On March 18, 2013, Jung, Bong Hyeon; Lee, Chang Su; Jang, Hui Hyeon published a patent.Formula: C15H24O2 The title of the patent was Fluorescent magnetic nanocomposite formed by reverse micelle method with excellent optical and magnetic properties. And the patent contained the following:
The present invention relates to a fluorescent magnetic nanocomposite, and a method for manufacturing the same. The fluorescent magnetic nanocomposite comprises hydrophobic fluorescent polymer and hydrophobic magnetic nanoparticle that comprise a core part; and a silica shell that surrounds the core part. The manufacturing method involves following steps: (i) adding the hydrophobic fluorescent polymer (0.8-1.0 parts by weight) and the hydrophobic magnetic nanoparticle (0.5-0.6 parts by weight) in a surfactant (100 parts by weight), and stirring to form a reverse micelle; (ii) adding silica precursor (45-50 parts by weight) and catalyst (25-30 parts by weight) to the formed reverse micelle (100 parts by weight), and stirring to produce the fluorescent magnetic nanocomposite; and (iii) performing magnetic separation or centrifugation by adding alc., and purifying by washing. The surfactant is nonionic surfactant or ionic surfactant. The nonionic surfactant is selected from Triton X-100, nonyl Ph tetra-ethylene glycol, nonyl Ph penta-ethylene glycol, sodium lauryl sulfate, etc. The ionic surfactant is selected from sodium dodecyl sulfate, alkyl sulfate, sodium alkane sulfonate, etc. The hydrophobic fluorescent polymer is selected from poly(di(2-methoxy-5-(2-ethylhexyloxy))-2,7-(9,9- dioctylfluorene)), polyfluorene, poly(p-phenylene), poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylene vinylene), etc. The hydrophobic magnetic nanoparticle is selected from Fe2O3, Fe3O4, FePt and cobalt. The silica precursor is selected from tetra-Me orthosilicate, tetra-Et orthosilicate, tetra-Pr orthosilicate and mixture of these. The catalyst is aqueous ammonia solution that contains ammonia concentration (25-28 weight%). The fluorescent magnetic nanocomposite has a particle diameter of 60-70 nm. According to the present invention, the fluorescent magnetic nanocomposite has excellent optical and magnetic properties. The method enables manufacturing the nanocomposite having core/shell structure in uniform size. The fluorescent magnetic nanocomposite has excellent optical stability and cell penetration, and has no cytotoxicity. The fluorescent magnetic nanocomposite changes mol. structure of the fluorescent polymer, and produces nanoparticle of various wavelengths, thus effectively utilized in various biol. areas like bio diagnosis, anal., etc. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Formula: C15H24O2
The Article related to fluorescent magnetic nanocomposite optical reverse micelle, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Formula: C15H24O2
Referemce:
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