Optical sensor for the determination of cations

Details Optical sensor for the determination of cations Optical sensor for the determination of cations

C - Chemistry, Metallurgy

07

D

C07D 219/08 (2006.01) C07D 311/82 (2006.01) G01N 21/79 (2006.01) G01N 31/22 (2006.01) G01N 33/52 (2006.01) G01N 33/84 (2006.01)

Patent

CA 2119840

Optical sensor for the determination of cations Abstract Compounds of the formulae I and II Image (I), Image (II), in which R1 and R3, and R4 and R6 are C1-C30alkyl or C1-C30alkyl-CO-, and R2 and R5 are H or C1-C30alkyl, with the proviso that the total number of carbon atoms in the alkyl groups is at least 12, and salts thereof with inorganic or organic acids are fluorophores of high basicity which can be used in membranes for the optical determination of cations in aqueous media, in particular potassium ions, through the measurement, in particular, of the concentration-dependent reduction in fluorescence.

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