Engineering a twist in 9,10-diethynylanthracenes by steric interactions
A series of 9,10-bis(phenylethynyl)anthracenes decorated with sterically demanding tert-butyl substituents have been prepared and spectroscopically characterised. We demonstrate that the introduction of two bulky substituents in the ortho position of the phenyl rings effectively locks the ground sta...
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| Veröffentlicht in: | Photochemical & photobiological sciences 2007-09, Vol.6 (9), p.982-986 |
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| container_end_page | 986 |
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| container_issue | 9 |
| container_start_page | 982 |
| container_title | Photochemical & photobiological sciences |
| container_volume | 6 |
| creator | Beeby, Andrew Findlay, Karen S Goeta, Andrés E Porrès, Laurent Rutter, Simon R Thompson, Amber L |
| description | A series of 9,10-bis(phenylethynyl)anthracenes decorated with sterically demanding tert-butyl substituents have been prepared and spectroscopically characterised. We demonstrate that the introduction of two bulky substituents in the ortho position of the phenyl rings effectively locks the ground state into a conformation in which the three rings are orthogonal. Fluorescence spectroscopy reveals evidence for partial planarisation of this compound in the excited state at ambient temperature, but this is prevented in low temperature solvent glasses. |
| doi_str_mv | 10.1039/b707750e |
| format | Article |
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| ispartof | Photochemical & photobiological sciences, 2007-09, Vol.6 (9), p.982-986 |
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| language | eng |
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| source | SpringerNature Journals; Royal Society of Chemistry Journals Archive (1841-2007); Royal Society Of Chemistry Journals 2008- |
| title | Engineering a twist in 9,10-diethynylanthracenes by steric interactions |
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