Conjugated Polyelectrolytes (CPs) have been successfully used as highly sensitive materials in chemo and biosensors for many years. But in general CPs were not very successful as a light emitting layer in polymer light-emitting diodes (PLEDs). Until recently, it was found that polyfluorene-based CPs and their precursors showed excellent unique characteristics different from the traditional conjugated polymers as light-emitting materials. In this review we summarize recent work on the design, synthesis of polyfluorene-based CPs and their precursors and their successful use in PLEDs.
Keywords: cationic polyfluorene, DMSO, Emission Layer, P-PPV device, polymers
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