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Supramolecular Chirality and Self-Assembly

Self-assembly, self-recognition and replication may involve chiral components, as discussed on several instances above. This leads to some more general considerations about the role of molecular chirality in supramolecular species. [Pg.190]

Chirality is expressed on both the molecular and the supramolecular levels. Like a molecule, a supermolecule may exist in enantiomeric or diastereomeric forms. Supramolecular chirality results both from the properties of the components and from the way in which they associate. [Pg.190]

On the other hand, the association of two enantiomeric components yields an achiral supermolecule of meso type this may occur through a symmetrical bridging molecule in order to take care of the identical interaction sites at symmetry-related positions, as shown in the three-component supermolecule 187a the corresponding diastereomeric DL pair may also be obtained (see 187b). Thus, achiral components can associate into a chiral supermolecule and chiral components can give an achiral supermolecule. [Pg.191]

Molecular chirality also affects the way in which self-assembly from chiral components occurs and the nature of the resulting supermolecular architecture. Three cases may be distinguished  [Pg.191]

Finally, one may note that catenated and knotted structures display topological chirality [8.280, 8.282c, 9.76, 9.178]. [Pg.192]


See other pages where Supramolecular Chirality and Self-Assembly is mentioned: [Pg.190]    [Pg.191]   


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