Twisted tethered tolanes

• Verfasst von: Menning, Sebastian [VerfasserIn]
• Verfasst von: Krämer, Maximilian [VerfasserIn]
• Verfasst von: Rominger, Frank [VerfasserIn]
• Verfasst von: Dreuw, Andreas [VerfasserIn]
• Verfasst von: Bunz, Uwe H. F. [VerfasserIn]
• Titel: Twisted tethered tolanes
• Titelzusatz: unanticipated long-lived phosphorescence at 77 K
• Verf.angabe: Sebastian Menning, Maximilian Krämer, Benjamin A. Coombs, Frank Rominger, Andrew Beeby, Andreas Dreuw, and Uwe H. F. Bunz
• Umfang: 4 S.
• Fussnoten: Gesehen am 14.12.2017
• Titel Quelle: Enthalten in: American Chemical Society: Journal of the American Chemical Society
• Jahr Quelle: 2013
• Band/Heft Quelle: 135(2013), 6, S. 2160-2163
• ISSN Quelle: 1520-5126
• DOI: doi:10.1021/ja400416r
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1566383293

Abstract

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.