Rational design of time-resolved turn-on fluorescence sensors: exploiting delayed fluorescence for hydrogen peroxide sensing

Abstract
Weakly emissive phosphine compounds, which contain a carbazolyl donor−triarylboryl acceptor luminophore, become strongly delayed fluorescent upon changes to their oxide forms. Time-gated acquisition of the fluorescence signals of phosphine in the presence of H2O2 and a competitive fluorescence dye allow for detection of H2O2 with elimination of short-lived fluorescence noise.
Funding Information
  • National Research Foundation of Korea (2016R1D1A1B03930371, 2017R1A2B4002468, 2018R1A2B6006320)