The self-assembly process of the gelator 1b in mixed solvent of DMSO/H2O (10/1, v/v) are studied.
The gel 1b had the ability of distinguishing of o-phenylenediamine, m-phenylenediamine and p-phenylenediamine.
The gelator 1b could selectively and sensitively detect p-phenylenediamine with the detection limit of 8.961 × 10− 8 mol L− 1.