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Two 5-(thiophene-2-yl)oxazole derived "turn on" fluorescence chemosensors for detection of Ga3+ and practical applications.
- Source :
-
New Journal of Chemistry . 6/7/2022, Vol. 46 Issue 21, p10386-10393. 8p. - Publication Year :
- 2022
-
Abstract
- Two (5-(thiophene-2-yl)oxazole derived chemosensors, N′-(2-hydroxybenzylidene)-5-(thiophene-2-yl)oxazol-4-carbonylhydrazine (L1) and N′-(3-ethoxy-2-hydroxybenzylidene)-5-(thiophene-2-yl)oxazol-4-carbonylhydrazine (L2), were designed and synthesized via a fluorescence turn-on strategy to specifically recognize Ga3+. Both L1 and L2 showed highly sensitive and selective fluorescence responses toward Ga3+ in the DMSO/H2O buffer solution and exhibited more effective anti-interference performance over other coexisting metal ions including Al3+ and In3+. The limits of detection for Ga3+ were found to be 6.23 × 10−8 M and 1.15 × 10−8 M with L1 and L2, respectively. Job's plots and mass spectrometry (ESI-MS) suggested a 1 : 2 complexation ratio of sensors to Ga3+ with binding constants of 8.54 × 108 M2 for L1 and 1.06 × 108 M2 for L2. The proposed interaction mechanism was further supported by density functional theory. In addition, both sensors were applied to the detection of Ga3+ in environmental water samples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 46
- Issue :
- 21
- Database :
- Academic Search Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 157223684
- Full Text :
- https://doi.org/10.1039/d2nj01672a