Stokes emission in GdF₃:Nd³⁺ nanoparticles for bioimaging probes.
Stokes emission in GdF₃:Nd³⁺ nanoparticles for bioimaging probes.
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DOI:
10.1039/c3nr03317a
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发表时间:
2014
期刊:
影响因子:
6.7
通讯作者:
Sardar DK
中科院分区:
文献类型:
--
作者:
Pokhrel M;Mimun LC;Yust B;Kumar GA;Dhanale A;Tang L;Sardar DK
There is an increasing interest in rare earth (RE) doped nanoparticles (NPs) due to their sharp absorption and photoluminescence (PL) in the near infrared (NIR) spectral region. These NIR based nanoparticles (NPs) could allow biological imaging at substantial depths with enhanced contrast and high spatial resolution due to the absence of auto fluorescence in biological samples under infrared excitation. Here, we present the highly efficient infrared photoluminescence in GdF3:Nd3+ nanoparticles under 800 nm excitation within the hydrodynamic size limitations for bio-applications. The downconversion (Stokes emission) absolute quantum yield (QY) measurements in powder, poly maleic anhydride- alt-1- octadicene (PMAO) coated powder and colloidal solutions have been investigated. QY measurements have revealed that downconversion(Stokes emission)QY in an average 5 ± 2 nm sized GdF3: 1% Nd3+colloidalNPs are 2000 times higher than efficient upconversion (UC) particles NaYF4: 20 % Er/ 2% Yb of same size. Furthermore, the utility of these NIR emitting nanoparticles forbioimagingprobe has been demonstrated by confocal imaging and spectroscopic study.
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影响因子:
10.4
作者:
Hardman R
通讯作者:
Hardman R
DOI:
10.1039/c3tb20905a
发表时间:
2013-11-07
期刊:
Journal of materials chemistry. B
影响因子:
--
作者:
Mimun LC;Ajithkumar G;Pokhrel M;Yust BG;Elliott ZG;Pedraza F;Dhanale A;Tang L;Lin AL;Dravid VP;Sardar DK
通讯作者:
Sardar DK
影响因子:
6.7
作者:
Boyer, John-Christopher;van Veggel, Frank C. J. M.
通讯作者:
van Veggel, Frank C. J. M.
影响因子:
2
作者:
NISWENDER, KD;BLACKMAN, SM;PISTON, DW
通讯作者:
PISTON, DW
影响因子:
56.9
作者:
Dubertret, B;Skourides, P;Libchaber, A
通讯作者:
Libchaber, A