Addition polymerization of functionalized norbornenes as a powerful tool for assembling molecular moieties of new polymers with versatile properties

This comprehensive review surveys recent research trends in the addition polymerization of functionalized norbornenes for the macromolecular design of high performance materials in terms of catalyst activity, monomer reactivity, modifications and potential applications of addition polynorbornenes bearing functional groups. The structure of addition polynorbornene backbones is responsible for their high thermal resistance and chemical stability. In order to impart desired properties to the polymers, various functional side groups can be incorporated into the monomer units by the Ti-, Ni-, or Pd-catalyzed polymerization of norbornenes, which are available via cycloaddition reactions or norbornadiene-2,5 modifications. Based on the use of different substituents in the norbornene monomer units and different polymer compositions, the addition polynorbornenes have been successfully developed for the preparation of pervaporation, gas-separation, and proton-conducting membranes, sensors, catalyst supports, and for applications as photoresist, electrooptical, and dielectric materials etc. (C) 2018 Elsevier B.V. All rights reserved.