Multi-scale assembly in nano-scaled sepia melanin natural dye

This study reports on a systematic investigation of the multi-scale hierarchical arrangements in/of the Sepia melanin nanospheres using ultrahigh resolution transmission electron microscopy combined with transmission and scanning electron microscopies. The morphological dynamic of the similar to 150 nm in average diameter melanin nanoparticles seem to be governed by self-assembly phenomenon before and after their final growth stages. (C) 2014 Elsevier Ltd. All rights reserved.