| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1233291 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2011 | 5 Pages |
A new macrocyclic chemosensor containing two naphthalene fluorophores has been synthesized. The fluorescent properties of this receptor has been studied in the presence of various metal ions such as Na+, Ag+, Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+ and Pb2+. When increasing concentrations of Zn2+ ions were introduced, the emission of L was drastically increased (EFE = 4.34). This special change was not observed when other metal ions were used; such highly selective fluorescent response indicates that this receptor can easily discriminate Zn2+ ions from other similar species. Model calculations at DFT level further suggest the possible interaction mode, and relatively steric position between the host and guest also influence the optical response.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A macrocyclic chemosensor (L) bearing the two naphthalene fluorophores was synthesized. ► L exhibits highly sensitive toward Zn2+ over other cations tested. ► A full minimization of the structure of macrocycle L and [ZnL]2+ were performed.
