. The guanosine derivatives d(Gp)1-5G, dissolved in water, give rise to cholesteric and hexagonal mesophases. The results of X-ray Diffraction, Optical Microscopy, Circular Dichroism and Small Angle Neutron Scattering measurements indicate that the building block of the liquid-crystalline phases is a chiral rod, composed of a stacked array of Hoogsteen-bonded guanosine tetramers. The concentration at which the cholesteric phase appears increases with the oligomerisation degree, a pattern that seems to be related to the change of the ratio of negative charge/guanine units along the series. © 1993 IUPAC
Oligodeoxyguanylates: A case of self–assembly leading to lyotropic liquid crystals / Garbesi, A.; Gottarelli, G.; Spada, G. P.; Mariani, P.. - In: PURE AND APPLIED CHEMISTRY. - ISSN 0033-4545. - STAMPA. - 65:4(1993), pp. 641-646. [10.1351/pac199365040641]
Oligodeoxyguanylates: A case of self–assembly leading to lyotropic liquid crystals
Mariani P.
1993-01-01
Abstract
. The guanosine derivatives d(Gp)1-5G, dissolved in water, give rise to cholesteric and hexagonal mesophases. The results of X-ray Diffraction, Optical Microscopy, Circular Dichroism and Small Angle Neutron Scattering measurements indicate that the building block of the liquid-crystalline phases is a chiral rod, composed of a stacked array of Hoogsteen-bonded guanosine tetramers. The concentration at which the cholesteric phase appears increases with the oligomerisation degree, a pattern that seems to be related to the change of the ratio of negative charge/guanine units along the series. © 1993 IUPACI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
