Nanoscale electronic device applications of CNT's will require arranging them into networks, with precise control of the placement, orientation and spacing being essential. Scaffolded DNA nanoarchitectures provides a flexible platform for performing supramolecular chemistry, generating complex, nanostructured surfaces through the use of simple modifications, which can accommodate various biologically relevant molecules, metal nanoparticles, quantum dots and carbon nanotubes. In this presentation a simplified, alternative approach to immobilize CNTs on origami constructs at ~100 nm spacing, with programmed orientation, is reported. Figure 1: AFM images of SWCNT a) short length; b) long length; c) single rectangular origami (srDO); d) one dimensional cross origami (1DcDO); e) and f) show CNTs aligned srDO and g) shows two CNTs aligned on 1DcDO. Scale bars for images a-f are 100nm in length.Particularly, two different lengths of ssDNA wrapped SWCNT, short tubes of length ~92 nm�24 (Fig.1a) and long tubes of length 314 nm�249 (Fig.1b) were bound to the ssDNA rich edges of two differently shaped origami constructs, one rectangular (Fig. 1c) and one in the form of a catenated cross motif (1DcDO) (Fig. 1d) in this study. AFM topography images presented in Figs. 1e and 1f demonstrate that short CNT's successfully aligned on the edges of single origami constructs and Fig. 1g presents a pair of ~500nm long CNTs successfully aligned on 1DcDO in a parallel orientation.

DNA nanostructure directed localization of SWCNT

246th National Meeting (2013)

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