Preparation and Properties of Magnetic-fluorescent Microporous Polymer Microspheres

doi:10.1007/s40242-018-7413-x

Abstract

Abstract: Microporous microspheres can be used as functional nanomaterial carriers for their microporous structure and higher specific surface area. In this study, magnetic fluorescent polymer microspheres were prepared by incorporating Fe₃O₄ nanoparticles and CdSe/ZnS quantum dots(QDs) into hyper-crosslinked microporous polymer microspheres(HCMPs) via the in situ coprecipitation method and swelling-diffusion. The HCMPs predominantly have micropores, and their specific surface area is as high as 703.4 m²/g. The magnetic-fluorescent microspheres maintain the superparamagnetic behavior of Fe₃O₄, and the saturation magnetization reaches 38.6 A·m²/kg. Moreover, the composite microspheres exhibit an intense emission peak at 530 nm and achieve good fluorescence.

Key words: Microporous polymer, Magnetic-fluorescent polymer microsphere, Hyper-crosslinking, Superparamagne-tism, Quantum dot

ZOU Xiaohu, WEI Zhizhi, DU Jing, WANG Xiaotao, ZHANG Gaowen. Preparation and Properties of Magnetic-fluorescent Microporous Polymer Microspheres[J]. Chemical Research in Chinese Universities, 2018, 34(4): 684-690.

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