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首页> 外文期刊>Journal of nano research >Electrochemical Ultra-Low Detection of Isoniazid Using a Salicylaldamine Functionalised G1-DAB-(NH2)(4) Dendritic Sensor vs. UV-VIS Spectrophotometric Detection
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Electrochemical Ultra-Low Detection of Isoniazid Using a Salicylaldamine Functionalised G1-DAB-(NH2)(4) Dendritic Sensor vs. UV-VIS Spectrophotometric Detection

机译：水杨醛胺功能化的G1-DAB-（NH2）（4）树状传感器对异烟肼的电化学超低检测与UV-VIS分光光度检测

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A poly(propyleneimine) based dendrimer was synthesised and successfully functionalised with a copper centre within its branches. The dendrimer and corresponding metallodendrimer were successfully characterised using FTIR, HR-TEM and HR-SEM in order to determine the effect of the inclusion of copper into the dendritic structure. The incorporation of copper caused crystallinity as revealed in the HR-TEM and a sheet-like morphology as shown in the HR-SEM images. The resulting metallodendrimer was then applied as an electrocatalytic platform for the sensing of a first line TB drug called isoniazid. This method was compared to a routine laboratory detection using UV-Vis and was found to be much more sensitive to trace amounts of isoniazid in solution. The electrochemical detection was found to have a limit of detection (LOD) of 0.233 nM compared to 11.47 nM using the Ultraviolet-visible spectroscopy method.
机译：合成了一种基于聚（亚丙基亚胺）的树枝状聚合物，并成功地将其分支内的铜中心官能化。使用FTIR，HR-TEM和HR-SEM成功地表征了树枝状聚合物和相应的金属树枝状聚合物，从而确定了将铜包含在树枝状结构中的作用。如HR-TEM所示，铜的结合导致结晶度，如HR-SEM图像所示，呈片状形态。然后将所得的金属树枝状大分子用作电催化平台，用于感测称为异烟肼的第一线结核药物。将该方法与使用UV-Vis进行常规实验室检测相比较，发现该方法对溶液中痕量异烟肼更加敏感。发现电化学检测的检测限（LOD）为0.233 nM，而使用紫外可见光谱法的检测限为11.47 nM。

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