Journal
CHEMICAL COMMUNICATIONS
Volume 53, Issue 27, Pages 3862-3865Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cc00676d
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Funding
- National Key Basic Research Program of China [2015CB251401]
- Zhejiang Provincial Natural Science Foundation of China [LZ17B060001]
- Fundamental Research Funds for the Central Universities
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A novel anion-functionalized fluorescent ionic liquid was designed and prepared, which was capable of capturing sulphur dioxide with high capacity and could also be used as a good colorimetric and fluorescent SO2 sensor. Compared to conventional fluorescent sensors, this fluorescent ionic liquid did not undergo aggregationcaused quenching or aggregation-induced emission, and the fluorescence was quenched when exposed to SO2, and the fluorescence would quench when exposed to SO2. The experimental absorption, spectroscopic investigation, and quantum chemical calculations indicated that the quenching of the fluorescence originated from SO2 physical absorption, not chemical absorption. Furthermore, this fluorescent ionic liquid exhibited high selectivity, good quantification, and excellent reversibility for SO2 detection, and showed potential for an excellent liquid sensor.
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