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(a) Molecular structures of the pigments used in this work: indanthrene, epindolidione, phthalocyanine, indigo, and quinacridone (QA). (b) The protection–deprotection strategy employed in this work to synthesize colloidal pigment nanocrystals is shown for quinacridone, as an example. It starts from insoluble pigment powders, makes use of soluble latent pigments as precursors for the nanocrystal growth, and provides as a result colloidal nanocrystal dispersions.
