| abstract |
The present invention provides a fluorescent dye capable of improving fluorescence intensity at the time of labeling and capable of detecting a biomolecule with higher sensitivity. The fluorescent dye of the present invention is an organic EL dye having a conjugated system and comprising an azole derivative or an imidazole derivative containing one or more heteroatoms, selenium atoms, or boron atoms, and a linker containing a double bond. A nitrogen cation-containing group or a nitrogen-containing group bonded via Due to its high water solubility, the labeling rate for biomolecules can be improved, and highly sensitive biomolecules can be detected. [Selection] Figure 1 |