Turn-on selective fluorescent probe for trivalent cations
- Turn-on selective fluorescent probe for trivalent cations
- 정광덕; 김현; 김경범; 송은주; 황인홍; 노진영; 김판기; 김철
- Trivalent Cations; Pearson's principle; Fluorescence Probe; PET process
- Issue Date
- Inorganic chemistry communications
- VOL 36, 72-76
- A novel fluorescent sensor 1 (1 = 10-(2-(((pyridin-2-yl)methylamino)methyl)phenol)methyl-anthracene) for trivalent cations has been synthesized and characterized. Both UV-vis and fluorescence spectroscopic studies demonstrated that the new receptor 1 was highly sensitive and selective toward trivalent cations, while there was no response to monovalent and divalent cations in methanol. Upon binding with trivalent cations, the emission bands of 1 red-shifted for all the trivalent cations from 411 nm to 421 nm and their fluorescence intensities were enhanced. In particular, Fe3 + could be obviously discriminated from Fe2 +. The binding modes of 1 and the trivalent cations (M3 + ions) were found to be 1:1 and confirmed by Job plot, 1H NMR titration and ESI-mass spectrometry analysis.
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