Twisted tethered tolanes: unanticipated long-lived phosphorescence at 77 K
Influencing the communication within a conjugated system as diphenylacetylene is a challenging subject in molecular electronics. Some examples of twisted tolanes are known, where high twists have been achieved in the solid state by steric encumbrance. The insertion of a spacer system is an alternati...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
January 24, 2013
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| In: |
Journal of the American Chemical Society
Year: 2013, Jahrgang: 135, Heft: 6, Pages: 2160-2163 |
| ISSN: | 1520-5126 |
| DOI: | 10.1021/ja400416r |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1021/ja400416r
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| Verfasserangaben: | Sebastian Menning, Maximilian Krämer, Benjamin A. Coombs, Frank Rominger, Andrew Beeby, Andreas Dreuw, and Uwe H. F. Bunz |
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| 520 | |a Influencing the communication within a conjugated system as diphenylacetylene is a challenging subject in molecular electronics. Some examples of twisted tolanes are known, where high twists have been achieved in the solid state by steric encumbrance. The insertion of a spacer system is an alternative way to tailor rotation. Only a few examples of such tethered tolanes exist, and they all suffer from small twist angles (<35°). We report on tolanophanes containing a malonyl tether, where twist angles of almost 80° were reached. Long-lived phosphorescence (4 s at 77 K) was recorded, and quantum-chemical calculations were performed to confirm the experimental results. | ||
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