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2,Fast Response and High Sensitivity Europium Metal Organic
作者:zhigang xie
关键字:metal organic framework
论文来源:期刊
发表时间:2013年

Iron is one of the most important elements in
the metabolic process for all living system. However, both its
deficiency and excess from normal permissible limits can
induce serious disorders. We synthesized a europium-based
metal−organic framework (Eu-MOF), EuL3
(L =4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine), under hydrothermal
conditions, and used it as a solid luminescence sensor for Fe
3+
ions. The robust EuL3
shows fast response (∼1 min) and high
sensitivity (Stern−Volmer constantKSV= 4.1×10
3
L/mol) for
Fe
3+
ions in aqueous solution or biological systems due to the
existence of chelating terpyridine and open channels. The simple and portable test paper based on the EuL3fluorescent sensor
system provides a convenient and reliable detection of Fe
3+
in every day applications. This pioneering work contributes to extend
the potential application of Ln-MOFs to the biological and environmental areas