High-Pressure Polymerization of Phenol toward Degree-4 Carbon Nanothread

作者：Xin Yang, Guangwei Che, Yajie Wang, Peijie Zhang, Xingyu Tang, Puyi Lang, Dexiang Gao, Xuan Wang, Yida Wang, Takanori Hattori, Jun Abe, Aijiao Guan, Junfeng Xiang, Qian Li, Xiaohuan Lin, Xiao Dong, Ho‐kwang Mao, Haiyan Zheng, Kuo Li · 发表于：Nano Letters · 年份：2025 · DOI：10.1021/acs.nanolett.4c04895 · 被引用次数：9 · 研究领域：Carbon Nanotubes in Composites、Diamond and Carbon-based Materials Research、Graphene research and applications

-carbon nanothreads (CNTh) have garnered significant interest due to their predicted high Young's modulus and thermal conductivity. While the incorporation of heteroatoms into the central ring has been shown to influence the formation of CNTh and yield chemically homogeneous products, the impact of pendant groups on the polymerization process remains underexplored. In this study, we investigate the pressure-induced polymerization of phenol, revealing two phase transitions occurring below 0.5 and 4 GPa. Above 20 GPa, phenol polymerizes into degree-4 CNThs featuring hydroxyl and carbonyl groups. Hydrogen transfer of hydroxyl groups was found to hinder the formation of degree-6 nanothreads. Our findings highlight the crucial role of the hydroxyl group in halting further intracolumn polymerization and offer valuable insights for future mechanism research and nanomaterial synthesis.