Phenanthroline derivative based europium(III) covalently bonded silica hybrid material for high-selectivity sensing of anion and small organic molecule

Yajuan Li, Zheng Zhang, Yaqi Wang, Heng Li, Xingyao Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A new polysilsesquioxane bridge (Phen–OH–Si) was synthesized here using 2-(2-hydroxyphenyl)-imidazo[4,5-f]-1,10-phenanthroline (Phen–OH) and 3-(triethoxysilyl)propyl isocyanate respectively as a ligand of Eu3+ ion and a siloxane network precursor. Then, an organic–inorganic hybrid material covalently grafted with an Eu3+ complex (denoted as Eu(Phen–OH–Si)2Phen) was synthesized by coordination of an Eu3+ ion with a multifunctional precursor Phen–OH–Si and a second ligand Phen in a sol–gel process. This hybrid material was found to exhibit intensive red luminescence under UV light triggered by the ligand antenna effect. Further luminescent studies indicate that Eu(Phen–OH–Si)2Phen not only displays high sensitivity sensing targeted at fluoride ions, but also exhibits distinct solvent-dependent luminescent spectra with emission intensities that are significantly quenched by N,N-dimethylformamide.

Original languageEnglish
Article number111917
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume382
DOIs
Publication statusPublished - 1 Sep 2019
Externally publishedYes

Keywords

  • Europium ion
  • Luminescent
  • Organic–inorganic hybrid material
  • Sensing

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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