Exploring the Photophysical Processes of an Al³⁺ Sensor Based on Schiff Base.

ABSTRACT: Schiff bases are commonly used as building blocks in the development of turn-on sensors for Al³⁺ detection. The isomerization of the CN bond in Schiff bases is generally believed to induce fluorescence quenching. Inhibiting this isomerization process through interactions with the target ion, Al³⁺, enhances fluorescence, enabling its detection. This mechanism is widely used to explain turn-on signals in similar sensors. However, the photophysical processes of such sensors may be more complex, necessitating a deeper understanding of their underlying sensing mechanisms. This study presents a comprehensive investigation into the photophysical processes and sensing mechanism of a turn-on sensor for Al³⁺ featuring a Schiff base moiety. Multiple excited-state int

SUBMITTER: Sun B 

PROVIDER: S-EPMC12447122 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature