Abstract
Soft active camouflage has been developed in different routes. The current study introduces an updated method by using metal complex within a polyelectrolyte film. Ions of [Ni Tmeda Hacac][Formula: see text] were synthesized and incorporated into Nafion film, forming a solvatochromic responsive polyelectrolyte material. Under solvent environment, this polyelectrolyte gel changed its color from red to green, and was then bleached by heating. The mechanism is explained via the molecular coordination theory. Effect of solvent diffusion was studied experimentally by recording the progress and theoretically by establishing a multi-physics model. Two swelling processes were identified, coloration swelling (C-swelling) and dilution swelling (D-swelling). Wavelength and absorbance in light intensity are characterized by considering the material property and mechanical configuration. The results demonstrate the capability of flexible active camouflage using the Nafion-metal complex composites.
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