摘要
Difluoroboronβ-diketonate(BF2bdk)complexes have attracted much attention due to their outstanding photophysical properties.However,BF2bdk with near-infrared fluorescence usually suffer from emission quenching in solid state due to theπ-πstacking in aggregation.Herein,we report a BF2bdk dye exhibiting donor-acceptor(D-A)structure with the difluoroboron moiety acting as the electron acceptor and the aminonaphthalene as the electron donor.It processes intense molar extinction coefficient,large Stokes shift and strong fluorescence in red/NIR region in both solution and aggregations.It was used for NIR imaging in living cells.
Difluoroboron β-diketonate（BF2 bdk） complexes have attracted much attention due to their outstanding photophysical properties.However,BF2 bdk with near-infrared fluorescence usually suffer from emission quenching in solid state due to the π-π stacking in aggregation.Herein,we report a BF2 bdk dye exhibiting donor-acceptor（D-A） structure with the difluoroboron moiety acting as the electron acceptor and the aminonaphthalene as the electron donor.It processes intense molar extinction coefficient,large Stokes shift and strong fluorescence in red/NIR region in both solution and aggregations.It was used for NIR imaging in living cells.
基金
financially supported by National Natural Science Foundation of China(No.21525206)
