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)
作者简介
Corresponding Authors:Li-Ya Niu,E-mail:niuly@bnu.edu.cn;Professor Qingzheng Yang received his PhD in 2003 from the Technical Institute of Physics and Chemistry,Chinese Academy of Sciences(TIPC,CAS),under the supervision of Prof.Chen-Ho Tung and Li-Zhu Wu.After completing postdoctoral research with Prof.Pierre Braunstein at the University Louis Pasteur and with Prof.Roman Boulatov at the University of Illinois,he returned to TIPC in 2009 as a full professor.He moved to Beijing Normal University in 2014,where he is a professor of chemistry.He received an APA Prize for Young Scientist from the Asian and Oceanian Photochemistry Association in 2013,Distinguished Young Scholar award from NSFC and Advanced Newton Fellowship from Royal Society in 2015.His research interests cover photochemistry of supramolecular assemblies and fluorescent probes for bioimaging.
