Photoinduced Potential Change by Crowned Triphenylmethane Dye Derivatives in Poly(vinyl chloride)-Based Liquid Membranes

ABSTRACT

Photoirradiation effect on potential response to sodium ion concentrations and photoinduced potential change were investigated with plasticized poly(vinyl chloride) membranes based on triphenylmethane dye derivatives carrying a bis(monoaza-15-crown-5) moiety and a tris(monoaza-15-crown-5) moiety. A drastic photoinduced switching in potential response to sodium ion concentrations was realized by membranes containing crowned triphenylmethane dye derivatives. The photoinduced potential change was affected by complexing species such as a multinuclear complex.

Keywords:

• crown ether
• metal-ion complexation
• photoionization
• poly(vinyl chloride) membrane
• potential response
• triphenylmethane dye

Acknowledgments

This work was supported by a Grant-in-Aids for Scientific Research (No. 15750164) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. One of the authors (R. M. U.) also acknowledges Hayashi Memorial Foundation for Female Natural Scientists for financial support.