A novel boronic acid-based fluorescent sensor for selectively recognizing Fe³⁺ ion in real time.

ABSTRACT: Boronic acid provides faster fluorescence response to Fe³⁺ compared to other reported sensors, which is critical for continuous dynamic detection. Herein, we reported a novel boronic acid-based sensor 4 that could recognize Fe³⁺ ion in real time. After 10 equiv. of Fe³⁺ ion (1 mM) was added, the fluorescence of sensor 4 was immediately quenched by 96%. While other ions, including Ba²⁺, Ca²⁺, Cr²⁺, Cd²⁺, Co²⁺, Cs²⁺, Cu²⁺, Fe²⁺, K⁺, Li⁺, Mg²⁺, Mn²⁺, Na⁺, Ni²⁺ or Zn²⁺, respectively, did not change the fluorescence significantly. Further tests indicated that the high selectively sensing Fe³⁺

SUBMITTER: Fang G 

PROVIDER: S-EPMC9065501 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature