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This paper reported a core–shell structured site-specific delivery system with a light switch triggered by low energy light (λ=510nm). Its core was composed of supermagnetic Fe3O4 nanoparticles for magnetic guiding and targeting. Its outer shell consisted of mesoporous silica molecular sieve MCM-41 which offered highly ordered hexagonal tunnels for cargo capacity. A light switch N1-(4aH-cyclopenta[1,2-b:5,4-b′]dipyridin-5(5aH)-ylidene)benzene-1,4-diamine...
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