A curcumin-based AIEE-active fluorescent probe for Cu²⁺ detection in aqueous solution.

ABSTRACT: Curcuminoids have been extensively investigated as metal ion probes, but the intrinsic aggregation-caused-quenching (ACQ) characteristic of curcumin would hinder their applications in aqueous solution. Fortunately, tetraphenylethylene (TPE) could endow the compounds with aggregation-induced emission (AIE)/aggregation-induced enhanced emission (AIEE) characteristics to eliminate the ACQ effect. According to this strategy, a series of TPE-modified curcumin derivatives L1-4 were prepared and studied for their AIEE properties. Among the four TPE-curcumin analogues, only L1 particles have been successfully used as an on-off fluorescence probe for detecting Cu²⁺ in aqueous solution. The fluorescence titration experiment determined its detection limit of 1.49 × 10^-7 mol L

SUBMITTER: Lin Y 

PROVIDER: S-EPMC9170379 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature