Pyrromethene metal complex and light emitting device composition and light emitting devices using the same
AssigneeToray Industries, Inc.
InventorsSeiichiro Murase, Tsuyoshi Tominaga, Akira Kohama
Life of this patent
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Abstract
A pyrromethene metal complex is used as a fluorescent dye to form a light emitting device. The light emitting device has a substance which brings about light emission between an anode and a cathode. By applying electrical energy, the device generates emission having an emission peak wavelength of 580 to 720 nm. The device contains at least one of: a diketopyrrolo[3,4-c]pyrrole derivative and an organic fluorescent material having a fluorescent peak wavelength of 580 to 720 nm; and a light emitting device composition containing a pyrromethene metal complex.
Claims9
A pyrromethene metal complex represented by formula (1):
- Wherein R1, R2, and L are each a substituent selected from the group consisting of hydrogen, alkyl, cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, hydroxyl, mercapto, alkoxy, alkylthio, aryl ether, aryl thioether, aryl, heterocyclic, halogen, haloalkane, haloalkene, haloalkyne, cyano, aldehyde, carbonyl, carboxyl, ester, carbamoyl, amino, nitro, silyl, siloxanyl, and a fused aromatic ring and an alicyclic ring formed with adjacent substituents, and R1, R2, and L may be the same or different;
- M is a metal having a valence of m and is selected from the group consisting of boron, beryllium, magnesium, chromium, iron, nickel, copper, zinc, and platinum;
- and Ar1 to Ar5 are aryl.
A pyrromethene metal complex represented by formula (2):
- Wherein R3 to R6 are each a substituent selected from the group consisting of hydrogen, alkyl, cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, hydroxyl, mercapto, alkoxy, alkylthio, aryl ether, aryl thioether, aryl, heterocyclic, halogen, haloalkane, haloalkene, haloalkyne, cyano, aldehyde, carbonyl, carboxyl, ester, carbamoyl, amino, nitro, silyl, siloxanyl, and a fused aromatic ring and an alicyclic ring formed with adjacent substituents, and R3 to R6 may be the same or different;
- and Ar6 to Ar10 are aryl.
A light emitting device wherein a substance which bring about light emission is present between an anode and a cathode, the light emitting device generates a emission having an emission peak wavelength in the range of 580 to 720 nm by electrical energy, and the substance which bring about light emission contains
- a pyrromethene metal complex represented by formula (1),
- wherein formula (1) is:
- wherein R1, R2, and L are each a substituent selected from the group consisting of hydrogen, alkyl, cycloalkyl, aralkyl, alkenyl, cycloalkenyl, alkynyl, hydroxyl, mercapto, alkoxy, alkylthio, aryl ether, aryl thioether, aryl, heterocyclic, halogen, haloalkane, haloalkene, haloalkyne, cyano, aldehyde, carbonyl, carboxyl, ester, carbamoyl, amino, nitro, silyl, siloxanyl, and a fused aromatic ring and an alicyclic ring formed with adjacent substituents, and R1, R2, and L may be the same or different;
- M is a metal having a valence of m and is selected from the group consisting of boron, beryllium, magnesium, chromium, iron, nickel, copper, zinc, and platinum;
- and Ar1 to Ar5 are aryl.
Dependencies are inferred from the claim text.