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To understand molecular structure for a complex of a dye molecule of DNA receptor, the depolarization ratios and band widths of the Raman spectra of proflavin in different DNA media were analyzed. According to these experimental analyses, it is possible that the proflavin molecule lies near the phosphate group, having a strong interaction with the phosphate group to restrict tumbling motion and inplane motion. Refinement of the bandshape, the improvement of the vibrational bandshape theory and modifications of the reorientational theory should allow a detailed picture of the intercalation of proflavin to DNA.
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Clarke et al. (1987) studied this question.
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