Twisted tethered tolanes: unanticipated long-lived phosphorescence at 77 K.
J Am Chem Soc
; 135(6): 2160-3, 2013 Feb 13.
Article
en En
| MEDLINE
| ID: mdl-23346929
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.
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Temperatura
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En
Revista:
J Am Chem Soc
Año:
2013
Tipo del documento:
Article
País de afiliación:
Alemania