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Self-assembled guanine ribbons as wide-bandgap semiconductors | | A. Calzolari
; R. Di Felice
; E. Molinari
; a. Garbesi
; | | Date: |
30 Oct 2001 | | Journal: | Physica E vol.13/2-4, 1236 (2002) | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | We present a first principle study about the stability and the electronic properties of a new biomolecular solid-state material, obtained by the self-assembling of guanine (G) molecules. We consider hydrogen-bonded planar ribbons in isolated and stacked configurations. These aggregates present electronic properties similar to inorganic wide-bandgap semiconductors. The formation of Bloch-type orbitals is observed along the stacking direction, while it is negligible in the ribbon plane. Global band-like conduction may be affected by a dipole-field which spontaneously arises along the ribbon axis. Our results indicate that G-ribbon assemblies are promising materials for biomolecular nanodevices, consistently with recent experimental results. | | Source: | arXiv, cond-mat/0110634 | | Services: | Forum | Review | PDF | Favorites | |
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