A polydiacetylene (PDA)/upconversion nanocrystals (UCNs) sensor system has been developed for selective dual signaling of chemical warfare agents (CWAs) gases, such as G-series nerve agent simulant and blood agent. Rationally utilizing the orthogonal reaction mechanisms of the G-agent simulant and the blood agent (ClCN), oxime and benzaldehyde modified diacetylene monomers capable of rapid recognition of CWAs gases were synthesized. A PDA/UCNs embedded fiber patch having dual signaling capability was realized by interweaving the color change of PDAs and the anti-Stokes shift based optical properties of UCNs. PDA/UCNs nanocomposites fiber patches selectively display blue-to-red color and yellow to red luminescence change upon exposure to CWAs gases. These results present a provisional design principle of a rapid and selective PDA/UCNs-based CWAs gas detection system that can be used at night.

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聚二乙炔/上转换纳米晶体纳米复合材料对化学战剂的正交双重信号传递

已经开发了聚二乙炔（PDA）/上转换纳米晶体（UCNs）传感器系统，用于化学战剂（CWAs）气体（例如G系列神经毒剂模拟物和血液剂）的选择性双重信号传递。合理利用G剂模拟物和血液剂（ClCN）的正交反应机理，合成了能够快速识别CWAs气体的肟和苯甲醛改性的二乙炔单体。通过交织PDA的颜色变化和基于UCN的基于反斯托克斯位移的光学特性，实现了具有双重信号传输能力的PDA / UCNs嵌入式光纤补丁。PDA / UCNs纳米复合纤维贴片在暴露于CWAs气体后会选择性地显示蓝色到红色和黄色到红色的发光变化。