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Voltammetric Detection of Catechol and Dopamine Based on a Supramolecular Composite Prepared from Multifarene[3,3] and Reduced Graphene Oxide
Electroanalysis ( IF 2.7 ) Pub Date : 2020-03-05 , DOI: 10.1002/elan.201900772 Huan Luo 1 , Yong‐Yi Zhao 1 , Xian‐Yi Jin 2 , Jian‐Mei Yang 1 , Hang Cong 1 , Qing‐Mei Ge 1 , Lin Sun 3 , Mao Liu 1 , Zhu Tao 1
Electroanalysis ( IF 2.7 ) Pub Date : 2020-03-05 , DOI: 10.1002/elan.201900772 Huan Luo 1 , Yong‐Yi Zhao 1 , Xian‐Yi Jin 2 , Jian‐Mei Yang 1 , Hang Cong 1 , Qing‐Mei Ge 1 , Lin Sun 3 , Mao Liu 1 , Zhu Tao 1
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A selective and sensitive modified‐electrode for catechol and dopamine was presented with supramolecular recognition accomplished by making use of the macrocyclic host multifarene[3,3] that was used as a composite with reduced graphene oxide. The morphologies and electrochemical nature of the composite were characterized by atomic force microscopy, transmission electron microscopy, cyclic voltammetry and differential pulse anodic voltammetry. The modified electrode, best operated at a potential around 0.16 V vs. Ag/AgCl, displayed a differential pulse voltammetric response in the linear concentration range of 10–100 nM within a detection limit of 0.51 nM (at S/N=3). It was further applied to detect dopamine (at a working potential of 0.18 V vs. Ag/AgCl) in the linear concentration range of 10–100 nM with a detection limit of 0.62 nM. The modified electrode also exhibited satisfactory results to the determination of dopamine injections. The constructed modified electrode for dopamine detection was investigated in the presence of the interfering substances including glucose, urea and ascorbic acid, indicating a good selectivity.
中文翻译：
基于多法呢[3,3]和氧化石墨烯还原的超分子复合物对邻苯二酚和多巴胺的伏安检测
提出了一种对儿茶酚和多巴胺的选择性敏感修饰电极，其超分子识别是通过使用大环主体多法呢烯[3,3]来实现的，该多法呢烯与还原的氧化石墨烯复合使用。通过原子力显微镜，透射电子显微镜，循环伏安法和差分脉冲阳极伏安法表征了复合材料的形貌和电化学性质。改性电极最好在相对于Ag / AgCl的0.16 V电位下操作，在10–100 nM的线性浓度范围内，在0.51 nM的检出限内（在S / N = 3时）显示出差分脉冲伏安法响应。它被进一步用于检测线性浓度为10–100 nM的多巴胺（相对于Ag / AgCl的工作电位为0.18 V），检测极限为0.62 nM。修饰电极对多巴胺注射液的测定也显示出令人满意的结果。在存在干扰物质（包括葡萄糖，尿素和抗坏血酸）的情况下，对构建的用于多巴胺检测的修饰电极进行了研究，表明具有良好的选择性。
更新日期：2020-03-05
中文翻译：
基于多法呢[3,3]和氧化石墨烯还原的超分子复合物对邻苯二酚和多巴胺的伏安检测
提出了一种对儿茶酚和多巴胺的选择性敏感修饰电极，其超分子识别是通过使用大环主体多法呢烯[3,3]来实现的，该多法呢烯与还原的氧化石墨烯复合使用。通过原子力显微镜，透射电子显微镜，循环伏安法和差分脉冲阳极伏安法表征了复合材料的形貌和电化学性质。改性电极最好在相对于Ag / AgCl的0.16 V电位下操作，在10–100 nM的线性浓度范围内，在0.51 nM的检出限内（在S / N = 3时）显示出差分脉冲伏安法响应。它被进一步用于检测线性浓度为10–100 nM的多巴胺（相对于Ag / AgCl的工作电位为0.18 V），检测极限为0.62 nM。修饰电极对多巴胺注射液的测定也显示出令人满意的结果。在存在干扰物质（包括葡萄糖，尿素和抗坏血酸）的情况下，对构建的用于多巴胺检测的修饰电极进行了研究，表明具有良好的选择性。
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