Tapered (cone-shaped) bottlebrush polymers were synthesized for the first time by ring-opening metathesis polymerization (ROMP) using a sequential-addition of macromonomers (SAM) strategy. Polystyrene macromonomers with molecular weights that increased from 1 to 10 kg mol^–1 were polymerized in sequence to high conversion, yielding tapered bottlebrush polymers that could be visualized by atomic force microscopy (AFM).

中文翻译：

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锥形瓶刷聚合物：通过连续添加大分子单体的锥形纳米结构

锥形（锥形）瓶刷聚合物首次通过开环复分解聚合（ROMP）使用大单体的顺序添加（SAM）策略合成。分子量从 1 增加到 10 kg mol-1 的聚苯乙烯大分子单体^依次聚合以实现高转化率，从而产生可通过原子力显微镜 (AFM) 观察到的锥形瓶刷聚合物。