Journal
TALANTA
Volume 135, Issue -, Pages 145-148Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2014.12.029
Keywords
Carbon dots; Fluorescence; Quercetin detection; Organosilane
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Funding
- National Natural Science Foundation of China [21174103, 21374078, 31200719]
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The organosilane-functionalized carbon dots (SiCDs) were synthesized using citric acid with N-(b-aminoethyl)g-aminopropyl methyldimethoxy silane (AEAPMS). The as-synthesized SiCDs were characterized by IR, TEM, XPS, NMR and fluorescence. The SiCDs showed a strong emission at 455 nm with excitation at 365 nm. The SiCDs exhibited analytical potential as sensing probes for guercetin (QCT) determination. pH effect, temperature effect, interferences, and analytical performance of the method were investigated. It suggested that SiCDs exhibited high sensitivity and selectivity toward QCT: the linear ranges of SiCDs were estimated to be 0-40 mu M while the limit of detection (LOD) was calculated to be 79 nM. (C) 2015 Published by Elsevier B.V.
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