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| COSY× | Spectrométrie de masse par transformée de Fourier à cyclotron ionique (FT-ICR)× | |
|---|---|---|
| Domaine | Spectroscopie | Spectroscopie |
| Famille | Process / pipeline | Process / pipeline |
| Année d'origine≠ | 1976 | 1974 |
| Auteur d'origine≠ | Wüthrich Kurt | Alan Marshall |
| Type≠ | Two-dimensional pulse sequence | Mass spectrometry technique |
| Source fondatrice≠ | Aue, W. P., Bartholdi, E., & Ernst, R. R. (1976). Two-dimensional spectroscopy. Application to nuclear magnetic resonance. The Journal of Chemical Physics, 64(5), 2229-2246. DOI ↗ | Comisarow, M. B., & Marshall, A. G. (1974). Fourier transform ion cyclotron resonance spectroscopy. Chemical Physics Letters, 25(2), 282-283. DOI ↗ |
| Alias | COSY NMR, 2D COSY, 1H-1H COSY | FT-ICR-MS, Fourier Transform ICR, ICR mass spectrometry |
| Apparentées | 4 | 4 |
| Résumé≠ | Correlation Spectroscopy (COSY) is a two-dimensional NMR technique that correlates proton chemical shifts through scalar coupling (J-coupling), revealing which protons are magnetically coupled and hence bonded through multiple bonds. Developed by Aue, Bartholdi, and Ernst in 1976, COSY became one of the most important tools in structural elucidation, enabling chemists to map out proton connectivity patterns and deduce molecular topology without isotopic labeling. | Fourier Transform Ion Cyclotron Resonance (FT-ICR) mass spectrometry is an advanced analytical technique that combines magnetic confinement of ions with Fourier transform data processing to achieve exceptional mass accuracy and resolution. Developed by Comisarow and Marshall in 1974, FT-ICR-MS enables the determination of exact masses and elemental compositions of complex molecules, making it invaluable for environmental chemistry, metabolomics, petroleum characterization, and structural elucidation of unknowns. |
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