期刊
INORGANIC CHEMISTRY FRONTIERS
卷 6, 期 8, 页码 1962-1967出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9qi00157c
关键词
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资金
- National Key Basic Research Support Foundation of China [2015CB856301]
- National Scientific Foundation of China [21778002, 21571007, 21861162008, 81301160]
- Office of Science (BER)
- U.S. Department of Energy [DE-SC0008397]
- NCI of Cancer Nanotechnology Excellence Grant [CCNE-TR U54 CA119367, CA151459]
- U.S. Department of Energy (DOE) [DE-SC0008397] Funding Source: U.S. Department of Energy (DOE)
Near-infrared (NIR) emissive lanthanide (Ln) complexes are promising candidates for fluorescence imaging in the NIR-II region (1000-1700 nm) to combine the advantages of small organic molecules and inorganic metal ions. However, their metabolism in vivo and application in in vivo imaging are still unknown. In this work, we used water-soluble Yb3+ molecular probes with a quantum yield of ca. 10% in water, which showed a deep penetration (>3 mm) upon excitation at the Q band. One of the Yb3+ complexes, Yb-2, was successfully applied in high resolution non-invasive whole body, vasculature and lymph node imaging of small animals. The complex cleared from the body through hepatobiliary and renal systems, similar to most organic fluorophores. Importantly, we demonstrated the application of Yb-2 in fluorescence-guided sentinel lymph node surgery, showing the prospective application of lanthanide complexes as molecular probes in NIR-II whole body bioimaging and surgical operation.
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