title: A new CoFe(2)O(4)-Cr(2)O(3)-SiO(2) fluorescent magnetic nanocomposite.
abstract: A combined sonochemical co-precipitaion method has been developed for the synthesis of a CoFe(2)O(4)-Cr(2)O(3)-SiO(2) magnetic nanocomposite. The synthesis involved the pre-synthesis of CoFe(2)O(4)-Cr(2)O(3) nanoparticles, which were subsequently coated with SiO(2) by treatment with tetraethyl orthosilicate. It was observed that the as-prepared CoFe(2)O(4)-Cr(2)O(3)-SiO(2) nanocomposite exhibits photoluminescence properties without the addition of any external fluorescent marker. The fluorescent magnetic nanoparticles (FMNPs) had a typical diameter of 30 ± 5 nm and a saturation magnetization of 5.1 emu g(-1) at room temperature. This as-prepared nanocomposite was used for staining cultured HeLa cells for fluorescence imaging.
authors.affiliation: Department of Chemistry, Gauhati University, Guwahati, 781014 Assam, India.
authors.forename: Chandan
authors.initials: C
authors.lastname: Borgohain
authors.forename: Kula Kamal
authors.initials: KK
authors.lastname: Senapati
authors.forename: Debabrata
authors.initials: D
authors.lastname: Mishra
authors.forename: Kanak Ch
authors.initials: KCh
authors.lastname: Sarma
authors.forename: Prodeep
authors.initials: P
authors.lastname: Phukan
mesh_terms: D002470:Cell Survival; D002857:Chromium / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D016503:Drug Delivery Systems; D005290:Ferric Compounds / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission / Q000379:methods; D053761:Nanocomposites / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D012822:Silicon Dioxide / Q000737:chemistry*; D013778:Tetrazolium Salts / Q000494:pharmacology; D013844:Thiazoles / Q000494:pharmacology; D014466:Ultraviolet Rays
chemical_list: D005290:Ferric Compounds; D005456:Fluorescent Dyes; D013778:Tetrazolium Salts; D013844:Thiazoles; D002857:Chromium; C000499:ferric oxide; D003035:Cobalt; D012822:Silicon Dioxide; C022616:thiazolyl blue