A series of naphthalimide derivatives containing a benzoazole unit (benzothiazole, benzoxazole or benzimidazole) as electron-transporting unit was designed and synthesized, and their photophysical and electroluminescent properties were investigated. The key design of molecular structures included the use of carrier-transporting fragments, together with twisted molecular conformation that could eliminate the recrystallization tendency and favour the formation of a stable amorphous state. ITO/NPB/emissive layer/Mg∶Ag/Ag bilayer electroluminescent devices were fabricated. Green or yellow-green electroluminescence was obtained successfully with peak emission in the range 530–560 nm.
Research on Chemical Intermediates – Springer Journals
Published: Apr 15, 2009
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