| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7143129 | Sensors and Actuators B: Chemical | 2016 | 28 Pages |
Abstract
A two-photon fluorescent probe (DMPCA) for the detection of bisulfite anion in water was developed based on twisted-intramolecular-charge-transfer (TICT) mechanism. Fluorescence intensity of DMPCA increased dramatically (65 fold) upon the addition of HSO3â. The two-photon absorption cross-section of DMPCA was found to be 725 GM at 700Â nm upon the addition of HSO3â. The fluorescent probe showed an excellent selectivity for bisulfite anion over other anions. The nucleophilic addition reaction mechanism with aldehyde was confirmed with NMR and MALDI-TOF. The TICT detection mechanism was confirmed by viscosity-dependent fluorescence spectra and time resolved fluorescence spectra. Moreover, DMPCA was successfully applied to the detection of bisulfite anion in HeLa cells with low cytotoxicity under two-photon excitation.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Shenglong Yu, Xiuli Yang, Zhonglong Shao, Yan Feng, Xinguo Xi, Rong Shao, Qingxiang Guo, Xiangming Meng,