期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 2, 页码 302-305出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200600812
关键词
rare earth metals; luminescence; chelates; N,O ligands; sensing
Water-soluble, stable, and easily synthesizable 1:4 complexes of rare-earth ions with 8-hydroxy-5-nitroquinolinate ligands have been prepared. These complexes can be sensitized by visible light with wavelengths up to 480 nm and show near-infrared emission in aqueous solution. The incorporation of a nitro group in the quinoline moiety shifts its absorption bands to longer wavelengths and also increases its molar absorptivity by a factor of 2.5, thereby significantly enhancing its light-harvesting power. The presence of the nitro group also increases the solubility of the resulting complexes, making them water-soluble. (c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007.
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