A colorimetric and ratiometric fluorescent probe for sulfite based on an intramolecular cleavage mechanism |
| |
| Authors: | Peng Hou Song Chen Kislon Voitchovsky Xiangzhi Song |
| |
| Affiliation: | 1. College of Chemistry & Chemical EngineeringCentral South University;2. Key Laboratory of Resource Chemistry of Nonferrous MetalsMinistry of Education;3. State Key Laboratory for Powder Metallurgy, Changsha, Hunan Province, People's Republic of China |
| |
| Abstract: | A colorimetric and ratiometric fluorescent sulfite probe, the levulinate of 4‐hydroxynaphthalimide, was successfully synthesized from 4‐hydroxy‐naphthalimide and levulinic acid. Through sulfite‐mediated intramolecular cleavage, the probe was converted into 4‐hydroxynaphthalimide, which when excited at 450 nm, displayed a large Stokes shift due to the intramolecular charge transfer process. The probe exhibited high selectivity and sensitivity towards sulfite over other typical anionic species (F–, Cl–, Br–, I–, HPO42–, SO42–, NO3–, AcO–, ClO4–, HCO3–) in HEPES‐buffered solution (25 mm , pH 7.4, 50% acetonitrile, v/v). Copyright © 2013 John Wiley & Sons, Ltd. |
| |
| Keywords: | colorimetric fluorescent probe sulfite |
|
|
