For the first time, ambient-stable and balanced carrier transport is achieved in polymer ambipolar field-effect transistors (FETs) and inverters with high performance. With chlorinated isoindigo polymers, FETs fabricated in ambient conditions show hole mobilities up to 0.81 cm² V⁻¹ s⁻¹ and dramatically increased electron mobilities from 10⁻² to 0.66 cm² V⁻¹ s⁻¹. Hence, chlorination is effective to modulate electronic properties and improve the device performance of conjugated polymers.

An efficient molecular iodine-promoted method for the synthesis of (E)-β-iodo vinylsulfones using water as the solvent at room temperature has been developed. This green reaction is fast, operationally simple, environmentally benign and, especially, proceeds under very mild conditions to afford the target products with high regio- and stereoselectivity.