期刊
MOLECULES
卷 24, 期 20, 页码 -出版社
MDPI
DOI: 10.3390/molecules24203657
关键词
near-infrared fluorescence; bio-tissue; fluorescence imaging; fluorescence probe molecules; UV-Vis-NIR; wide-optical-range imaging
资金
- China National Key RD Program [2017YFB1103202]
- Jiangsu State RDProgram [BE2018010]
- LSU Leveraging Innovation for Technology Transfer (LIFT2) Grant [LSU-2019-LIFT-003]
- Board of Regents Support Fund (BoRSF) [LEQSF(2018-21)-RD-A-09]
- LSU Biomedical Collaborative Research Program [008481]
- Chongqing Research Program of Basic Research, Frontier Technology [cstc2017jcyjAX0469]
- Louisiana Research Competitiveness Subprogram (RCS)
The development of nanomaterials with special optical window is critical for clinical applications and the optoelectronic industry. In this work, eight kinds of samarium-based metal organic compound nanoparticles (Sm-Fe, Sm-Ga, Sm-Mn, Sm-Na, Sm-Nb, Sm-W, Sm-Cu, and Sm-Al) were synthesized through a solution method. They show polychromatic-photoluminescence spectra extended from the UV to near-infrared (NIR) region when excited by 280 nm, 380 nm, 480 nm, 580 nm, and 785 nm light. They emit direct white light with respect to UV excitation. Tunable white-to-green fluorescence can be achieved by variation of excitation light around 300-400 nm. When they are excited by a 785 nm light source, they show intense fluorescence around 800-1100 nm, which is promising for NIR bio-imaging. Their application in multicolor ultra-wide-range bio-tissue fluorescence imaging is demonstrated by UV (359-371 nm), blue (450-490 nm), green (540-552 nm), and NIR light (central wavelength = 785 nm) excitation with pig kidney tissue samples.
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