Bromination Improves the Electron Mobility of Tetraazapentacene

Abstract

Abstract A cyclocondensation of TIPS‐ethynyl‐substituted diaminoarenes with in situ obtained 4,5‐dibromocyclohexa‐3,5‐diene‐1,2‐dione has led to the synthesis of tetrabromotetraazapentacene (BrTAP). BrTAP is easily reduced to its air‐stable radical anion and electron mobilities >0.56 cm 2 V −1 s −1 can be achieved in thin‐film transistors.