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Research Conducted at Hunan Normal University Has Provided New Information about Nanorods

May 13, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators discuss new findings in Nanorods. According to news reporting originating in Changsha, People's Republic of China, by NewsRx journalists, research stated, "In this paper, multi-functional hexagonal phase NaErF4:Yb nanorods were synthesized by a facile hydrothermal method. The upconversion luminescence (UCL) intensity and red to green ratio of the multi-functional NaErF4 nanorods can be improved by Yb(3+) doping."

The news reporters obtained a quote from the research from Hunan Normal University, "More importantly, owing to the decreased distance of Er and Yb, the significant enhancement of red UCL can be obtained, which is different to the usual green UCL of Yb/Er doped NaYF4 host. In addition, the intensity of UCL is strongest when the Yb(3+)-doped concentration reached 30%. The in vitro cell imaging and localized UCL spectra taken from HeLa cells revealed that these NaErF4: 30% Yb(3+) nanorods are ideal nanoprobes with absence of autofluorescence for optical bioimaging. Moreover, these nanorods possess large X-ray absorption ions (Er(3+) and doped Yb(3+)), and were successfully used as contrast agents for in vivo X-ray bioimaging for the first time. In addition to the excellent UCL and X-ray absorption properties, these nanorods present significant paramagnetic properties and can be used as T2-weighted magnetic resonance imaging (MRI) agents."

According to the news reporters, the research concluded: "Therefore, these enhanced red UCL NaErF4 nanocrystals with excellent paramagnetic properties and X-ray absorption properties can be used as promising multi-modal nanoprobes for optical bioimaging, MRI, computed X-ray tomography (CT), and may have potential applications in bioseparation."

For more information on this research see: Multi-functional NaErF4:Yb nanorods: enhanced red upconversion emission, in vitro cell, in vivo X-ray, and T2-weighted magnetic resonance imaging. Nanoscale, 2014;6(5):2855-60. (Royal Society of Chemistry -; Nanoscale -

Our news correspondents report that additional information may be obtained by contacting H. Wang, College of Physics and Information Science, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, Hunan, People's Republic of China. Additional authors for this research include W. Lu, T. Zeng, Z. Yi, L. Rao, H. Liu and S. Zeng (see also Nanorods).

Keywords for this news article include: Asia, Changsha, Nanotechnology, Emerging Technologies, People's Republic of China.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Life Science Weekly

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