| Difluoroboron β-diketonate dye with intense red/near-infrared fluorescence in solutions and solid states |
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| 摘 要： | Difluoroboron β-diketonate(BF_2 bdk) complexes have attracted much attention due to their outstanding photophysical properties.However,BF_2 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 BF_2 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.
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| 收稿时间： | 26 March 2019 |
Difluoroboron β-diketonate dye with intense red/near-infrared fluorescence in solutions and solid states |
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| Authors: | Nan Liu Peng-Zhong Chen Jian-Xin Wang Li-Ya Niu Qing-Zheng Yang |
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| Institution: | Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Difluoroboron 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 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. |
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| Keywords: | Corresponding author Near-infrared Solid state emission Bioimaging |
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