Figure 1.

Measurement of the fluorescent intensity of MNP-SiO₂(RITC).

Notes: Measurement of the fluorescent intensity of MNP-SiO₂(RITC) by GEN-2 Fluorescence Lifetime Spectrometer-Steady State Quanta Master (Photon Technology International, Birmingham, NJ, USA). We prepared nanoparticles with various amounts of organic dye (2.08 mg, 4.17 mg, 8.35 mg, and 12.52 mg) to increase the fluorescent intensity and optimize the synthesis.

Abbreviations: MNP-SiO₂(RITC), magnetic nanoparticle-SiO₂(rhodamine B isothiocyanate [RITC]); AU, absorbance units.