Conjugated polycarbazole derivatives in organic light...

Details Conjugated polycarbazole derivatives in organic light... Conjugated polycarbazole derivatives in organic light...

H - Electricity

01

L

H01L 51/54 (2006.01)

Patent

CA 2344084

1. An Organic Light Emitting Diode (OLED) includes as active material a conjugated poly(N-alkyl-2,7-carbazole) derivative described by the formula: (see above formula) wherein n is an integer of about 3 to about 100, and R represents a substituant that is a linear or branched alkyl group containing 1 to 22 carbon atoms, or poly(ethyleneoxy), cyano, aryl, amide or benzoyl. Such OLEDs have improved light emitting properties, especially in the blue and red regions of the spectrum.

Une diode électroluminescente organique (DELO) renferme, comme matière active, un dérivé conjugué de poly(N-alkyl-2,7-carbazole) correspondant à la formule (voir la formule ci-dessus), où n est un nombre entier entre environ 3 et environ 100, et R est un substituant alkyle linéaire ou ramifié comptant 1 à 22 atomes de carbone, ou un substituant poly(éthylèneoxy), cyano, aryle, amide ou benzoyle. Ces DELO possèdent des propriétés d'électroluminescence améliorées, surtout dans les régions du bleu et du rouge du spectre électromagnétique.

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