Ag+-induced photoluminescence enhancement in lanthanide post-functionalized MOFs and Ag+ sensing

文献情報

出版日 2017-03-06

DOI 10.1039/C7CP00631D

インパクトファクター 3.676

著者

Nana Sun, Bing Yan

原文を見る

要旨

The robust gallium carboxylate Ga(OH)(btec)·0.5H2O (MIL-61) is selected as a parent MOF to prepare Ln-MIL-61 by PSM. This work investigates the luminescence of Ln-doped MIL-61 (Ln = Eu3+, Tb3+, Sm3+, Dy3+) in the visible light region. Upon 314 nm excitation, the emission spectra of Eu-MIL-61, Tb-MIL-61 and Eu/Tb-MIL-61 all exhibit their respective strong sharp emission bands. However, Sm-MIL-61 and Dy-MIL-61 show very similar emission to MIL-61 and almost no luminescence of Sm3+ and Dy3+. In this work, the weak fluorescence of Sm3+ or Dy3+ doped MIL-61 is effectively sensitized by Ag+. Besides, single-phase white-light emitters based on the resulting 4d–4f heterometallic co-doped MOFs can be realized. Furthermore, Sm-MIL-61 shows more highly sensitive and selective sensing towards Ag+, and is a promising optical sensor for Ag+ detection in a few daily water samples.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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