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Highly luminescent S,N co‐doped carbon quantum dots‐sensitized chemiluminescence on luminol–H 2 O 2 system for the determination of ranitidine
Author(s) -
Chen Jianqiu,
Shu Juan,
Chen Jiao,
Cao Zhiran,
Xiao An,
Yan Zhengyu
Publication year - 2017
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.3173
Subject(s) - chemiluminescence , luminol , photoluminescence , quantum yield , detection limit , spectroscopy , luminescence , fourier transform infrared spectroscopy , chemistry , analytical chemistry (journal) , quantum dot , materials science , photochemistry , nuclear chemistry , fluorescence , chromatography , nanotechnology , chemical engineering , optoelectronics , optics , engineering , physics , quantum mechanics
S,N co‐doped carbon quantum dots (N,S‐CQDs) with super high quantum yield (79%) were prepared by the hydrothermal method and characterized by transmission electron microscopy, photoluminescence, UV–Vis spectroscopy and Fourier transformed infrared spectroscopy. N,S‐CQDs can enhance the chemiluminescence intensity of a luminol–H 2 O 2 system. The possible mechanism of the luminol–H 2 O 2 –(N,S‐CQDs) was illustrated by using chemiluminescence, photoluminescence and ultraviolet analysis. Ranitidine can quench the chemiluminescence intensity of a luminol–H 2 O 2 –N,S‐CQDs system. So, a novel flow‐injection chemiluminescence method was designed to determine ranitidine within a linear range of 0.5–50 μg ml −1 and a detection limit of 0.12 μg ml −1 . The method shows promising application prospects.
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