidinate chalcogenide ligands efficiently promotes the ring-opening polymerization (ROP) of rac-lactide (rac-LA) and ε-caprolactone (ε-CL), as well as their copolymerization. The complex demonstrated good control over the ROP of rac-LA, affording isotactic poly (lactic acid) (PLA) with high stereoselectivity (Pm = 0.82) and narrow dispersity (Ð < 1.3). One-pot ring-opening copolymerization (ROCOP) of rac-LA and ε-CL in the presence of the zinc complex has been shown to produce random copolymers with predictable molecular weights. The fact that the randomization of the copolymers is driven concurrently by the formation of a gradient/partially random copolymer species and slow transesterification was established via in situ NMR spectroscopy. PLA-co-CL copolymers with varying CL/LA ratios were synthesized, displaying a single glass transition temperature (Tg) within the range between the Tg values of the corresponding homopolymers.\n </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"40 9","pages":""},"PeriodicalIF":4.3000,"publicationDate":"2026-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Organometallic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aoc.70635","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

A zinc complex bearing imino-phosphanamidinate chalcogenide ligands efficiently promotes the ring-opening polymerization (ROP) of rac-lactide (rac-LA) and ε-caprolactone (ε-CL), as well as their copolymerization. The complex demonstrated good control over the ROP of rac-LA, affording isotactic poly (lactic acid) (PLA) with high stereoselectivity (P_m = 0.82) and narrow dispersity (Ð < 1.3). One-pot ring-opening copolymerization (ROCOP) of rac-LA and ε-CL in the presence of the zinc complex has been shown to produce random copolymers with predictable molecular weights. The fact that the randomization of the copolymers is driven concurrently by the formation of a gradient/partially random copolymer species and slow transesterification was established via in situ NMR spectroscopy. PLA-co-CL copolymers with varying CL/LA ratios were synthesized, displaying a single glass transition temperature (T_g) within the range between the T_g values of the corresponding homopolymers.

查看原文本刊更多论文

三配位锌催化剂催化丙交酯与ε-己内酯的一锅无规共聚

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.