High loading of C60 in nanochannels of mesoporous MCM-41 materials

MCM-41-based composite with enhanced stability for Cr(VI) removal from aqueous media

“…Additional vibrational bands observed at 2940 and 2970 cm À 1 , can be associated to C-H stretching modes from the organic attached functionalities chains, in MCM-41-NH 2 and MCM-41-NH 2 -CH 3 materials [36]. Aminopropyl moieties grafted on the pore walls of both modified MCM-41 samples can be inferred from the presence of a band at cm À 1 assignable to N-H bending vibration modes [37]. An additional small band at 1275 cm À 1 appears in the spectrum of MCM-41-NH 2 -CH which can be associated to Si-CH 3 moieties present [38].…”

Nanomaterials and singlet oxygen photosensitizers: potential applications in photodynamic therapy

“…Many similar methods have been developed to incorporate fullerenes into the micro-or meso-porous materials. [75][76][77] 5 Other research related to nanomaterials and singlet oxygen 5.1 Generation of singlet oxygen by semiconductor nanoparticles Semiconductor nanoparticles such as TiO 2 , ZnO, etc., are known as effective photocatalysts. Recently, these materials were shown to be capable of generating singlet oxygen by monitoring the photooxidation of methyl oleate and 2,2,6,6tetramethyl-4-piperidone.…”

Correlating Surface-Functionalization of Mesoporous Silica with Adsorption and Release of Pharmaceutical Guest Species

“…A similarly broad 13 C NMR signal was attributed C 60 species covalently bound to surface aminopropyl moieties in mesoporous MCM-41 silica, while sharp signals were observed for nonattached and mobile C 60 species. 42 Therefore, the 1D NMR analysis provides strong evidence that C 60 species incorporated into SBA-15-APS-C 60 H materials are, in fact, attached to surface aminopropyl groups. Based on these results, approximately 31% of aminopropyl groups at the silica surface have covalently bound C 60 functionalities, most of which likely reside at mesochannel surfaces nearby the silica particle surface because these regions are most accessible to solutions containing radical C 60 species during the postsynthetic attachment process.…”