A very convenient one-step synthesis to cross-linked polymeric nanoparticles by conventional radical copolymerization without the addition of stabilizers or surfactants was explored. Moreover, these nanoparticles exhibited excellent stability, activity and selectivity in the cycloaddition reaction of CO₂ to epoxides and could be separated from the products easily and reused.

http://www.rsc.org/publishing/journals/CC/article.asp?doi=B926901K