A panther chameleon skin-inspired core@shell supramolecular hydrogel with spatially organized multi-luminogens enables programmable color change

Organization of different iridophores into a [email protected] structure constitutes an evolutionary novelty for panther chameleons that allows their skins to display diverse color change. Inspired by this natural color-changing design, we present responsive multi-luminogen supramolecular hydrogel system generates programmable multi-color fluorescent Specifically, red Eu3+-amidopicolinate (R) luminogen is incorporated the core hydrogel, while blue naphthalimide (B) and green perylene-tetracarboxylic acid (G) luminogens are grown two shell hydrogels. The intensities G/B could then be controlled independently, which enables its emission programmed easily from or green, nearly covering full visible spectrum. Because differential excitation energies between these luminogens, desirable wavelength-dependent fluorescence also achieved. Colorful materials with patterned demonstrated anti-counterfeiting, opening up possibility utilizing bioinspired develop efficient versatile uses.