Kinetics of fluoride-catalysed synthesis of organosilica colloids in aqueous solutions of amphiphiles

Hu, Teh Min; Lin, Chien Yu; Wu, Meng Ju

doi:10.1039/c9ra05509f

Cited by 3 publications

(1 citation statement)

References 48 publications

(59 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is well known that the fluoride anion has revealed as a versatile catalyst for sol-gel processes, indeed at nearly neutral pH and moderate temperatures, 30 although the kinetics of the reactions are still under study. 31 In contrast, NPNH2_G maintains a similar size distribution to that shown for NPNH2_IS, perhaps due to the presence of their organosilica shell. With respect to the physisorption studies (Table 1, Fig.…”

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 76%

Highly emissive hybrid mesoporous organometallo-silica nanoparticles for bioimaging

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Materials Advances Accepted Manuscriptmentioning

confidence: 76%

Highly emissive hybrid mesoporous organometallo-silica nanoparticles for bioimaging

et al. 2022

View full text Add to dashboard Cite

show abstract

Ammonium fluoride-catalyzed sol-gel route applied for curcumin-based pH sensors

Kazmirczak,

Cichero,

Santos

2024

Preprint

View full text Add to dashboard Cite

Curcumin has potential application as a colorimetric sensor and can be used, for example, to monitor the freshness of foods, although some of its physicochemical properties, such as solubility and stability, limit its use. In the present work, a natural curcumin extract was incorporated into organic‒inorganic hybrid silica matrices produced by the sol-gel method using ammonium fluoride as the main catalyst. A series of pH sensors based on the encapsulation of curcumin were prepared using a series of organosilanes (methytriethoxysilane, octyltriethoxysilane, octadecyltrimethoxysilane and 3-(aminopropyltriethoxysilane)) and were used in the synthesis of hybrid silicas. The effectiveness of the employed sol-gel route and the properties of the encapsulated materials were evaluated by a set of complementary analytical techniques, namely, infrared spectroscopy, 29Si solid-state nuclear magnetic resonance spectroscopy, nitrogen porosimetry, dynamic light scattering, confocal laser scanning microscopy and diffuse reflectance UV‒Vis spectroscopy. The immobilization of compounds in a solid matrix can cause a shift in the maximum absorption bands in the ultraviolet‒visible region as a result of interactions between the organic molecules and the solid support. The incorporation of curcumin into different silica matrices improved the performance of the sensors to up to 3.5 times greater than that obtained by the free compound when interacting with ammonia vapor.

show abstract

A Fast and Inexpensive Synthesis Route for Curcumin-Based Ph Sensors

Kazmirczak,

Cichero,

Dos Santos

2024

Preprint

View full text Add to dashboard Cite

Kinetics of fluoride-catalysed synthesis of organosilica colloids in aqueous solutions of amphiphiles

Abstract: Systematic real-time ATR-FTIR studies reveal ultrafast two-phase kinetics of sodium fluoride-catalysed synthesis of organosilica colloids in purely aqueous, amphiphile-assisted systems.

Cited by 3 publications

References 48 publications

Highly emissive hybrid mesoporous organometallo-silica nanoparticles for bioimaging

Highly emissive hybrid mesoporous organometallo-silica nanoparticles for bioimaging

Ammonium fluoride-catalyzed sol-gel route applied for curcumin-based pH sensors

A Fast and Inexpensive Synthesis Route for Curcumin-Based Ph Sensors

Contact Info

Product

Resources

About