《Atom Transfer Radical Polymerization Driven by Near-Infrared Light with Recyclable Upconversion Nanoparticles》 was written by Zhang, Wenjie; He, Jianhao; Lv, Chunna; Wang, Qianyi; Pang, Xinchang; Matyjaszewski, Krzysztof; Pan, Xiangcheng. Product Details of 7789-45-9This research focused onupconversion nanoparticle photo ATRP methacrylate acrylate. The article conveys some information:
Near-IR (NIR) photoinduced chem. processes are highly attractive for specific applications owing to the deep penetration of NIR into the nontransparent materials including biol. and synthetic materials. Robust NIR photoinduced atom transfer radical polymerization (photoATRP) was achieved using upconversion nanoparticles (UCNPs) as an internal light converter to turn a 980 nm NIR light to the wavelength of UV/vislight. This NIR photoATRP was capable of polymerizing both hydrophobic and hydrophilic monomers at a low loading of ppm concentrations of the CuBr2/tris(2-pyridylmethyl)amine catalyst under the irradiation of a 980 nm NIR light (4 W/cm2) and UCNPs with reusable performance, providing well-defined polymers with predetermined mol. weight, low dispersity, and excellent chain-end fidelity. The switching of light “”on/off”” showed an excellent temporal control of the polymerization The NIR photoATRP exhibited excellent penetrations through several visible light-proof barriers using NIR light, and it may provide future directions of photopolymerization in nontransparent systems, especially biol. systems containing photosensitive moieties. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Product Details of 7789-45-9)
Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Product Details of 7789-45-9
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”