An efficient one-pot strategy for the synthesis of a bisphenol A (BPA) fluorescent sensor based on a magnetic covalent organic framework-supported, carbon dot-embedded molecularly imprinted composite (named MCOF@CD@MIP) is reported for the first time in this work. Herein, MCOFs were prepared via the simple in-situ growth of COF crystals on Fe₃O₄ nanoparticles and acted as supports to provide a large surface area for CD-embedded MIP layer deposition through a room temperature sol-gel molecular imprinting process. The fabricated MCOF@CD@MIP integrated the useful magnetic properties of Fe₃O₄, the signal transduction function of CDs, the signal amplification effect derived from the COFs and MIP, and the specific recognition behavior of MIP toward template molecule BPA. Based on the fluorescence quenching behavior of BPA for the MCOF@CD@MIP, a highly sensitive and selective fluorescent MCOF@CD@MIP sensor was developed over the concentration range of 25–3000 μg L^-1 with a low detection limit (12 μg L^-1). Furthermore, the MCOF@CD@MIP sensor was employed to detect BPA in canned goods and boxed drinks with satisfactory results, which agreed well with those obtained by the traditional high performance liquid chromatography (HPLC) method, demonstrating the good reliability, accuracy and practicality of our constructed sensor.

基于磁性共价有机框架支持的碳点嵌入分子印迹复合材料（命名为 MCOF@CD@MIP）合成双酚 A（BPA）荧光传感器的有效一锅法首次在这项工作。_{在此，通过在 Fe 3} O ₄纳米颗粒上简单地原位生长 COF 晶体制备 MCOF，并作为载体通过室温溶胶-凝胶分子印迹工艺为 CD 嵌入 MIP 层沉积提供大表面积。_{制造的 MCOF@CD@MIP 集成了 Fe 3} O ₄的有用磁性，CDs的信号转导功能，COFs和MIP衍生的信号放大作用，以及MIP对模板分子BPA的特异性识别行为。基于 BPA 对 MCOF@CD@MIP 的荧光猝灭行为，开发了一种在 25–3000 μg L ^-1浓度范围内具有低检测限（12 μg L ^-1 )。此外，采用MCOF@CD@MIP传感器对罐头和盒装饮料中的BPA进行检测，结果令人满意，与传统高效液相色谱（HPLC）方法得到的结果一致，具有良好的可靠性、准确性和实用性。我们构建的传感器。