Photo- and hydro-responsive inks for double-encryption applications

Dual hydro- and photo-responsive color switching systems with fast response and high colorreversibility have attracted much attention in developing smart material applications. In this regard,we proposed an efficient strategy for fabricating dual-responsive rewritable papers using smartcompounds. Here, polymer inks were prepared by physical incorporating fluorescein and oxazolidineinto polymeric latexes synthesized by emulsifier-free emulsion polymerization and then coated oncellulose paper via layer-by-layer method to develop dual-responsive security papers. The resultsdemonstrate the ability of these inks to be used in rewritable papers and the effect of the mediapolarity on the size of the nanoparticles and the emission of fluorescence materials under UV light

کلیدواژه ها:

Smart polymer ، Dual-responsivity ، Rewritable papers ، Fluorescein ، Oxazolidine