A rational-designed conductive sorbent, poly(thiophene-3-boronic acid) electrochemically deposited on a carbon fiber bundle, was applied for boronate affinity extraction. The coated carbon fiber bundle packed into a poly(ether ether ketone) tube was then successfully used for online solid-phase microextraction–high-performance liquid chromatography analysis of cis-diol compounds. Three kinds of catecholamines (namely, adrenaline, noradrenaline, and dopamine) were used as the test analytes. Good extraction efficiency (more than 600-fold), low limits of detection (0.2 ng·mL^-1 for adrenaline, 0.1 ng·mL^-1 for noradrenaline and dopamine), and wide linear ranges were obtained. The method was demonstrated to be efficient for analysis of catecholamines in spiked plasma samples, with good recoveries in the range of 92.5–95.71%. This work exhibited several significant advantages, including ease of use, high specificity, and high extraction efficiency. It has been demonstrated that such an electrochemically synthesized sorbent has great potential for research involving cis-diol compounds.

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设计合理设计的导电吸附剂，电化学沉积在碳纤维束上的聚（噻吩-3-硼酸），用于硼酸酯亲和萃取。然后将包裹的碳纤维束包装到聚醚醚酮管中，然后成功地用于在线固相微萃取-高效液相色谱分析顺式-二醇化合物。三种儿茶酚胺（即肾上腺素，去甲肾上腺素和多巴胺）被用作测试分析物。好的提取效率（大于600倍），低检测限（0.2纳克·ML ^-1肾上腺素，0.1纳克·ML ^-1（去甲肾上腺素和多巴胺），并获得宽线性范围。实验证明该方法可有效分析加标血浆样品中的儿茶酚胺，回收率在92.5–95.71％之间。这项工作表现出几个显着的优点，包括易于使用，高特异性和高提取效率。已经证明，这种电化学合成的吸附剂对于涉及顺式-二醇化合物的研究具有巨大的潜力。

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