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

将不同的虹彩体组织成核壳结构，构成了黑豹变色龙的进化新奇，使它们的皮肤呈现出不同的颜色变化。受到这种自然变色设计的启发，我们提出了一种反应灵敏的核@壳结构多发光体超分子水凝胶系统，该系统可产生可编程的多色荧光变化。具体来说，红色Eu ³⁺-amidopicolinate（R）发光剂被掺入核心水凝胶，而蓝色萘二甲酰亚胺（B）和绿色per-四羧酸（G）发光剂被生长成两种超分子壳水凝胶。然后可以独立控制G / B发光剂的强度，这使其发光颜色可以轻松地从红色编程为蓝色或绿色，几乎覆盖了整个可见光谱。由于这些发光体之间的激发能量不同，因此还获得了所需的依赖于激发波长的荧光。还展示了具有图案化核壳结构的彩色材料可用于防伪，从而开辟了利用生物启发性核壳结构开发具有多种用途的高效多色荧光系统的可能性。