Abstract
Multinuclear acetylide complexes containing two or three Pd−Pt μ-ethynediyl units were prepared as multifunctional initiators for the living polymerization of aryl isocyanides. The polymerization smoothly proceeded to give two- or three-armed polymers with narrow polydispersity indexes in quantitative yields. Trace experiments using gel permeation chromatography and 31P NMR spectroscopy as well as kinetics revealed that all the Pd−Pt μ-ethynediyl units acted as initiators for the living polymerization. The polyisocyanide chains with narrow polydispersity indexes were cleaved off from the multiarmed polymers. The reaction of chiral monomer produced polymers having two and three helical chiral arms. Kinetic study of the polymerization of the chiral monomer and comparison of the chiroptical properties of resulting polymers with those of polymers prepared with Pd−Pt μ-ethynediyl complex suggested that the helical chiral polyisocyanide arms did not exhibit intramolecular interaction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
