Self-Assembly of an Amphiphilic pi-Conjugated Dyad into Fibers: Ultrafast and Ultrasensitive Humidity Sensor

A novel approach is presented. It is based on light irradiation acting as a remote control on the self-assembly of an amphiphilic D-A ?-conjugated dyad into ordered structures. In particular, the joint effect of light irradiation and SIP in an environmentally friendly water solvent, makes it possible to form nanoribbons. Upon tuning the irradiation time, the size of aggregation of the ribbons, forming fi ber bundles, can be modulated.