Controlled assembly of multi-segment nanowires by histidine-tagged peptides

被引：20

作者：

Awang, Aijun A. ^{[1
]}

Lee, Joun ^{[1
]}

Jenikova, Gabriela ^{[1
]}

Mulchandani, Ashok ^{[1
]}

Myung, Nosang V. ^{[1
]}

Chen, Wilfred ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

来源：

NANOTECHNOLOGY | 2006年 / 17卷 / 14期

关键词：

D O I：

10.1088/0957-4484/17/14/006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A facile technique was demonstrated for the controlled assembly and alignment of multi-segment nanowires using bioengineered polypeptides. An elastin-like-polypeptide (ELP)-based biopolymer consisting of a hexahistine cluster at each end (His(6)-ELP-His(6)) was generated and purified by taking advantage of the reversible phase transition property of ELP. The affinity between the His(6) domain of biopolymers and the nickel segment of multi-segment nickel/gold/nickel nanowires was exploited for the directed assembly of nanowires onto peptide-functionalized electrode surfaces. The presence of the ferromagnetic nickel segments on the nanowires allowed the control of directionality by an external magnetic field. Using this method, the directed assembly and positioning of multi-segment nanowires across two microfabricated nickel electrodes in a controlled manner was accomplished with the expected ohmic contact.

引用

页码：3375 / 3379

页数：5

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