| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5276887 | Tetrahedron Letters | 2007 | 6 Pages |
Abstract
Amino-based fluoroionophores 1 and 2 can selectively sense alkaline earth metal ions in MeCN under both neutral and acidic conditions by different signaling mechanisms. The fluoroionophoric behavior for the neutral probes is characterized by an 'off-on' photoinduced electron transfer (PET)-like fluorescence intensity response due to a switching from a twisted internal charge transfer (TICT) to a planar internal charge transfer (PICT) state. For the protonated probes (i.e., 1/H+ and 2/H+), the fluorescing species is the localized stilbene fluorophores, but dual fluorescence is induced upon metal-ion recognition through a deprotonation process.
Graphical abstractDownload full-size image
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Jye-Shane Yang, Chung-Yu Hwang, Mon-Yao Chen,