Parallel polycrystalline bis(8-quinolinolato)zinc(II) complex nanorod arrays, with diameters ill the range of 250-320 nm and length of 25 mu m, are in situ fabricated by liquid-liquid interfacial precipitation in the pores of porous anodic aluminum oxide membrane. The prepared nanorods show an enhanced photoluminescence emission compared to submicron particles and call be used as a good melamine probe for easy and highly sensitive detection.