کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1304004 1498975 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel europium and gadolinium complexes with methaneseleninate as ligand: Synthesis, characterization and spectroscopic study
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Novel europium and gadolinium complexes with methaneseleninate as ligand: Synthesis, characterization and spectroscopic study
چکیده انگلیسی

The methaneseleninate and 1,10-phenanthroline were used as ligands in the synthesis of new lanthanide complexes. The photostability, emission quantum yield (q) and quantum efficiency (η) of the 5D0 emitting level of the Eu3+ ion were determined. An energy level diagram was used to establish the most relevant channels involved in the ligand-to-metal intramolecular energy transfer process. The nephelauxetic effect was investigated to assess the covalency of the ligand–metal chemical bond. The values of the experimental 4f–4f intensity parameters, suggest that this ion is in a chemical environment less polarisable than in the case of complexes with β-diketonates as ligands.

The methaneseleninate was used as ligand in the synthesis of the new Eu3+ and Gd3+ complexes. The photostability study and emission quantum yield (q) were determined. The nephelauxetic effect was investigated and an energy diagram was used to establish the most important channels involved in the intramolecular energy transfer process.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganic Chemistry Communications - Volume 15, January 2012, Pages 97–101
نویسندگان
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