Cited by 29Organometallic Complex Synthesis and Catalysisbiodegradable polymer synthesis and propertiesAdvanced Polymer Synthesis and Characterization

Aldehyde End‐Capped Degradable Polyethylenes From Hydrogen‐Controlled Ethylene/CO Copolymerization

Song, Chuang, Yang, Dian, Wang, Chaoqun, Tang, Zhenxin, Long, Yingyun, Zhang, Yuxing, Jian, Zhongbao·2024·Angewandte Chemie International Edition

Abstract

To access degradable polyolefin plastic, non‐alternating copolymerization of ethylene (E) and carbon monoxide (CO) for producing polyethylene (PE) with in‐chain ketones is particularly appealing; however, it still presents significant challenges such as molecular weight modulation (hydrogen response) and chain endgroup control (functional terminal). In this study, we achieved hydrogen‐controlled E/CO non‐alternating copolymerization using late transition metal catalysts. This process results in linear PEs containing the desired non‐alternating in‐chain keto groups (1.0–9.3 mol %) and with tunable molecular weights ranging from 43 to 195 kDa. In this reaction, H 2 serves as a chain transfer agent, modulating the polymer's molecular weight, forming unique aldehyde endgroups and eliminating usual olefinic endgroups; CO undergoes non‐alternating insertion into the PE chain, resulting in a strictly non‐alternating structure (>99 %) for the keto‐PE. The dispersed incorporation of in‐chain keto groups retains bulk properties of PE and makes PE susceptible to photodegradation, which produces significantly lower molecular weight polymers and oligomers with unambiguous vinyl and acetyl terminals.

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Crossref · 10.1002/anie.202410885

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33 of 33 references verified0 citation errors · 0 not checkable

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Authors
Song, C., Yang, D., Wang, C., Tang, Z., Long, Y., Zhang, Y., & Jian, Z.
Affiliations
  • Chinese Academy of Sciences (CN)
  • University of Science and Technology of China (CN)
  • State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Renmin Street 5625 Changchun 130022 China
Corresponding author
Jian, Zhongbao
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2024-09-20
Volume
63
Issue
44
Pages
e202410885-e202410885
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W4401217133
Cited by
29
References
33
Citations by year
2026: 12 · 2025: 16 · 2024: 1
FWCI
4.18
Type
journal article
Language
en
Open access
closed
Locations
  • Angewandte Chemie International Edition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China (22122110, U23B6011)
  • Department of Science and Technology of Jilin Province (20230101347JC)
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
Keywords
late transition metal catalysts, chain transfer agent, molecular weight control, photodegradation

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