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Electronic properties of guanine-based nanowires | | Arrigo Calzolari
; Rosa Di Felice
; Elisa Molinari
; | | Date: |
3 Mar 2004 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | We present a first-principle study of the electronic and conduction properties of a few classes of nanowires constituted of guanine (G) molecules, self-assembled in different geometries. We first analyze the effect of the vertical $pi$-$pi$ interaction in model G-stack columns. Then, we exploit the results obtained from those models to interpret the features of realistic stacked and hydrogen-bonded structures, namely the guanine quadruple helices and the planar ribbons. With respect to natural DNA, the different structures as well as the inclusion of metal cations, drastically affect the bonding pattern among the bases, introducing novel features in the electronic properties of the systems. These supramolecular G-aggregates, alternative to DNA, are expected to show intersting properties for molecular elec tronics applications. | | Source: | arXiv, cond-mat/0403127 | | Services: | Forum | Review | PDF | Favorites | |
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