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KMID : 1059519870310040295
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Journal of the Korean Chemical Society
1987 Volume.31 No. 4 p.295 ~ p.300
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Structural Studies upon the Interactive Effects between Organic Dyestuffs and Polyelectrolytes (Ⅱ). The Interaction of Methylene Blue and Acridine Orange with Chondroitin Sulfate
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Park Chong-Hoe
Park Moo-Soon
Lee Hong
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Abstract
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Spectroscopic studies have been carried out on the metachromatic behavior of methylene blue(MB) and acridine orange(AO) in the presence of chondroitin sulfate A(CSA) and chondroitin sulfate C(CSC). The characteristic changes of the meta-band with the changes of P/D value are discussed in terms of the stacking theory. Quantitative studies on the stacking effect are made to calculate the number of bound molecules of dye per unit molecule of the polyanion. The result shows that MB has stronger stacking effect than AO. A stacking model and the dimension of the bound dyes on the surface of the polyanion are proposed, on the basis of the dimer model of planar aromatic dyes and the most stable conformation of the CSA chain. The model is found to be reasonable in accordance with the experimental results.
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KEYWORD
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