White emission magnetic nanoparticles as chemosensors for sensitive colorimetric and ratiometric detection, and degradation of ClO− and SCN− in aqueous solutions based on a logic gate approach. Issue 27 (23rd June 2015)

• Record Type: Journal Article
• Authors: Zhi, Lihua; Wang, Zhiyi; Liu, Jian; Liu, Weisheng; Zhang, Haoli; Chen, Fengjuan; Wang, Baodui
• Is Part Of: Nanoscale. Volume 7:Issue 27(2015)
• Page Start: 11712
• Page End: 11719
• Publication Date: 2015-06-23
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr02307f
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Fluorescent chemosensors for detecting single anions have been largely synthesized. Abstract : Fluorescent chemosensors for detecting single anions have been largely synthesized. However, the simultaneous detection and degradation of multiple anions remain a major challenge. Herein we report the synthesis of a white emission nanoprobe on the basis of a Coumarin-Rhodamine CR1-Eu complex coordinated to dipicolinic acid (dpa)-PEG-Fe3 O4 nanoparticles for the selective detection of ClO − and SCN − ions on controlling by a logic gate. The obtained nanoprobe exhibits three individual primary colors (blue, green, and red) as well as white emission at different excitation energies. Interestingly, this nanoprobe shows a marked rose red to violet emission color change in response to ClO −, a reversible violet to rose red emission color change in response to SCN −, and high ClO − and SCN − selectivity and sensitivity with a detection limit of 0.037 and 0.250 nM, respectively. Furthermore, the SCN − and ClO − can degrade simultaneously through the redox reaction between ClO − and SCN − .