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Multifunctional magnetic-fluorescent Ni-doped ZnAl2O4 nanoparticles with second biological NIR window fluorescence.
- Source :
-
Materials Research Bulletin . Sep2017, Vol. 93, p310-317. 8p. - Publication Year :
- 2017
-
Abstract
- Nanocrystals with combined properties of magnetic and fluorescence are considered as “multifunctional materials” or “smart materials” which have promising biological applications including dual-modal imaging, biological research, targeted drug delivery, clinical diagnostics and therapeutics. Utilizing a green hydrothermal method, magnetic nanocrystals Ni-doped ZnAl 2 O 4 with broadband emission at ∼1200 nm have been developed as a new type of multifunctional material. The obtained ultrasmall nanocrystals in sub-10 nm range are more easily for body clearance and less toxicity in theory. Ni ions are demonstrated distribute homogeneously in +2 valance state, which provides ferromagnetism in the diamagnetic matrix of ZnAl 2 O 4 . Under the excitation of 670 nm, the whole broad emission band centered at 1200 nm fully covers the second near-infrared window (1.1–1.4 μm). These ultrasmall Ni-doped ZnAl 2 O 4 nanocrystals with magnetic-fluorescent multifunctionality open a door to more efficient and safer biological probes. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00255408
- Volume :
- 93
- Database :
- Academic Search Index
- Journal :
- Materials Research Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 123505684
- Full Text :
- https://doi.org/10.1016/j.materresbull.2017.04.045