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Lanthanide‐Doped Multicolor GdF 3 Nanocrystals for Time‐Resolved Photoluminescent Biodetection
Author(s) -
Ju Qiang,
Liu Yongsheng,
Tu Datao,
Zhu Haomiao,
Li Renfu,
Chen Xueyuan
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201101170
Subject(s) - photoluminescence , doping , nanocrystal , materials science , lanthanide , nanotechnology , luminescent measurements , optoelectronics , luminescence , chemistry , ion , organic chemistry
Lanthanide lights : Water‐soluble lanthanides (Ln 3+ )‐doped GdF 3 nanocrystals synthesized through a facile one‐step route can be used as time‐resolved photoluminescence biolabels to detect trace amounts of biomolecules (avidin of 74 p M ) and robust MRI positive‐contrast agents. Multicolor emissions, spanning a wide spectral region, can be achieved in Ln 3+ ‐doped GdF 3 nanocrystals under single‐wavelength excitation by finely tuning the combinations of Ln 3+ dopants and their concentrations (see figure).