Abstract
Chlorophyll a was adsorbed onto a synthetic smectite, hectorite, in benzene to form a chlorophyll-smectite conjugate. The adsorption proceeded in two steps, involving monolayer and then multilayer adsorption of chlorophyll a onto smectite. The chlorophyll-smectite conjugate became a transparent colloidal solution with a green color on the addition of water. The absorption maximum of chlorophyll a in the red region shifted to longer wavelength by increasing the amount of chlorophyll a adsorbed onto smectite, accompanied by an effective photostabilization.
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