A novel zinc(II) macrocycle-based synthesis of pure ZnO nanoparticles

Abstract

Dinuclear zinc(II) complex of the 18-membered tetraiminediphenol macrocycle has been synthesized by Schiff base condensation of 2,6-diformyl-4-methylphenol and 1,2-diaminobenzene in the presence of zinc(II) template. The obtained complex has been characterized by the spectroscopic techniques and mass spectrometry. The complex exhibits high thermal stability and forms ZnO nanoparticles on thermal decomposition. The diffraction peaks in the X-Ray diffraction spectra indicated that the complexes are crystalline. The surface morphology has been investigated by scanning electron microscopy. Energy dispersive X-ray analysis shows the chemical purity and stoichiometry of the ZnO nanoparticles. The BET surface area of ZnO nanoparticles has been found. The transmission electron microscopy result shows spherical shaped ZnO nanoparticles with the size of 20 nm. Quantum confinement effects are clearly revealed in UV-Vis spectroscopy technique.

The Bis(4-methoxy-2-hydroxybenzophenone) copper(II) Complex Used as a New Precursor for Preparation of CuO Nanoparticles

“…In recent years, many articles have been report on the use of complexes for preparing metal oxide nanoparticles by thermal decomposition methods [8][9][10][11][12][13]. The temperature used in most papers is about 500 °C [8][9][10][11][12] i.e., Yazdan Parest and Morseli [8] prepared zinc oxide nanoparticles at 400 °C for 4 hours from the zinc(II) coordination polymer [Zn3(tza)3(H2O)3]n. Using this method, they prepared a spherical zinc(II) oxide nanoparticle with an average particle size of about 40 nm. Hosny and Dahshan [9] prepared spherical nanoparticles of manganese oxide (Mn3O4) from the thermal decomposition of manganese complexes at 500 °C.…”

Isolation and Characterization of Different Homometallic and Heterobimetallic Complexes of Nickel and Zinc Ions by Controlling Molar Ratios and Solvents

“…Therefore, Schiff‐base complexes of zinc have not only found potential applications as fluorescent probes, and antimicrobial agents, but also as precursors for zinc oxide based inorganic materials . Interestingly, multinuclear Zn II –Schiff base complexes containing Zn–O–Zn bridging have been used as precursors for the synthesis of ZnO nanoparticles . The observations reveal that several Zn II –Schiff‐base complexes are weak or non‐emitter in the solution state, however, they emit efficiently in the solid state.…”

“…[19] Interestingly, multinuclear Zn II -Schiff base complexes containing Zn-O-Zn bridging have been used as precursors for the synthesis of ZnO nanoparticles. [20] The observations reveal that several Zn II -Schiff-base complexes are weak or non-emitter in the solution state, however, they emit efficiently in the solid state. The enhancement in the luminescence properties in solid state is due to formation of aggregates as a result of several associative intermolecular chemical interactions among molecules such as π-π stacking.…”

Mn2O3 Nanoparticles Synthesized from Thermal Decomposition of Manganese(II) Schiff Base Complexes

“…Recently, transition metal oxide nanostructures such as CuO [1,2], Co 3 O 4 [3,4], NiO [5], ZnO [6] and Cr 2 O 3 [7] have been actively studied by many groups due to various properties and applications [1][2][3][4][5][6][7]. Among the transition metals, manganese exhibits several oxidation state and forms different oxides such as MnO [8,9], Mn 2 O 3 [10,11], Mn 3 O 4 [8][9][10][11], and MnO 2 [8].…”