The one-electron oxidation of a Ru(II) phthalocyanine induces a dramatic colour change and provides a useful tool for the selective and highly sensitive colorimetric detection of copper(II) ions in neat aqueous solutions.
![A colorimetric molecular probe for Cu(II) ions based on the redox properties of Ru(II) phthalocyanines](https://www.iciq.org/wp-content/uploads/2014/03/A-colorimetric-molecular_eng_noticies_articles_2008_6.gif)
The one-electron oxidation of a Ru(II) phthalocyanine induces a dramatic colour change and provides a useful tool for the selective and highly sensitive colorimetric detection of copper(II) ions in neat aqueous solutions.