Ruthenium tris(2,2′-bipyridyl) complex encapsulated in nanosized faujasite zeolite as intracellular localization tracer

Abstract

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Ru-Bipyridine Entrapped in the Supercages of EMC-1 Faujasite as Catalyst for the Trifluoromethylation of Arenes

“…29,30 Furthermore, an absorption spectrum (Figure 2b) was collected for Ru(bpy) 3 2+ containing an absorption band with a maximum at 451 nm, which is attributed to the metal-to-ligand charge transfer (MLCT) from the d-orbital of Ru to the π*-orbital of the bipyridine ligand. 30,31 The EMC-1-Ru, measured in diffuse reflectance mode, had a similar absorption pattern with a maximum at 453 nm, leading to the excitation of the photocatalyst in the visible-light region. Additionally, band gap calculations (via the Kubelka−Munk theory) from the UV−Vis data indicated that the HOMO−LUMO gap of the Ru-loaded material (2.6 eV) is in line with the MLCT of the homogeneous complex (Figure S6).…”

“…Fourier-transform infrared spectroscopy (FTIR) data confirmed the presence of Ru(bipy) 3 2+ based on the characteristic bands in the region 1400 to 1500 cm −1 , which are associated to the C−C and C−N stretch vibrations and/or the C−H in-plane bend of the 2,2′-bipyridine ligand (Figure S5). 29,30 Furthermore, an absorption spectrum (Figure 2b) was collected for Ru(bpy) 3 2+ containing an absorption band with a maximum at 451 nm, which is attributed to the metal-to-ligand charge transfer (MLCT) from the d-orbital of Ru to the π*-orbital of the bipyridine ligand. 30,31 The EMC-1-Ru, measured in diffuse reflectance mode, had a similar absorption pattern with a maximum at 453 nm, leading to the excitation of the photocatalyst in the visible-light region.…”

Internalization study of nanosized zeolite crystals in human glioblastoma cells

“…The nanosized FAU zeolite containing ruthenium complex (Ru(bpy)3-FAU) was used as a solid and as a colloidal suspension in double distilled water; the Ru(bpy)3-FAU was prepared according to the method reported by our group [13].…”

“…The samples exhibit high external surface area of 785 and 685 m 2 /g for Na-FAU-X and Gd-FAU-X, respectively. The characterization of sample Ru(bpy)3-FAU-X can be found in our recent article [13].…”

“…More recently, in vitro study with glioblastoma cells using nanozeolites with luminescent properties demonstrated their intracellular incorporation [13]. However, the internalization process of zeolites into glioblastoma cells and their precise intracellular localization is not clearly understood and require further studies.…”