Jump to main content
Jump to site search

Issue 34, 2016
Previous Article Next Article

A novel near-infrared colorimetric probe for fluoride anions based on a heptamethine dye

Author affiliations

Abstract

A near-infrared heptamethine indocyanine probe was successfully synthesized and demonstrated to be a colorimetric and fluorescent probe for F with high selectivity and sensitivity. In the presence of F, the probe shows a new prominent absorption peak at 942 nm, accompanied by a remarkable solution color change from pale red to colorless in a few seconds, which provides a way for the ‘naked-eye’ detection of fluoride anions. These responses were attributed to the deprotonation of the –NH fragment of an indolyl unit, and the 1H NMR study and density functional theory (DFT) calculations are in agreement with them. Moreover, the probe can be employed to detect F quantitatively within a certain concentration range, and the limit of detection could be as low as 1.3 μM.

Graphical abstract: A novel near-infrared colorimetric probe for fluoride anions based on a heptamethine dye

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 May 2016, accepted on 02 Aug 2016 and first published on 03 Aug 2016


Article type: Paper
DOI: 10.1039/C6AY01312K
Anal. Methods, 2016,8, 6452-6457

  •   Request permissions

    A novel near-infrared colorimetric probe for fluoride anions based on a heptamethine dye

    D. Jin, X. Zhao, Y. Li, X. Yan and L. Chen, Anal. Methods, 2016, 8, 6452
    DOI: 10.1039/C6AY01312K

Search articles by author

Spotlight

Advertisements