【摘要】 共价有机聚合物作为一类多孔材料，其比表面积大，活性位点多和结构可设计性强，具有作为电化学传感器的潜力。但由于导电性能较差，限制了其作为电催化剂的应用。一种有效的策略是将其引入导电相。该文在溶剂热条件下合成了一种新型共价有机聚合物Br-COPs，并用X射线衍射（XRD）、扫描电镜（SEM）对其结构进行了表征，结果表明，Br-COPs是菊花丝带状多孔无定形聚合物。将Br-COPs与多壁碳纳米管复合改性玻璃碳电极（GCE）应用于多巴胺的检测。实验结果表明，通过Br-COPs与多壁碳纳米管复合，产生协同作用，大大提高了改性电极的电催化多巴胺性能。在最佳条件下，设计的传感器对多巴胺的响应较快，线性浓度范围为0.9～6.25μmol/L和12.5～400μmol/L，检出限为0.071μmol/L。该传感器成功用于真实样品中多巴胺的检测。更多还原

【Abstract】 As a class of porous materials,covalent organic polymers have the potential to be used as electrochemical sensors because of their large specific surface area,multiple active sites and strong designability. However,due to its poor electrical conductivity,its application as an electrocatalyst is limited. An effective strategy is to introduce a conductive phase. A novel covalent organic polymer Br-COPs was synthesized under solvothermal conditions. The structures were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM). XRD patterns showed that the prepared Br-COP had an amorphous structure. Scanning electron microscopy analysis showed that Br-COPs was a disc porous polymer. Br-COP was combined with multi-walled carbon nanotubes to modify the glass carbon electrode(GCE),which was used for the detection of dopamine. The experimental results showed that the synergistic effect of Br-COPs combined with multi-walled carbon nanotubes greatly improved the electrocatalytic dopamine performance of the modified electrode. Under the optimal conditions, the designed sensor responded quickly to dopamine, with a linear concentration range of 0. 9-6. 25 μmol/L and 12. 5-400 μmol/L and a detection limit of 0. 071 μmol/L. The sensor was successfully used to detect dopamine in real samples.更多还原