期刊
SYNTHETIC METALS
卷 160, 期 15-16, 页码 1780-1786出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2010.06.022
关键词
Europium; Emission; Fluoride; Polymer films
资金
- Start fund of South China Normal University [G21117]
- South China Normal University for undergraduate students
Lanthanide tris(2-thenoyltrifluoroacetonate) complex based on 2-(3,5-difluorophenyl)imidazo [4,5-f]-1,10-phenanthroline (1) with red luminescence acted as effective receptors for F- and AcO- anions. Spectroscopic studies of UV-vis, fluorescence and NMR present that the sensor exhibits striking emission changes to fluoride (green) and acetate anions (yellow-red to green) respectively due to hydrogen binding interactions. More importantly, transparent hybrid thick films composed by europium complex and poly-methyl methacrylate (PMMA) matrix were successfully prepared. All the films exhibit intense red emissions of europium ions and the optimized composing concentration of luminescent species is 0.5 mg/5 ml MMA. The derived film could give rise to luminescence change in fluoride anion containing DMSO solution. The micro-structure and size of the hybrid films were characterized by dynamic light scattering (DLS), the results reflect that granule size has the average diameter of 300 nm. (C) 2010 Elsevier B.V. All rights reserved.
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