Bioinspired Target-Specific Crystallization on Peptide Nanotubes for Ultrasensitive Pb Ion Detection

被引:29
作者
de la Rica, Roberto [1 ]
Mendoza, Ernest [2 ,3 ]
Matsui, Hiroshi [1 ]
机构
[1] CUNY Hunter Coll, Dept Chem & Biochem, New York, NY 10065 USA
[2] CSIC, Dept Micro & Nanosyst, Inst Microelect Barcelona, IMB CNM, Belllaterra 08193, Spain
[3] ICN CSIC, Res Ctr Nanosci & Nanotechnol CIN2, Belllaterra 08193, Spain
基金
美国国家卫生研究院;
关键词
biomineralization; bionanotechnology; mercury peptides; sensors; NANOCRYSTAL GROWTH; DNA; ELECTRODES; SENSOR; HG2+;
D O I
10.1002/smll.201000489
中图分类号
O6 [化学];
学科分类号
070301 [无机化学];
摘要
An ultralow concentration of Pb ions is detected by a sensor integrating a peptide nanotube detection platform with a smart peptide function that specifically metalizes the target ion. As the PbII-binding peptide on the nanotube, which bridges two electrodes, templates Pb nanowires, a resistor appears in the circuit, and conductance is detected as the signal for PbII. © 2010 Wiley-VCH Verlag GmbH and Co. KGaA, Weinheim.
引用
收藏
页码:1753 / 1756
页数:4
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