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Figure 2.8
(a) Stacking of 2 hexagonal conformers to generate tubes.
(b) Schematic representation of a hexagonal tube showing
its polar (consisting of amides) and lipophilic (consisting of
alkenes) faces and their propensity for binding to polar (or
hydrogen bonding) and lipophilic molecules, respectively.
Figure 2.9
(a)Twohexagonalfirstgenerationtubesstacksideby
sides by means of inter-stack hydrogen bonds oriented
perpendicularly to the macroscopic tube. Other hydrogen
bonds parallel to the macroscopic tube impart rigidity to
thetubes.(b)Sixfirstgenerationtubes(hydrogenatoms
removed for clarity) aggregate around a bundle of LC to
generate a second generation tube.
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