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Functionalization of cyclodextrins-incorporated carbon nanotube electrodes for neutral nitrophenol recognition

机译：掺入环糊精的碳纳米管电极对中性硝基苯酚识别的功能

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A novel interface architecture was constructed by a large aggregated pore of carbon nanotube (CNT) captured cyclodextrin (CD) with a small cavity. The isomer recognition ability of various cyclodextrin-incorporated carbon nanotube electrodes (CD-CNT/E) were firstly investigated and characterized systematically by differential pulse voltammetry experiments. Due to the functionalization of CNT with CD, modified electrodes exhibited perfect electrocatalytic response and enhanced recognition ability towards neutral nitrophenol (NP) isomers. The results indicated that /spl alpha/-CD-CNT/E had the best response to p-NP, /spl gamma/-CD-CNT/E did best for o- N P and HP-/spl beta/-CD-CNT/E showed excellent response to m- and p-NP, which originate from the porous structure of aggregated CNT, size selective effect and steric hindrance effect of substituent of CD. The electronic properties of CNT coupled with the specific recognition properties would indeed make for an ideal sensor.
机译：碳纳米管（CNT）的大聚集孔捕获的环糊精（CD）具有小腔体，构造了一种新颖的界面体系结构。首先研究了各种掺有环糊精的碳纳米管电极（CD-CNT / E）的异构体识别能力，并通过差分脉冲伏安法实验对其进行了系统表征。由于具有CD的CNT的功能化，修饰的电极表现出完美的电催化响应并增强了对中性硝基苯酚（NP）异构体的识别能力。结果表明/ spl alpha / -CD-CNT / E对p-NP的响应最佳，/ spl gamma / -CD-CNT / E对o-NP和HP- / spl beta / -CD-CNT的响应最佳/ E对m-和p-NP表现出优异的响应，这源于聚集的CNT的多孔结构，CD取代基的尺寸选择效应和空间位阻效应。 CNT的电子特性加上特定的识别特性确实可以成为理想的传感器。

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