Resonance‐Assisted Self‐Doping in Robust Open‐Shell Ladder‐Type Oligoaniline Analogues

Abstract

A novel resonance‐assisted self‐doping mechanism has been demonstrated in ladder‐type oligoaniline‐derived organic conductors. The new class of compounds has a unique structure incorporating acidic phenolic hydroxyl groups into the ladder‐type cyclohexadiene‐1,4‐diimine core, enabling efficient proton transfer and self‐doping without the need for external dopants. Mechanistic studies and computational studies confirm the open‐shell, zwitterionic nature of the self‐doped state and the significant role played by the dielectric environment. This new self‐doping mechanism allows for higher stability and durability in the material's electronic performance. The self‐doped form retains durability under harsh conditions and maintains its properties over extended periods of time.