| 摘要 |
PROBLEM TO BE SOLVED: To provide a coloring matter having a large Stokes shift, slight reabsorption of fluorescence and good light resistance and to provide an optical amplifier using the same. SOLUTION: The coloring matter is a compound represented by formula [wherein, Ar<SP>1</SP>is an (m+n)-valent heterocyclic group; and Ar<SP>1</SP>to Ar<SP>5</SP>are each independently an aromatic hydrocarbon group or a heterocyclic group]. COPYRIGHT: (C)2004,JPO&NCIPI |
