PET-based aqueous-stable two-phase perovskite nanoprobe for quantification of capsaicin in food samples.

We introduce an innovative two-phase-perovskite-based sensing platform for the ultrasensitive detection of capsaicin via a photo-induced electron transfer mechanism, with a limit of detection as low as 0.21 nM. Importantly, the successful use of this probe for monitoring capsaicin in real samples suggests its potential for use in the food sector.