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Optical properties of donor-acceptor phenylene-ethynylene systems containing the 6-methylpyran-2-one group as an acceptor |
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| Authors: | Collings Jonathan C Parsons Alexander C Porrès Laurent Beeby Andrew Batsanov Andrei S Howard Judith A K Lydon Donocadh P Low Paul J Fairlamb Ian J S Marder Todd B |
| Institution: | Department of Chemistry, University of Durham, Durham DH1 3LE, UK. |
| Abstract: | Donor-acceptor phenylene ethynylene systems containing the 6-methylpyran-2-one group, synthesized via classic or microwave-assisted Sonogashira cross-coupling, exhibit pronounced solvatochromism in fluorescence suggesting a highly polar excited state; 4-4-(4-N,N-dihexylaminophenylethynyl)phenylethynyl]-6-methylpyran-2-one has a fluorescence quantum yield >0.9 in cyclohexane. |
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