Novel ordered mesoporous Eu(DBM)3phen/APTES-SBA-15 (EAS) composites with reasonable photoluminescence property and interesting morphology of bundles of pearl-like chains were synthesized. The characteristics of the me...Novel ordered mesoporous Eu(DBM)3phen/APTES-SBA-15 (EAS) composites with reasonable photoluminescence property and interesting morphology of bundles of pearl-like chains were synthesized. The characteristics of the mesostructure and the optical properties of the prepared samples were investigated by means of XRD, FTIR, SEM, TEM, N2 adsorption–desorption and PL spectroscopy. The results indicate that the as-made EAS composites have long-distance ordered mesoporous structure. Compared with the Eu(DBM)3phen complex, it is found that the EAS composites perform a considerable photoluminescence with good color purity. It is proposed that the anchored amine from the APTES and quantum size effect of the Eu(DBM)3phen complex have great effect on the photoluminescence of the EAS composites.展开更多
The complex of Eu 3+ and Enoxacin(ENX) and Phen was synthesized. Its compositions is Eu(ENX)_3(phen)Cl_3·2H_2O. Its fluorescence spectra were studied. The results show that the strong fluorescence emitting of 592...The complex of Eu 3+ and Enoxacin(ENX) and Phen was synthesized. Its compositions is Eu(ENX)_3(phen)Cl_3·2H_2O. Its fluorescence spectra were studied. The results show that the strong fluorescence emitting of 592 and 616 nm for Eu 3+ in the Eu(ENX)_3(phen)Cl_3·2H_2O complex is related to the transitions 5D_0-7F_1 and 5D_0-7F_2 respectively. A sensitive method for the determination of adenosine triphosphate(ATP) by fluorescence quenching is proposed. The method is based on the ability of ATP to inhibit the formation of a strong fluorescent complex of Eu(ENX)_3(phen)Cl_3·2H_2O. In conditions of pH 6.7 in HAc-NaAc buffer and λ_ ex=340 nm and λ_ em=616 nm, the linear range of the determination is 0.4～ 10 μg·ml -1 and the detection limit is 0.034 μg·ml -1 for ATP. The method was applied to determine ATP in adenosine disodium triphosphate injection samples with relative standard deviation of 212% and recovery of 94.8%～1037%.展开更多
The complex Eu(IB)_3(phen)·2H_2O was synthesized. The results show that the strong fluorescence emitting of 593 and 615 nm for Eu^(3+) in the Eu(IB)_3(phen) complex is related to the transitions (()~5D_0-()~7F_1)...The complex Eu(IB)_3(phen)·2H_2O was synthesized. The results show that the strong fluorescence emitting of 593 and 615 nm for Eu^(3+) in the Eu(IB)_3(phen) complex is related to the transitions (()~5D_0-()~7F_1) and (()~5D_0-()~7F_2,) respectively. A sensitive method for the determination of adenosine disodium triphosphate (ATP) by fluorescence quenching is proposed. The method is based on the ability of ATP to inhibit the formation of a strong fluorescent complex of Eu(IB)_3(phen). In conditions of pH 6.7 HAc-NaAc buffer, λ_(ex)=273 nm and λ_(em)=615 nm, the linear range of the determination was 0.1～10 μg·ml^(-1) and the detection limit was 0.03 μg·ml^(-1) for ATP. The method has been applied to determine ATP in adenosine disodium triphosphate tablets samples with relative standard deviation of 2.18% and recovery of (98.4%～)104.0%.展开更多
基金Project (SYSJJ2003-15) supported by the Opening Foundation of the Key Laboratory of the Ministry of Education of China
文摘Novel ordered mesoporous Eu(DBM)3phen/APTES-SBA-15 (EAS) composites with reasonable photoluminescence property and interesting morphology of bundles of pearl-like chains were synthesized. The characteristics of the mesostructure and the optical properties of the prepared samples were investigated by means of XRD, FTIR, SEM, TEM, N2 adsorption–desorption and PL spectroscopy. The results indicate that the as-made EAS composites have long-distance ordered mesoporous structure. Compared with the Eu(DBM)3phen complex, it is found that the EAS composites perform a considerable photoluminescence with good color purity. It is proposed that the anchored amine from the APTES and quantum size effect of the Eu(DBM)3phen complex have great effect on the photoluminescence of the EAS composites.
文摘The complex of Eu 3+ and Enoxacin(ENX) and Phen was synthesized. Its compositions is Eu(ENX)_3(phen)Cl_3·2H_2O. Its fluorescence spectra were studied. The results show that the strong fluorescence emitting of 592 and 616 nm for Eu 3+ in the Eu(ENX)_3(phen)Cl_3·2H_2O complex is related to the transitions 5D_0-7F_1 and 5D_0-7F_2 respectively. A sensitive method for the determination of adenosine triphosphate(ATP) by fluorescence quenching is proposed. The method is based on the ability of ATP to inhibit the formation of a strong fluorescent complex of Eu(ENX)_3(phen)Cl_3·2H_2O. In conditions of pH 6.7 in HAc-NaAc buffer and λ_ ex=340 nm and λ_ em=616 nm, the linear range of the determination is 0.4～ 10 μg·ml -1 and the detection limit is 0.034 μg·ml -1 for ATP. The method was applied to determine ATP in adenosine disodium triphosphate injection samples with relative standard deviation of 212% and recovery of 94.8%～1037%.
文摘The complex Eu(IB)_3(phen)·2H_2O was synthesized. The results show that the strong fluorescence emitting of 593 and 615 nm for Eu^(3+) in the Eu(IB)_3(phen) complex is related to the transitions (()~5D_0-()~7F_1) and (()~5D_0-()~7F_2,) respectively. A sensitive method for the determination of adenosine disodium triphosphate (ATP) by fluorescence quenching is proposed. The method is based on the ability of ATP to inhibit the formation of a strong fluorescent complex of Eu(IB)_3(phen). In conditions of pH 6.7 HAc-NaAc buffer, λ_(ex)=273 nm and λ_(em)=615 nm, the linear range of the determination was 0.1～10 μg·ml^(-1) and the detection limit was 0.03 μg·ml^(-1) for ATP. The method has been applied to determine ATP in adenosine disodium triphosphate tablets samples with relative standard deviation of 2.18% and recovery of (98.4%～)104.0%.
