Nanopore sensor for copper ion detection using a polyamine decorated beta- cyclodextrin as the recognition element

Guo Yanli; Jian Feifei; Kang Xiaofeng

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Nanopore sensor for copper ion detection using a polyamine decorated beta- cyclodextrin as the recognition element

机译：用于铜离子检测的纳米孔传感器使用多胺装饰β-环糊精作为识别元件

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A novel and simple nanopore sensing method has been developed for the detection of Cu-II ions using polyamine decorated cyclodextrin as the recognition element. The strong binding affinity between Cu-II and the amino groups of cyclodextrin inside an a-hemolysin pore causes the new current blockade events. The event frequency is linear for concentrations of Cu-II in the range 0.08-20 mu M. The detection limit is as low as 12 nM. More significantly, the sensing system is highly specific for Cu-II and does not respond to other metal ions with concentrations up to 10 fold that of Cu-II. The applicability of this sensor has also been verified by the analysis of Cu-II ions in running water, suggesting the potential application of this sensing system.

机译：已经开发了一种新颖和简单的纳米孔感测方法，用于检测使用多胺装饰环糊精作为识别元件的Cu-II离子。 Cu-II和环糊精孔内环糊精的氨基之间的强致密亲和力导致新的电流阻断事件。事件频率是Cu-II浓度的线性，其范围为0.08-20μm。检测极限低至12nm。更重要的是，传感系统对Cu-II具有高度特异性，并且不响应其他金属离子，其浓度高达10倍的Cu-II。该传感器的适用性也通过分析了流水中的Cu-II离子，表明该传感系统的潜在应用。

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《RSC Advances》 |2017年第25期|共6页
作者
Guo Yanli; Jian Feifei; Kang Xiaofeng;
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作者单位

Northwest Univ Xian Key Lab Synthet &

Nat Funct Mol Chem Coll Chem &

Mat Sci Xian 710127 Peoples R China;

Northwest Univ Xian Key Lab Synthet &

Nat Funct Mol Chem Coll Chem &

Mat Sci Xian 710127 Peoples R China;

Northwest Univ Xian Key Lab Synthet &

Nat Funct Mol Chem Coll Chem &

Mat Sci Xian 710127 Peoples R China;

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正文语种 eng
中图分类化学;
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机译：用于铜离子检测的纳米孔传感器使用多胺装饰β-环糊精作为识别元件
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Nanopore sensor for copper ion detection using a polyamine decorated beta- cyclodextrin as the recognition element

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