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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Rational incorporation of covalent organic framework/carbon nanotube (COF/CNT) composites for electrochemical aptasensing of ultra-trace atrazine
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Rational incorporation of covalent organic framework/carbon nanotube (COF/CNT) composites for electrochemical aptasensing of ultra-trace atrazine

机译：合理的共价有机骨架/碳纳米管（COF / CNT）复合材料用于超痕量尿嘧啶的电化学分配

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摘要

The fabrication of novel covalent organic frameworks (COFs)/carbon nanotubes (CNTs) composites with excellent performance in broad applications is an important field of research. Mesoporous COF can be successfully coated on the surface of CNTs through the formation of chemical bonds between COFs-CHO and CNTs-NH2. This composite can be implemented to fabricate an electrochemical aptasensor owing to its porosity, conjugated system and electrical conductivity, and can quantitatively detect atrazine over a wide concentration range of 1.0 x 10(-3) to 50 ng mL(-1) with the limit of detection (LOD) of 0.67 pg mL(-1) (3.11 pM) using electrochemical impedance spectroscopy. The sensing performance can be mainly attributed to a mass of aptamers immobilized on the COF through pi-pi stacking and hydrogen bond interactions and the fine electrical conductivity of the CNTs. This systematic research can provide an efficient approach to fabricate COF/CNT composite-based biosensors for monitoring ultra-trace analytes.
机译：新型共价有机骨架（COFs）/碳纳米管（CNTs）复合材料的制备是一个重要的研究领域，具有广泛的应用前景。通过COFs-CHO与CNTs-NH2之间形成化学键，可以成功地将介孔COF包覆在CNTs表面。由于其孔隙率、共轭体系和导电性，该复合材料可用于制造电化学适体传感器，并可在1.0 x 10（-3）至50 ng-mL（-1）的宽浓度范围内定量检测阿特拉津，使用电化学阻抗谱的检测限（LOD）为0.67 pg-mL（-1）（3.11 pM）。传感性能主要归因于通过pi-pi堆积和氢键相互作用固定在COF上的大量适体，以及碳纳米管良好的导电性。该系统的研究为制备用于监测超痕量分析物的COF/CNT复合生物传感器提供了一条有效途径。

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