Add time:08/18/2019         Source:sciencedirect.com

In this paper a novel, simple method for synthesis of lake pigments based on 1,2-dihydroxyanthraquinone dye and LDH carbonates was proposed. LDHs were modified with 1,2-dihydroxyanthraquinone, transforming the soluble dye into a new kind of hybrid lake. In result, the solvent resistance and photostability of the chromophore were improved, which may be attributed to strong dye–LDH interactions. TOF-SIMS technique was used for the first time to confirm the role of C14H7O4Mg+ and C14H6O5Al− ions in the formation of the hybrids. Alizarin lakes have been recognized as a new class of colorants which demonstrated good color characteristics and chemical stability.

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