Visualization of Ultrasensitive and Recyclable Dual-Channel Fluorescence Sensors for Chemical Warfare Agents Based on the State Dehybridization of Hybrid Locally Excited and Charge Transfer Materials
| Autor: | Changjiang Zhou, Yining Lv, Siyu Chang, Bing Yang, Xiaobai Li, Shitong Zhang, Wanqi Mo, Huaqian Liu, Hongwei Ma |
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| Rok vydání: | 2019 |
| Předmět: |
Chemical Warfare Agents
Chemistry 010401 analytical chemistry Static Electricity Charge (physics) Nanotechnology DUAL (cognitive architecture) 010402 general chemistry 01 natural sciences Fluorescence Sarin 0104 chemical sciences Analytical Chemistry Visualization Organophosphorus Compounds Spectrometry Fluorescence Limit of Detection Excited state Equipment Reuse Humans State (computer science) Communication channel Fluorescent Dyes Reagent Strips |
| Zdroj: | Analytical chemistry. 91(17) |
| ISSN: | 1520-6882 |
| Popis: | Simple and fast detection of chemical warfare agents vapor is necessary and urgent to fight against uncertain terrorist attacks and wars. In this contribution, inspired by the design of the hybrid locally excited and charge transfer (HLCT) excited state, two fast and highly sensitive visualization and fluorescence probes for DCP detection with relative small interstate coupling (J) TPA-2AC and TPA-9AC are reported. Upon exposure to saturated DCP vapor, the TPA-9AC test strips exhibited a rapid fluorescent response in no more than 1 s, accompanied by a change of the color from green to red. The detection limit of the test strips can be estimated as sensitive as 0.15 ppb, which is far superior to the "harmless" level (7 ppb) of human response to acute sarin exposure. More impressively, the fluorescent intensity of the test strips can be quickly restored when exposed to ammonia vapor for cyclic utilization, demonstrating an application prospect in the real-time detection of chemical warfare agents. |
| Databáze: | OpenAIRE |
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