Chlorophyll conceptual basis  [ENDORSED]

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Christian_Makar_2D
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Chlorophyll conceptual basis

Postby Christian_Makar_2D » Tue Nov 15, 2016 8:14 pm

I remember it being mentioned in class, but how exactly does the MO diagram demonstrate how the chlorophyll absorbs certain lights and reflects green light?

Chem_Mod
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Re: Chlorophyll conceptual basis  [ENDORSED]

Postby Chem_Mod » Wed Nov 16, 2016 10:12 pm

As I mentioned in class the Chlorophyll a and Chlorophyll b absorb blue and red wavelengths of light due to e- transitions between its molecular orbitals.

There are no e- transitions (molecular orbital energy gaps) that correspond to green light. Therefore green light is not absorbed, it is reflected. Hence plants look green as we see the reflected light.

See my additional comments at: https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=43&t=16514&p=42354&hilit=chlorophyll


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