Issue 71, 2016, Issue in Progress

A visible-light responsive zirconium metal–organic framework for living photopolymerization of methacrylates

Abstract

Visible-light-induced controlled/living radical polymerization (C/LRP) mediated by photoactive zirconium metal–organic framework (Zr–MOF) NNU-28 has been explored. The photopolymerization is carried out at room temperature under 520 nm monochromatic light. The results show that anthracene-based NNU-28 is a promising heterogeneous sensitizer to initiate the photopolymerization where the robust Zr–MOF exhibits enhanced visible light absorption and characteristics of photoinduced charge generation. The NNU-28 mediated CRP relies on the in situ photoreduction of a Cu(II) complex deactivator to Cu(I) complex activator through an electron transfer process. The photopolymerization of methacrylates shows typical characteristics of controlled radical polymerization, where the as-prepared polymers have controlled molecular weights, narrow molecular weight distribution and high retention of chain-end groups. Besides, the NNU-28 mediated photopolymerization can be temporally and spatially controlled by light. The visible-light-induced polymerization investigated here suggests the promising application of photoactive MOFs for well-designed polymer synthesis.

Graphical abstract: A visible-light responsive zirconium metal–organic framework for living photopolymerization of methacrylates

Supplementary files

Article information

Article type
Paper
Submitted
10 May 2016
Accepted
01 Jul 2016
First published
12 Jul 2016

RSC Adv., 2016,6, 66444-66450

A visible-light responsive zirconium metal–organic framework for living photopolymerization of methacrylates

H. Xing, D. Chen, X. Li, Y. Liu, C. Wang and Z. Su, RSC Adv., 2016, 6, 66444 DOI: 10.1039/C6RA12134A

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