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US 2012/0235132 A1Published application
Iridium complex compound, organic electroluminescent element, and uses thereof
OwnerTakashi Terashima, Isamu Taguchi +2inventors
InventorsTakashi Terashima, Isamu Taguchi, Masaru Tajima, Yoshiaki Takahashi
Life of this patent
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Abstract
It is an object of the present invention to provide a red phosphorescent compound having a high emission quantum yield, which is used for producing organic EL elements. The red phosphorescent compound of the present invention is an iridium complex compound represented by the following formula (1). In the formula (1), L1 is selected from the following formulas (2) and (3).
Claims13
An iridium complex compound represented by the following formula (1):
- wherein R1 to R4 are each independently a hydrogen atom, a fluorine atom, a cyano group, an alkyl group of 1 to 10 carbon atoms, or an alkyl group of 1 to 10 carbon atoms in which at least one hydrogen atom has been replaced with a fluorine atom, at least one of them is any one of a fluorine atom, a cyano group and an alkyl group of 1 to 10 carbon atoms in which at least one hydrogen atom has been replaced with a fluorine atom, R5 to R8 are each independently a hydrogen atom, an alkyl group of 1 to 30 carbon atoms, an aryl group of 6 to 40 carbon atoms, an aralkyl group of 7 to 40 carbon atoms, an amino group which may be substituted with an alkyl group of 1 to 30 carbon atoms, an alkoxy group of 1 to 30 carbon atoms, or a silyl group which may be substituted with an alkyl group of 1 to 30 carbon atoms, adjacent R groups of R1 to R8 do not undergo mutual bonding for forming a ring, L1 is selected from the following formulas (2) and (3), m is 1 or 2, n is 1 or 2, and m+n is 3,
- wherein R9 to R27 are each independently a hydrogen atom, a cyano group, a nitro group, a halogen atom, an alkyl group of 1 to 30 carbon atoms which may have a substituent, an alkylamino group of 1 to 30 carbon atoms which may have a substituent, an arylamino group of 6 to 30 carbon atoms which may have a substituent, an alkoxy group of 1 to 30 carbon atoms which may have a substituent, a halogenated alkoxy group of 1 to 30 carbon atoms which may have a substituent, an aromatic oxy group of 6 to 30 carbon atoms which may have a substituent, an aryl group of 6 to 40 carbon atoms which may have a substituent, a heterocyclic group of 3 to 30 carbon atoms which may have a substituent, a halogenated alkyl group of 1 to 32 carbon atoms which may have a substituent, an alkenyl group of 2 to 30 carbon atoms which may have a substituent, an alkynyl group of 2 to 30 carbon atoms which may have a substituent, a cycloalkyl group of 3 to 30 carbon atoms which may have a substituent, an electron attractive substituent (aldehyde group, acyl group of 2 to 10 carbon atoms, alkoxycarbonyl group of 2 to 10 carbon atoms, aminocarbonyl group of 1 to 10 carbon atoms, thiocyanate group or sulfonyl group of 1 to 10 carbon atoms), an aralkyl group of 7 to 40 carbon atoms, a silyl group which may be substituted with an alkyl group of 1 to 30 carbon atoms, or a group wherein at least one hydrogen atom in these groups has been replaced with a fluorine atom, at least one of R20 and R22 is an aryl group which may have a substituent, and adjacent R groups of R9 to R27 may be bonded to each other to form a ring.
Dependencies are inferred from the claim text.