A benzoperylene self-assembly complex with turn-on excimer emission for wash-free cell membrane fluorescence imaging

Abstract

A rational design of a benzoperylene probe BP-3 with positive charge allows for turn-on excimer emission, and wash-free cell membrane imaging. BP-3 possesses excellent chemical, thermal and photo stability. And the Stokes shift of the excimer emission is considerably large (90–100 nm), which very much avoids the background fluorescence interference.