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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Incorporation of Ln-Doped LaPO4 Nanocrystals as Luminescent Markers in Silica Nanoparticles

Fig. 3

TEM images of silica nanoparticles with a luminescent LaPO4 core. The medium in which the LaPO4 nanocrystals were dispersed prior to silica growth and the amount of methanol added during the reaction was varied resulting in different SiO2 particle sizes. a Particles of 28.3 ± 3.8 nm are obtained for DDA-capped LaPO4 particles suspended in toluene, no methanol added. b Particles of 33.4 ± 2.3 nm, similar to a with 50 μL methanol added. c Particles of 41.2 ± 3.1 nm, similar to a with 100 μL methanol added. d Particles of 53.5 ± 4.2 nm, similar to a with 150 μL methanol added. e Particles of 36.4 ± 2.8 nm are obtained for tributylamine-capped LaPO4 particles suspended in 100 μL methanol. f Zoom of silica particles shown in d

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