Synthesis and properties of poly(acrylamide)s containing both long chain alkyl groups and phosphatidylcholine analogues in the side chains

Amphiphilic Poly(acrylamide)s Having Saturated and Unsaturated Dialkyl Chains and Phosphatidylcholine Groups in the Side Chains

“…These viscosity plots are similar to those of some phospholipid analogous copoly-(acrylamide)s containing the same hydrophobic side chains and different hydrophilic side chains in the side chains, 13 and some acrylamide homopolymers bearing both long chain alkyl groups and phosphatidylcholine analogues in their side chains. 25 This result suggests that the present copolymers having phosphatidylcholine moieties in the side chains show properties similar to those of usual polyelectrolytes. These phenomena may result from the mutual repulsion between N + and N + , particularly the possible chain expansion at low concentrations.…”

Mixed Stimuli-Responsive Magnetic and Gold Nanoparticle System for Rapid Purification, Enrichment, and Detection of Biomarkers

“…Polymers treated with 10 equivalents of HCl prior to NMR analysis, however, were found to have DMAEAm methyl group shifts at δ (ppm)=3.1 (s, R-N(C H 3 ) 2 . Previous studies have reported the proton shift of the DMAEAm methyl group in monomeric form to be δ (ppm)=2.26 (24). In analyzing Figure S2, the four protons located between the amide and tertiary amine groups of DMAEAm were also assigned to the peak at δ (ppm)=3.1, which therefore represented 10 DMAEAm protons.…”

“…The dicyclohexylurea byproduct was removed using a 0.2 µm syringe filter. Biotinylation efficiency was measured by commercially available HABA dyedisplacement assay (25). Known amounts of polymer were added to a solution of HABA-saturated avidin.…”

Polysiloxanes containing alkyl side groups: synthesis and mesomorphic behavior

“…In general, when the carbon numbers of alkyl side chain is more than 12, one or more sharp wide-angle diffraction of less than 4.2 Å occurs in comb-like vinyl polymers, 24-26 rigid-rod polymers, 27,28 and amphiphilic polymers with long alkyl side chains. 29,30 This large d-spacing of 16SP in the wide-angle region, 4.22 Å, indicates that paraffinic side chain crystallization does not occur. Instead, a less ordered structure, such as liquid crystal (smectic A or smectic B) or condis crystal, develops through strong dipole-dipole interactions between sulfone groups.…”