Bromination Improves the Electron Mobility of Tetraazapentacene

Angew Chem Int Ed Engl. 2018 Jul 20;57(30):9543-9547. doi: 10.1002/anie.201805728. Epub 2018 Jun 29.

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 cm2 V-1 s-1 can be achieved in thin-film transistors.

Keywords: azaacenes; bromination; n-channel semiconductors; radical anions; thin-film transistors.