Anion/Cation (H2PO4- and Fe3+) induced dual luminescence quenching effect based on terbium solid sensor

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

4 Scopus Citations
View graph of relations



Original languageEnglish
Pages (from-to)888-892
Journal / PublicationJournal of Rare Earths
Issue number6
Online published4 Dec 2010
Publication statusPublished - Dec 2010
Externally publishedYes


An investigation on the photophysical properties of the newly designed terbium imidazole-4,5-dicarboxylic acid complex encapsulated in the inert matrices (tetraethoxysilane, TEOS) was performed. The composite material was very stable and showed strong green emission in pure water. Interestingly, we discovered that the luminescence of hybrid material was selectively responsive to H2PO4-. 1H-NMR and fluorescence spectra supported that the receptor had strong affinity to dihydrogen phosphate. Meanwhile, the luminescence was quenched by Fe3+ when adding different metal ions such as Fe3+, Pd2+, Cd2+, Co2+ and Mn2+ concomitantly. Moreover, thin film was successfully prepared by the same materials and it also exhibited selective recognition behavior to the above two ions. © 2010 The Chinese Society of Rare Earths.

Research Area(s)

  • Dihydrogen phosphate, Hybrid materials, Iron ion, Luminescence, Rare earths, Sensor

Citation Format(s)