Centre for Material Chemistry, Karpagam Academy of Higher Education, Coimbatore, India.
Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore, India.
Luminescence. 2024 Aug;39(8):e4846. doi: 10.1002/bio.4846.
Antibiotic residues persist in the environment and represent serious health hazards; thus, it is important to develop sensitive and effective detection techniques. This paper presents a bio-inspired way to make water-soluble fluorescent polymer carbon dots (PCDs@PVA) by heating biomass precursors and polyvinyl alcohol (PVA) together. For example, the synthesized PCDs@PVA are very stable with enhanced emission intensity. This property was observed in a wide range of environmental conditions, including those with changing temperatures, pH levels, UV light, and ionic strength. PCDs@PVA detected the antibiotic chlortetracycline (CTCs) with great selectivity against structurally related compounds and a low detection limit of 20 nM, demonstrating outstanding sensitivity and specificity. We confirmed the sensor's practical application through real sample analysis, yielding recovery rates of 98%-99% in samples of milk, honey, and river water. The synthesized PCDs@PVA fluorescence sensor was successfully used for CTCs detection in real samples.
抗生素残留存在于环境中，对健康构成严重威胁，因此开发灵敏有效的检测技术至关重要。本文提出了一种生物启发的方法，通过加热生物质前体和聚乙烯醇（PVA）来制备水溶性荧光聚合物碳点（PCDs@PVA）。例如，合成的 PCDs@PVA 非常稳定，发射强度增强。这种特性在广泛的环境条件下都能观察到，包括温度、pH 值、紫外光和离子强度变化等条件。PCDs@PVA 对结构相关的化合物具有很高的选择性，检测限低至 20nM，表现出出色的灵敏度和特异性。我们通过实际样品分析证实了传感器的实际应用，在牛奶、蜂蜜和河水样品中的回收率为 98%-99%。该合成的 PCDs@PVA 荧光传感器成功地用于实际样品中 CTCs 的检测。
