In this study, a colorimetric and fluorescent dual-mode probe based on water-dispersible silicon nanoparticles (SiNPs) was fabricated via a one-step hydrothermal method by using (3-aminopropyl)triethoxysilane (APTES) as silicon source and...
The novel water dispersible SiNPs which were prepared by a one-step hydrothermal method were applied to the detection of Cr2O72−via internal filtering effect (IFE) and a fluorescent paper sensor for visual detection of Cr2O72− was developed.
Curcumin, an active ingredient of Curcuma longa, which possesses good biological and pharmacological activities, is effective in treating of many diseases. Developing simple and sensitive methods for detection of curcumin...
In this work, water-soluble fluorescent silicon nanoparticles
(SiNPs)
were prepared by one-pot hydrothermal method using 3-(2-aminoethylamino)propyldimethoxymethylsilane
(AEAPDMMS) as a silicon source and amidol as a reducing agent. The
prepared SiNPs showed bright green fluorescence, excellent stability
against photobleaching, salt tolerance, temperature stability, and
good water solubility. Due to the internal filtration effect (IFE),
rutin could selectively quench the fluorescence of the SiNPs. Based
on such phenomena, a highly sensitive fluorescence method was established
for rutin detection. The linear range and limit of detection (LOD)
were 0.05–400 μM and 15.2 nM, respectively. This method
was successfully applied to detect rutin in the samples of rutin tablets,
Sophora japonica
, fry
Sophora japonica
, and
S. japonica
carbon with satisfactory
recovery.
Crocin, the main component of gardenia yellow pigment, is a rare natural water-soluble carotenoid which is effective in treating many diseases owing to its superior anti-oxidant activities. Developing simple methods...
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