Monolayer‐Dimensional 5,5′‐Bis(4‐hexylphenyl)‐2,2′‐bithiophene Transistors and Chemically Responsive Heterostructures

The organic semiconductor 5,5′-Bis(4- hexylphenyl)-2,2′-bithiophene (6PTTP6) shows a remarkable 2D growth mechanism. Without requiring a complicated fabrication process, organic field-effect transistors (OFETs) with only a 1.5 monolayer 6PTTP6 film show mobilities close to those of conventional thick OFETs. Our heterostructured OFET blend exhibits a much faster response speed and a higher sensitivity to nerve-agent simulants than thicker OFET analogues. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2008/adma200703212_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.