Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (11): 2549-2557.doi: 10.3866/PKU.WHXB201207311

• THERMODYNAMICS, KINETICS, AND STRUCTURAL CHEMISTRY • Previous Articles     Next Articles

Syntheses, Structures and Photoelectron Property of a Series of Cu(II/I) Coordination Polymers

JIN Jing1, XU Xiao-Ting1, CONG Sheng-Mei1, LI Lei1, ZHANG Guang-Ning2, NIU Shu-Yun1   

  1. 1 School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, Liaoning Province, P. R. China;
    2 Institute of Chemistry for Functionalized Materials of Liaoning Normal University, Dalian 116029, Liaoning Province, P. R. China
  • Received:2012-05-21 Revised:2012-07-26 Published:2012-10-17
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20571037) and Innovative Team Foundation of Educa-tional Office of Liaoning Province, China (2007T092).

Abstract:

Three Cu(II/I) coordination polymers/supramolecules were obtained by means of hydrothermal synthesis: (1) [K2Cu2(ox)(btec)(MeOH)2]n, (2) {[Cu(pdc)(H2O)2]?H2O}n, and (3) [Cu(cyan)(phen)]?H2O (where H2ox is oxalic acid, H4btec is 1,2,4,5-benzenetetracarboxylic acid, MeOH is methanol, H2pdc is pyridine-2, 5-dicarboxylic acid, phen is 1,10-phenanthroline, and Hcyan is cyanuric acid). These compounds were characterized by single crystal X-ray diffraction, surface photovoltage spectroscopy (SPS), solid phase ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR) spectroscopy, and elemental analysis. Results indicated that (1) is a three-dimensional (3D) coordination polymer while (2) is a twodimensional (2D) coordination polymer connected into a 3D network through hydrogen bonding. For both (1) and (2), the center metal is a Cu(II) cation. Compound (3) is a Cu(I) mononuclear complex which forms a 2D supramolecule via hydrogen bonding and π-π interactions. The SPS data for these three complexes exhibited photovoltage responses in the range of approximately 300 to 800 nm, indicating that all three possess some capacity for photoelectric conversion. The effects of composition, structure, dimensionality, ligands, valence states, and coordination environment of the central metal ions on the SPS results were investigated and discussed, as was the interrelationship between SPS and UV-Vis spectra.

Key words: Cu (II/I) coordination polymer, Synthesis, Structure, Surface photovoltage spectrum, Photoelectron property

MSC2000: 

  • O641