Premium
M 2+ Doping Induced Simultaneous Phase/Size Control and Remarkable Enhanced Upconversion Luminescence of NaLnF 4 Probes for Optical‐Guided Tiny Tumor Diagnosis
Author(s) -
Li Youbin,
Li Xiaolong,
Xue Zhenluan,
Jiang Mingyang,
Zeng Songjun,
Hao Jianhua
Publication year - 2017
Publication title -
advanced healthcare materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.288
H-Index - 90
eISSN - 2192-2659
pISSN - 2192-2640
DOI - 10.1002/adhm.201601231
Subject(s) - coprecipitation , photon upconversion , doping , materials science , phase (matter) , luminescence , nanocrystal , hexagonal crystal system , hexagonal phase , nanotechnology , analytical chemistry (journal) , optoelectronics , crystallography , inorganic chemistry , chemistry , organic chemistry , chromatography
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 M 2+ doping (M = Mg 2+ , Co 2+ ) has been demonstrated. The phase transformation from cubic to hexagonal is readily achieved by doping M 2+ . Compared with Mg‐free sample, a remarkable enhancement of overall UCL (≈27.5 times) is obtained by doping Mg 2+ . 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.