期刊
RSC ADVANCES
卷 10, 期 12, 页码 6850-6857出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra00401d
关键词
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资金
- National Science Foundation of China [U1804128, 51973201]
- Key R&D and Promotion Special Program of Henan Province [2018-966]
- 111 project [D18023]
- National Science Foundation for Young Scientists of China [51703206]
- National Key R&D Program of China [2017YFB0307600]
- Postdoctoral Research grand in Henan Province [1901007]
A novel raspberry-like gamma-Fe2O3@carbon dot (CD) nanocatalyst was prepared and applied for photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization. The nanocatalyst was found to be an efficient photocatalyst in visible light-regulated PET-RAFT polymerization owing to the oxidative quenching mechanism between the photoexcited gamma-Fe2O3@CDs and the RAFT agent in the PET process. Notably, polymerization can be reversibly ceased in the absence of light or under an external magnetic field. The superparamagnetic nature and high saturation magnetization value (similar to 30.4 emu g(-1)) of the nanocatalyst contribute to convenient recycling of the nanocatalyst after polymerization. The PET-RAFT polymerization with the nanocatalyst before and after recycling was investigated, which displayed all the characteristics of controlled/living polymerization systems.
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