A Combinatorial Approach for the Fabrication of Magneto-Optical Hybrid Nanoparticles

Figures & data

Table 1 Average Sizes (Z-Average) and Polydispersity Index (PDI) of SPIO Nanoparticles Conjugated to QDs

Sample	d (nm)	PDI
SPIO-DX	27.89	0.15
SPIO-DX-PEI	47.13	0.24
SPIO-DX-PEI-AgInS2/ZnS-PEI	210.4	0.21
SPIO-OLA	16.59	0.10
SPIO-PEI	95.44	0.22
SPIO-PEI-AgInS2/ZnS	208.9	0.16

Figure 1 Schematic representation of MOHNPs, which are comprised of SPIO and QDs NPs.

Figure 2 TEM micrographs of synthesized AgInS₂/ZnS (A), CuInS₂/ZnS (B) QDs and SPIO NPs synthesized in aqueous solution (C), oleylamine (D).

Figure 3 The hydrodynamic diameter of hybrid NPs at different stages of assembly using SPIO NPs synthesized in aqueous solution (A), oleylamine (B).

Figure 4 Zeta potential of hybrid NPs at different stages of fabrication.

Figure 5 High-resolution TEM images of SPIO NPs incorporated into silica (A) and further coated by AgInS²/ZnS QDs (B) with low-resolution TEM image (C) of a large number of NPs than in (B).

Figure 6 Hybrid NPs placed in magnetic concentrator under ambient light (A) and UV-irradiation (B).

Figure 7 Optical absorption and photoluminescence spectra of differently structured hybrid NPs containing AgInS₂/ZnS (A–C), CuInS₂/ZnS (D) with the composition SPIO-DX-PEI-QDs-PEI (A–C), SPIO-PEI-QDs (D), SPIO-SiO₂-PEI-QDs-PEI (C, D) to allow tuning of the emission wavelength of the resulting hybrid probes.