Synthesis and luminescence properties of salicylaldehyde isonicotinoyl hydrazone derivatives and their europium complexes.
Four novel salicylaldehyde isonicotinoyl hydrazone derivatives and their corresponding europium ion complexes were synthesized and characterized, while the luminescence properties and the fluorescence quantum yields of the target complexes were investigated. The results indicated that the ligands favored energy transfers to the emitting energy level of europium ion, and four target europium complexes showed the characteristic luminescence of central europium ion. Besides the luminescence intensity of the complex with methoxy group, which possessed the highest fluorescence quantum yield (0.522), was stronger than that of other complexes. Furthermore, the electrochemical properties of the target complexes were further investigated by cyclic voltammetry, the results indicated that the highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO) energy levels and the oxidation potential of the complexes with electron donating group increased, however, that of the complexes with accepting electron group decreased.
School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
Wenfei
W
Shan
School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
Fen
F
Liu
School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
Jiang
J
Liu
Hunan Labour Protection Institute of Nonferrous Metals. Changsha 410014, China.
Yanwen
Y
Chen
School of Chemical Engineering, Ningbo University of Technology, Ningbo 315016, China.
Zehui
Z
Yang
School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China. Electronic address: dcguo2001@hnu.edu.cn.
Dongcai
D
Guo
D000083:Acetanilides / Q000138:chemical synthesis / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D055664:Electrochemical Techniques; D005063:Europium / Q000737:chemistry*; D005453:Fluorescence; D007538:Isoniazid / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry*; D008024:Ligands; D049449:Luminescence; D013055:Spectrophotometry, Infrared; D013696:Temperature
D000083:Acetanilides; D056831:Coordination Complexes; D008024:Ligands; D005063:Europium; D007538:Isoniazid
Acylhydrazone; Complex; Electrochemical properties; Luminescence properties; Synthesis