Thermotriggered Domino‐like Single‐Crystal‐to‐Single‐Crystal Phase Transition from Face‐to‐Edge to Face‐to‐Face Packing of Anthracenes
Yuto Hino, Shotaro Hayashi
Abstract
Abstract Stimuli‐triggered crystal‐to‐crystal and single‐crystal‐to‐single‐crystal (SCSC) transformations have received significant attention in the scientific community. To visualize such phenomenon, controlling the optical properties and the thermodynamic stability of the molecular crystals is a very important research subject. In this report, the selective growth of photoluminescent (PL) 1,8‐bisphenylanthracene polymorphic ( cI and cII ) and 1,2‐dichloroethane‐inclusion crystals ( iC ) under various optimized conditions is described. These crystals exhibited unique mechano‐ and thermoresponsive disordering, crystal‐to‐crystal phase transition, and SCSC phase transition. In particular, rapid thermostimulus SCSC occurred from blue‐PL cI into greenish‐blue‐PL cII . Interestingly, the SCSC phase transition of cI into cII was triggered by thermal stimuli and propagated spontaneously. Thermotriggered domino‐like SCSC phase transition was observed on a fully visible timescale (ca. 125 μm min −1 ).