Zn2+-Ion Sensing by Fluorescent Schiff Base Calix[4]arene Macrocycles
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
A macrocyclic ligand (H2L) containing two o,o′-bis(iminomethyl)phenol and two calix[4]arene head units has been synthesized and its coordination chemistry towards divalent Ni and Zn investigated. The new macrocycle forms complexes of composition [ML] (M=Zn, M=Ni) and [ZnL(py)2], which were characterized by elemental analysis; IR, UV/Vis, and NMR spectroscopy; electrospray ionization mass spectrometry (ESI-MS); and X-ray crystallography (for [ZnL(py)2] and [NiL]). H2L allows the sensitive optical detection of Zn2+ among a series of biologically relevant metal ions by a dual fluorescence enhancement/quenching effect in solution. The fluorescence intensity of the macrocycle increases by a factor of ten in the presence of Zn2+ with a detection limit in the lower nanomolar region.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 3824-3827 |
Seitenumfang | 4 |
Fachzeitschrift | Chemistry - A European Journal |
Jahrgang | 23 |
Ausgabenummer | 16 |
Publikationsstatus | Veröffentlicht - 17 März 2017 |
Peer-Review-Status | Ja |
Extern publiziert | Ja |
Externe IDs
PubMed | 28195665 |
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Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- calix[4]arenes, fluorescence sensor, macrocyclic complexes, nickel, zinc