Journal
RSC ADVANCES
Volume 6, Issue 71, Pages 66444-66450Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra12134a
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Funding
- National Natural Science Foundation of China [21473024, 21101023]
- Natural Science Foundation of Jilin Province [20140101228JC]
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education
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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.
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