![Author ORCID: We display the ORCID iD icon alongside authors names on our website to acknowledge that the ORCiD has been authenticated when entered by the user. To view the users ORCiD record click the icon. [opens in a new tab]](https://chemrxiv.org/engage/assets/public/chemrxiv/images/logos/orcid.png)
Abstract
Polarity-sensitive dansyl derivatives L1 and L2 were synthesized, and their ability to sense pollutant metal ions was investigated. All compounds were highly sensitive towards Cu2+ and Hg2+ metal ions, while L2 could detect and quantify Hg2+ concentrations as low as 2.5 µM. Both L1 and L2 exhibit positive solvatofluorochromic behaviour, modulated in the presence of water, which in turn results in fluorescence enhancement via aggregation-induced emission (AIE). Seeking stability and water solubility, luminescent L1-based polystyrene-block-polybutadiene-block-polystyrene (SBS) microparticles (size: 520 ± 76 nm) were successfully prepared while maintaining the fluorescence emission of fluorophore L1 (22%). This work shows the dansyl-derivative's multiple properties and promising applications in biomedicine and environmental fields.
Supplementary materials
Title
Enhancing water sensing via aggregation-induced emission (AIE) and solvatofluorochromic studies using two new dansyl derivatives containing a disulfide bound: Pollutant metal ions detection and preparation of water-soluble fluorescent polymeric particles
Description
Figure S1. 1H-NMR spectrum of compound 3.
Figure S2. 13C-NMR spectrum of compound 3.
Figure S3. 1H-NMR spectrum of compound L1.
Figure S4. 13C-NMR spectrum of compound L1.
Figure S5. 1H-NMR spectrum of compound L2.
Figure S6. 13C-NMR spectrum of compound L2.
Figure S7. ESI-HRMS spectrum of compound L1.
Figure S8. ESI-HRMS spectrum of compound L2.
Figure S9. Emission, excitation and solid-state emission spectra of compound L1 in
1) acetonitrile, 2) ethanol and 3) DMSO ([L1] = 6 μM).
Figure S10. Emission, excitation, and solid-state emission spectra of compound L1 in
4) chloroform, 5) toluene and 6) THF ([L1] = 6 μM).
Figure S11. Emission, excitation and solid-state emission spectra of compound L2 in
1) acetonitrile, 2) ethanol and 3) DMSO ([L2] = 6 μM).
Figure S12. Emission, excitation, and solid-state emission of compound L2 in
4) chloroform, 5) toluene and 6) THF ([L2] = 6 μM).
Actions
