Journal of Industrial and Engineering Chemistry, Vol.46, 234-243, February, 2017
A highly selective, sensitive and stable fluorescent chemosensor based on Schiff base and poly(azomethine-urethane) for Fe3+ ions
In this paper, Schiff base (PAH) and its poly(azomethine-urethane) derivative (P-PAH) were synthesized and high-quality film sensor of these compounds could be easily fabricated on transparent polyester surface through dip-coating technique. Then, these films were used as fluorescence probes for the detection of metal ions in aqueous solutions. Photophysical properties of fluorescent films were investigated using fluorescence and UV-vis spectrometers. Fluorescence properties of probes were investigated in the presence of a series of differentmetal ions and the results showed thatmonomer and polymer films have a highly sensitive and selective response to Fe3+ ion in deionized water. Moreover, fluorescence measurements showed that the prepared fluorescent films have in the range 143-180 nm Stokes shift value. Also, contact angles of film probes were investigated and contact angles of PAH and PPAH probes measured as 85 ± 1 and 95 ± 2°, respectively.