lumiphore (luminophore) 

https://doi.org/10.1351/goldbook.L03649
A part of a molecular entity (or atom or group of atoms) in which electronic excitation associated with a given emission band is approximately localized. (Analogous to chromophore for absorption spectra).
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2253 [Terms] [Paper]
Citation: 'lumiphore' 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.L03649 RIS BibTex EndNote
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Last revised: February 24, 2014