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<p>Post-modification of polymers, despite its potential for developing commodity polymers, usually faces long-standing challenges such as poor selectivity, unavoidable side reactions, and limited functionalization degrees. Herein, we present an efficient site-selective approach for C–H arylation of polystyrene (<b>PS</b>) under mild conditions employing a dinuclear gold-complex as the catalyst. Notably, it is found that gold catalyst enables precise <i>para</i>-selective C–H arylation of <b>PS</b> when hexafluorobenzene (C<sub>6</sub>F<sub>6</sub>) is used as an additive, which suppresses the cross-linking side reactions through a noncovalent interaction strategy. A wide range of functional groups can be tolerated and efficiently incorporated into <b>PS</b> with highly functionalization degrees, enabling precise control over the bulk and surface properties of the resulting materials.</p>

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Precise post-modification of polystyrene with gold-catalyzed C(sp2)–H arylation

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Wencheng Yan,
  • Yi Nan,
  • Ming Wu,
  • Jun Huang,
  • Xiaoliang Wang,
  • Weipeng Li,
  • Qingyun Fang,
  • Duanyang Liu,
  • Sergey Konchenko,
  • Chengjian Zhu,
  • Jin Xie

摘要

Post-modification of polymers, despite its potential for developing commodity polymers, usually faces long-standing challenges such as poor selectivity, unavoidable side reactions, and limited functionalization degrees. Herein, we present an efficient site-selective approach for C–H arylation of polystyrene (PS) under mild conditions employing a dinuclear gold-complex as the catalyst. Notably, it is found that gold catalyst enables precise para-selective C–H arylation of PS when hexafluorobenzene (C6F6) is used as an additive, which suppresses the cross-linking side reactions through a noncovalent interaction strategy. A wide range of functional groups can be tolerated and efficiently incorporated into PS with highly functionalization degrees, enabling precise control over the bulk and surface properties of the resulting materials.