Title of article
A new intramolecular charge transfer receptor as a selective ratiometric ‘off–on’ sensor for Zn2+
Author/Authors
Mashraqui، نويسنده , , Sabir H. and Khan، نويسنده , , Tabrez and Sundaram، نويسنده , , Subramanian and Betkar، نويسنده , , Rupesh and Chandiramani، نويسنده , , Mukesh، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2007
Pages
4
From page
8487
To page
8490
Abstract
A new intramolecular charge transfer (ICT) probe 3 is found to display a highly selective photophysical response in the presence of Zn2+, among various biologically significant metal ions examined. The absorption band of 3 is red shifted by 84 nm and the fluorescence intensity increases 13-fold in the presence of Zn2+. The binding interaction follows the order Zn2+ > Cd2+ > Mg2+ > Ba2+ > Ca2+ > K+ ≅ Na+ ≅ Li+ and the stability constant for 3 + Zn2+ is over an order of magnitude higher compared to biologically competing Ca2+ and Mg2+.
Keywords
ICT probe , UV–Visible , fluorescence , stability constants , Zn2+ ratiometric probe , Synthesis
Journal title
Tetrahedron Letters
Serial Year
2007
Journal title
Tetrahedron Letters
Record number
1857386
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