Title
Selective Fluorescence Sensing Of Zinc And Mercury Ions With Hydrophilic 1,2,3-Triazolyl Fluorene Probes
Abstract
The ability to rapidly detect biologically and environmentally significant metal ions such as zinc and mercury is important to study a number of important cellular and environmental processes. Hydrophilic bis(1,2,3-triazolyl)fluorene- based derivatives containing a 1,2,3-triazole-based recognition moiety were synthesized through Click chemistry and characterized by UV-vis absorption, fluorescence emission, and two-photon absorption as new fluorescence sensing probes, selective for Zn2+ and Hg2+ ions. The UV-vis absorption and fluorescence emission spectra of the complexes exhibited blue-shifted absorption and emission spectra upon chelation to Zn2+ and Hg2+ ions, resulting in ca. 2-fold enhancement in fluorescence. Fluorometric titration revealed that 1:2 and 1:3 ligand to metal complexes formed with binding constants of 108 and 1016 for Zn 2+ and Hg2+, respectively. The two-photon absorption cross sections for the probes and probe-metal ion complexes ranged from 200 to 350 GM at 800 nm. These novel fluorescent compounds may have potential as new metal ion sensors to probe cellular and biological environments. © 2010 American Chemical Society.
Publication Date
6-8-2010
Publication Title
Chemistry of Materials
Volume
22
Issue
11
Number of Pages
3472-3481
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1021/cm100599g
Copyright Status
Unknown
Socpus ID
77953035354 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/77953035354
STARS Citation
Nguyen, Dao M.; Frazer, Andrew; Rodriguez, Luis; and Belfield, Kevin D., "Selective Fluorescence Sensing Of Zinc And Mercury Ions With Hydrophilic 1,2,3-Triazolyl Fluorene Probes" (2010). Scopus Export 2010-2014. 948.
https://stars.library.ucf.edu/scopus2010/948