Awakening of high-energy phosphorescence by enhanced weak interactions for ratiometric detection of trichloromethane vapor

Abstract

This study reports a hybrid metal halide probe that selectively detects trichloromethane (TCM) vapor through a ratiometric phosphorescence response. Single crystal analysis reveals a new sensing mechanism where TCM-cation weak interactions enhance phosphorescence emission from the cationic chromophore. This mechanism broadens the design ideas for phosphorescent probes.