A tailored molecular imprinting ratiometric fluorescent sensor based on red/blue carbon dots for ultrasensitive tetracycline detection
- Resource Type
- Article
- Authors
- Xiqing Liu; Tao Wang; Wenjuan Wang; Zhiping Zhou; Yongsheng Yan
- Source
- Journal of Industrial and Engineering Chemistry, 72(0), pp.100-106 Apr, 2019
- Subject
- 화학공학
- Language
- English
- ISSN
- 1876-794X
1226-086X
The molecular imprinting ratiometricfluorescence sensor has exhibited great potential in biological andenvironmental detection because of the combination between the excellent selectivity of molecularimprinting technique and outstanding robustness of ratiometric measurement methods On this basis,two kinds of different well-resolved wavelengths and high-fluorescent carbon dots (CDs) were preparedby various solvent extraction using osmanthus fragrans leaves as carbon source. Then the ratiometricfluorescence sensor (MIPs@rCDs/bCDs@SiO2) has been constructed by the obtained CDs which the redemissionCDs (rCDs) were used to responsive signal and the blue-emission CDs (bCDs) was served asreference signal and applied for highly selective and excellent sensitive detection of tetracycline (TC). Under optimum conditions, the ratiometricfluorescence MIPs@rCDs/bCDs@SiO2 sensor has alsoexhibited lower detection limit of 1.19 nM and the linear range of 0–50 nM. The ratiometricfluorescencesensor was further successfully employed to the determination of TC in water samples gathered fromlocal river water and tap water, indicating its great worth toward water sample analysis in complicatedenvironments.