TY - JOUR
T1 - Luminescent properties and CH 3COO - recognition of europium complexes with different phenanthroline derivatives as second ligands
AU - Yang, Chaolong
AU - Luo, Jianxin
AU - Ma, Jianying
AU - Zhu, Dongyu
AU - Miao, Lei
AU - Zhang, Yunfei
AU - Liang, Liyan
AU - Lu, Mangeng
N1 - Funding Information:
The authors appreciate the Guangdong-Hongkong Technology Cooperation Funding (Project No. 2009A091300012 ) and the Natural Science Foundation of Guangdong Province of China (Project No.: 8251065004000001 and E06200692 ).
PY - 2012/8
Y1 - 2012/8
N2 - Six novel europium complexes with phenanthroline derivatives as fluorescence sensor have been prepared, and their structures were characterized by FT-IR, UV-vis, 1H NMR, 13C NMR, ESI-MS, and element analysis. All complexes exhibited long luminescent lifetime and high luminescent quantum efficiency (η). Among these complexes, the complex (a) exhibited the lowest luminescent quantum efficiency and shortest lifetime, which was attributed to the presence of OH oscillators in the corresponding ligand HPIP. Spectroscopic studies, including UV-vis, PL and 1H NMR spectra, showed that these sensors exhibited striking spectra changes in response to CH 3COO - due to hydrogen bonding interaction of imidazolyl NH groups, aromatic and phenanthroline ring's protons with CH 3COO -. Particularly, europium complexes (e) and (f) have a remarkable color changes (from transparent to light-yellow), and hence they were convenient to detect the CH 3COO - with them by naked eye in DMSO solution.
AB - Six novel europium complexes with phenanthroline derivatives as fluorescence sensor have been prepared, and their structures were characterized by FT-IR, UV-vis, 1H NMR, 13C NMR, ESI-MS, and element analysis. All complexes exhibited long luminescent lifetime and high luminescent quantum efficiency (η). Among these complexes, the complex (a) exhibited the lowest luminescent quantum efficiency and shortest lifetime, which was attributed to the presence of OH oscillators in the corresponding ligand HPIP. Spectroscopic studies, including UV-vis, PL and 1H NMR spectra, showed that these sensors exhibited striking spectra changes in response to CH 3COO - due to hydrogen bonding interaction of imidazolyl NH groups, aromatic and phenanthroline ring's protons with CH 3COO -. Particularly, europium complexes (e) and (f) have a remarkable color changes (from transparent to light-yellow), and hence they were convenient to detect the CH 3COO - with them by naked eye in DMSO solution.
KW - 1,10-Phenanthroline derivatives
KW - Anion recognition
KW - Europium (III) complexes
KW - Luminescent property
KW - Quantum efficiency
KW - Sensor
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U2 - 10.1016/j.synthmet.2012.05.005
DO - 10.1016/j.synthmet.2012.05.005
M3 - Article
AN - SCOPUS:84861984131
VL - 162
SP - 1097
EP - 1106
JO - Synthetic Metals
JF - Synthetic Metals
SN - 0379-6779
IS - 13-14
ER -