Advanced Materials

Cover image for Vol. 27 Issue 20

May 22, 2002

Polyfluorenes for efficient and stable blue LEDs...

Poly[9,9-bis(triphenylamine)fluorene] has been incorporated into LED devices as a hole-transporting emissive layer. This polymer not only exhibits an initial pure blue emission with no aggregate/excimer emission, but also a much improved hole injection over standard poly(9,9-dialkylfluorene)s (K. Müllen et al., Adv. Mater. 2002, 14, 809-811).

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