pH–value-controlled assembly of photoluminescent zinc coordination polymers in the mixed-ligand system

Publication date: 15 April 2017
Source:Journal of Molecular Structure, Volume 1134
Author(s): Kang Liu, Hanbin Hu, Jing Sun, Yiheng Zhang, Jishu Han, Lei Wang
Three novel coordination polymers, [Zn(sdi)2(NO3)(H2O)]·NO3 (1), [Zn(sdi)2(H2O)2]·2NO3 (2) and [Zn(sdi)0.5(H2C3O4)(H2O)] (3), (sdi = N,N′-sulfuryldiimidazole) have been synthesized and characterized by elemental analysis, IR spectroscopy, single crystal X-ray diffraction, powder X-ray diffraction and thermogravimetric analyses. These compounds have abundant structural chemistry ranging from zero-dimensional (0D) (1), one-dimensional (1D) (2), to three-dimensional (3D) (3) networks. Compound 1 displays a 0D structure which formed by [Zn(sdi)2]2 dimers. Compound 2 possesses 1D chain with closed loops. Notably, compound 3 exhibits a 3D (3,4)-connected net with a (6³)(6⁵·8) topology. Interestingly, compounds 1–3 were obtained under similar reaction conditions and the structural diversity of these coordination polymers illustrate the remarkable effect of pH on the self-assembling process. Moreover, the fluorescent properties of these compounds have been investigated.

Graphical abstract

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