Organic Transistor–Based Chemical Sensors for Real-Sample Analysis

Abstract

An organic field-effect transistor (OFET) is the representative amplification device showing a switching profile by applying a gate voltage, which indicates the potential as a chemical sensor device in combination with appropriate molecular-recognition materials. In contrast, the realization of OFET-based chemical sensors for real-sample analysis is limited owing to the instability of organic semiconductive materials under ambient conditions and the difficulty of the designs of molecular-recognition materials. Methodologies and actual approaches to maximize the potential of the OFETs as chemical sensor platforms based on fusion technologies between organic electronics and molecular-recognition chemistry are described in this review.