Abstract
Properties of the cholesteric solutions of poly(A)·poly(U) and poly(A)·2poly(U) were investigated by means of circular dichroism and diffraction of laser light. These liquid crystals show a negative form-CD as well as a positive induced-CD of acridine orange incorporated into solution, suggesting that the helical sense of the cholesteric structures is right-handed. In a static magnetic field the pitch of the cholesteric structures changes with the field strength and this change varies with the angle that the helical axis of the cholesteric texture makes with respect to the direction of magnetic field. The magnetic susceptibility of these polyribonucleotide complexes appears to be higher in a direction parallel to the polymer helices than in a direction perpendicular to the polymer helices.
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Iizuka, E. Properties of the Cholesteric Liquid Crystals of Polyribonucleotide Complexes. Polym J 10, 293–300 (1978). https://doi.org/10.1295/polymj.10.293
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DOI: https://doi.org/10.1295/polymj.10.293
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