Self-assembly aggregation of highly stable copolynorbornenes with amphiphilic architecture via ring-opening metathesis polymerization

Various random copolymers with varying compositions of bicyclo[2.2.1]hept-5-en-2-ylmethyl octanoat (NBMO) and 5-(phthalimide methyl)-bicyclo[2.2.1]hept-2-ene (NBMPI) were synthesized using ring-opening metathesis polymerization (ROMP) to control the interaction and microstructure of the aggregates. The monomer NBMO was dissolved in 10 mL of methylene chloride and then degassed via a freeze-pump-thaw cycle. After degassing the monomer solution completely, the catalyst solution was injected into the monomer solution by a syringe. Novel stable copolynorborenes with sef-assembly amphiphilic architecture containing hydrophilic ammonium were obtained by ROMP, hydrogenation, hydrazinolysis, and subsequent quaternization.