Figure 3.
Transported amounts of amines after 20 h of transport time, measuring the ammonium salt contents of the receiving phase using crown ether (R,R)-2 as a carrier: (a) transported rate of amines in percent (%); (b) transported quantity of amines as flux (mol/(s × m2) × 107). The notations (A–D) indicate the grouping according to structural features: (A) aliphatic amines, (B) aralkylamines with different numbers of N-alkyl substituents, (C) aralkylamines with different para-substituents, (D) aralkylamines with different aromatic ring systems