title: Fabrication and characterization of magnetic mesoporous silica nanospheres covalently bonded with europium complex.
abstract: A novel multifunctional nanocomposite has been developed by combining the magnetic (Fe3O4) cores encapsulated in the mesoporous silica nanospheres and the luminescent Eu(TTA)3phen complex covalently bonded to the framework of mesoporous silica through a chelate ligand 5-[N,N-bis-3-(triethoxysilyl)propyl]ureyl-1,10-phenanthroline (phen-Si). The obtained nanocomposite is denoted as Eu(TTA)3phen-MMS. It has been well characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), N2 adsorption/desorption, Quantum Design SQUID magnetometer and photoluminescence spectroscopy, respectively. The results demonstrated that Eu(TTA)3phen-MMS nanocomposite possess superparamagnetic behavior, intense red emission and mesostructures simultaneously.
authors.affiliation: State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, China. hongjie@ciac.jl.cn.
authors.forename: Jing
authors.initials: J
authors.lastname: Feng
authors.forename: Wei-Qiang
authors.initials: WQ
authors.lastname: Fan
authors.forename: Shu-Yan
authors.initials: SY
authors.lastname: Song
authors.forename: Ying-Ning
authors.initials: YN
authors.lastname: Yu
authors.forename: Rui-Ping
authors.initials: RP
authors.lastname: Deng
authors.forename: Hong-Jie
authors.initials: HJ
authors.lastname: Zhang
mesh_terms: D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D054118:Nanospheres / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D011789:Quantum Theory; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D058185:Magnetite Nanoparticles; D009942:Organometallic Compounds; D005063:Europium; D012822:Silicon Dioxide