multispectral emissions of lanthanide-doped gadolinium oxide nanophosphors for cathodoluminescence and near-infrared upconversion/downconversion imaging
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2016
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Abstract
Comprehensive imaging of a biological individual can be achieved by utilizing the variation in spatial resolution, the scale of cathodoluminescence (CL), and near-infrared (NIR), as favored by imaging probe Gd2O3 co-doped lanthanide nanophosphors (NPPs). A series of Gd2O3:Ln3+/Yb3+ (Ln3+: Tm3+, Ho3+, Er3+) NPPs with multispectral emission are prepared by the sol-gel method. The NPPs show a wide range of emissions spanning from the visible to the NIR region under 980 nm excitation. The dependence of the upconverting (UC)/downconverting (DC) emission intensity on the dopant ratio is investigated. The optimum ratios of dopants obtained for emissions in the NIR regions at 810 nm, 1200 nm, and 1530 nm are applied to produce nanoparticles by the homogeneous precipitation (HP) method. The nanoparticles produced from the HP method are used to investigate the dual NIR and CL imaging modalities. The results indicate the possibility of using Gd2O3 co-doped Ln3+/Yb3+ (Ln3+: Tm3+, Ho3+, Er3+) in correlation with NIR and CL imaging. The use of Gd2O3 promises an extension of the object dimension to the whole-body level by employing magnetic resonance imaging (MRI).
| Reference Key |
dung2016nanomaterialsmultispectral
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| Authors | ;Doan Thi Kim Dung;Shoichiro Fukushima;Taichi Furukawa;Hirohiko Niioka;Takumi Sannomiya;Kaori Kobayashi;Hiroshi Yukawa;Yoshinobu Baba;Mamoru Hashimoto;Jun Miyake |
| Journal | progress in neuro-psychopharmacology & biological psychiatry |
| Year | 2016 |
| DOI |
10.3390/nano6090163
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| URL | |
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