C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 333/04 (2006.01) C08G 61/12 (2006.01) C08G 75/06 (2006.01) C08G 77/60 (2006.01) C09K 11/06 (2006.01) H01L 51/30 (2006.01) H01L 51/50 (2006.01) H05B 33/14 (2006.01) H01L 33/00 (2006.01)
Patent
CA 2152922
The invention is directed to a light emitting diode (LED) emitting light having a wavelength from 400 to 850 comprising an electroluminescing material, electrodes and optionally carrier material and/or reflecting material, said electroluminescing material comprising at least one block copolymer consisting of at least two types of blocks, active blocks sandwiched between non-active blocks, said active blocks being a .pi.-conjugated block of at least 2 and at most 16 monomeric units, said .pi.-conjugated block having a substantially uniform block length throughout the copolymer, and said non-active block having no .pi.-conjugated, optionally with additional electron and/or hole transport properties, to polymers suitable for preparing such LED, to oligomers for preparing said multiblock copolymers and to various processes.
Gill Richard
Hadziioannou Georges
Herrema Jan
Malliaris George
Wieringa Reini
Fetherstonhaugh & Co.
Rijksuniversiteit Te Groningen
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