Quadruple-stranded Eu-helicate Assembled from Bis-β-diketonate: Its Stability Towards Metal Ions |
| |
Authors: | ZHANG Lei LI Hongfeng CHEN Peng SUN Wenbin YAN Pengfei |
| |
Institution: | Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P. R. China |
| |
Abstract: | Herein, we reported the synthesis and investigation of highly luminescent quadruple-stranded helicate (C6H16N)4Eu2(MBDA)4]2.3C4H10O·4C2H3N(1-Eu)H2MBDA=N-methyl-4,4'-bis(4,4,4-trifluoro-1,3-dioxobutyl)di- phenylamine] for its stability toward metal ions in the solution. The material was characterized via X-ray crystallographic technique, Fourier transform infrared(FTIR) spectroscopy and electrospray ionization quadrupole time-of- flight(ESI-TOF) mass spectrometry. The results on the luminescence quantum yields clearly demonstrate that the ligand can effectively sensitize the luminescence of the Eu3+ ions(Φoverall=15%). Upon the addition of different metal ions(i. e., Ag+, Cd2+, Zn2+, Fe3+, Al3+ and Ni2+) to the CH3CN solution of compound 1-Eu, the emission intensities of Eu3+ ions at 612 nm were affected to some extent, which could be attributed to the presence of ion exchanges between Eu3+ ions and the metals ions, and the result was confirmed by ESI-TOF mass spectrometry. |
| |
Keywords: | Helicate Fluorescence Displacement Bis-β-diketonate |
|
| 点击此处可从《高等学校化学研究》浏览原始摘要信息 |
| 点击此处可从《高等学校化学研究》下载免费的PDF全文 |
|