کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1441676 1509418 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and photoluminescence properties of novel lanthanide complexes based on pyrazolone Schiff bases
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Synthesis and photoluminescence properties of novel lanthanide complexes based on pyrazolone Schiff bases
چکیده انگلیسی

Synthesis and spectroscopic characterization of novel lanthanide complexes, based on tripodal ligands prepared by reaction of 3-aryl/heteroaryl-4-benzoyl-1-phenyl-5-pyrazolone (where aryl/heteroaryl = phenyl, 2-pirydyl or 2-thienyl) with tris(2-aminoethyl)amine (TREN) are reported. All of the new Schiff base-type ligands have relatively high located triplet energy levels in comparison with their simple β-diketonate analogues. All of them were used as “antennas” for the ligand-sensitized photoluminescence of Tb3+ ion and in two cases (aryl/heteroaryl = phenyl and 2-pirydyl) characteristic green photoluminescence was detected.

Novel terbium and gadolinum complexes, based on tripodal Schiff base-type pyrazolone ligands were obtained in high yield. In comparison with their simple 1,3-diketonate analogs, novel ligands have relatively high located triplet energy levels, which fit much more properly with the emissive energy levels of the Tb3+ cation.Figure optionsDownload as PowerPoint slideHighlights
► New tripodal ligands and their luminescent complexes were prepared.
► Increase of the triplet energy level while compared to the initial pyrazolone.
► Increased luminescence for two of 4-benzoyl-pyrazolone Tb(III) complexes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 162, Issues 13–14, August 2012, Pages 1285–1291
نویسندگان
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