Silsesquioxane cages as fluoride sensors
| Autor: | Vuthichai Ervithayasuporn, Nicha Prigyai, Supphachok Chanmungkalakul, Suda Kiatkamjornwong, Manlika Masik, Sasikarn Hanprasit |
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| Rok vydání: | 2017 |
| Předmět: |
02 engineering and technology
Fluorine-19 NMR 010402 general chemistry Photochemistry 01 natural sciences Catalysis symbols.namesake chemistry.chemical_compound Stokes shift Materials Chemistry Detection limit Chemistry Metals and Alloys General Chemistry 021001 nanoscience & nanotechnology Fluorescence Silsesquioxane 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ceramics and Composites symbols Pyrene Naked eye 0210 nano-technology Fluoride |
| Zdroj: | Chemical Communications. 53:12108-12111 |
| ISSN: | 1364-548X 1359-7345 |
| DOI: | 10.1039/c7cc06647c |
| Popis: | Pyrene functionalized silsesquioxane cages (PySQ) not only provide significant fluorescence from pyrene-pyrene excimers with a very large Stokes shift (Δλ = 143 nm, 69 930 cm-1) in DMSO but also exhibit fluoride capture results coincidentally with a π-π* fluorescence enhancement. On the other hand, PySQ-F- in THF significantly exhibits π-π* fluorescence quenching and a color change can be observed with the naked eye from light yellow to deep orange by forming a charge-transfer (CT) complex among the pyrenyl rings. Moreover, PySQ selectively captures F- with a response time of |
| Databáze: | OpenAIRE |
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