| 摘要 |
<p>A luminescent element characterized by having a layer containing a metal coordination compound which has a partial structure MLm represented by the following general formula (2) and which as a whole is preferably represented by the following formula (3). MLmL'n (3) [In the formula, M represents a metal atom selected among iridium, platinum, rhodium, and palladium, and represent bidentate ligands different from each other; m is 1, 2, or 3 and n is 0, 1, or 2, provided that m+n is 2 or 3; the partial structure MLm is represented by the following general formula (2) (wherein B represents an isoquinolyl group bonded to the metal M through the "N" and cyclic group A, which is bonded to the 1- position carbon atom of the isoquinolyl group, is bonded to the metal M through the "C"); and the partial structure ML'n is represented by the following general formula (4), (5), or (6).] The luminescent element luminesces at a high efficiency, retains a high luminance over long, and is suitable for red luminescence.</p> |
