Self-assembled multilayer films of poor water-soluble copper(II) complexes constructed from dipyrido[3,2-d:2',3'-f]quinoxaline (Dpq) ligand as well as their fluorescent properties
- Faculty of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121000 (China)
New multilayer films were prepared by alternating adsorption of poly(sodium 4-styrenesulfonate) (PSS) and a new complex of [Cu{sub 2}(Dpq){sub 2}(Ac){sub 2}(H{sub 2}O){sub 2}] (ClO{sub 4}){sub 2}.H{sub 2}O (1) (Dpq=dipyrido[3,2-d:2',3'-f]quinoxaline, Ac=acetate) or a related complex [Cu(Dpq){sub 2}(H{sub 2}O)] (ClO{sub 4}){sub 2}.H{sub 2}O (1a) by electrostatic layer-by-layer self-assembly technique, respectively. Compounds 1 and 1a have been synthesized and structurally characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction analyses. Single-crystal X-ray analyses show that complexes 1 and 1a possess a dinuclear and a mononuclear structure, respectively, which are further extended into layered frameworks by {pi}-{pi} stacking and hydrogen-bonding interactions. The multilayer films were characterized by UV-vis spectroscopy, fluorescence spectroscopy, small-angle X-ray reflectivity measurements, and atomic force microscopy (AFM) imaging. UV spectroscopy shows that the deposition process is regular and highly reproducible from layer to layer. AFM image indicates that the film surface is uniform and smooth. The fluorescent properties of the films were studied and the results showed that the forming condition of the films had great influence on their properties. - Graphical abstract: Poor water-soluble copper(II) complexes constructed from dipyrido[3,2-d:2',3'-f]quinoxaline ligand have been synthesized and structurally characterized by single-crystal X-ray diffraction analyses. The complexes were used to fabricate the highly ordered multilayer films by layer-by-layer (LBL) self-assembly methods. The fluorescent properties of the films were studied and the results showed that the forming condition of films have great influence on their properties.
- OSTI ID:
- 21049531
- Journal Information:
- Journal of Solid State Chemistry, Vol. 180, Issue 10; Other Information: DOI: 10.1016/j.jssc.2007.07.033; PII: S0022-4596(07)00353-2; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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