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Polymer‐based magnetic particles have been widely used for the separation of biological samples including nucleic acids, proteins, virus, and cells. Existing magnetic particles are almost prepared by coating polymers on magnetic nanoparticles (NPs). However, this strategy usually encounters the problem of poor magnetic NPs loading capacity. Here, a series of nanofractal magnetic particles (nanoFMPs) synthesized by a strategy of mediator monomer regulated emulsion interfacial polymerization is presented, which allows effective magnetic NPs loading and show efficient nucleic acid separation performance. The mediator monomers facilitate the dispersion of magnetic NPs in internal phase to achieve higher loading, and the hydrophilic monomers use electrostatic interactions to form surface nanofractal structures with functional groups. Compared with magnetic particles without nanofractal structure, nanoFMPs exhibit a higher nucleic acid extraction capability. This strategy offers an effective and versatile way for the synthesis of nanoFMPs toward efficient separation in various fields from clinical diagnosis to food safety and environmental monitoring. [ABSTRACT FROM AUTHOR]

A variety of methyl N-aryl oxamates were synthesized using poly(ethylene glycol) (PEG) as a soluble polymer support and a monoproctection group with excellent yields. [ABSTRACT FROM AUTHOR]

The Li-rich layered cathode material Li 1.165 Mn 0.501 Ni 0.167 Co 0.167 O 2 with porous structure has been successfully synthesized through a facile co-precipitation approach followed with a high-temperature calcination treatment, adopting polymer microsphere (PSA) as a template and conductive agent. The PSA-assisted Li 1.165 Mn 0.501 Ni 0.167 Co 0.167 O 2 composite exhibits remarkably improved cycling stability and rate capability compared with the bare composite. It delivers a high initial discharge capacity of 267.0 mA h g −1 at 0.1 C (1 C=250 mA g −1 ) between 2.0 V and 4.65 V. A discharge capacity of 214.9 mA h g −1 is still obtained after 100 cycles. Furthermore, the diffusion coefficients of Li + investigated by the cyclic voltammetry technique are approximately 10 −15 –10 −14 cm 2 s −1 . Such outstanding performance is mainly ascribed to: on one hand, the carbon residue of PSA after being calcined at high temperature contributes to enhance the electronic conductivity of the electrode and alleviates the volume changes during the Li + -insertion/extraction, leading to an improved rate capability; on the other hand, the unique porous structure and small particle size are conductive to increase the exposed electrochemical active surface, shorten Li + diffusion distance and thus enhance the lithium storage capacity. [ABSTRACT FROM AUTHOR]