zomethane (2,7-DPy-1-N(2)). The tripletcarbene DPy-(3)1 generated by photolysis of DPy-1-N(2) was characterized by ESR and UV-vis spectroscopy in a matrix at lowtemperature as well as by time-resolved UV-vis in solution at roomtemperature. The results showed that the tripletcarbene DPy-(3)1 was destabilized to some extent as opposed to the parent tripletcarbene before pyridination, but it was
Aryl‐substituted asymmetric anthracene blue host materials, 10‐naphthalene‐2‐yl‐9‐phenyl‐2‐triphenylsilylanthracene (6) and 9‐(4‐(tert‐butyl)phenyl)‐10‐(2‐methyl‐5‐(naphthalen‐1‐yl)phenyl)anthracene (7) were synthesized and characterized. Asymmetric anthracene derivatives 6 and 7 possessed high thermal stabilities that are suitable as emitting layer materials for blue organic light‐emitting device. The electroluminescence