New superparamagnetic polymer particles with multiple fluorescence
In the course of our research on paramagnetic polymer particles with fluorescent labels, we recently did succeed in the manufacture of superparamagnetic particles carrying two different coexisting fluorophores. Due to an appropriate design, both emissions can be distinctively observed in one and the same particle. The described particles are of spherical shape and possess a narrow size distribution. Moreover, they show strong superparamagnetism and high fluorescence intensities. Currently, the new superparamagnetic polymer particles can be delivered in the nominal diameter range from 1 through 10 microns. Variations of the applied dye and surface functionalities of the particles are possible within a wide range.