magnetic, fluorescence and transition metal ion response properties of 2,6-diaminopyridine modified silica-coated fe3o4 nanoparticles

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ID: 181047
2016
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Abstract
Multi-functional nanoparticles possessing magnetic, fluorescence and transition metal ion response properties were prepared and characterized. The particles have a core/shell structure that consists of silica-coated magnetic Fe3O4 and 2,6-diaminopyridine anchored on the silica surface via organic linker molecules. The resultant nanoparticles were found by transmission electron microscopy to be well-dispersed spherical particles with an average diameter of 10–12 nm. X-ray diffraction analysis suggested the existence of Fe3O4 and silica in/on the particle. Fourier transform infrared spectra revealed that 2,6-diaminopyridine molecules were successfully covalently bonded to the surface of magnetic composite nanoparticles. The prepared particles possessed an emission peak at 364 nm with an excitation wavelength of 307 nm and have a strong reversible response property for some transition metal ions such as Cu2+ and Zn2+. This new material holds considerable promise in selective magneto separation and optical determination applications.
Reference Key
zhai2016moleculesmagnetic, Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Yunhui Zhai;Ruijuan Song;Changhu Zhang;Qun He;Quan Han;Yingjuan Qu
Journal Journal of ethnopharmacology
Year 2016
DOI
10.3390/molecules21081066
URL
http://www.mdpi.com/1420-3049/21/8/1066
Keywords
fluorescence magnetic metal ions responseorganic chemistry

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