Journal
DYES AND PIGMENTS
Volume 122, Issue -, Pages 50-58Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2015.06.011
Keywords
Imidazoquinolines; Cation recognition; Anion recognition; Colour; Fluorescence; Proton transfer
Funding
- Spanish Government [MAT2012-38429-C04]
- Generalitat Valenciana [PROMETEO/2009/016]
- Spanish Ministry of Economy and Competitiveness
- Fundacion Carolina
- UPNFM-Honduras
- Fundacao para a Ciencia e Tecnologia (Portugal)
- FEDER-COMPETE through the Centro de Quimica - Universidade do Minho [PEst-C/QUI/UI0686/2013 (FCOMP-01-0124-FEDER-037302)]
- FCT
- [SFRH/BPD/79333/2011]
Ask authors/readers for more resources
Four imidazoquinolines functionalized with different carbocycles and heterocycles have been synthesized and characterized. Acetonitrile solutions of the four receptors presented absorption bands in the 330-370 nm range. The four probes were also emissive with fluorescence bands in the 390-460 nm interval. In a first step, the chromo-fluorogenic behaviour of the four probes was evaluated in the presence of selected anions. Addition of F- induced the appearance of a new red-shifted absorption band together with a moderate quenching of the fluorescence in all four receptors. In a second step, the UV-visible and emission behaviour of the four receptors in the presence of cations was tested. Addition of Hg2+, Cu2+, Co2+, Fe3+, Fe2+, Zn2+, Pb2+, Cd2+, Cr3+ and Al3+ induced a similar optical change in all four receptors (appearance of a broad red-shifted absorption band together with a remarkable quenching of the emission band). (C) 2015 Published by Elsevier Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available