New Generation Carboxyl Functionalized SiO2 Nanocomposite Encapsulated with Nd3+SIP Hydrogen Bonded Organic Framework (Ln3+-HOF) Support for NIR-Luminescence.

In this study, hydrothermally synthesized {[Nd(SIP)(H₂O)₄]}_n (NdSIP) and carboxylate-modified SiO₂ spheres were used to obtain SiO₂@NdSIP nanocomposites. Different concentrations of NdSIP in the range of 5–15%wt. were used in the hydrothermal synthesis of SiO₂@NdSIP nanocomposites. NdSIP has been structurally characterized by single crystal X-ray diffraction technique. NdSIP and SiO₂@NdSIP nanocomposites were characterized using various techniques including field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA), Hirshfeld surface analysis, Fourier transform infrared (FTIR), solid-state UV absorption and photoluminescence (PL) spectroscopy. [ABSTRACT FROM AUTHOR]