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Silver‐doped graphite carbon nitride nanosheets as fluorescent probe for the detection of curcumin
Author(s) -
Yang Haifen,
Li Xuebing,
Wang Xinxv,
Chen Wenfang,
Bian Wei,
Choi Martin M. F.
Publication year - 2018
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3509
Subject(s) - curcumin , fluorescence , detection limit , materials science , quenching (fluorescence) , graphite , carbon nitride , carbon fibers , nuclear chemistry , nanotechnology , analytical chemistry (journal) , chemistry , chromatography , photocatalysis , organic chemistry , metallurgy , biochemistry , physics , composite number , composite material , catalysis , quantum mechanics
Green fluorescent silver (Ag)‐doped graphite carbon nitride (Ag‐g‐C 3 N 4 ) nanosheets have been fabricated by an ultrasonic exfoliating method. The fluorescence of the Ag‐g‐C 3 N 4 nanosheets is quenched by curcumin. The fluorescence intensity decreases with the increase in the concentration of curcumin, indicating that the Ag‐g‐C 3 N 4 nanosheets can function as a non‐toxic and facile fluorescence probe to detect curcumin. The fluorescence intensity of Ag‐g‐C 3 N 4 nanosheets shows a linear relationship to curcumin in the concentration range 0.01–2.00 μM with a low detection limit of 38 nM. The fluorescence quenching process between curcumin and Ag‐g‐C 3 N 4 nanosheets mainly is based on static quenching. The fluorescent probe has been successfully applied to analyse curcumin in human urine and serum samples with satisfactory results.