Organic semiconductors are widely used for fabricating organic thin-film transistors (OTFTs), with a wide range of applications in wearable electronics and the internet of things. Intermolecular overlap between electronic orbitals on neighbouring molecules, optimal for transport, can be guided by the subtle balance of electrostatic and van der Walls forces, and the steric size effects of carefully chosen side groups. Our group focuses on understanding processing-structure-property relationships, which are key to making robust organic transistors in a reliable and reproducible fashion. One active area of research is the development of electron-transporting (n-type) materials which can deliver higher mobilities and are stable under ambient conditions.