Fluorescent Molecular Photoswitches for the Generation of All‐Optical Encryption Keys

Abstract

AbstractHerein, we report a tri‐component photochromic molecular cocktail that can be used to encrypt and decrypt information. The time‐dependent fluorescent response of this cocktail is highly non‐linear with respect to the set of inputs used (concentrations of the three photochromic components, excitation‐ and emission wavelengths), a property required for the generation of so‐called encryption keys. The all‐optical system can generate more than 80 million unique fluorescence responses by applying different input combinations and is operated using a conventional fluorimeter.