Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 22, Issue 13, Pages 4374-4378Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201600272
Keywords
materials science; mechanoresponsive luminescence; sensors; supramolecular chemistry; thermoresponsive luminescence
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Funding
- JSPS
- National Center of Competence in Research Bio-Inspired Materials
- Swiss National Science Foundation
- European Research Council [ERC-2011-AdG 291490-MERESPO]
- Adolphe Merkle Foundation
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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.
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