Preparation of dyed polymer microspheres by a physical-chemical dual-binding method and their application in lateral flow immunoassay.

Lateral flow immunoassay (LFIA) has shown great competitiveness in point-of-care testing due to its flexibility and simplicity. Dyed polymer microspheres are one of the most widely used marker particles for signal presentation as they are very convenient for visual interpretation, which is one of the most attractive features of LFIA. The color intensity, as the most critical factor, is directly related to the visual effect.

Anisotropic Magnetic Polymeric Particles with a Controllable Structure via Seeded Emulsion Polymerization.

Magnetic polymer composites have been widely utilized in potential applications in material science, such as reduction of dyes, immunodiagnostics, biomedicals, and magnetically controllable photonic crystals owing to large surface areas, fast separation, and recyclable performance. In this work, anisotropic magnetic particles were prepared by seeded emulsion polymerization, with morphologies of "FeO-shell", "hemisphere-like", "raspberry-like", "multiple lobes-like", and "sandwich-like". Poly(styrene/divinylbenzene/mono-2-(methacryloxy)ethyl succinate)@ FeO (P(St/DVB/MMES)@FeO) were the seed microspheres, and P(St/DVB/MMES)@FeO@polymer particles are achieved by seeded emulsion polymerizations.

Fabrication of Yolk-Shell FeO@NiSiO/Ni Microspheres for Efficient Purification of Histidine-Rich Proteins.

Magnetic materials perform well in the purification of histidine-rich proteins (His-proteins). In this work, a facile fabrication of yolk-shell magnetic FeO@NiSiO/Ni microspheres for the efficient purification of His-proteins has been reported. Yolk-shell FeO@NiSiO microspheres were prepared via hydrothermal reaction.