A modular system for the simple and inexpensive production of security inks

Novel fluorescent dyes developed by ETH researchers are relatively simple and inexpensive to produce. The dyes are polymers with a modular structure. They consist of a different number of subunits depending on their color. The subunits used are chemically simple molecules that are either commercially available or can be produced by chemists in one reaction step.


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Source: Phys.org