title: Synthesis of bi-phase dispersible core-shell FeAu@ZnO magneto-opto-fluorescent nanoparticles.
abstract: Bi-phase dispersible core-shell FeAu@ZnO magneto-opto-fluorescent nanoparticles were synthesized by a modified nanoemulsion process using poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEO-PPO-PEO) as the surfactant. The morphology and crystal structure of the nanoparticles were studied by TEM/HRTEM and XRD. The nanoparticles manifest soft ferromagnetic and/or near superparamagnetic behavior with a small coercivity of ~19 Oe at room temperature. The corresponding magnetic hysteresis curves were elucidated by the modified Langevin equation. The FTIR study confirms the PEO-PPO-PEO molecules on the surface of the nanoparticles. The UV-vis and PL results reveal the well-behaved absorption bands including surface plasmon resonance and multiple visible fingerprint photoluminescent emissions of the nanoparticles dispersed in both hydrophilic and hydrophobic solvents. Moreover, the processes of solvent dispersion-collection of the nanoparticles were demonstrated for application readiness of such core-shell nanostructures.
authors.affiliation: Key Lab of Polyoxometalate Chemistry of Henan Province, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China.
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Li
authors.affiliation: Key Lab of Polyoxometalate Chemistry of Henan Province, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China.
authors.forename: Hong-Ling
authors.initials: HL
authors.lastname: Liu
authors.affiliation: Key Lab of Polyoxometalate Chemistry of Henan Province, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Lab of Polyoxometalate Chemistry of Henan Province, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Fang
authors.affiliation: Key Lab of Polyoxometalate Chemistry of Henan Province, Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China.
authors.forename: Xian-Hong
authors.initials: XH
authors.lastname: Wang
authors.affiliation: E-Techco Group, Shenzhen 518057, China.|Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, China.|Pioneer Research Center for Biomedical Nanocrystals, Korea University, Seoul 136-713, South Korea.
authors.forename: Jun-Hua
authors.initials: JH
authors.lastname: Wu