Preparation of SiO2-g-PMMA hybrid materials employing different photocatalysts of metal-free ATRP and its application for oil-water separation

Temperature-Insensitive Nonpolar Suspensions of Polyoxyethylene Alkyl Ether-Grafted Silica Nanoparticles

“…The FT-IR spectra of the pristine SiO 2 , AEO3-SiO 2 , AEO7-SiO 2 , and AEO9-SiO 2 species exhibited two absorption peaks at ∼3440 and 1633 cm −1 , which were assigned to the bending and stretching vibrational modes of the −O−H bonds, respectively. In addition, two strong absorption peaks were present at 1107 and 808 cm −1 , which originated from the antisymmetric and symmetric stretching vibrations of Si−O−Si, 53 respectively (Figure 1a). Notably, the areas of the ∼3440 cm −1 peaks of AEO7-SiO 2 and AEO9-SiO 2 are smaller than that of the pristine SiO 2 , indicating that the surface hydroxyl groups of the silica NPs may react with AEOn.…”

Ultramicro and ultrasensitive detection of lipopolysaccharides based on triple-signal amplification via ultrafast ATRP and an ultramicroelectrode

“…21 Atom transfer radical polymerization (ATRP) is one of the “living/controlled” radical polymerization methods which can afford functional polymers with a predefined length, composition, dispersity and end group. 22 When it is used in signal amplification, thousands of repeating units can be associated through the chain growth and the signal generated in the recognition process of the target biomolecule is amplified hundreds of times, realizing highly sensitive analysis of biomolecules. 23 ATRP has become a common signal amplification strategy and has attracted more and more interest because of its mild reaction conditions, moderate reaction temperature, various monomers, tolerance to oxygen, and easy industrial production.…”