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A New Family of Luminescent Sensors for Alkaline Earth Metal Ions
Author(s) -
Prodi Luca,
Bolletta Fabrizio,
Zaccheroni Nelsi,
Watt C. Ian F.,
Mooney Nichola J.
Publication year - 1998
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19980615)4:6<1090::aid-chem1090>3.0.co;2-v
Subject(s) - alkaline earth metal , fluorescence , metal ions in aqueous solution , ion , luminescence , metal , inorganic chemistry , chemistry , range (aeronautics) , materials science , physics , optoelectronics , optics , organic chemistry , composite material
The fluorescence of the crown ethers 1 ( n =3–5) is enhanced by more than one hundred times on addition of Ba 2+ , Sr 2+ , and Ca 2+ metal ions, showing in this way an off/on response. This behavior, together with the range of selectivities displayed by this family of crowns toward alkaline earth metal ions, makes them suitable for sensor applications. The appearance of a delayed fluorescence after complexation can be used to increase the signal‐to‐noise ratio in analysis applications.