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<p>In this study, dynamic selenonium salts were incorporated into a polyurethane (PU) matrix to develop transparent, healable and antibacterial coatings. Through systematic formulation optimization, optically clear materials with excellent room-temperature hardness were obtained. Fine-tuning the selenonium content established a synergy between antibacterial performance and network dynamics, as evidenced by vitrimer-like rheological behavior at elevated temperatures. Consequently, the coatings exhibited outstanding reprocessability while maintaining high transparency and structural stability after prolonged saltwater exposure. These integrated features underscore the potential of the developed cationic PU coatings as robust, multifunctional materials for electronic device protection and marine antifouling, combining long-term transparency, recyclability, and antibacterial durability.</p>

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Transparent Polyurethane Coating with Selenonium Salt-Enhanced Healing and Antibacterial Properties

  • 期刊论文

  • 发表日期：

    2025年10月11日

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  • Si-Si Chen,
  • Vincent Scholiers,
  • Hong Chen,
  • Xiao-Wei An,
  • Jia-Jia Li,
  • Jian Zhu,
  • Filip E. Du Prez,
  • Xiang-Qiang Pan

摘要

In this study, dynamic selenonium salts were incorporated into a polyurethane (PU) matrix to develop transparent, healable and antibacterial coatings. Through systematic formulation optimization, optically clear materials with excellent room-temperature hardness were obtained. Fine-tuning the selenonium content established a synergy between antibacterial performance and network dynamics, as evidenced by vitrimer-like rheological behavior at elevated temperatures. Consequently, the coatings exhibited outstanding reprocessability while maintaining high transparency and structural stability after prolonged saltwater exposure. These integrated features underscore the potential of the developed cationic PU coatings as robust, multifunctional materials for electronic device protection and marine antifouling, combining long-term transparency, recyclability, and antibacterial durability.