Sagara, Yoshimitsu Weder, Christoph Tamaoki, Nobuyuki 2017 A novel material with stimulus-responsive luminescence was created by integrating a chromophore with assembly-dependent emission properties into a liquid crystalline compound that can be kinetically trapped in a supercooled liquid crystalline state. This was achieved by synthesizing an asymmetric cyclophane containing one 1,6-bis(phenylethynyl)pyrene group. The new compound displays a broad nematic phase above ∼110 °C upon being heated. Quenching to room temperature allows one to avoid crystallization, and the supercooled nematic phase is stable for at least 1 h. When the compound is heated, a phase transition from the kinetically trapped state to a crystalline state occurs, concomitant with a pronounced change in photoluminescence. The crystalline phase thus accessed shows mechanoresponsive luminescence behavior. application/pdf https://folia.unifr.ch/global/documents/305625 https://folia.unifr.ch/documents/305625/files/Weder2017ChemMater_2.pdf https://folia.unifr.ch/documents/305625/files/Weder2017ChemMater_2_SI.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.chemmater.7b02220 info:eu-repo/semantics/openAccess License undefined Chemistry of Materials. - 2017, vol. 29, no. 14, p. 6145-6152 info:eu-repo/classification/udc/54 Asymmetric Cyclophanes Permit Access to Supercooled Nematic Liquid Crystals with Stimuli-responsive Luminescence http://purl.org/coar/resource_type/c_6501