Light-emitting fluorene-based copolymers, EL devices comprising the same and method of synthesis thereof
OwnerNam-Sung Cho, Do-Hoon Hwang +2inventors
InventorsNam-Sung Cho, Do-Hoon Hwang, Hong-Ku Shim, Jong-Chul Kim
Life of this patent
Estimating the term…
Abstract
Light-emitting copolymers and electroluminescence products made therefrom emitting a wavelength range from that of blue light to that of red light. The light-emitting copolymers are represented by the following Formula 1, in which the energy of blue light emission from a fluorene repeating unit on a blue light-emitting fluorene-based main chain is transferred to a red comonomer in the copolymer to emit red light. 1
Claims16
A light-emitting copolymer represented by the following formula 1:
- 13
- wherein R1 and R2 represent silyl groups, alkyl groups or alkoxy groups;
- and R3 and R4 represent alkyl groups.
A comonomer represented by the following formula 2
- 14
- wherein R1 and R2 represent silyl groups, alkyl groups or alkoxy groups.
The light-emitting copolymer poly{[9,9-bis(2′-ethylhexyl)fluorene]m-[2,7-diyl-co-2,5-bis(2-thienyl-1-cyanovinyl)-1-(2′-ethylhexyloxy)-4-methoxybenzene-5″,5″-diyl]n}.
The comonomer 2,5-bis-{2-(4-bromothienyl)-1-cyanovinyl}-2-(2-ethylhexyloxy)-5-methoxybenzene.
Dependencies are inferred from the claim text.