Single Molecular Imaging and Spectroscopy of Conjugated Polyelectrolytes Decorated on Stretched Aligned DNA

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• 作者：Per Bj&ouml ; rk ; Anna Herland ; Ivan G. Scheblykin ; and Olle Inganä ; s
• 刊名：Nano Letters
• 出版年：2005
• 出版时间：October 2005
• 年：2005
• 卷：5
• 期：10
• 页码：1948 - 1953
• 全文大小：420K
• 年卷期：v.5,no.10(October 2005)
• ISSN：1530-6992

文摘

DNA is the prototype template for building nanoelectronic devices by self-assembly. The electronic functions are made possible by coordinatingelectronic polymer chains to DNA. This paper demonstrates two methods for fabrication of aligned and ordered DNA nanowires complexedwith conjugated polyelectrolytes (CPEs). The complex can be formed either in solution prior to stretching or after stretching of the bare DNAon a surface. Molecular combing was used to stretch the complexes on surface energy patterned surfaces, and PMMA for the bare DNA.Single molecular spectroscopy, in fluorescence, and microscopy, in atomic force microscopy, give evidence for coordination of the short CPEchains to the aligned DNA.