| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1164172 | Analytica Chimica Acta | 2015 | 6 Pages |
•Ag+ shows a high specificity for inducing i-motif formation.•A cyanine dye was designed to recognize i-motif formation.•A novel Ag+ sensor is designed.•The sensor shows excellent performance in specificity, sensitivity, and real time response.•Detection of the Ag+ level in freshwater system is proved.
A novel Ag+ sensor has been designed based on the mechanism that i-motif formation induced by Ag+ was sensitively recognized by a cyanine dye. The sensor exhibited an over 130–16,000 fold selectivity toward Ag+ than that toward other metal ions. This research not only provides a step forward toward the development of Ag+ detection but also represents a new application for i-motif DNA.
Graphical abstractThe scheme for sensing Ag+ based on DMSB recognizing motif formation and the molecular structure of DMSB.Figure optionsDownload full-size imageDownload as PowerPoint slide
