Effect of Protonation on the electronic properties of DNA base pairs: Applications for molecular electronics
| dc.creator | Mallajosyula, Sairam S. | |
| dc.creator | Pati, Swapan K | |
| dc.date | 2007-07-30 | |
| dc.date.accessioned | 2026-07-07T08:21:00Z | |
| dc.date.available | 2026-07-07T08:21:00Z | |
| dc.description | Protonation of DNA basepairs is a reversible phenomenon which can be controlled by tuning the pH of the system. Under mild acidic conditions, the hydrogen bonding pattern of the DNA basepairs undergoes a change. We study the effect of protonation on the electronic properties of the DNA basepairs to probe for possible molecular electronics applications. We find that, under mild acidic pH conditions, the A:T basepair shows excellent rectification behaviour which is, however, absent in the G:C basepair. The mechanism of rectification has been discussed using a simple chemical potential model. We also consider the non-canonical A:A basepair and find that it can be used as efficient pH dependent molecular switch. The switching action in A:A basepair is explained in the light of pi-pi interactions which lead to efficient delocalization over the entire basepair. | |
| dc.description | 5 pages, 4 Figures | |
| dc.identifier | https://arxiv.org/abs/0707.4346 | |
| dc.identifier | http://arxiv.org/abs/0707.4346 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135231 | |
| dc.subject | Materials Science | |
| dc.title | Effect of Protonation on the electronic properties of DNA base pairs: Applications for molecular electronics | |
| dc.type | text |