Abstract
Fluoroalkyl-end-capped 2-acrylamido-2-methylpropanesulfonic acid cooligomers containing adamantyl segments were prepared by reaction of fluoroalkanoyl peroxide with 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and 3-hydroxy-1-adamantyl acrylate (Ad-HAc). These obtained fluorinated AMPS-Ad-HAc cooligomers were found to form nanometer-size-controlled fine particles not only in water but also in a large variety of traditionally organic solvents. In addition, these fluorinated cooligomeric nanoparticles showed a good dispersibility in these solvents. Interestingly, the size of these fluorinated nanoparticles is extremely sensitive to solvent changes, and an increase of the particle size was observed in the solvents, in which the dielectric constant is higher or lower. More interestingly, these fluorinated AMPS-Ad-HAc cooligomeric nanoparticles exhibited a lower critical solution temperature around 52 degrees C in an organic medium (tert-butyl alcohol).
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