Advanced photonic circuits using a mechanofluorochromic diketopyrrolopyrrole derivative

This study explores, for the first time, the use of a diketopyrrolopyrrole (DPP) derivative as an optical waveguide for the fabrication of photonic circuits, where light transmission in different directions is possible depending on the excitation point. This is a key factor in the development of a new generation of miniaturized and versatile photonic chips. The DPP core was chosen for its thermal stability and exceptional optical properties, which are crucial for efficient light transmission in photonic devices, with a particular emphasis on the high fluorescence of the described derivative. Additionally, this compound exhibited a mechanofluorochromic response to mechanical stimuli. The reversible transition between different phases, along with its light-guiding capabilities, presents significant potential for practical applications, including security inks, rewritable materials, and advanced optical technologies.