In situ hydrothermal synthesis of 2D zinc-tetrazolate framework and hydrothermal conversion of framework to ZnO nano and micro-structures

Article type: Research Article

Authors: Jahani, Khadijeh | Dehghanpour, Saeed | Lipkowski, Janusz

Affiliations: Department of Chemistry, Alzahra University, Tehran, Iran | School of Sciences, Cardinal Wyszynski University in Warsaw, Warsaw, Poland

Note: [] Corresponding author: Saeed Dehghanpour, Department of Chemistry, Alzahra University, P.O. Box 1993891176, Tehran, Iran. Tel./Fax: +982188041344; E-mail: [email protected]

Abstract: 5-(4-Chlorobenzyl)-1H-tetrazole ligand (HL) was synthesized by Sharpless method. Furthermore, a tetrazole based Zn(II) metal organic framework, [Zn(L)2]n (1), (L = 5-(4-Chlorobenzyl)tetrazolate), was synthesized by in situ reaction of 4-chlorobenzeneacetonitrile, NaN3 and ZnCl2 under hydrothermal conditions. Both compounds are structurally characterized by elemental analysis, IR, and single crystal X-ray diffraction. Compound 1 displays undulated 2D layers, sql/Shubnikov tetragonal plane net with (44.62) point symbol. Fluorescence measurements and thermogravimetric analysis of 1 were also performed. In addition, we describe here a complex precursor, hydrothermal route to prepare ZnO nano and micro structures. The effects of reaction temperature and pH on the growth process and morphology of ZnO nano and micro structures were investigated. Finally, a possible growth mechanism is proposed. The obtained samples have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX).

Keywords: Zn(II), tetrazole, metal organic framework, hydrothermal syntheses, ZnO nano and micro structures

DOI: 10.3233/MGC-140149

Journal: Main Group Chemistry, vol. 14, no. 1, pp. 13-26, 2015