Ultrathin Gold Nanowire-Functionalized Carbon Nanotubes for Hybrid Molecular Sensing

被引：37

作者：

Cui, Huizhong ^{[1
]}

Hong, Chenglin ^{[1
,3
]}

Ying, Andrew ^{[1
]}

Yang, Xinmai ^{[2
]}

Ren, Shenqiang ^{[1
]}

机构：

[1] Univ Kansas, Dept Chem, Lawrence, KS 66045 USA

[2] Univ Kansas, Dept Mech Engn, Bioengn Res Ctr, Lawrence, KS 66045 USA

[3] Shihezi Univ, Coll Chem & Chem Engn, Shihezi 832003, Peoples R China

来源：

ACS NANO | 2013年 / 7卷 / 09期

基金：

美国国家卫生研究院;

关键词：

carbon nanotubes; gold nanowires; in situ synthesis; electrochemical; photoacoustic imaging; HEPATOCELLULAR-CARCINOMA; ALPHA-FETOPROTEIN; HYDROGEN STORAGE; LIVING MICE; NANOPARTICLES; RESONANCE; SURFACE; IMMOBILIZATION; SENSITIVITY; TOMOGRAPHY;

D O I：

10.1021/nn4027323

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Carbon nanotubes (CNTs) have shown great potential as sensing component in the electrochemical field effect transistor and optical sensors, because of their extraordinary one-dimensional electronic structure, thermal conductivity, and tunable and stable near-infrared emission. However, the insolubility of CNTs due to strong van der Waals interactions limits their use in the field of nanotechnology. In this study, we demonstrate that noncovalent ultrathin gold nanowires functionalized multiwalled carbon nanotube (GNW-CNT) hybrid sensing agents show highly efficient and selective immune molecular sensing in electrochemical and near-infrared photoacoustic imaging methods. A detection limit of 0.01 ng/mL for the alpha-fetoprotein (AFP) antigen with high selectivity is shown. The extraordinary optical absorption, thermal, and electric conductivity of hybrid GNW-CNTs presented In this study could be an effective tactic to integrate imaging, sensing, and treatment functionalities.

引用

页码：7805 / 7811

页数：7

共 46 条

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