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Luminescent Nanocrystals for Nonenzymatic Glucose Concentration Determination
Author(s) -
Wang Leyu,
Li Yadong
Publication year - 2007
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.200700005
Subject(s) - luminescence , ethylene glycol , aqueous solution , fluorescence , nanocrystal , nanoparticle , chemistry , sodium fluoride , nuclear chemistry , inorganic chemistry , fluoride , materials science , nanotechnology , organic chemistry , physics , optoelectronics , quantum mechanics
By using a facile, wet‐chemical approach, luminescent LaF 3 :Ce 3+ /Tb 3+ single‐crystal nanoparticles were prepared from nitrate and sodium fluoride precursors in a mixture of ethanol and ethylene glycol. These nanoparticles were functionalized with glucose. A novel fluorescence resonance energy transfer method for nonenzymatic glucose determination has been developed by using these glucose‐modified nanocrystals. Under the chosen conditions, concentrations of glucose between 0.5 and 25.0 mmol L −1 in aqueous solutions were successfully determined. Owing to their high luminescence and good dispersibility in water, these nanocrystals are also potential fluorescent biolabels for other biological and clinical applications, such as in fluorescence imaging and for immunoassays.