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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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
January 24, 2013
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| In: |
Journal of the American Chemical Society
Year: 2013, Volume: 135, Issue: 6, Pages: 2160-2163 |
| ISSN: | 1520-5126 |
| DOI: | 10.1021/ja400416r |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1021/ja400416r
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| Author Notes: | Sebastian Menning, Maximilian Krämer, Benjamin A. Coombs, Frank Rominger, Andrew Beeby, Andreas Dreuw, and Uwe H. F. Bunz |
| Summary: | 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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| Item Description: | Gesehen am 14.12.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1520-5126 |
| DOI: | 10.1021/ja400416r |