Metal complex, method for producing the same and optical device
First Claim
Patent Images
1. A bi-nuclear metal complex comprising:
- a bi-nuclear metal complex having the formula;
space="preserve" listing-type="equation">M.sub.2 (L.sup.1 -O).sub.m (L.sup.2 -O).sub.n (L.sup.3 -O).sub.3-m-n Xp,(I)wherein M is a metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd and Hg;
X is a halogen or an anion capable of pairing with an alkoxyl group or a phenoxyl group, m and n are, independently, integers of from 0 to 3, p is an integer of from 0 to 4;
L1, L2 and L3 are ligands individually different from each other and each is a ligand derived from a compound having a hydroxyl group and an aromatic nitrogen atom within the compound represented by the formulas;
##STR12## wherein R1 and R2 are independently a group or an atomic group;
R1 may form a ring in cooperation with an atom adjacent to the aromatic nitrogen atom and/or a part of R2 ; and
R2 together with the aromatic nitrogen atom and/or an atom adjacent to the nitrogen atom forms a ring.
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Abstract
A novel bi-nuclear metal complex with greater luminescence and higher electron transfer potency and an optical device such as organic EL devices using therein the metal complex, are provided, together with a method for producing the novel complex at a higher efficiency. The complex containing specific ligands is represented by the following general formula:
General formula I!:
M.sub.2 (L.sup.l -O).sub.m (L.sup.2 -0).sub.n (L.sup.3 -0).sub.3-m-n Xp
(wherein M represents a divalent metal atom or Zn; L1, L2 and L3 are ligands, individually different from each other;
X represents an anion;
"m" and "n" represent independently an integer of 0 to 3; and
"p" represents an integer of 0 to 4.).
25 Citations
26 Claims
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1. A bi-nuclear metal complex comprising:
a bi-nuclear metal complex having the formula;
space="preserve" listing-type="equation">M.sub.2 (L.sup.1 -O).sub.m (L.sup.2 -O).sub.n (L.sup.3 -O).sub.3-m-n Xp,(I)wherein M is a metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd and Hg;
X is a halogen or an anion capable of pairing with an alkoxyl group or a phenoxyl group, m and n are, independently, integers of from 0 to 3, p is an integer of from 0 to 4;
L1, L2 and L3 are ligands individually different from each other and each is a ligand derived from a compound having a hydroxyl group and an aromatic nitrogen atom within the compound represented by the formulas;
##STR12## wherein R1 and R2 are independently a group or an atomic group;
R1 may form a ring in cooperation with an atom adjacent to the aromatic nitrogen atom and/or a part of R2 ; and
R2 together with the aromatic nitrogen atom and/or an atom adjacent to the nitrogen atom forms a ring.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for making a bi-nuclear metal complex of the formula:
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space="preserve" listing-type="equation">M.sub.2 (L.sup.1 -O).sub.m (L.sup.2 -O).sub.n (L.sup.3 -0).sub.3-m-n Xp,(I)wherein M is a metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd and Hg;
X is a halogen or an anion capable of pairing with an alkoxyl group or a phenoxyl group, m and n are, independently, integers of from 0 to 3, p is an integer of from 0 to 4;
L1, L2 and L3 are ligands individually different from each other and each is a ligand derived from a compound having a hydroxyl group and an aromatic nitrogen atom within the compound represented by the formulas;
##STR15## wherein R1 and R2 are independently a group or an atomic group;
R1 may form a ring in cooperation with an atom adjacent to the aromatic nitrogen atom and/or a part of R2 ; and
R2 together with the aromatic nitrogen atom and/or an atom adjacent to the nitrogen atom forms a ring, said method comprising the steps of;reacting a metal salt having the formula; Mn X'"'"'2, wherein M is a metal as defined above and X'"'"' is the same as X defined above;
with at least one compound selected from the group consisting of L1 OH, L2 OH, L3 OH and mixtures of any of the foregoing, wherein L1, L2 and L3 are the same as defined above, in a C1 -C12 alcohol solvent. - View Dependent Claims (13, 14)
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- 15. An optical device comprising a luminescent layer and/or an electron transfer layer, said luminescent layer and said electron transfer layer comprising a bi-nuclear metal complex of the formula
- space="preserve" listing-type="equation">M.sub.2 (L.sup.1 -O).sub.m (L.sup.2 -O).sub.n (L.sup.3 -O).sub.3-m-n Xp,(I)
wherein M is a metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd and Hg;
X is a halogen or an anion capable of pairing with an alkoxyl group or a phenoxyl group, m and n are, independently, integers of from 0 to 3, p is an integer of from 0 to 4;
L1, L2 and L3 are ligands individually different from each other and each is a ligand derived from a compound having a hydroxyl group and an aromatic nitrogen atom within the compound represented by the formulas;
##STR18## wherein R1 and R2 are independently a group or an atomic group;
R1 may form a ring in cooperation with an atom adjacent to the aromatic nitrogen atom and/or a part of R2 ; and
R2 together with the aromatic nitrogen atom and/or an atom adjacent to the nitrogen atom forms a ring.- View Dependent Claims (16, 17, 18, 19, 20)
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21. An optical device comprising a luminescent layer and an electron transfer layer, said luminescent layer and said electron transfer layer comprising an aluminum complex having the formula:
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space="preserve" listing-type="equation">AI(L-O).sub.2 X,wherein X is a halogen or an anion capable of pairing with an alkoxyl group or a phenoxyl group, and L is a ligand derived from a compound containing a hydroxyl group and an aromatic nitrogen atom within the compound, wherein the hydrogen atom of the hydroxyl group is eliminated from the compound and having the formula;
##STR21## wherein R1 and R2 are independently a group or an atomic group;
R1 may form a ring in cooperation with an atom adjacent to the aromatic nitrogen atom and/or a part of R2 ; and
R2 together with the aromatic nitrogen atom and/or an atom adjacent to the nitrogen atom forms a ring. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification