An Oxygen Paradox : Catalytic Use of Oxygen in Radical Photopolymerization

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

43 Scopus Citations
View graph of relations

Author(s)

  • Liwen Zhang
  • Chenyu Wu
  • Kenward Jung
  • Yun Hau Ng
  • Cyrille Boyer

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)16811–16814
Journal / PublicationAngewandte Chemie (International Edition)
Volume58
Issue number47
Online published3 Sept 2019
Publication statusPublished - 18 Nov 2019

Abstract

A peculiar radical polymerization reaction is presented in which oxygen serves as a cocatalyst, alongside triethylamine, to provide activation with light in the far-red (690 nm, 3 mW cm-2) of the PET-RAFT process in the presence of zinc(II) (2,3,7,8,12,13,17,18-octaethyl-5,10,15,20-tetraphenylporphyrin) as photocatalyst. Apart from the ability to exert temporal control by switching the light on or off, this system possesses the exciting capability of inducing temporal control by removal or reintroduction of oxygen. Furthermore, this multicomponent catalytic system was typified by controlled polymerizations of various acrylate and acrylamide monomers, which all resulted in well-defined polymers with low dispersity (<1.2). The process displayed excellent living characteristics that were demonstrated through chain extensions and a range of degrees of polymerization (200-1600).

Research Area(s)

  • controlled/living radical polymerization, far red light, oxygen tolerance, PET-RAFT, CHAIN TRANSFER POLYMERIZATION, MECHANISM, FLUORESCENT, OCEAN, RISE

Citation Format(s)

An Oxygen Paradox: Catalytic Use of Oxygen in Radical Photopolymerization. / Zhang, Liwen; Wu, Chenyu; Jung, Kenward et al.
In: Angewandte Chemie (International Edition), Vol. 58, No. 47, 18.11.2019, p. 16811–16814.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review