| 摘要 |
Fluorescent diketopyrrolopyrroles ("DPPs") of the formula I wherein R1 and R2, independently from each other, stand for C1-C25-alkyl, allyl which can be substituted one to three times with C1-C3alkyl or Ar3, -CR3R4-(CH2)m-Ar3, wherein R3 and R4 independently from each other stand for hydrogen or C1-C4alkyl, or phenyl which can be substituted on to three times with C1-C3 alkyl, Ar3 stands for phenyl or 1- or 2-naphthyl which can be substituted one to three times with C1-C8alkyl, C1-C8alkoxy, halogen or phenyl, which can be substituted with C1-C8alkyl or C1-C8alkoxy one to three times, and m stands for 0, 1, 2, 3 or 4, and wherein C1-C25-alkyl or -CR3R4-(CH2)m-Ar3, preferably C1-C25-alkyl, can be substituted with a functional group capable of increasing the solubility in water such as a tertiary amino group, -SO3<->, or PO4<2->, Ar1, and Ar2, independently from each other, stand for wherein R5 stands for C1-C6alkyl, -NR8R9, -OR10, -S(O)nR8, -Se(O)nR8, or phenyl, which can be substituted one to three times with C1-C8alkyl or C1-C8alkoxy, wherein R8 and R9, independently from each other, stand for hydrogen, C1-C25-alkyl, C5-C12</highl
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