Xk. Jiang et al., SHAPE AND AGGREGATING TENDENCY - THE AGGREGATING BEHAVIOR OF 8 ESTERSOF 8-CARBON CARBOXYLIC-ACIDS, Journal of the American Chemical Society, 117(51), 1995, pp. 12679-12682
The aggregating tendencies of eight p-nitrophenyl esters of eight-carb
on carboxylic acids (1-8) and two O-octyl phosphonates (10, 11) have b
een evaluated by measuring their critical aggregate concentrations (CA
gC's). Results show that (1) branching reduces aggregating tendency an
d (2) flexibility of the hydrocarbon chain favors aggregation. The beh
avior of a ''spheroidal'' molecule 8 shows that shape is undoubtedly a
n important factor that affects the aggregating tendency. This conclus
ion is unmistakably confirmed by the CAgC of an ester of the seven-car
bon acid 9.