Abstract：
The research outlined a novel approach for creating a sensitive and efficient ratio fluorescent probe for ciprofloxacin (CIP) detection. The method used the biomass materials passionfruit shell and diethylenetriamine as carbon and nitrogen sources, respectively, to prepare blue fluorescent carbon quantum dots (b-CQDs) with an average size of 3.29 nm and a quantum yield of 19.6% by a hydrothermal method. The newly designed b-CQDs/riboflavin ratio fluorescent probe demonstrates a distinct advantage for CIP monitoring, exhibiting a marked increase in fluorescence intensity at 445 nm upon interaction with CIP, while maintaining a stable intensity at 510 nm. In the water system, the I445 nm/I510 nm ratio of the fluorescent probe showed a significant linear relationship with CIP at the concentrations of 0-250 μmol·L-1, and the probe boasts a low detection limit of 0.86 μmol·L-1. The outstanding selectivity, broad detection range, low detection limits, and high quantum yield of the b-CQDs highlight their significant potential in the development of advanced sensing probes for efficient detection of ciprofloxacin, offering promising insights for future sensor technology advancements.
摘要：
该研究概述了一种用于环丙沙星（CIP）检测的灵敏高效比例荧光探针的新方法。该方法使用生物质材料西番莲果壳和二亚乙基三胺作为碳源和氮源，分别,通过水热法制备平均尺寸为3.29nm、量子产率为19.6%的蓝色荧光碳量子点(b-CQDs)。新设计的b-CQDs/核黄素比例荧光探针显示了CIP监测的明显优势，在与CIP相互作用后，在445nm处的荧光强度显着增加，同时在510nm处保持稳定的强度。在水系统中，在浓度为0~250μmol·L-1时,荧光探针的I445nm/I510nm比值与CIP呈显著线性关系,检测下限为0.86μmol·L-1。出色的选择性，检测范围广,低检测限，b-CQDs的高量子产率凸显了其在开发高效检测环丙沙星的先进传感探针方面的巨大潜力，为未来传感器技术的进步提供有希望的见解。
