{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Thazhathethil S"],"funding":["Foundation for Promotion of Material Science and Technology of Japan","Adolphe Merkle Foundation","Core Research for Evolutional Science and Technology","Fusion Oriented REsearch for disruptive Science and Technology","Murata Science Foundation","National Center of Competence in Research Bio-Inspired Materials, University of Fribourg"],"pagination":["e202209225"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9804172"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["61(42)"],"pubmed_abstract":["Mechanochromic mechanophores are reporter molecules that indicate mechanical events through changes of their photophysical properties. Supramolecular mechanophores in which the activation is based on the rearrangement of luminophores and/or quenchers without any covalent bond scission, remain less well investigated. Here, we report a cyclophane-based supramolecular mechanophore that contains a 1,6-bis(phenylethynyl)pyrene luminophore and a pyromellitic diimide quencher. In solution, the blue monomer emission of the luminophore is largely quenched and a faint reddish-orange emission originating from a charge-transfer (CT) complex is observed. A polyurethane elastomer containing the mechanophore displays orange emission in the absence of force, which is dominated by the CT-emission. Mechanic"],"journal":["Angewandte Chemie (International ed. in English)"],"pubmed_title":["Excited State Charge-Transfer Complexes Enable Fluorescence Color Changes in a Supramolecular Cyclophane Mechanophore."],"pmcid":["PMC9804172"],"funding_grant_id":["JPMJPR17P6","51NF40-182881","JP18H02024","JPMJFR201N"],"pubmed_authors":["Muramatsu T","Thazhathethil S","Tamaoki N","Sagara Y","Weder C"],"additional_accession":[]},"is_claimable":false,"name":"Excited State Charge-Transfer Complexes Enable Fluorescence Color Changes in a Supramolecular Cyclophane Mechanophore.","description":"Mechanochromic mechanophores are reporter molecules that indicate mechanical events through changes of their photophysical properties. Supramolecular mechanophores in which the activation is based on the rearrangement of luminophores and/or quenchers without any covalent bond scission, remain less well investigated. Here, we report a cyclophane-based supramolecular mechanophore that contains a 1,6-bis(phenylethynyl)pyrene luminophore and a pyromellitic diimide quencher. In solution, the blue monomer emission of the luminophore is largely quenched and a faint reddish-orange emission originating from a charge-transfer (CT) complex is observed. A polyurethane elastomer containing the mechanophore displays orange emission in the absence of force, which is dominated by the CT-emission. Mechanic","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Oct","modification":"2026-03-16T08:08:11.784Z","creation":"2025-04-05T12:09:40.163Z"},"accession":"S-EPMC9804172","cross_references":{"pubmed":["35950260"],"doi":["10.1002/anie.202209225"]}}