Scholarlink

<p>The poor water stability of metal halide perovskites poses a significant challenge to use them as a fluorescent probes in aqueous medium. To adress this problem&#xa0;α-cyclodextrin (α-CD) was employed as an encapsulating agent for the preparation of cesium lead bromide perovskite quantum dots (CsPbBr<sub>3</sub>@α-CD PQDs). To the best of our knowledge, this is the first report to demonstrate α-CD as a ligand to impart water stability of CsPbBr<sub>3</sub> PQDs while preserving their fluorescence properties. The as-prepared water-stable green fluorescent CsPbBr<sub>3</sub>@α-CD PQDs acted as a fluorescent probe for the detection of propiconazole (PCZ) fungicide via a fluorescence “turn-off” mechanism. The present study illustrates the strong affinity of CsPbBr<sub>3</sub>@α-CD PQDs toward PCZ, favoring to achieve a good linear range of 0.05–50&#xa0;μM with a limit of detection of 17.11&#xa0;nM. The proposed method demonstrated excellent accuracy, achieving recoveries of 99.40 − 99.76% with relative standard deviations (RSD) of 0.22 − 0.28% and of 99.05 − 99.64% with RSD of 0.16 − 0.34% for PCZ assay in spiked soil and cabbage samples, respectively.</p> Graphical Abstract <p></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-stable α-cyclodextrin encapsulated CsPbBr3 perovskite quantum dots for fluorescence detection of propiconazole

  • 期刊论文

  • 发表日期：

    2026年4月25日

查看全文
  • Ashish,
  • Mayurkumar Revabhai Patel,
  • Madhura Pradeep Deshpande,
  • Tae Jung Park,
  • Suresh Kumar Kailasa

摘要

The poor water stability of metal halide perovskites poses a significant challenge to use them as a fluorescent probes in aqueous medium. To adress this problem α-cyclodextrin (α-CD) was employed as an encapsulating agent for the preparation of cesium lead bromide perovskite quantum dots (CsPbBr3@α-CD PQDs). To the best of our knowledge, this is the first report to demonstrate α-CD as a ligand to impart water stability of CsPbBr3 PQDs while preserving their fluorescence properties. The as-prepared water-stable green fluorescent CsPbBr3@α-CD PQDs acted as a fluorescent probe for the detection of propiconazole (PCZ) fungicide via a fluorescence “turn-off” mechanism. The present study illustrates the strong affinity of CsPbBr3@α-CD PQDs toward PCZ, favoring to achieve a good linear range of 0.05–50 μM with a limit of detection of 17.11 nM. The proposed method demonstrated excellent accuracy, achieving recoveries of 99.40 − 99.76% with relative standard deviations (RSD) of 0.22 − 0.28% and of 99.05 − 99.64% with RSD of 0.16 − 0.34% for PCZ assay in spiked soil and cabbage samples, respectively.

Graphical Abstract