A versatile fluorescent system for sensing of H+, transition metals, and aromatic carboxylates

Authors
Fabbrizzi, L Licchelli, M Parodi, L Poggi, A Taglietti, A
Citation
L. Fabbrizzi et al., A versatile fluorescent system for sensing of H+, transition metals, and aromatic carboxylates, EUR J INORG, (1), 1999, pp. 35-39
Citations number
16
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
ISSN journal
14341948 → ACNP
Issue
1
Year of publication
1999
Pages
35 - 39
Database
ISI
SICI code
1434-1948(199901):1<35:AVFSFS>2.0.ZU;2-R
Abstract
The fluorescent emission of the N,N-dimethylaniline fragment of the tetrami ne system 3 varies with pH, displaying a maximum of the fluorescent intensi ty, I-F at pH = 5. Binding of transition metals (Cu-II, Ni-II) induces fluo rescence quenching and modifies the I-F vs. pH profile, giving rise to an O FF-ON-OFF type of sensor. The [Zn-II(3)](2+) complex recognises carboxylate anions, both aliphatic and aromatic. Recognition is signalled via fluoresc ence quenching only for aromatic carboxylates.