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