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Chemical sensors based on periodic mesoporous organosilica @NaYF4:Ln3+ nanocomposites.

Authors
  • Liu, Wanlu1, 2, 3
  • Kaczmarek, Anna M2
  • Van Der Voort, Pascal3
  • Van Deun, Rik1
  • 1 L3 - Luminescent Lanthanide Lab, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium. [email protected] , (Belgium)
  • 2 NanoSensing Group, Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium. [email protected] , (Belgium)
  • 3 Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium. , (Belgium)
Type
Published Article
Journal
Dalton Transactions
Publisher
The Royal Society of Chemistry
Publication Date
Aug 02, 2022
Volume
51
Issue
30
Pages
11467–11475
Identifiers
DOI: 10.1039/d2dt01469f
PMID: 35833424
Source
Medline
Language
English
License
Unknown

Abstract

Here, three unique organic-inorganic hybrid nanocomposite materials prepared by combining NaYF4:Yb3+,Ln3+ (Ln3+ = Er3+, Tm3+, Ho3+) and periodic mesoporous organosilica (PMO) are proposed for both metal ion sensing and solvent sensing. The luminescence properties of the developed hybrid materials, [email protected]:Yb3+,Ln3+, were studied in detail in the solid state and after dispersing in water. It is found that [email protected]:Yb3+,Er3+ showed selective "turn on" luminescence for Hg2+ with the detection limit of 24.4 μM in an aqueous solution. Additionally, the above three materials showed different luminescence emission responses towards water and organic solvents. It is worth noting that all three [email protected]:Yb3+,Ln3+ materials showed "turn on" luminescence towards alcohols. [email protected]:Yb3+,Er3+ and [email protected]:Yb3+,Ho3+ were selected and further developed into sensitive sensors for the detection of water in alcohols by taking advantage of their quenching behavior in water. The detection limit for sensing of water was determined to be 0.21%, 0.18% and 0.29%, corresponding to isopropanol ([email protected]:Yb3+,Er3+), n-butanol ([email protected]:Yb3+,Er3+) and ethanol ([email protected]:Yb3+,Ho3+), respectively. The above results illustrate the potential of these hybrid materials for applications in environmental fields as well as in chemical industries.

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