The Self-Assembly of Lipophilic Guanosine Derivatives - Molecular Self-Assembly: Advances and Applications - page 108

ordinary G-rich oligonucleotides do in water. Cation-free ribbon-like
aggregates [24] (Fig. 4.13c) and continuous helix supramolecular
structures [22,23] (Fig. 4.13e,f ) analogously show liquid crystalline
properties. In the case of ribbon-like aggregates the lyomesophase
is characterized by an unusual two-dimensional square lattice (Fig.
4.13d).

Figure 4.13 Lyomesophases obtained from LGs in hydrocarbon solvents.

(a) Cholesteric and (b) hexagonal columnar lyomesophases
from stacked G-quartets in the presence of metal cations.
(c) Lyomesophase originated by ribbons in hexadecane and
(d) sketch of 2D-square packing of ribbons giving rise to
this mesophase. (e) Hexagonal and (f ) cholesteric columnar
phases from continuous helix supramolecular structures.