Water-soluble luminescent hybrid aminoclay grafted with lanthanide complexes synthesized by a Michael-like addition reaction and its gas sensing application in PVP nanofiber

Qing Feng Li, Lin Jin, Lili Li, Wenpei Ma, Zhenling Wang, Jianhua Hao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)

Abstract

Aminoclay was used as a scaffold for lanthanide complexes and dye molecules for light harvesting applications. However, these syntheses are mainly based on a non-covalent electrostatic attraction between aminoclay and guest molecules. Herein, we develop a strategy to synthesize luminescent aminoclay by a Michael-like addition reaction between an amino-group of aminoclay and a Michael acceptor group. UV absorbance, photoluminescence, and phosphorescence spectra studies confirmed that luminescent lanthanide complexes were covalently grafted onto the amionclay. We found that the hybrid aminoclays (AC-Ln(DPA)n) exhibit favorable luminescent properties coupled with good water-solubility. Furthermore, the luminescent aminoclay can be incorporated into water-soluble polyvinylpyrrolidone (PVP) to obtain a highly luminescent, physically crosslinked nanofiber by electrospinning technology. Interestingly, an exposure of the nanofiber to HCl vapors can cause a significant quenching of Eu3+luminescence, while a remarkable luminescence enhancement occurred upon exposure of the acid-treated nanofiber to Et3N vapors. Further studies indicated that this reversible luminescence change is due to the dissociation and recovery of Eu3+complexes by HCl and Et3N vapors. The results present a promising gas sensing application based on developed hybrid luminescent materials.
Original languageEnglish
Pages (from-to)4670-4676
Number of pages7
JournalJournal of Materials Chemistry C
Volume5
Issue number19
DOIs
Publication statusPublished - 1 Jan 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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