Boosting the down-shifting luminescence of rare-earth nanocrystals for biological imaging beyond 1500 nm.
Boosting the down-shifting luminescence of rare-earth nanocrystals for biological imaging beyond 1500 nm.
复制标题
增强稀土纳米晶体的下移发光,用于 1500 nm 以上的生物成像
DOI:
10.1038/s41467-017-00917-6
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发表时间:
2017-09-29
影响因子:
16.6
通讯作者:
Dai H
中科院分区:
文献类型:
--
作者:
Zhong Y;Ma Z;Zhu S;Yue J;Zhang M;Antaris AL;Yuan J;Cui R;Wan H;Zhou Y;Wang W;Huang NF;Luo J;Hu Z;Dai H
In vivo fluorescence imaging in the near-infrared region between 1500–1700 nm (NIR-IIb window) affords high spatial resolution, deep-tissue penetration, and diminished auto-fluorescence due to the suppressed scattering of long-wavelength photons and large fluorophore Stokes shifts. However, very few NIR-IIb fluorescent probes exist currently. Here, we report the synthesis of a down-conversion luminescent rare-earth nanocrystal with cerium doping (Er/Ce co-doped NaYbF4 nanocrystal core with an inert NaYF4 shell). Ce doping is found to suppress the up-conversion pathway while boosting down-conversion by ~9-fold to produce bright 1550 nm luminescence under 980 nm excitation. Optimization of the inert shell coating surrounding the core and hydrophilic surface functionalization minimize the luminescence quenching effect by water. The resulting biocompatible, bright 1550 nm emitting nanoparticles enable fast in vivo imaging of blood vasculature in the mouse brain and hindlimb in the NIR-IIb window with short exposure time of 20 ms for rare-earth based probes. Fluorescence imaging in the near-infrared window between 1500–1700 nm (NIR-IIb window) offers superior spatial resolution and tissue penetration depth, but few NIR-IIb probes exist. Here, the authors synthesize rare earth down-converting nanocrystals as promising fluorescent probes for in vivo imaging in this spectral region.
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影响因子:
5
作者:
GAPONTSEV, VP;MATITSIN, SM;KRAVCHENKO, VB
通讯作者:
KRAVCHENKO, VB
影响因子:
15
作者:
Murphy, JE;Beard, MC;Nozik, AJ
通讯作者:
Nozik, AJ
影响因子:
16.6
作者:
Naczynski, D. J.;Tan, M. C.;Zevon, M.;Wall, B.;Kohl, J.;Kulesa, A.;Chen, S.;Roth, C. M.;Riman, R. E.;Moghe, P. V.
通讯作者:
Moghe, P. V.
影响因子:
14
作者:
Li, Chunyan;Zhang, Yejun;Wang, Qiangbin
通讯作者:
Wang, Qiangbin
影响因子:
4.9
作者:
Nakane, Yuko;Tsukasaki, Yoshikazu;Jin, Takashi
通讯作者:
Jin, Takashi