Chlorophyll Fluorescence

Chlorophyll + hν (blue/red) → Chlorophyll* → Chlorophyll + hν (red)

Visão geral

Chlorophyll absorbs blue (430 nm) and red (660 nm) light, reaching an excited singlet state. Most energy is transferred to the photosynthetic reaction center, but a small fraction (1–2%) is re-emitted as red fluorescence (680–740 nm). This fluorescence is a direct indicator of photosynthetic efficiency.

Exemplo do cotidiano

If you shine a UV light on a spinach extract, it glows red due to chlorophyll fluorescence — a common chemistry demonstration.

Importância industrial

A medição da fluorescência da clorofila (fluorometria PAM) é utilizada na agricultura, silvicultura e ecologia para avaliar a saúde e o stress das plantas.

Propriedades

Tipo: Photochemical
Reversível: Sim
Energia: Exotérmico

Reações relacionadas

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Frequently Asked Questions

What is the equation for Chlorophyll Fluorescence?

The balanced equation is: Chlorophyll + hν (blue/red) → Chlorophyll* → Chlorophyll + hν (red).

What type of reaction is Chlorophyll Fluorescence?

Chlorophyll Fluorescence is a photochemical reaction. It is reversible under certain conditions.

Is Chlorophyll Fluorescence exothermic or endothermic?

Chlorophyll Fluorescence is exothermic (releases energy).