Synthesis and electroluminescent properties of fluorene-based copolymers

Synthesis of Light-Emitting Conjugated Polymers for Applications in Electroluminescent Devices

“…The emission from these polymers can be significantly red-shifted by incorporating thiophene units so as to obtain the orange emitting 822 (λ max = 590 nm) and the red emitting (λ max = 613−672 nm) copolymers 823a − and 824 (Chart ) . The EL emission maximum of the red emitting copolymers 825 is tunable between 633 and 656 nm by increasing the amount of the dithienylbenzothiadiazole component from 1 mol % ( 825a ) to 15 mol % ( 825c ) .…”

Novel π-conjugated cyclophane polymers containing phenylamine moieties with strong blue-light emission

“…Although polymer-based light emitting diodes (PLEDs) that produce all three primary colors (red, green, and blue) have been developed, the green and orange PLEDs currently satisfy the requirements of commercial use. Therefore, various polymers for the intense blue LED, such as polymers containing fluorene [2][3][4][5][6] and biphenyl [7,8], have been synthesized and investigated.…”

P‐117: Efficiently Saturated Red Emission Polymers and Matrix Display

“…As known, polyfluorene (PFO) has a high luminescence efficiency and a wide energy band gap, normally giving off blue emission. Dow Chemical group has already obtained copolymers with various energy gaps via copolymerizing between fluorene and narrow energy-gap materials [9], and realized successfully tuning emission wavelength in the whole visible range. However, they focus only on alternating copolymers.…”