title: A Thermo- and Mechanoresponsive Cyano-Substituted Oligo(p-phenylene vinylene) Derivative with Five Emissive States.
abstract: Multiresponsive materials that display predefined photoluminescence color changes upon exposure to different stimuli are attractive candidates for advanced sensing schemes. Herein, we report a cyano-substituted oligo(p-phenylene vinylene) (cyano-OPV) derivative that forms five different solvent-free solid-state molecular assemblies, luminescence properties of which change upon thermal and mechanical stimulation. Single-crystal X-ray structural analysis suggested that tolyl groups introduced at the termini of solubilizing side-chains of the cyano-OPV play a pivotal role in its solid-state arrangement. Viewed more broadly, this report shows that the introduction of competing intermolecular interactions into excimer-forming chromophores is a promising design strategy for multicolored thermo- and mechanoresponsive luminescent materials.
authors: Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, 1700, Switzerland. sagara@es.hokudai.ac.jp.
authors: Yoshimitsu
authors: Y
authors: Sagara
authors: Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, 1700, Switzerland.
authors: Anna
authors: A
authors: Lavrenova
authors: Department of Chemistry & Fribourg Center for Nanomaterials FriMat, University of Fribourg, Chemin du Musée 9, Fribourg, 1700, Switzerland.
authors: Aurélien
authors: A
authors: Crochet
authors: Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, 1700, Switzerland.
authors: Yoan C
authors: YC
authors: Simon
authors: Department of Chemistry & Fribourg Center for Nanomaterials FriMat, University of Fribourg, Chemin du Musée 9, Fribourg, 1700, Switzerland.
authors: Katharina M
authors: KM
authors: Fromm
authors: Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, 1700, Switzerland. christoph.weder@unifr.ch.
authors: Christoph
authors: http://orcid.org/0000-0001-7183-1790
authors: C
authors: Weder
mesh_terms: D018360:Crystallography, X-Ray; D049449:Luminescence; D015394:Molecular Structure; D009570:Nitriles / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D009570:Nitriles; D011145:Polyvinyls; C530822:oligo(p-phenylene vinylene)
keywords: materials science; mechanoresponsive luminescence; sensors; supramolecular chemistry; thermoresponsive luminescence