Scholarlink

<p>Valorizing marine biowaste, this study reports the design of a novel water-soluble fluorescent chitosan derivative for Al<sup>3+</sup> sensing. High-purity chitosan (97% DDA) extracted from shrimp shells was sequentially functionalized via a click chemistry and a Wittig reaction, introducing triazole and styrylanthracene fluorophore units to yield the Cs-Tri-An probe. A structural characterization (FT-IR, NMR) confirmed the successful synthesis and quantitative functionalization by Wittig reaction. Cs-Tri-An exhibits pronounced blue emission and organic semiconductor properties in aqueous solution. Its fluorescence sensing performance revealed a “turn-on” response toward Al<sup>3+</sup>, with a 31% enhancement. The probe forms a stable complex with Al<sup>3+</sup> (binding constant <i>K</i> = 6.9 × 10<sup>4</sup> M<sup>−1</sup>) and achieves a nanomolar detection limit (LOD = 49.11&#xa0;nM). These results demonstrate the successful modification of chitosan into a high-performance sensing material.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Water-soluble chitosan-based fluorescent probe for Al3+ detection: synthesis and sensing performance

  • 期刊论文

  • 发表日期：

    2026年5月12日

查看全文
  • Habiba Zrida,
  • Khaoula Hassine,
  • Mariam Essid,
  • Khaled Hriz

摘要

Valorizing marine biowaste, this study reports the design of a novel water-soluble fluorescent chitosan derivative for Al3+ sensing. High-purity chitosan (97% DDA) extracted from shrimp shells was sequentially functionalized via a click chemistry and a Wittig reaction, introducing triazole and styrylanthracene fluorophore units to yield the Cs-Tri-An probe. A structural characterization (FT-IR, NMR) confirmed the successful synthesis and quantitative functionalization by Wittig reaction. Cs-Tri-An exhibits pronounced blue emission and organic semiconductor properties in aqueous solution. Its fluorescence sensing performance revealed a “turn-on” response toward Al3+, with a 31% enhancement. The probe forms a stable complex with Al3+ (binding constant K = 6.9 × 104 M−1) and achieves a nanomolar detection limit (LOD = 49.11 nM). These results demonstrate the successful modification of chitosan into a high-performance sensing material.