Chlorophyll b

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Chlorophyll b
Chlorophyll b structure.svg
CAS number 479-61-8 YesY
PubChem 25244471
ChemSpider 16739843 YesY
Molecular formula C55H70MgN4O6
Molar mass 907.47 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references
This is the Absorption Spectrum of both the chlorophyll a and the chlorophyll b pigments. The use of both together enhances the size of the absorption of light for producing energy.

Chlorophyll b is a form of chlorophyll. Chlorophyll b helps in photosynthesis by absorbing light energy. It is more soluble than chlorophyll a in polar solvents because of its carbonyl group. Its color is yellow, and it primarily absorbs blue light.[1]

In land plants, the light harvesting antennae around photosystem II contain the majority of chlorophyll b. Hence, in shade adapted chloroplasts, which have an increased ratio of Photosystem II to Photosystem I, there is a lower ratio of chlorophyll a to chlorophyll b (Kitajima and Hogan 2003). This is adaptive as increasing chlorophyll b increases the range of wavelengths absorbed by the shade chloroplasts.

Ball-and-stick model
Space-filling model