Abstract
Three new compounds bearing furyl, aryl, or thienyl moieties linked to an imidazo-crown ether system (1, 2, and 3) were synthesized and fully characterized by elemental analysis, infrared, UV-vis absorption, and emission spectroscopy, X-ray crystal diffraction, and MALDI-TOF-MS spectrometry. The interaction toward metal ions (Ca2+, Cu2+, Ni 2+, and Hg2+) and F- has been explored in solution by absorption and fluorescence spectroscopy. Mononuclear and binuclear metal complexes using Cu2+ or Hg2+ as metal centers have been synthesized and characterized. Compounds 2 and 3 show a noticeable enhancement of the fluorescence intensity in the presence of Ca2+ and Cu2+ ions. Moreover compound 3 presents a dual sensory detection way by modification of the fluorimetric and colorimetric properties in the presence of Cu2+ or Hg2+. EPR studies in frozen solution and in microcrystalline state of the dinuclear Cu(II)3 complex revealed the presence of an unique Cu2+ type.
Original language | English |
---|---|
Pages (from-to) | 10847-10857 |
Number of pages | 11 |
Journal | Inorganic Chemistry |
Volume | 49 |
Issue number | 23 |
DOIs | |
Publication status | Published - 6 Dec 2010 |
Keywords
- calcium
- chelating agent
- copper
- crown compound
- fluorescent dye
- imidazole derivative
- metal
- nickel
- article
- chemical structure
- chemistry
- electron spin resonance
- mass spectrometry
- spectrofluorometry
- spectrophotometry
- synthesis
- X ray crystallography
- Calcium
- Chelating Agents
- Copper
- Crown Compounds
- Crystallography, X-Ray
- Electron Spin Resonance Spectroscopy
- Fluorescent Dyes
- Imidazoles
- Metals
- Models, Molecular
- Nickel
- Spectrometry, Fluorescence
- Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
- Spectrophotometry