Pressure-responsive AuNPs/Polyacrylamide Nanocomposite Hydrogel with Highly Stable and Tunable Electrochemiluminescence Performances

Synergistically taking the advantage of distinctive porous matrix, luminophore and functional nanoparticles, we prepared functional nanocomposite hydrogel combining the hydrophilic three-dimensional network of hydrogels as matrix for the adsorption of luminophore, Ru(bpy)(3)(2+), and in situ grown gold nanoparticles (AuNPs) as the conductive. Interestingly, the designed nanocomposite hydrogel shows external pressure resposnsive properties, which precisely tune the distance between the AuNPs becomes shorter, resulting in a remarkable amplification of electrochemiluminescence (ECL) signals. Additionally, differing from the poor stability of conventional ECL, uniform dispersion of the Ru(bpy)(3)(2+) over nanocomposite hydrogel significantly enhanced the long term stability of ECL.

Automated summary

The functional nanocomposite hydrogel, utilizing distinctive porous matrix, luminophore, and functional nanoparticles, shows external pressure responsive properties and remarkable amplification of electrochemiluminescence signals. Furthermore, the uniform dispersion of luminophore over nanocomposite hydrogel significantly enhances the long term stability of ECL compared to conventional methods.