Fluorescent naphthalene-1,4,5,8-tetracarboxylic bisimides with an electron-donating substituent on the nucleus

Abstract

Naphthalene-1,4,5,8-tetracarboxylic bisimides of the general formula I where the variables are defined as follows: R1 and R2 independently of one another are hydrogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl; X and Y independently of one another are halogen, amino or a radical with the formula —NHR3, —OR3, where R3 has the formula —CH2R4, —CHR4R5, or —CR4R5R6, where R4, R5, and R6 independently of one another are hydrogen, substituted or unsubstituted alkyl, aryl, alkoxy, alkylthio, aryloxy or arylthio, and at least one of the two substituents X and Y is other than halogen, their preparation and use as fluorescent dyes, for coloring high molecular mass organic materials and inorganic materials, as laser dyes, and also for fluorescence marking and as fluorescent labels for biomolecules.

Dependencies are inferred from the claim text.