Photocharacterization of some chromoionophore structures with fiber optics for sensing purposes

In the first part of this work, original Hg(II) sensor was tried to be developed by making use of 4-{ (1E, 3E)-3-[(4- chloro-phenyl )imino]-1-propenyl}-N,N-dimetilanilin (CPIPA), a newly synthesized indicator dye. CPIPA, was spectrophotometrically characterized in various solvents and ionic liquids. Spectral response of dye to dissolved mercury and pH and was considered. The complex stoichiometry between dye and heavy metal was defined. In addition to that, the transformation of spectral response by time was studied.In the second part, an original Al3+ probe was tried to be developed. Organic fluoroionophore; N-N?-bis (2-hydroxybenzylidene)-ethane-1,2-diamine (Y1), was studied in various solvents (dichlorometan, tetrahydrofurane, toluen and ethanol) by using absorption and emission spectroscopy.In all sensor designs, sensor response, stoichiometry of possible complex between the fluoroionophore and metal cation, possibility of regeneration, detection limit, linear working range and repeatability were defined by using absorption and emission based spectrophotometric techniques.