writer：Shuxin Wei, Wei Lu,* XX Le, CX Ma, H Lin, BY Wu, JW Zhang, P Theato, and Tao Chen*
keywords：Bioinspired Synergistic, Fluorescence-Color Switchable, Polymeric Hydrogel, Actuator
source：期刊
specific source：Angew Chem Int Ed, 2019, Inpress
Issue time：2019年

Natural livings normally have amazing control over the color, shape or morphology for camouflage, communication or even reproduction in response to interplay between several environmental stimuli. Such interesting phenomenon inspires scientists to develop smart soft actuators/robotics via integrating color-changing functionality based on polymer films or elastomers. However, there is still no important progress with synergistic color-changing and shape-morphing capabilities in life-like material system such as soft wet hydrogel. Herein, we reported a new class of bioinspired synergistic fluorescence-color switchable polymeric hydrogel actuator based on supramolecular interaction of dynamic metal-ligand coordination. Artificial hydrogel apricot flowers and chameleons are fabricated for the first time, in which simultaneous color-changing and shape-morphing behaviors are controlled by a subtle interplay between acidity/alkalinity, metal ions and temperature. This work has made color-changeable soft machines accessible and is expected to hold wide potential applications in biomimetic soft robotics, biological sensors, and camou?age applications.