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Highly Selective Schiff-Base Fluorescent Probe for Rare Earth Ion Lu3+
- Source :
- Russian Journal of General Chemistry. 91:1093-1098
- Publication Year :
- 2021
- Publisher :
- Pleiades Publishing Ltd, 2021.
-
Abstract
- A novel Schiff base fluorescent probe for rare earth ion Lu3+ is reported. Emission intensity of the probe is intrinsically non-fluorescent, which is due to isomerization of the C=N bond in the excited-state proton transfer (ESPT) of phenolic protons of the salicylic amide moiety. In the presence of Lu3+, fluorescence intensifies significantly due to inhibition of the C=N isomerization and ESPT. The Schiff base is characterized by high sensitivity and selectivity towards Lu3+. The fluorescence turn-on mechanism of Lu[L]2 system is proposed.
Details
- ISSN :
- 16083350 and 10703632
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- Russian Journal of General Chemistry
- Accession number :
- edsair.doi...........295d569b60d8b91aa932530ed32ba2f1