Widely used as a selective chelating agent for copper(I) ions in analytical chemistry, enabling detection and separation of Cu⁺ in complex mixtures. Employed in photometric and fluorometric assays due to its color and fluorescence changes upon metal binding. Commonly applied in environmental and biological samples for copper sensing. Also utilized in organic electronics as an electron-transport layer in OLEDs and photovoltaic devices, where it enhances device efficiency by blocking holes and improving charge balance. Its stability and high electron affinity make it valuable in solid-state lighting and solar cell research.