Scholarlink

<p>The development of efficient and portable sensors for iodate detection is of significant importance. Herein, a novel oligomer (DAPF) incorporating triphenylamine and 4,5-diazafluorene units was synthesized and developed as a selective fluorescent probe for iodate (IO<sub>3</sub><sup>−</sup>) under strongly acidic conditions (pH = 1). The optical properties of DAPF were thoroughly investigated, revealing a large Stokes shift and a distinct “turn-on” fluorescence response upon acidification. The probe exhibited excellent selectivity and sensitivity towards IO<sub>3</sub><sup>−</sup> over other common anions, with a low detection limit of 3 × 10<sup>− 8</sup> M. The quenching mechanism was elucidated to involve the deprotonation of the protonated DAPF by IO<sub>3</sub><sup>−</sup> driven by their difference in pKa, as supported by spectroscopic studies and theoretical calculations. Moreover, a portable polyvinyl alcohol hydrogel sensor embedded with DAPF was fabricated, enabling visual and real-time detection of IO<sub>3</sub><sup>−</sup> under UV light. This work presents a promising probe for IO<sub>3</sub><sup>−</sup> detection and offers a feasible strategy for designing practical sensing platforms for on-site environmental monitoring.</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

A Portable Smartphone-assisted Sensor for Detection of Iodate Based on Triphenylamine Oligomer

  • 期刊论文

  • 发表日期：

    2026年6月2日

查看全文
  • Yue Zhang,
  • Mingyi Guan,
  • Hui Li,
  • Xiaoyu Zeng,
  • Lu Yang,
  • Xiaofang Ding,
  • Xiaoping Fan,
  • Daoxing Chen,
  • Mengtuan Ge

摘要

The development of efficient and portable sensors for iodate detection is of significant importance. Herein, a novel oligomer (DAPF) incorporating triphenylamine and 4,5-diazafluorene units was synthesized and developed as a selective fluorescent probe for iodate (IO3−) under strongly acidic conditions (pH = 1). The optical properties of DAPF were thoroughly investigated, revealing a large Stokes shift and a distinct “turn-on” fluorescence response upon acidification. The probe exhibited excellent selectivity and sensitivity towards IO3− over other common anions, with a low detection limit of 3 × 10− 8 M. The quenching mechanism was elucidated to involve the deprotonation of the protonated DAPF by IO3− driven by their difference in pKa, as supported by spectroscopic studies and theoretical calculations. Moreover, a portable polyvinyl alcohol hydrogel sensor embedded with DAPF was fabricated, enabling visual and real-time detection of IO3− under UV light. This work presents a promising probe for IO3− detection and offers a feasible strategy for designing practical sensing platforms for on-site environmental monitoring.