Term: matrix isolation
https://doi.org/10.1351/goldbook.M03760

Definition:
A term which refers to the isolation of a reactive or unstable species by dilution in an inert matrix (argon, nitrogen, etc.), usually condensed on a window or in an optical cell at low temperature, to preserve its structure for identification by spectroscopic or other means.

Related Terms:
1) unstable (http://doi.org/10.1351/goldbook.U06569).
2) inert (http://doi.org/10.1351/goldbook.I03026).

Source: PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2200 (https://doi.org/10.1351/pac199062112167)

Citation: 'matrix isolation' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.M03760

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