Luminophore

Luminophore

A luminophore is an atom or atomic grouping in a chemical compound that manifests luminescence. There exist organic and inorganic luminophores. It should be stressed that the correct, textbook terminology is "luminophore", not "lumophore", although the latter term has been frequently but erroneously used in the chemical literature.

Luminophores can be divided into two subcategories: fluorophores and phosphors. The difference between luminophores belonging to these two subcategories is derived from the nature of the excited state responsible for the emission of photons. Some luminophores, however, cannot be classified as being exclusively fluorophores or phosphors and exist in the gray area in between. Such cases include transition metal complexes (such as ruthenium tris-2,2'-bipyridine) whose luminescence comes from an excited (nominally triplet) metal-to-ligand charge transfer (MLCT) state, but which is not a true triplet-state in the strict sense of the definition.

Most luminophores consist of conjugated pi systems or transition metal complexes. There exist purely inorganic luminophores, such as zinc sulfide doped with rare earth metal ions, rare earth metal oxysulfides doped with other rare earth metal ions, yttrium oxide doped with rare earth metal ions, zinc orthosilicate doped with manganese ions, etc. Luminophores can be observed in action in fluorescent lights, TV screens, computer monitor screens, organic light-emitting diodes and bioluminescence.


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См. также в других словарях:

  • luminophore — [ lyminɔfɔr ] n. m. • 1907; du lat. lumen, inis « lumière » et de phore ♦ Techn. Substance luminescente constituant la couche sensible de l écran des systèmes d examen aux rayons X et de divers tubes cathodiques. ● luminophore nom masculin… …   Encyclopédie Universelle

  • Luminophore —   [zu lateinisch lumen »Licht« und griechisch phoreĩn »tragen«], Singular Luminophor der, s, Stoffe, die Lumineszenz zeigen. Natürliche Luminophore sind einige Minerale, bei denen durch geringe Gehalte an Seltenerdmetallen Fluoreszenz auftritt, u …   Universal-Lexikon

  • Luminophore — Luminophores d un tube cathodique de téléviseur Le luminophore est une substance qui, lorsqu elle subit une excitation, émet de la lumière. Utilisée notamment dans les tubes cathodiques des écrans et les écrans SED. Un luminophore est aussi… …   Wikipédia en Français

  • luminophore — švytalas statusas T sritis Standartizacija ir metrologija apibrėžtis Medžiaga, gebanti įgytą energiją paversti elektromagnetine spinduliuote. atitikmenys: angl. luminophor; luminophore; lumophor; lumophore vok. Leuchtstoff, m; Luminophor, m rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • luminophore — liuminoforas statusas T sritis chemija apibrėžtis Medžiaga, švytinti dėl išorinių veiksnių poveikio. atitikmenys: angl. luminescent material; luminophore; lumophore; phosphor rus. люминофор; фосфор ryšiai: sinonimas – fosforas …   Chemijos terminų aiškinamasis žodynas

  • luminophore — švytalas statusas T sritis fizika atitikmenys: angl. luminophor; lumophor vok. Leuchtstoff, m; Luminophor, m rus. люминофор, m pranc. luminophore, m; phosphore, m …   Fizikos terminų žodynas

  • luminophore — /looh meuh neuh fawr , fohr /, n. Physics, Chem. a molecule or group of molecules that emits light when illuminated. Also, luminophor. [1905 10; < L lumin (see LUMEN) + O + PHORE] * * * …   Universalium

  • luminophore — noun That part of a molecule that is responsible for a given emission band when it undergoes luminescence. Syn: lumiphore …   Wiktionary

  • luminophore — An atom or atomic grouping in an organic compound that increases its ability to emit light. [L. lumen, light, + G. phoros, bearing] …   Medical dictionary

  • luminophore — ● n. m. ►AFFICH Petit bidule émettant de la lumière. On en trouve par exemple des milliers à la surface d un seul écran d ordinateur …   Dictionnaire d'informatique francophone


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