Ratiometric fluorescent sensors have shown great prospect in chemical monitoring and recognition due to its high intuitiveness, accurateness, and visualization. In this work, the ratiometric fluorescent sensors, which includes a blue fluorescent Carbon quantum dots (CQDs) as internal standard material, and a red fluorescent boric acid-modified CdTe QDs as response signal. Then we choose dopamine (DA) as template, 3-phenylboronic acid (APBA) for functional monomers, tetraethyl orthosilicate (TEOS) for cross-linker to synthesize double ratio molecularly imprinted polymers (DR-MIPs) that can identify dopamine selectively and sensitively. The DR-MIPs has better capability of selective recognition, obvious anti-ion interference, rapid detection and good visualization. Furthermore, the unique DR-MIPs was proved as efficient visual sensors for determination of DA in human serum rapidly and efficiently. The DR-MIPs still displayed well accuracy, and the potential prospects of this smart sensor is clearly demonstrated in the context of modern clinical medicine.

比例式荧光传感器具有高度的直观性，准确性和可视性，因此在化学监测和识别中显示出了广阔的前景。在这项工作中，比例荧光传感器包括蓝色荧光碳量子点（CQD）作为内标材料，以及红色荧光硼酸修饰的CdTe QD作为响应信号。然后我们选择多巴胺（DA）作为模板，选择3-苯基硼酸（APBA）作为功能单体，使用原硅酸四乙酯（TEOS）作为交联剂来合成可以选择性和灵敏地识别多巴胺的双比例分子印迹聚合物（DR-MIP）。DR-MIP具有更好的选择性识别能力，明显的抗离子干扰，快速检测和良好的可视化效果。此外，独特的DR-MIP被证明是快速有效地测定人血清中DA的有效视觉传感器。DR-MIP仍然显示出良好的准确性，并且在现代临床医学的背景下清楚地展示了这种智能传感器的潜在前景。