Toward DNA conductivity: a theoretical perspective

Abstract

With most of the early experiments reporting a wide range of electronic properties for DNA, varying from insulating, semiconducting, and conducting to even induced superconductivity, the conductivity of DNA still remains a challenge. To this end, theoretical studies have greatly aided in explaining the observed conductance behavior of DNA. Theoretical charge-transfer studies of DNA can be divided into two broad categories, model calculations and ab initio calculations. In this Perspective, we discuss a few results from both categories and highlight the importance of both methods. The aim is to provide an overview of the theoretical methods that are used to study DNA conductivity, highlighting their strengths and deficiencies.