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Development of multifunctional of core-shell type quantum dot-embedded silica nanoparticles
경산,정철환,전봉현,이윤식 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
Multifunctional nanoparticles (NPs) can offer great potentials for medical and physiological research. Numerous studies have been reported on multimodal imaging, simultaneous diagnosis, therapy, and cell separation. Herein, we developed core-shell type quantum dot-embedded silica NPs (SiO<sub>2</sub>@QDs@SiO<sub>2</sub> NPs) as a multifunctional nanomaterial platform. Various functionalities can be easily introduced to the silica core or the shell layer of this nanostructure. We prepared and analyzed a series of SiO<sub>2</sub>@QDs@SiO<sub>2</sub> derived multifunctional NPs. First, using silica coated iron oxide NPs, we built magnetic core-inserted NPs (Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@QDs@SiO<sub>2</sub> NPs) for cell separation. Second, through surface polymerization with diacetylene moiety, we synthesized surface-polymerized NPs (SiO<sub>2</sub>@QDs@SiO<sub>2</sub>@ PDA NPs) for dual fluorescence encoding.