An Infrared Study of the Amine-Catalyzed Reaction of Methoxymethylsilanes with Silica

pH-controlled Release System for Curcumin based on Functionalized Dendritic Mesoporous Silica Nanoparticles

“…In the MCM-NH 2 and KCC-NH 2 samples, a band at 686 cm -1 due to the bending of N-H was detected. The C-N stretching vibration is normally observed in range of 1000-1200 cm -1 , however, due to the overlay with the IR absorptions of Si-O-Si in the range 1130-1000 cm -1 and of Si-CH2-R in the range 1250-1200 cm -1 , this peak was not observed in this region [54]. A peak at 1556 cm -1 was attributed to the symmetrical protonated form of amino groups (-NH 3 + ) bending, which confirmed the existence of amine groups [44,50].…”

Immobilization of Antibodies and Enzymes on 3-Aminopropyltriethoxysilane-Functionalized Bioanalytical Platforms for Biosensors and Diagnostics

“…The resulting structure of the obtained oxide layer is dependent on the method of production, such as thermal oxidation, plasma oxidation, physical and CVD, atomic layer deposition, magnetron sputtering, laser ablation, hydrothermal synthesis, and electrochemical anodization. Selective enrichment of surface hydroxyls is reported for KOH treatment of a vacuum heat-treated surface, while surface carboxyl groups can be selectively enriched by hot HNO 3 . 235 Freshly prepared borondoped diamond (BDD) electrodes are hydrogen terminated, 236−239 which are converted to oxygen-containing functional groups (i.e., carboxyl, carbonyl, and hydroxyl groups) upon anodic polarization.…”

Development and characterization of co-loaded curcumin/triazole-halloysite systems and evaluation of their potential anticancer activity

“…The frequency and assignments of each vibrational mode are based on previous halloysite reports (Yuan et al, 2008;Tonle et al, 2003;Vansant et al, 1995;White and Tripp, 2000;Madejova and Komadel, 2001;Vranken et al, 1992). Compared to p-HNT, 1 exhibits the CH 2 asymmetric and symmetric stretching at 2930 cm À1 and 2850 cm À1 respectively, the CH 2 scissoring at 1470 cm À1 and the stretching of the azido groups at 2103 cm À1 .…”