Triphenylphosphine-assisted highly sensitive fluorescent chemosensor for ratiometric detection of palladium in solution and living cells†
Hailiang Nie,Junming Geng,Jing Jing,Yamin Li,Wen Yang,Xiaoling Zhang
RSC Advances Pub Date : 10/30/2015 00:00:00 , DOI:10.1039/C5RA17819C
Abstract

Accurate and sensitive detection of palladium (Pd) is essential for both environmental and human health applications. This paper describes a triphenylphosphine (PPh3)-assisted highly sensitive fluorescent chemosensor for ratiometric detection of Pd2+ concentrations up to 300 nM with an LOD of 1 nM. During the detection, PPh3 plays a crucial role in improving the sensitivity of this chemosensor. The chemosensor also has suitable water-solubility which allows detection of Pd2+ in solution. Our studies show that it exhibits excellent selectivity toward Pd2+ and undergoes a color change from colorless to yellow to allow visual detection of Pd2+. Besides detection in solution, this chemosensor also shows great potential as an imaging reagent to detect Pd2+ as low as 0.03 ppm in diverse cells.

Graphical abstract: Triphenylphosphine-assisted highly sensitive fluorescent chemosensor for ratiometric detection of palladium in solution and living cells