Title: photoexcitation
Long Title: IUPAC Gold Book - photoexcitation
DOI: 10.1351/goldbook.P04613
Status: current

Definition
The production of an excited state by the absorption of ultraviolet, visible, or infrared radiation.

Related Terms
- excited state: https://goldbook.iupac.org//terms/view/E02257
- infrared: https://goldbook.iupac.org//terms/view/IT07399
- ultraviolet: https://goldbook.iupac.org//terms/view/UT07492
- visible: https://goldbook.iupac.org//terms/view/VT07496

Source
- PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2261 (https://doi.org/10.1351/pac199668122223)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/P04613/html
- json: https://goldbook.iupac.org/terms/view/P04613/json
- xml: https://goldbook.iupac.org/terms/view/P04613/xml

Citation: Citation: 'photoexcitation' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.P04613
License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-06-20T23:19:21+00:00