Macrocyclic Restriction with Flexible Alkylene Linkers: A Simple Strategy to Control the Solid‐State Properties of π‐Conjugated Systems

Cyclic and flexible: A simple molecular design for controlling the packing structure and solid-state properties of π-conjugated skeletons is proposed. A subtle difference of the flexible alkylene linker chain lengths of cyclic terthiophene dimers leads to distinct packing structures, and accordingly the solid-state properties, such as the gelation ability and photophysical properties.