A versatile approach for the preparation of end-functional polymers and block copolymers by stable radical exchange reactions

Yonca Alkan Goksu, Gorkem Yilmaz, Yusuf Yagci*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A versatile strategy for the preparation of end-functional polymers and block copolymers by radical exchange reactions is described. For this purpose, first polystyrene with 2,2,6,6-tetramethylpiperidine-1-oxyl end group (PS-TEMPO) is prepared by nitroxide-mediated radical polymerization (NMRP). In the subsequent step, these polymers are heated to 130 °C in the presence of independently prepared TEMPO derivatives bearing hydroxyl, azide and carboxylic acid functionalities, and polymers such as poly(ethylene glycol) (TEMPO-PEG) and poly(ε-caprolactone) (TEMPO-PCL). Due to the simultaneous radical generation and reversible termination of the polymer radical, TEMPO moiety on polystyrene is replaced to form the corresponding end-functional polymers and block copolymers. The intermediates and final polymers are characterized by 1H NMR, UV, IR, and GPC measurements.

Original languageEnglish
Pages (from-to)2387-2395
Number of pages9
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume57
Issue number24
DOIs
Publication statusPublished - 15 Dec 2019

Bibliographical note

Publisher Copyright:
© 2019 Wiley Periodicals, Inc.

Funding

This work was supported by the Istanbul Technical University Research Fund (Project No. 41873).

FundersFunder number
Istanbul Technical University Research Fund41873

    Keywords

    • block copolymer
    • nitroxide mediated radical polymerization
    • radical coupling
    • stable radical
    • telechelic polymer

    Fingerprint

    Dive into the research topics of 'A versatile approach for the preparation of end-functional polymers and block copolymers by stable radical exchange reactions'. Together they form a unique fingerprint.

    Cite this