Abstract
Cu(salpn), [salpn = N,N′-bis(salicylidene)-1,3-propanediimine], nanorods, and microtubes were successfully fabricated by template free hydro/solvothermal approach. Elemental analysis and FT-IR spectra confirmed the composition of Cu(salpn) complex and characteristic bands of this compound exactly. XRD pattern was well matched with X-ray diffraction simulated data. The SEM and TEM images revealed the nanorod morphology in hydrothermal process. The effect of various solvents (methanol, ethanol, 2-propanol, acetonitrile, and tetrahydrofuran) on the morphology of the products indicated that the microtubes Cu(salpn) just prepared in ethanol. Based on the growth process with respect to the morphological structure, the possible formation mechanism of Cu(salpn) nanocomplex has been proposed as a sequential two-step growth mechanism, heterogeneous complex nucleation, and directional growth processes. The nanorods of Cu(salpn) complex is the result of the faster growth rate along direction. Probably, the dissolution–recrystallization process can proceed as favorable mechanism for microtube fabrication. Adjusting reaction times can selectively control the formation of microtubes and microrods.
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