Transport in hybrid electronic devices based on a modified DNA nucleoside (deoxyguanosine)

TL;DR

This paper introduces a novel hybrid electronic device using a modified DNA nucleoside, demonstrating significant room-temperature conductivity, rectification, and hysteresis, with transport driven by pi-pi interactions.

Contribution

It presents a new class of DNA-based hybrid electronic devices with detailed analysis of their transport mechanisms and morphological dependence.

Findings

Large conductivity at room temperature

Rectifying behavior observed

Transport driven by pi-pi interactions

Abstract

We report on a new class of hybrid electronic devices based on a DNA nucleoside (deoxyguanosine lipophilic derivative) whose assembled polymeric ribbons interconnect a submicron metallic gate. The device exhibits large conductivity at room temperature, rectifying behaviour and strong current-voltage hysteresis. The transport mechanism through the molecules is investigated by comparing films with different self-assembling morphology. We found that the main transport mechanism is connected to pi-pi interactions between guanosine molecules in adjacent ribbons, consistently with the results of our first-principles calculations.