2018
DOI: 10.1039/c8sc00927a
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Intense near-infrared-II luminescence from NaCeF4:Er/Yb nanoprobes forin vitrobioassay andin vivobioimaging

Abstract: We report the controlled synthesis of monodisperse NaCeF4:Er/Yb nanoprobes that exhibit intense NIR-II emission for in vitro bioassay and in vivo bioimaging.

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Cited by 152 publications
(103 citation statements)
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“…Thus, it has emerged as the next-generation imaging technique for in vivo biomedical imaging. [23][24][25][26][27][28][29][30][31] Nevertheless, like most of reported NIR-II inorganic nanoparticles, long retention in reticuloendothelial system (RES) and inability to clear from living body lead to the existing dilemmas in the RENPs, which also raise the potential safety concerns and greatly hamper their future broad biomedical applications and translation. [20][21][22][23][24] However, tedious synthetic procedure and low quantum yield of organic molecules are still the main chemical impediments that make them lie behind the inorganic counterparts.…”
Section: Introductionmentioning
confidence: 99%
“…Thus, it has emerged as the next-generation imaging technique for in vivo biomedical imaging. [23][24][25][26][27][28][29][30][31] Nevertheless, like most of reported NIR-II inorganic nanoparticles, long retention in reticuloendothelial system (RES) and inability to clear from living body lead to the existing dilemmas in the RENPs, which also raise the potential safety concerns and greatly hamper their future broad biomedical applications and translation. [20][21][22][23][24] However, tedious synthetic procedure and low quantum yield of organic molecules are still the main chemical impediments that make them lie behind the inorganic counterparts.…”
Section: Introductionmentioning
confidence: 99%
“…To render the hydrophobic CaS:Ln 3+ NPs hydrophilic, we coated the NPs with alayer of Lipo through ligand adsorption (Figure 4a). [14] Thes uccessful conjugation of Lipo to the NP surface was verified by FTIR spectroscopy,T EM, thermogravimetric analyses,a nd dynamic light scattering measurements ( Figure S8-S10). TheL ipo-coated NPs preserved intense NIR-II luminescence from their pristine oleatecapped NPs with nearly unchanged PL intensities and PL lifetimes ( Figure S11 and S12).…”
mentioning
confidence: 87%
“…Er 3+ concentration-dependent a) PL emission spectra (l ex = 450 nm), and PL decays from b) 4 I 13/2 level of Er 3+ and c) 5d state of Ce 3+ in CaS:0.07 %Ce 3+ , x%Er 3+ NPs by monitoring the Er 3+ and Ce 3+ emissions at 1540 nm and 565 nm, respectively.Nd 3+ concentration-dependent d) PL emission spectra (l ex = 450 nm), and PL decays from e) 4 F 3/2 level of Nd 3+ and f) 5d state of Ce 3+ in CaS:0.07 %Ce 3+ , x%Nd 3+ NPs by monitoring the Nd 3+ and Ce 3+ emissions at 1070 nm and 565 nm, respectively.g)Schematic of the ET from Ce 3+ to Er 3+ and Nd 3+ in CaSNPs. [14] Therefore,t he H 2 O 2 concentration can be quantified by measuring the NIR-II PL of CaS:Ce 3+ ,Er 3+ NPs (Figure S17 b). of the NPs under blue-LED excitation by addition of different amounts of H 2 O 2 .I tw as found that the integrated PL intensity of Er 3+ in the NPs decreased gradually with increasing time and H 2 O 2 concentration (Figure 4c and Figure S17 a) as ar esult of the decreased ET from Ce 3+ to Er 3+ as Ce 3+ is oxidized by H 2 O 2 .…”
mentioning
confidence: 99%
“…[77] Copyright 2016, American Chemical Society. [75] Apart from emitter and sensitizer ion dopant amounts, Prasad and coworkers also demonstrated a significant enhancement of NIR II emission when using inert shells. Reproduced with permission.…”
Section: Optimization Of Rare Earth-doped Nanoprobesmentioning
confidence: 99%