Luminescent Materials: Cation–Anion Interaction‐Directed Molecular Design Strategy for Mechanochromic Luminescence (Adv. Funct. Mater. 6/2014)

A series of common N-heteroaromatic onium fluorophores with striking reversible mechanochromic luminescence are designed and synthesized on page 747 based on a cation–anion interactiondirected molecular design strategy, which has great potential for a wide variety of applications such as sensors, memory devices, motion systems, security systems, rewritable optical media, etc. The image by J. You and co-workers illustrates how color printing could be realized without ink through the adoption of their mechanochromic materials.