| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a new rare-earth metal complex composition stably exhibiting high emission intensity and showing high solubility in organic medium. <P>SOLUTION: The rare-earth metal complex composition includes aβ-keto-amidonato ligand represented by formula (1) (wherein R<SP>1</SP>is saturated hydrocarbon which may be substituted or the like; R<SP>2</SP>is a hydrogen atom or the like; R<SP>3</SP>is aryl which may be substituted or the like; R<SP>4</SP>is hydrogen or the like; R<SP>1</SP>and R<SP>2</SP>, R<SP>2</SP>and R<SP>3</SP>or R<SP>4</SP>or R<SP>3</SP>and R<SP>4</SP>may be bonded to form a ring) coordinated in a rare-earth metal ion. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
