期刊
MICROCHIMICA ACTA
卷 189, 期 2, 页码 -出版社
SPRINGER WIEN
DOI: 10.1007/s00604-022-05176-x
关键词
Para-sulfonatocalix[4]arene capped AuNPs; Host-guest recognition; Sulfamethazine; Colorimetric sensor
资金
- National Natural Science Foundation of China [61875114, 21776324]
- National Key R&D Program of China [2018YFD0800700]
- National Ten Thousand Talent Plan [2207080051]
- Key-Area Research and Development Program of Guangdong Province [2019B110209003]
- Guangdong Basic and Applied Basic Research Foundation [2019B1515120058, 2020A1515011149]
- Fundamental Research Funds for the Central Universities [19lgzd25]
- Hundred Talent Plan from Sun Yat-sen University [201602]
A label-free Sulfamethazine (SMZ) sensor based on para-sulfonatocalix[4]arene-(pSC(4))-capped gold nanoparticles (pSC(4)-AuNPs) was reported for colorimetric detection through the host-guest interaction. The aggregation of -pSC(4)-AuNPs caused by the presence of SMZ can be observed through colorimetric assay. The method showed a good linear relationship, low detection limit, and high recoveries.
Sulfamethazine (SMZ) is one of the most used broad-spectrum antibiotics owing to its low cost and high efficacy towards bacterial diseases. This workreports a novel label-free SMZ sensor based on para-sulfonatocalix[4]arene -(pSC(4)) capped gold nanoparticles -(pSC(4)-AuNPs) for colorimetric detection through the host-guest interaction. The existence of SMZ resulted in the aggregation of -pSC(4)-AuNPs and can be observed through colorimetric assay. A good linear relationship in the range 2.5 similar to 20 nM was obtained with a correlation coefficient of 0.9908. The limit of detection for SMZ was 1.39 nM. High recoveries (90.18-107.06%) were obtained, and RSD ranged from 1.21 to 2.05%. The color changes can be observed from red to gray within 10 min. Combining the supermolecule's recognition and AuNP's optical performance, the method paves a new, easy, and rapid way for small target sensing.
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