Abstract
A novel S,S′-diallyl carbohydrazonodithioate derivative 3 of rhodamine B hydrazone was developed as a chemodosimeter for selective detection of mercury ions based on Hg 2+ promoted cyclization. The allyl groups of 3 play a key role in the binding and selection of Hg 2+ ions. The probe responds selectively to Hg 2+ over various other competitive cations with marked chromo- and fluorogenic changes. The formation of stable oxadiazole derivative 8 was a strong driving force for this high selectivity. Practically, this probe is more promising because of the remarkable high selectivity, faster response, low detection limit, and aqueous solubility of 3.
| Original language | English |
|---|---|
| Pages (from-to) | 2571-2574 |
| Number of pages | 4 |
| Journal | Tetrahedron Letters |
| Volume | 53 |
| Issue number | 20 |
| DOIs | |
| State | Published - May 16 2012 |
| Externally published | Yes |
Funding
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0071513). J.K. acknowledges financial support from the Priority Research Center Program (2009-009825) through the National Research Foundation (NRF) of Korea.
Keywords
- Chemodosimeter
- Diallyl carbohydrazonodithioate derivative
- Fluorescence
- Mercury ions
- Selective detection