One pot fabrication of fluorescein functionalized manganese dioxide for fluorescence "Turn OFF-ON" sensing of hydrogen peroxide in water and cosmetic samples.

ABSTRACT: In recent decades, H₂O₂ has been promoted as a health indicator because its moderate to high levels can cause some health problems. Herein, we developed a new fluorescent nanoprobe for rapid, selective and sensitive detection of H₂O₂. The fluorescent nanoprobe is composed of fluorescein dye (FLS) as a fluorescent probe and MnO₂ nanosheets (MnO₂ NS) as a quencher. In this study, H₂O₂ can reduce MnO₂ NS in the synthesized composite and release FLS, causing sufficient recovery of fluorescent signal related to the concentration of H₂O₂. The nanoprobe, with λ _ex/λ _em at 495/515 nm, has a linear range of 0.04-30 μM, with a limit of detection

SUBMITTER: Ali HRH 

PROVIDER: S-EPMC9053515 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature