Abstract
The rotational diffusion behavior of tetracene was used to probe the internal viscosity of sodium dodecyl sulfate micelles in the presence of several n-alcholols (C 3–C 8). Fluorescence anistropy of tetracene was measured using frequency-domain spectroscopy. Several solutions were studied which contained approximately the same number of alcohol molecules per micelle. The results indicate that, while the addition of alcohol allows tetracene to reorient faster within the micelle, the chain length of the alcohol has little effect on the reorientation behavior. These findings have important ramifications regarding the choice of a mobile phase modifier in micellar liquid chromatography.
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