Two-dimensional correlation spectroscopy

{
  "id": "MLC-T-CHM-012374",
  "term": "Two-dimensional correlation spectroscopy",
  "field": "Chemistry",
  "definition": "A spectroscopic approach in which a sample is perturbed externally, by changing time, temperature or concentration for example, while spectra are collected, and the set of spectra is then processed into a two-dimensional correlation spectrum. Its two axes are spectral variables such as wavenumbers, and the correlation pattern shows which bands change together or in sequence. It is applied in infrared, nuclear magnetic resonance and fluorescence spectroscopy.",
  "synonyms": [
    "2-D correlation spectroscopy"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "two-dimensional correlation spectrum",
    "correlation spectroscopy",
    "total correlation spectroscopy",
    "atomic fluorescence spectroscopy",
    "infrared spectroscopy",
    "nuclear magnetic resonance spectroscopy"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 677 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/two-dimensional-correlation-spectroscopy/"
}