| 摘要 |
<p>Provided are a polycyclic compound of a specific structure having a À-conjugated heteroacene skeleton crosslinked with a carbon atoms, a nitrogen atom, or an oxygen atom, and a halogen compound which can be used for the synthesis of the polycyclic compound. Also provided is an organic electroluminescence device having one or more organic thin film layers including a light emitting layer between a cathode and an anode in which at least one layer of the organic thin film layers contains the polycyclic compound. The organic electroluminescence device shows high luminous efficiency and has a long lifetime.</p> |
