Exclusive Detection of Sub‐Nanomolar Levels of Palladium(II) in Water: An Excellent Probe for Multiple Applications. Issue 11 (9th September 2014)

• Record Type: Journal Article
• Authors: Kumari, Namita; Dey, Nilanjan; Kumar, Krishan; Bhattacharya, Santanu
• Is Part Of: Chemistry, an Asian journal. Volume 9:Issue 11(2014:Nov.)
• Page Start: 3174
• Page End: 3181
• Publication Date: 2014-09-09
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201402635
• Languages: English
• ISSNs: 1861-4728

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new colorimetric probe has been developed for the detection and estimation of Pd^II at sub‐nanomolar concentrations. The probe consisted of rhodamine (signaling unit), which was linked with a bis‐picolyl moiety (binding site) through a phenyl ring. Pd^II induced opening of the spirolactam ring of the probe with the generation of a prominent pink color. The excellent selectivity of the probe towards Pd^II over Pd⁰ or Rh^II ensured its potential utility for the detection of residual palladium contamination in pharmaceutical drugs and in Pd‐catalyzed reactions. The probe showed a "turn‐on" (bright yellow) fluorescence upon the addition of Pd^II, which made it suitable for the detection of Pd contaminants in mammalian cells.</p> </abstract>