期刊
DALTON TRANSACTIONS
卷 47, 期 48, 页码 17479-17485出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt04042g
关键词
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资金
- National Natural Science Foundation of China [U1607101]
- Natural Science Foundation of Liaoning Province [2015020199]
- Fundamental Research Funds for the Central Universities of China [DUT17LK44]
An anionic layered coordination polymer [Eu(BTEC)(0.5)(HCOO)(H2O)(2)] (1) has been successfully synthesized via a solvothermal method (H4BTEC = 1,2,4,5-benzenetetracarboxylic acid, HCOOH = formic acid). Compound 1 possesses two-dimensional layers, which further generate a three-dimensional supramolecular network by hydrogen bonds existing between carboxylic oxygen, formate anion and H2O molecules of two adjacent layers. Interestingly, 1 shows high luminescence quenching efficiency upon addition of Fe3+ ions when it was dispersed in water even in the presence of interfering ions such as Na+, Ag+, Ca2+, Cd2+, Co2+, Cu2+, Mg2+, Mn2+, Zn2+ and Al3+. When dispersed in DMSO solution, 1 displays excellent sensitivity and selectivity towards both Cu2+ and Fe3+ ions. Possible quenching mechanisms for detection of Fe3+ and Cu2+ ions were carefully investigated and proposed based on a dynamic quenching process, static quenching process and fluorescence inner filter effect. Moreover, the as-prepared particles can be used for visualizing latent fingerprints on various substrates. These results indicate that a Eu(iii)-based coordination polymer has great potential in detection and security application.
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