Fig. 5: Schematic representation of the effect of alkyl chain length on the kinetics of chirality transfer.
From: Real-time chirality transfer monitoring from statistically random to discrete homochiral nanotubes
ΔG‡r (2), ΔG‡r (3), and ΔG‡r (4) represent the rotation barrier of acidic pillar[5]arene 2, 3, and 4, respectively. The resulting assemblies III (or II) from 2, 3, 4 require almost the same energy to dissociate one acidic pillar[5]arene, since the energy is mainly used against the same five pairs of ionic interaction. The chiral inversions of 2, 3, 4 contribute a major part of the conversion energy barrier of their assembled assemblies.
