Ring-opening metathesis polymerization for synthesizing molecular bottlebrushes via the grafting-through strategy

Molecular bottlebrush (MBB) has been considered as an important type of unimolecular nanomaterial for widespread applications ranging from energy to biomedicine, due to its typical one-dimensional molecular conformation with tunable aspect ratio and chemical composition. In the recently decades, the ring-opening metathesis polymerization (ROMP) combined with the grafting-through strategy has emerged as a powerful tool for synthesizing MBBs with various architecture, including (multi)block MBBs, core-shell MBBs, random MBBs and Janus MBBs et al. In this review, the recent advances on the synthesis of MBBs including the rational preparation of NB terminated macromonomers (MMs) and the grafting-through ROMP are briefly summarized. Moreover, the emerging progress on the grafting-through ROMP performed in the aqueous media is also highlighted. image