Characterization and properties of new color-tunable hybrid pigments based on layered double hydroxides (LDH) and 1,2-dihydroxyanthraquinone dye

Publication date: Available online 13 November 2018Source: Journal of Industrial and Engineering ChemistryAuthor(s): Anna Marzec, Bolesław Szadkowski, Jacek Rogowski, Waldemar Maniukiewicz, Marcin Kozanecki, Dariusz Moszyński, Marian ZaborskiAbstractIn 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 confirmed the role of C14H7O4Mg+ and C14H6O5Al− ions in the formation of the hybrids. Alizarin lakes has been recognized as a new class of colorants which demonstrated good color characteristics and chemical stability.Graphical abstractThe color changes of layered double hydroxides characterized by variable ratios of magnesium and aluminum (Mg:Al 30:70; Mg:Al 70:30) after modification with Alizarin dye.

Source: Journal of Industrial and Engineering Chemistry - November 14, 2018 Category: Chemistry Source Type: research