Introducing Rigidity into the GFP Chromophore via a Boron Bridge: Insights and Application in Two-Photon Imaging

This is the authors' abstract. We don't add key points for this paper.

High Resolution Image Download MS PowerPoint Slide A new family of azaborine fluorophores, consisting of ten compounds, has been developed that mimics the chromophore of green fluorescent protein, with conformation locked by a hydroxyboron bridge. These fluorophores exhibit fluorescence Stokes shifts up to 100 nm (0.56 eV) and high brightness (>10 4 M –1 cm –1 ) in the 408–525 nm range. Their potential utility for sensing applications was demonstrated by constructing zinc sensors capable of detecting 100 micromolar Zn 2+ concentrations in biological systems with two-photon microscopy.