Facile synthesis and characterizations of copper-zinc-10,15,20-tetra(4-pyridyl) porphyrin (Cu-ZnTPyP) coordination polymer with hexagonal micro-lump and micro-prism morphologies

Zhiguang Zhang; Xinyong Li; Qidong Zhao; Jun Ke; Yong Shi; Pancras Ndokoye; Lianzhou Wang

doi:10.1016/j.jcis.2014.07.005

Facile synthesis and characterizations of copper-zinc-10,15,20-tetra(4-pyridyl) porphyrin (Cu-ZnTPyP) coordination polymer with hexagonal micro-lump and micro-prism morphologies

J Colloid Interface Sci. 2014 Oct 15:432:229-35. doi: 10.1016/j.jcis.2014.07.005. Epub 2014 Jul 11.

Authors

Zhiguang Zhang¹, Xinyong Li², Qidong Zhao³, Jun Ke³, Yong Shi³, Pancras Ndokoye³, Lianzhou Wang⁴

Affiliations

¹ Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China; School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning 116029, China.
² Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China; ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia. Electronic address: xyli@dlut.edu.cn.
³ Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China; State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
⁴ ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia.

PMID: 25086717
DOI: 10.1016/j.jcis.2014.07.005

Abstract

Cu-ZnTPyP coordination polymer with hexagonal micro-lump and micro-prism morphologies has been successfully synthesized through a facile surfactant assisted self-assembly method based on Cu(OAc)2⋅2H2O and Zinc-5,10,15,20-tetra(4-pyridyl) porphyrin (ZnTPyP) in DMF/H2O solvent. The morphologies of three-dimensional micro-prisms and micro-lumps obtained at different concentrations of cetyltrimethylammonium bromide (CTAB) were investigated by scanning electronic microscopy. The compositions of the micro-prisms were studied by energy-dispersive spectra and inductively coupled plasma-atomic emission. X-ray diffraction analysis revealed a circular hexametric cage structure cross-linked by the main Zn-N axial coordination of the pyridyl ligands inside the micro-scale coordination polymers. The UV-Vis diffuse reflection spectroscopy revealed the formation of J-type aggregates in the both microstructures. The formation mechanism of Cu-ZnTPyP coordination polymer structure was investigated by varying CTAB concentration. Their surface photovoltage spectra indicated that the novel hexagonal micro-prism morphology of the coordination polymer displayed enhanced photo response under visible light, which is beneficial for exploiting the practical application of Cu-ZnTPyP compound.

Keywords: Growth mechanism; Infinite coordination polymer; Light absorption property; Porphyrin; Surfactant.