ABSTRACT
The present chapter explains the electrical properties of DNA from
the viewpoint of ion transfer, which is an important feature of bio-
tissue materials. The fuel cell application in Chapter 13 is developed
on the basis of the characteristic features in the ionic conduction of
DNA. Based on the investigation of ion transports using impedance
analysis and nuclear magnetic resonance (NMR) measurement,
the proton conductivity of DNA under humidified conditions is
revealed. Impedance analysis indicates that water bridges play an
important role in the appearance of proton conductivity. Moreover, 2D-DNA and DNA-Na also become ionic conductors under humid-
ified conditions. The chapter also describes the process of water
bridge formation and the role of deuterons and Na ions in ionic
conductivity.