Scholarlink

<p>Ethylene (C<sub>2</sub>H<sub>4</sub>) functions both as a key phytohormone regulating plant growth and development and as an essential feedstock in organic chemical synthesis. Reliable detection of C<sub>2</sub>H<sub>4</sub> is critical for monitoring emissions during crop cultivation and ensuring safety in industrial transportation. However, most existing C<sub>2</sub>H<sub>4</sub> sensors rely on noble-metal catalysts and/or high-operating temperature, which significantly constrain their practical applications. Moreover, achieving high specificity in C<sub>2</sub>H<sub>4</sub> recognition remains a major challenge. Inspired by the signal transduction mechanism of plant C<sub>2</sub>H<sub>4</sub> receptor, this study propose a biomimetic sensing strategy based on a facilely synthesized cuprous-cystine complex (Cu<sub>2</sub>Cyt), which features a sulfur-bridged Cu<sup>+</sup> coordination center that mimics the biological binding site for C<sub>2</sub>H<sub>4</sub> recognition. The noble-metal-free wearable sensor was fabricated by depositing a Cu<sub>2</sub>Cyt/MXene composite onto a flexible interdigital electrode, enabling room-temperature detection of C<sub>2</sub>H<sub>4</sub> emitted from fruits or leaked from transport pipelines of chemical industries. It exhibits a detection range (0.05–5 ppm), an ultra-low detection limit of 1.07 ppb, fast response/recovery (51/92 s), high sensitivity of 3.64%·ppm<sup>-1</sup> in trace concentration range of 0–0.5 ppm, and good reversibility and reproducibility. Overall, this work offers a bioinspired design strategy for low-cost, high-performance, noble-metal-free, and wearable sensors, capable of trace-level C<sub>2</sub>H<sub>4</sub> 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 plant-receptor-inspired cuprous complex for wearable trace-level ethylene gas sensing

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月8日

查看全文
  • Lulu Xu,
  • Bohai Zhang,
  • Bin Tang,
  • Han Xu,
  • Hao Zhang,
  • Zhiqi Zhao,
  • Yijun Liu,
  • Xingyu Chen,
  • Lanlan Li,
  • Jiandong Hu,
  • Zhen Zhou,
  • Junfeng Wu

摘要

Ethylene (C2H4) functions both as a key phytohormone regulating plant growth and development and as an essential feedstock in organic chemical synthesis. Reliable detection of C2H4 is critical for monitoring emissions during crop cultivation and ensuring safety in industrial transportation. However, most existing C2H4 sensors rely on noble-metal catalysts and/or high-operating temperature, which significantly constrain their practical applications. Moreover, achieving high specificity in C2H4 recognition remains a major challenge. Inspired by the signal transduction mechanism of plant C2H4 receptor, this study propose a biomimetic sensing strategy based on a facilely synthesized cuprous-cystine complex (Cu2Cyt), which features a sulfur-bridged Cu+ coordination center that mimics the biological binding site for C2H4 recognition. The noble-metal-free wearable sensor was fabricated by depositing a Cu2Cyt/MXene composite onto a flexible interdigital electrode, enabling room-temperature detection of C2H4 emitted from fruits or leaked from transport pipelines of chemical industries. It exhibits a detection range (0.05–5 ppm), an ultra-low detection limit of 1.07 ppb, fast response/recovery (51/92 s), high sensitivity of 3.64%·ppm-1 in trace concentration range of 0–0.5 ppm, and good reversibility and reproducibility. Overall, this work offers a bioinspired design strategy for low-cost, high-performance, noble-metal-free, and wearable sensors, capable of trace-level C2H4 monitoring.