In a great deal of research, electron www.selleckchem.com/products/CHIR-258.html transfer through molecular wires and DNA strands has been modelled as donor-bridge-acceptor systems due to the analogy between them. DNA as a molecular wire plays a key role in exhibition of nonlinear behaviors Inhibitors,Modulators,Libraries in I�CV characteristic curves [1�C6]. Once DNA is sandwiched between metal layers, these wires enable charge transport phenomena as a rectifier or transistor or switch to take place [5�C8]. The important and interesting issue in DNA base device is their semiconductive behavior [9,10] or response in the presence of external electric and magnetic fields [11]. Some semiconductors, such as silicon, are fabricated under high temperature conditions. The provision of tunable conditions for these materials with the purpose of their utility as spintronic devices is difficult.
But, there are other types of semiconductor like organic semiconductors whose preparation does not involve high temperatures. They can be synthesized at Inhibitors,Modulators,Libraries much moderate temperatures with low Inhibitors,Modulators,Libraries pollution and reduced toxic effects. Furthermore, their high flexibility guarantees tunable electronic properties. The long coherence time of bio-semiconductors is a suitable feature for fabrication of coupling spin-orbit devices as a spintronic component [12]. Spin transport in molecular systems, as a branch of electrotransitions, is of special interest but lacks thorough experimental investigation [13]. Several works have been conducted concerning current transport in DNA structures in magnetic fields but many of them are theoretical studies and still need more investigation as experimental research.
In this regard, Petrove et al. have theoretically studied the influence of an external magnetic field upon a molecular wire [4,11] and in 2002, Dawei et al. reported the magnetic resistance of G4-DNA in a molecular device [14].In this work, we demonstrate an electrical behavior of a MDM structure in an external magnetic field. The MDM structure as a back-to-back diode in gold-DNA-gold structure Inhibitors,Modulators,Libraries shows low threshold voltage bias in forward and large Anacetrapib in reverse. This diode, under the influence of an external magnetic field, acts as a magnetic diode. The potential barrier between DNA and gold is calculated to be 0.878 eV based on its I�CV curve and Schottky��s rule. An external perpendicular magnetic sellekchem field reduces the rate of charge transport and current through DNA strands. Based on the results, the measurements ascertain a good relationship between external magnetic field and current. The authors intend to exploit such magnetic sensitivity behavior of MDM structures in bioengineering studies and nanoelectronic devices.2.?Experimental Section2.1.