ArticleAngewandte Chemie (International ed. in English)2022
Excited State Charge-Transfer Complexes Enable Fluorescence Color Changes in a Supramolecular Cyclophane Mechanophore.
Article in Angewandte Chemie (International ed. in English), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Force-Induced Control of Circularly Polarized Luminescence With Rotaxane Architecture.Angewandte Chemie (International ed. in English) · 2026Article
- Article
- Hinge-Like Mechanochromic Mechanophores Based on [2.2]Paracyclophane.Angewandte Chemie (International ed. in English) · 2025Article
- Article
- Mechano-responsive color changes of a Pt(ii) complex possessing triethylene glycol towards pressure sensors.RSC advances · 2025Article
- Advancing the Mechanosensitivity of Atropisomeric Diarylethene Mechanophores through a Lever-Arm Effect.Journal of the American Chemical Society · 2025Article
- An elegant approach for the synthesis of multisubstituted imidazoleRSC advances · 2024Article
- Sulphur-atom positional engineering in perylenimide: structure-property relationships and H-aggregation directed type-I photodynamic therapy.Chemical science · 2024Article
- Fluorescence-readout as a powerful macromolecular characterisation tool.Chemical science · 2023Review
- Microscopic strain mapping in polymers equipped with non-covalent mechanochromic motifs.Materials horizons · 2023Article
- Force-Triggered Atropisomerization of a Parallel Diarylethene to Its Antiparallel Diastereomers.Journal of the American Chemical Society · 2023Article
- Excited State Charge-Transfer Complexes Enable Fluorescence Color Changes in a Supramolecular Cyclophane Mechanophore.Angewandte Chemie (International ed. in English) · 2022Article
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5 authors.
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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. Mechanical deformation causes a decrease of the CT-emission and an increase of blue monomer emission, due to the spatial separation between the luminophore and quencher. The ratio of the two emission intensities correlates with the applied stress.
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