Spectroscopic studies on the protonation
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R. De Bicca Alencastro; S. Badilescu; L. S. Lussier; C. Sandorfy; H. Le Thanh; D
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Article
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1990
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John Wiley and Sons
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English
β 469 KB
## Abstract This short review concerns the protonation of Schiff bases by halogenic or carboxylic acids with a bias toward the chromophore of visual and bacterial rhodopsins. It is pointed out that the weak acids available in these pigments could not protonate the retinyl Schiff base 100% and that