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A new ternary Eu(III) β‐diketonate complex with diimine ligand and its application as fluorescent probe for highly sensitive and selective ammonia sensor.
- Source :
- Applied Organometallic Chemistry; Jul2022, Vol. 36 Issue 7, p1-9, 9p
- Publication Year :
- 2022
-
Abstract
- The rapid and accurate detection of ammonia is very important for manufacture and environmental monitoring, which needs to be developed urgently. Herein, a thin film‐based fluorescence sensor is fabricated by using a ternary europium (III) complex probe for ammonia. The new complex Eu(TPM)3(2‐PBO) (1) was designed and synthesized by utilizing a trifluoromethyl substituted β‐diketone ligand TPM and a diimine ligand 2‐PBO (TPM = 1,1,1‐trifluoro‐5,5‐dimethyl‐2,4‐hexanedione, 2‐PBO = 2‐(2′‐pyridyl)‐benzoxazole). This complex probe was synthetically characterized by elemental analysis, crystallographic and spectroscopic analysis, and photoluminescence (PL) study. The crystallographic analysis revealed complex 1 as a neutral complex structure with the Eu(III) center in a distorted square antiprism EuO6N2 coordination polyhedron. Based on this complex probe, a thin film fluorescence sensor with highly sensitive and selective response to ammonia was developed by polymethyl methacrylate (PMMA): complex composite and cellulose paper support. When the paper‐based sensor was exposed to ammonia, its PL emission showed a sensing behavior of rapid quenching. Surprisingly, this new method can achieve excellent limit of detection as low as 2.740 × 10−6 ppm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02682605
- Volume :
- 36
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Applied Organometallic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 157462750
- Full Text :
- https://doi.org/10.1002/aoc.6752