| 摘要 |
<p>A fluorescent compound represented by formula (I), which has an absorption/fluorescence maximum in the near infrared region about from 680 nm to 750 nm. [R1 represents a hydrogen atom, an alkyl, or an aryl; R2 to R5 each represents a hydrogen atom, an alkyl, a hydroxy group, or a halogen atom; R6 and R7 each represents an alkyl; Z represents Si(R8)(R9), Ge(R8)(R9), or Sn(R8)(R9) (wherein R8 and R9 each is a hydrogen atom, an alkyl, or an aryl); X and Y each represents -C(R10)(R11)-, -C(R12)(R13)-C(R14)(R15)-, or -C(R16)=C(R17)- (wherein R10 to R17 each is a hydrogen atom, an alkyl, a hydroxy group, or a halogen atom); and M- represents an anion species when a counter ion is present.]</p> |
