Deposition of platinum clusters on surface-modified tobacco mosaic virus

被引：71

作者：

Lee, SY

Choi, JW

Royston, E

Janes, DB

Culver, JN

Harris, MT ^{[1
]}

机构：

[1] Purdue Univ, Sch Chem Engn, W Lafayette, IN 47907 USA

[2] Purdue Univ, Dept Elect Engn, W Lafayette, IN 47907 USA

[3] Univ Maryland, Inst Biotechnol, Ctr Biosyst Res, College Pk, MD 20742 USA

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2006年 / 6卷 / 04期

关键词：

tobacco mosaic virus; cysteine; platinum; conductance;

D O I：

10.1166/jnn.2006.146

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoscaled Pt conductors were prepared from genetically engineered Tobacco mosaic virus (TMV) templates through Pt cluster deposition on the outer surface of the TMV. Pt clusters were synthesized and deposited on the engineered TMV with surface-exposed cysteine via the in situ mineralization of hexachloroplatinate anions. This deposition was driven by the specific binding between thiols and the solid metal clusters. In addition, Pt-thiolate adducts are suggested to form on the engineered TMV in aqueous solutions that work as nucleation sites for the formation of the Pt clusters. The specific binding between Pt clusters and the engineered TMV template was investigated using UV/vis spectrophotometry and quartz crystal microbalance (QCM) analysis. The electric conductance of Pt-deposited TMV was greater than that of the uncoated TMV virion particles. This result suggests the application of metal cluster-deposited engineered TMV in future electrical devices such as rapid response sensors.

引用

页码：974 / 981

页数：8

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