## 3 Results and Discussion
### Preparation and Characterization of Magnetic Chiral PMO NPs  
In the same manner, we prepared magnetic chiral PMO NPs based on the same interfacial polycondensation techniques. As illustrated in Scheme 2, the hydrophobic magnetic nanoparticles, together with the chiral-bridged organosilane ligand (**4**), were added to the aqueous phase, which includes water, ethanol, and ammonium hydroxide (25%). By the end of this sol-gel process, spherical nanoparticles composed of 100% bridging chiral organosilane monomers filled with magnetite (Fe\({}_{3}\)O\({}_{4}\)) in their cores were formed. The resulting nanoparticles were analyzed by TEM and STEM spectroscopy, accompanied by energy-dispersive X-ray analysis (EDX). The representative TEM and STEM images in Figure 5 provided clear evidence of the special composition and ordering of the magnetite nanoparticles inside the core of the spherical nanoparticles. Moreover, the EDX spectrum confirms the elemental composition of the obtained chiral magnetic nanoparticles because it exhibits all the relevant peaks of carbon, nitrogen, oxygen, silicon, and iron in the detected organosilica network. Further elemental determination was conducted by X-ray powder diffraction (XRD) analysis utilized for identifying the structure of this system. The XRD pattern of the magnetic PMO nanoparticles (Figure 6) showed characteristic peaks of magnetite nanoparticles at 20 = 30.3, 35.7, 43, 53.8, 57.6,  
Figure 5: Energy-dispersive X-ray analysis (EDX) (**left**) and TEM-STEM (**right**) analysis of magnetic chiral PMO nanoparticles. and 63.4, in addition to a sharp peak at 20 = 1.8-2.7, which is attributed to the mesoscopic structure of the PMO nanoparticles. In addition, EDX-mapping analysis was also utilized to confirm the chemical composition and elemental distribution in our system. Figure 7 presents a homogeneous distribution of oxygen, carbon, and silicon throughout the organosilica network. With nitrogen, a similar distribution was also observed in a lower density. The magnetic naoparticles were concentrated in the core, which it was clearly confirmed by their narrow and specific distribution in the center of the resulting chiral PMO NPs. The average size of both systems was determined by dynamic light scattering (DLS) analysis, which revealed an average size of 173 nm of the chiral PMO NPs and an average size distribution of 190 nm for the magnetic chiral PMO NPs (Figure 8). The N\({}_{2}\) adsorption-desorption isotherms of the chiral PMO NPs and the magnetic chiral PMO NPs (Figure 9) exhibit typical IV-type curves that indicate narrow pore sizes with uniform mesopores. The Brunauer-Emmett-Teller (BET) surface area of chiral PMO NPs was estimated to be 497 m\({}^{2}\)/g, and the calculated total pore volume was 0.39 cm\({}^{3}\) g\({}^{-1}\), whereas the BET surface area of magnetic chiral PMO NPs was estimated to be 371 m\({}^{2}\)/g, and the calculated total pore volume was 0.23 cm\({}^{3}\) g\({}^{-1}\). These values are indeed quite large considering the low porosity of the resulting nanoparticles and the existence of Fe\({}_{3}\)O\({}_{4}\) cores. Figure 6: XRD analysis of magnetic chiral PMO nanoparticles. Figure 7: EDX-mapping analysis of magnetic chiral PMO nanoparticles. The chemical composition of the magnetic chiral PMO NPs was further characterized by solid-state \({}^{29}\)Si and \({}^{13}\)C cross-polarization/magic angle spinning(CP-MAS) NMR spectroscopy. This analysis was conducted after treatment with concentrated HCl, which was used for dissolving all the magnetite nanoparticles in the detected system. The \({}^{29}\)Si NMR spectrum in Figure 10 exhibited a T\({}^{3}\) value of \(-\)67.11 ppm, which confirms the formation of the Si-C covalent bonds in the organosilica framework.