Linear homopolymer of norbornene (NBE) derivatives equipped with hydrophilic groups were prepared by ring-opening metathesis polymerization (ROMP) and were precisely assembled into well-defined structures in alcohol solvents. Controlling ratio of hydrophobic and hydrophilic groups at the repeating monomeric unit level in these polymers resulted in determining the size of spherical particles ranging from a few nm to mm. In addition, the concentration and molecular weights of the linear polymers readily controlled the size and distribution of polymer particles. The degree of solvation with various solvents possessing different surface tension and polarity systematically affected the final diameter and distribution of polymer particles. These observations clearly implied the important selection of proper solvent to regulate structural features of homopolymer particles. Investigating the assembly process of these types of homopolymers into uniform nanoscale particles can allow for understanding transformation of diverse linear amphiphilic polymers into well-defined structures.

Assembly of amphiphilic homopolymers into controlled nanoscale particles

2019 Spring National Meeting

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