| Language: | English |
|---|---|
| Type: | Article |
| Authors: | Hiroyuki Mayama, T. Hiroya, K. Inagaki, S. Tanda and Kenichi Yoshikawa |
| Journal: | Chemical Physics Letters |
| ISSN: | 0009-2614 |
| Volume: | 397 |
| Number: | 1-3 |
| Month: | 10 |
| Year: | 2004 |
| Actual year: | 2004 |
| Pages: | 101-105 |
| doi: | 10.1016/j.cplett.2004.08.061 |
| Abstract: | We report novel experimental results of chemical doping effect on Ag-doped DNA conductor. The prepared Ag-doped DNA samples were confirmed by EXAFS that Ag+ was doped into pi-way. In I-V measurements at room temperature, nonlinear I-V curves with hysteresis emerged and systematic change in electrical conductivity a was observed from 10(-10) to 10(-6) Omega(-1) cm(-1) under doping condition [Ag+]/[Base pair] = 10(-6)-10. The relation between the conductivity and dopant concentration showed a weak dependence a proportional to [Ag+](0.5). This 'weakly doping effect' may be caused by the long-range correlated randomness of sequence in DNA, in contrast with usual doped organic conductors. (C) 2004 Elsevier B.V. All rights reserved. |
Hiroyuki Mayama, T. Hiroya, K. Inagaki, S. Tanda and Kenichi Yoshikawa, Chemical Physics Letters, 397, 101-105 (2004)