A Chromo-Fluorogenic Synthetic 鈥淐anary鈥?for CO Detection Based on a Pyrenylvinyl Ruthenium(II) Complex
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- 作者：Mar铆a E. Moragues ; Anita Toscani ; F茅lix Sancen贸n ; Ram贸n Mart谋虂nez-M谩帽ez ; Andrew J. P. White ; James D. E. T. Wilton-Ely
- 刊名：Journal of the American Chemical Society
- 出版年：2014
- 出版时间：August 27, 2014
- 年：2014
- 卷：136
- 期：34
- 页码：11930-11933
- 全文大小：262K
- ISSN：1520-5126
文摘
The chromo-fluorogenic detection of carbon monoxide in air has been achieved using a simple, inexpensive system based on ruthenium(II). This probe shows exceptional sensitivity and selectivity in its sensing behavior in the solid state. A color response visible to the naked eye is observed at 5 ppb of CO, and a remarkably clear color change occurs from orange to yellow at the onset of toxic CO concentrations (100 ppm) in air. Even greater sensitivity (1 ppb) can be achieved through a substantial increase in turn-on emission fluorescence in the presence of carbon monoxide, both in air and in solution. No response is observed with other gases including water vapor. Immobilization of the probe on a cellulose strip allows the system to be applied in its current form in a simple optoelectronic device to give a numerical reading and/or alarm.