期刊
JOURNAL OF FLUORESCENCE
卷 18, 期 1, 页码 149-153出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10895-007-0253-6
关键词
3,3,7,7-tetra[N-ethyl-N-benzyl(acetamide)-2-oxymethyl]-5-oxanonane; silver; terbium; fluorescent probe
We have synthesized 3,3,7,7-tetra[N-ethyl-N-benzyl(acetamide)-2-oxymethyl]-5- oxanonane (EBAOO) and its terbium complex. The crystal structures of the complex were determined: [Tb(EBAOO)](2)[Tb(NO3)(5)](3)center dot H2O, Orthorhombic, a=40.722 (6) angstrom, b=18.418 (3) angstrom, c=20.496 (3) angstrom. In the structure, the rare earth ion satisfies nine coordination. The geometry of the nine-coordinate polyhedron is discussed in terms of the dihedral angle and the mean plane. The luminescence of the complex is noticeably enhanced upon complexation with Ag+, which is due to the suppression of photoinduced electron transfer (PET) process. Therefore, the terbium complex can be used as a selective fluorescent silver probe.
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