Silica core-shell nanoparticles

Figure 21.4 Influence of nanoparticle size on silica-type mesostructuie. (a, b) TEM micrographs showing mesostructuies with a nanoparticle volume fraction

Grasset, F., Labhsetwar, N., Li, D., Park, D.C., Saito, N., Haneda, H., Cador, O., Roisnel, T., Momet, S., Duguet, E., Portier, J., Etoumeau, J. Synthesis and magnetic characterization of zinc ferrite nanoparticles with different environments powder, colloidal solution, and zinc ferrite-silica core-shell nanoparticles. Langmuir 18, 8209-8212 (2002)... 

Fig. 4 TEM micrograph of NaYF4 Yb3r/silica core/ shell nanoparticles. Reprinted with permission from [26]. Copyright 2008 American Chemical Society...

Lee J, Lee Y, Youn JK, Na HB, Yu T, Kim H, Lee S-M, Koo Y-M, Kwak JH, Park HG, Chang HN, Hwang M, Park J-G, Kim J, Hyeon T (2008) Simple synthesis of functionalized superparamagnetic magnetite/silica core/shell nanoparticles and their application as magnetically separable high-performance biocatalysts. Small 4 143... 

A.Z. Badruddoza, M.T. Rahman, S. Ghosh, M.Z. Hossain, J. Shi, K. Hidajat, and M.S. Uddin, P-Cyclodextrin conjugated magnetic, fluorescent silica core-shell nanoparticles for biomedical applications, Carbohyd. Pol, 95 (1), 449-457,2013. 

Grasset F., Labhsetwar N., Li D., Park D C., Saito N., Haneda H., Cador O., Roisnel T., Mornet S., Duguet E., Portier J., Etoumeau J., Synthesis and Magnetic Characterization of Zinc Ferrite Nanoparticles with Different Environments Powder, Colloidal Solution and Zinc Ferrite-Silica Core-Shell Nanoparticles. Langmuir, 2002. 18 (21) p. 8209-8216. 

F. Magnan, J. Gagnon, F.G. Fontaine, D. Boudreau, Indium silica core-shell nanoparticles as plasmonic enhancers of molecular luminescence in the UV region. Chem. Commun. 49, 9299-9301 (2013)... 

There is some concern that these nanoparticles (and those of ZnO) are so active that they might catalyze the breakdown of DNA, but they do not appear to penetrate the outer layers of the skin. The positive aspect of this is the potential for using these same Ti02 nanoparticles for photo-killing of malignant cells—known as photodynamic therapy. TiOi and ZnO particles are actually being coated with silica so that the particle surface is more inert. (A use for core-shell nanoparticles.)... 

Size-tunable silica crosslinked micellar core-shell nanoparticles (SCMCSNs) from aPluronic nonionic surfactant (FI 27) template system with organic swelling agents such as 1,3,5-trimethylbenzene (TMB) and octanoic acid at room temperature... 

M. loubert, C. Delaite, E. Bourgeat-Lami, P. Dumas, Synthesis of poly(epsilon-caprolactone)-silica nanocomposites from hairy colloids to core-shell nanoparticles. New J. Chem. 2005, 29,1601-1609. 

In the previous section we have already described some multilayered systems [108] constituted by differently doped silica strata, but here we will report on a few examples of core-shell nanoparticles that combine the properties of different materials. Silica is a key component in this area since it offers unique characteristics of ease of synthesis, biocompatibility and a ductile chemistry able to merge many different substances including biomolecules, therefore opening up the possibility of using these new tools in the fields of biology and medicine [136, 137]. 

In another example, highly monodispersed (M,/M <1.01) core-shell nanoparticles with monodispersed silica core nanoparticle, and a metal oxide (Ti02 or Zr02) (Si02/Ti02, Si02/Zr02) with a diameter of... 

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