期刊
ADVANCED HEALTHCARE MATERIALS
卷 6, 期 10, 页码 -出版社
WILEY
DOI: 10.1002/adhm.201601231
关键词
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资金
- National Natural Science Foundation of China [21671064]
- Doctoral Program of Higher Education of China [20114301120006]
- Scientific Research Fund of Hunan Provincial Education Department [13B062]
- Hunan Provincial Innovation Foundation
Doping has played a vital role in constructing desirable hybrid materials with tunable functions and properties via incorporating atoms into host matrix. Herein, a simple strategy for simultaneously modifying the phase, size, and upconversion luminescence (UCL) properties of the NaLnF(4) (Ln = Y, Yb) nanocrystals by high-temperature coprecipitation through nonequivalent M2+ doping (M = Mg2+, Co2+) has been demonstrated. The phase transformation from cubic to hexagonal is readily achieved by doping M2+. Compared with Mg-free sample, a remarkable enhancement of overall UCL (approximate to 27.5 times) is obtained by doping Mg2+. Interestingly, owing to the efficient UCL, red UCL-guided tiny tumor (down to 3 mm) diagnosis is demonstrated for the first time. The results open up a new way of designing high efficient UCL probe with combination of hexagonal phase and small size for tiny tumor detection.
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