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Synthesis and Properties of Salicyladehyde Salicyhydrazone Derivatives and Their Europium Complexes

Four novel salicyladehyde salicyhydrazone derivatives and their corresponding europium (Eu 3+ ) complexes were synthesized and characterized. The formulas of the complexes were [EuL a−d (NO 3 ) 2 ](NO 3 ) · H 2 O. The investigatoin of fluoresence properties of the Eu 3+ complexes showed that the sal...

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Published in:Journal of fluorescence 2014-11, Vol.24 (6), p.1661-1669
Main Authors: Meng, Defen, Liu, Fen, Lian, Xiaomei, Yang, Zehui, Guo, Dongcai
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description Four novel salicyladehyde salicyhydrazone derivatives and their corresponding europium (Eu 3+ ) complexes were synthesized and characterized. The formulas of the complexes were [EuL a−d (NO 3 ) 2 ](NO 3 ) · H 2 O. The investigatoin of fluoresence properties of the Eu 3+ complexes showed that the salicyladehyde salicyhydrazone derivatives were efficient sensitizers for the fluoresence of Eu 3+ ions. The fluorescence intensity of the complex substituted by methyl (−CH 3 ) was the strongest among all the Eu 3+ complexes. The exploration of the electrochemical properties of the Eu 3+ complexes showed that the introduction of electron-donating groups methyl and methoxyl (−CH 3 and −OCH 3 ) could increase the oxidation potential and the highest occupied molecular orbital (HOMO) energy level of the Eu 3+ complex; however, the results of introduction of electron-withdrawing group were just opposite.
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subjects Aldehydes - chemistry
Analytical Chemistry
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Derivatives
Electrode potentials
Energy levels
Europium
Europium - chemistry
Exploration
Fluorescence
Hydrazones - chemistry
Models, Molecular
Molecular orbitals
Molecular Structure
Organometallic Compounds - chemical synthesis
Original Paper
Synthesis
title Synthesis and Properties of Salicyladehyde Salicyhydrazone Derivatives and Their Europium Complexes
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