Three-channel fluorescent sensing via organic white light-emitting dyes for detection of hydrogen sulfide in living cells.

To demonstrate the feasibility of development of three-channel based fluorescent sensors based on organic white light-emitting dyes, in this work, for proof-of-principle, we initially judiciously designed an organic white light-emitting dye, which was further used as a robust platform to engineer a new fluorescent sensor for monitoring H2S with turn-on fluorescence signals in blue, green, and red emission channels in both solution and living cells. This work should open a new avenue for design of three- and multiple-channel based fluorescent sensors for various analytes.