β-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 the π–π stacking 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
摘要
β-二酮硼酸二
氟硼(BF2bdk)配合物因其出色的光物理性质而备受关注。但是,由于π-π聚集在一起,具有近红外荧光的BF2bdk通常遭受固态发射猝灭。在本文中,我们报道了一种BF2bdk
染料,表现出供体-受体(
DA)结构,其中二
氟硼部分充当电子受体,
氨基
萘作为电子供体。它在溶液和聚集体中的红色/近红外区域都具有强烈的摩尔消光系数,大斯托克斯位移和强荧光。它用于活细胞的近红外成像。