1. Photo-stable chlorophylls conjugated with montmorillonite
- Author
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Yuji Inada, Hitoshi Kageyama, Hiroko Sekine, and Yoh Kodera
- Subjects
Chlorophyll a ,Inorganic chemistry ,Bioengineering ,General Medicine ,Conjugated system ,Photochemistry ,Applied Microbiology and Biotechnology ,chemistry.chemical_compound ,Montmorillonite ,Adsorption ,chemistry ,Monolayer ,Bentonite ,Absorption (chemistry) ,Benzene ,Biotechnology - Abstract
Chlorophyll a was adsorbed to freeze-dried montmorillonite, bentonite, in benzene to form chlorophyll-bentonite conjugate. The adsorption proceeds into two steps; monolayer and multilayer adsorption. The absorption maximum in red region of chlorophyll a shifts to longer wavelength from 660 nm to 678 nm by increasing the amount of chlorophyll a conjugated with bentonite. Chlorophylls in the conjugated state was found to be photo-stable, although chlorophylls free from bentonite took place the marked bleaching by light-illumination.
- Published
- 1992
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