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<p>Aggregation-induced emission (AIE) polymers have been extensively studied; however, the integration of AIE units into polyelectrolytes remains largely limited by the laborious multistep synthesis of pre-designed emissive monomers. Herein, we report a one-pot multicomponent polymerization method that directly produces main-chain charged polyelectrolytes with intrinsic AIE characteristics from non-emissive building blocks. By optimizing the monomer structures and reaction conditions, a series of soluble high-molecular-weight polymers with well-defined backbones were obtained in high yields. The resulting polyelectrolytes displayed robust AIE behavior, exhibiting fluorescence enhancement up to about 60-fold in an aqueous environment, and maintained excellent thermal stability. Owing to their cationic backbones, these polymers interact strongly with microbial surfaces and exhibit remarkable antimicrobial activities. This study establishes a synthetically efficient route to AIE polyelectrolytes and highlights their potential applications as multifunctional materials for bioimaging, antimicrobial therapy, and other applications.</p>

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Multicomponent Polymerization of Alkynes, Amines, and Benzaldehyde toward Main-chain Charged Aggregation-induced Emission Polyelectrolytes

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Qiu-Shuo Zhang,
  • Bo Song,
  • An-Jun Qin,
  • Ben-Zhong Tang

摘要

Aggregation-induced emission (AIE) polymers have been extensively studied; however, the integration of AIE units into polyelectrolytes remains largely limited by the laborious multistep synthesis of pre-designed emissive monomers. Herein, we report a one-pot multicomponent polymerization method that directly produces main-chain charged polyelectrolytes with intrinsic AIE characteristics from non-emissive building blocks. By optimizing the monomer structures and reaction conditions, a series of soluble high-molecular-weight polymers with well-defined backbones were obtained in high yields. The resulting polyelectrolytes displayed robust AIE behavior, exhibiting fluorescence enhancement up to about 60-fold in an aqueous environment, and maintained excellent thermal stability. Owing to their cationic backbones, these polymers interact strongly with microbial surfaces and exhibit remarkable antimicrobial activities. This study establishes a synthetically efficient route to AIE polyelectrolytes and highlights their potential applications as multifunctional materials for bioimaging, antimicrobial therapy, and other applications.