Порівняння методів
Переглядайте обрані методи поруч; рядки з відмінностями підсвічено.
| КОСІ× | ATR-FTIR× | |
|---|---|---|
| Галузь | Спектроскопія | Спектроскопія |
| Родина | Process / pipeline | Process / pipeline |
| Рік появи≠ | 1976 | 1961 |
| Автор методу≠ | Wüthrich Kurt | Joop Fahrenfort |
| Тип≠ | Two-dimensional pulse sequence | Vibrational spectroscopy technique |
| Основоположне джерело≠ | 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 ↗ | Harrick, N. J. (1960). Study of physics of internal reflection from metals. Journal of Physics and Chemistry of Solids, 13(2), 143-155. link ↗ |
| Інші назви | COSY NMR, 2D COSY, 1H-1H COSY | ATR-IR, attenuated total reflectance, FTIR spectroscopy |
| Пов'язані≠ | 4 | 3 |
| Підсумок≠ | 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. | Attenuated Total Reflectance (ATR) Fourier Transform Infrared (FTIR) spectroscopy is a variant of conventional FTIR that measures infrared absorption through evanescent-wave interrogation of samples in direct contact with a high-refractive-index crystal. Developed by Harrick and Fahrenfort in the 1960s, ATR-FTIR is now the dominant form of FTIR spectroscopy, enabling rapid, non-destructive characterization of organic compounds, polymers, coatings, and biological materials without extensive sample preparation. |
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