Title of article :
Ratiometric/‘On–Off’ sensing of Pb2+ ion using pyrene-appended calix[4]arenes
Author/Authors :
Kumar، نويسنده , , Manoj and Babu، نويسنده , , J. Nagendra and Bhalla، نويسنده , , Vandana and Kumar، نويسنده , , Rajesh، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Abstract :
New fluorescent sensors 6, 7 and 9 based on calix[4]arenes have been synthesized and examined for their binding abilities towards different metal ions (Li+, Na+, K+, Pb2+, Zn2+, Hg2+ and Ag+) by UV and fluorescence spectroscopy. Two of these receptors (6 and 7) show ratiometric sensing while the third receptor (9) shows ‘On–Off’ signaling of Pb2+ ion among the various metal ions tested. The stoichiometry of the complexation was found to be 1:1 as established by Jobʹs plot.
Keywords :
Pb2+ ion selective , Imine , Fluorogenic , Pyrene , On–off
Journal title :
Sensors and Actuators B: Chemical
Journal title :
Sensors and Actuators B: Chemical
