Mechanically Induced Shaping of Organic Single Crystals: Facile Fabrication of Fluorescent and Elastic Crystal Fibers

Abstract Mechanically induced shaping (i.e., top‐down processing) of organic single crystals is an undeveloped area of research because applying stress to such nonflexible crystalline materials generally causes them to disintegrate. Herein, we present a mechanically induced splitting phenomenon of elastic organic single crystals, and study on a facile shaping processing method of centimeter‐scale elastic organic single crystal of fluorescent π‐conjugated molecule into various fine crystal fibers (thickness: ≈50 μm; width: ≈150 μm; length: ≈25 mm). The fibers produced maintained their original crystal structure and properties (i.e., fluorescence efficiency and elastic flexibility).