AIEgen-functionalized metal-organic gel as a bifunctional platform for efficient adsorption and portable sensing of gaseous iodine

Herein, we proposed a novel metal-organic gel ( YTU-G-1 ) for efficient adsorption and portable sensing of gaseous iodine. YTU-G-1 exhibits an unprecedentedly high detection sensitivity ( K SV = 2.21 × 10 6 L mol −1 ) and an extremely low limit of detection (LOD) down to the pmol level (481 pmol L −1 ). YTU-G-1 also shows a marked iodine adsorption capacity of 1.398 g g −1 . A wearable membrane was successfully fabricated via the electrospinning technique, which exhibits excellent skin-compatibility and serves as a portable tool for sensitive response to potential on-site nuclear emergencies. An AIEgen-functionalized luminescent metal-organic gel ( YTU-G-1 ) with an extremely high luminescence quantum yield (95.5%) was prepared for gaseous iodine capture (1.398 g g −1 ) and detection (LOD: 481 pmol L −1 ).