ACENE-BASED MOLECULES AND MATEIALS: SYNTHESIS, PROPERTIES AND THEIR APPLICATIONS FOR SOLUTION PROCESSED N-TYPE ORGANIC FIELD EFFECT TRANSISTORS

Abstract

Acenes have attracted substantial attention due to their intriguing chemical and physical properties which make them as promising candidates for organic semiconducting materials. Furthermore, acenes can be regarded as a model of zigzag-edged graphene nanoribbons. Hence a comprehensive understanding of acene chemistry would be beneficial for the further development of graphene chemistry as well as organic semiconducting materials. Regarding the applicability of acenes and acene-based materials, one of the biggest problems is the stability issue of acenes which originates from the electron richness of acenes. One rational and routinely adopted strategy to stabilize acene is to introduce electron withdrawing groups. This thesis mainly illustrates various methodologies to stabilize acenes with different electron withdrawing groups adopted including imide, cyanides and TCNQ groups. A series of extended quinoidal type acenes will also be illustrated.