Dual-mode electrochemical and electrochemiluminescence detection of dopamine based on perylene diimide self-assembly material

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL Microchimica Acta Pub Date : 2024-10-31 DOI:10.1007/s00604-024-06768-5

Wei Zhang, Hong Zhang, Chuan Li, Lei Shang, Rongna Ma, Liping Jia, Xiaojian Li, Bo Li, Huaisheng Wang

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Abstract

The self-assembly material N,N-bis-(3-dimethyl aminopropyl)-3,4,9,10-perylene tetracarboxylic acid diimide (PDI) is reported to show electrochemical (EC)/electrochemiluminescence (ECL) property for designing new dual-mode dopamine (DA) sensors. K₂S₂O₈ significantly improved the EC reduction current at -0.346 V and ECL intensity at -0.25 V of the PDI self-assembly material. DA largely decreased the EC reduction current and ECL intensity of this homogeneous EC/ECL material due to the competitive consumption of K₂S₂O₈ in the oxidization process of DA and the low electron conductivity of polyDA formed through the oxidization of DA by K₂S₂O₈. In addition, the ECL quenching mechanism involved an energy-transfer process resulting from the collision between the produced o-benzoquinone species (oxidization of DA) and the excited state of PDI, which decreased the ECL intensity. This homogeneous EC/ECL material showed linear EC current response for DA from 5.0 nM to 50.0 µM with a detection of limit of 2.7 nM and linear ECL response for DA from 1.0 nM to 100.0 µM with a detection of limit of 0.41 nM. The proposed dual-mode EC/ECL sensors also showed good feasibility in urine sample analysis.

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基于过二亚胺自组装材料的多巴胺双模电化学和电化学发光检测技术

据报道，自组装材料 N,N-双（3-二甲基氨基丙基）-3,4,9,10-苝四羧酸二亚胺（PDI）具有电化学（EC）/电化学发光（ECL）特性，可用于设计新型多巴胺（DA）双模传感器。K2S2O8 明显改善了 PDI 自组装材料在 -0.346 V 时的电化学还原电流和 -0.25 V 时的 ECL 强度。由于 K2S2O8 在 DA 氧化过程中的竞争性消耗以及 K2S2O8 氧化 DA 形成的聚DA 的低电子传导性，DA 在很大程度上降低了这种均相 EC/ECL 材料的 EC 还原电流和 ECL 强度。此外，ECL淬灭机制还涉及邻苯醌物种（DA氧化）与 PDI 激发态之间碰撞产生的能量转移过程，从而降低了 ECL 强度。这种均质 EC/ECL 材料对 5.0 nM 至 50.0 µM 的 DA 呈线性 EC 电流响应，检测限为 2.7 nM；对 1.0 nM 至 100.0 µM 的 DA 呈线性 ECL 响应，检测限为 0.41 nM。所提出的 EC/ECL 双模式传感器在尿样分析中也显示出良好的可行性。

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来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.