Multiple Responsive Hydrogel Films Based on Dynamic Phenylboronate Bond Linkages with Simple but Practical Linear Response Mode and Excellent Glucose/Fructose Response Speed.

The equilibrium swelling degree (SD e ) of the film was then calculated using the following equation: considering that the decrease in the refractive index of the film is negligible, where OPL s and OPL d are the OPL of the swollen and dry films, respectively. (2) SD e = OPL s − OPL d OPL d As shown in Figure 3 B, regarding the SD e of the films as a function of the 3-AAPBA content, a clear trend was observed that SD e decreases with increasing 3-AAPBA content of the copolymers.

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