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A Versatile Fluorescent System for Sensing of H + , Transition Metals, and Aromatic Carboxylates
Author(s) -
Fabbrizzi Luigi,
Licchelli Maurizio,
Parodi Luisa,
Poggi Antonio,
Taglietti Angelo
Publication year - 1999
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199901)1999:1<35::aid-ejic35>3.0.co;2-e
Subject(s) - chemistry , fluorescence , transition metal , combinatorial chemistry , nanotechnology , photochemistry , organic chemistry , catalysis , physics , quantum mechanics , materials science
The fluorescent emission of the N,N ‐dimethylaniline fragment of the tetramine system 3 varies with pH, displaying a maximum of the fluorescent intensity, I F , at pH = 5. Binding of transition metals (Cu II , Ni II ) induces fluorescence quenching and modifies the I F vs. pH profile, giving rise to an OFF‐ON‐OFF type of sensor. The [Zn II ( 3 )] 2+ complex recognises carboxylate anions, both aliphatic and aromatic. Recognition is signalled via fluorescence quenching only for aromatic carboxylates.