Colorimeric and fluorescence ON-OFF probe for acetate anion based on thiourea derivative: theory and experiment
| Autor: | Nankai Xi, Xiufang Xu, Jinlian Zhang, Shuanbao Tian, Yun Liu, Yue Li, Dong liang, Xuefang Shang, Zhenya Yin |
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| Rok vydání: | 2012 |
| Předmět: |
Anions
Models Molecular Inorganic chemistry Thiourea Acetates Fluorescence Medicinal chemistry Atomic and Molecular Physics and Optics Spectral line Analytical Chemistry Ion chemistry.chemical_compound chemistry Atomic electron transition Moiety Colorimetry Spectrophotometry Ultraviolet Coloring Agents Instrumentation HOMO/LUMO Spectroscopy Fluorescent Dyes |
| Zdroj: | Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 103 |
| ISSN: | 1873-3557 |
| Popis: | Based on thiourea moiety, three colorimetric and fluorescent anion probes have been synthesized. Results indicated the probe 1 containing p-NO(2) group showed the strongest binding ability for AcO(-) among the anions tested (F(-), AcO(-), H(2)PO(4)(-), Cl(-), Br(-), I(-)), which was not influenced by the existence of other anions. The interaction of host-guest was accompanied with a dramatic color change from colorless to orange. However, the addition of various anions did not cause noticeable spectral response of the probes (2 and 3) containing o, m-NO(2) groups. Theoretical investigation demonstrated the electron transition of the highest LUMO aroused the red-shift phenomenon in UV-vis spectra of 1-anion. |
| Databáze: | OpenAIRE |
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