2007
DOI: 10.1021/la700956b
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Abstract: Dense poly(N-isopropylacrylamide) (PIPAAm) brushes were created on silica bead surfaces by surface-initiated atom transfer radical polymerization (ATRP). Interfacial properties of PIPAAm brushes were characterized by thermoresponisve interaction with biomolecules. The grafted amounts of PIPAAm on silica bead surfaces exceeded that from previously reported polymer-hydrogel-modified silica beads prepared by conventional radical polymerization by nearly 1 order of magnitude. Temperature-dependent chromatographic … Show more

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Cited by 141 publications
(190 citation statements)
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“…The amount of PIPAAm grafted on the silica bead surfaces exceeded by nearly one order of magnitude that previously reported for polymer hydrogelmodified silica beads prepared by conventional radical polymerization. The surface-initiated ATRP of PIPAAm formed a densely grafted PIPAAm layer on the surface compared with the PIPAAm-grafted surfaces prepared by conventional radical polymerization (Nagase et al 2007).…”
Section: Surface-initiated Living Radical Polymerizationmentioning
confidence: 99%
See 1 more Smart Citation
“…The amount of PIPAAm grafted on the silica bead surfaces exceeded by nearly one order of magnitude that previously reported for polymer hydrogelmodified silica beads prepared by conventional radical polymerization. The surface-initiated ATRP of PIPAAm formed a densely grafted PIPAAm layer on the surface compared with the PIPAAm-grafted surfaces prepared by conventional radical polymerization (Nagase et al 2007).…”
Section: Surface-initiated Living Radical Polymerizationmentioning
confidence: 99%
“…This is due to the strong collective aggregation of densely grafted PIPAAm with the capillary lumen, which prevents steroid molecules from diffusing into the polymer brush layers at the interface. Nagase et al (2007) indicated that PIPAAm brush-grafted silica beads effectively interacted with hydrophobic analytes. The amount of PIPAAm grafted onto the silica bead surfaces exceeded by nearly one order of magnitude that previously reported with polymer hydrogel-modified silica beads prepared by conventional radical polymerization, because the surface-initiated ATRP of PIPAAm formed a densely grafted PIPAAm layer on the surface.…”
Section: Novel Polymer Brush Surfaces For Temperature-responsive Chromentioning
confidence: 99%
“…28 For example, Nagase et al developed PNIPAAm-based temperatureresponsive polymer brush surfaces on silica beads 29 and monoliths. 30 These materials were applied to all-aqueous temperature-responsive chromatography systems for the separation of biomolecules, peptides, and proteins.…”
Section: 3mentioning
confidence: 99%
“…Some types of functional surfaces were created by a surface modification method, including terminally, [18][19][20][21][22][23][24][25][26] cross-linked, [26][27][28][29] and created polymer brush. [29][30][31][32][33][34][35][36][37][38][39] For modification involving one end of a polymer to a silica surface, the synthesis of PNIPAAm was carried out by radical polymerization using 3-mercaptopropionic acid (MPA) as a chain-transfer agent. Using this method, PNIPAAm-grafted silica beads (3.0 or 5.0 μm of particle size) were activated by standard ester-amine coupling (Fig.…”
Section: Synthesis Of Polymer-modified Packing Materials 25mentioning
confidence: 99%