Title: zero–zero absorption or emission
Long Title: IUPAC Gold Book - zero–zero absorption or emission
DOI: 10.1351/goldbook.Z06744
Status: current

Definition
A purely electronic transition occurring between the lowest vibrational levels of two electronic states.

Source
- PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2284 (https://doi.org/10.1351/pac199668122223)

Other Outputs
- html: https://dev.goldbook.iupac.org/terms/view/Z06744/html
- json: https://dev.goldbook.iupac.org/terms/view/Z06744/json
- xml: https://dev.goldbook.iupac.org/terms/view/Z06744/xml

Citation: Citation: 'zero–zero absorption or emission' 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.Z06744
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Accessed: 2026-01-17T22:06:05+00:00