Efficient immobilization of a cadmium chemosensor in a thin film: generation of a cadmium sensor prototype.
[reaction: see text] The development of an ion-selective chemosensor for Cd(2+) allows generation of a "real-time" sensor. Immobilization of the chemosensor on quartz was achieved in a simple monolayer and in a thin film using a polymer intermediary. As intended, the thin film contains much more chemosensor than the monolayer and provides measurable responses to aqueous Cd(2+) concentrations below 1 microM. Alkali and alkaline earth ions do not interfere with Cd(2+) sensing; Zn(2+) and Cu(2+) are potential interferents.
Bronson
R Todd
RT
Physical Science Department, College of Southern Idaho, Twin Falls, Idaho 83301, USA. tbronson@csi.edu
Michaelis
David J
DJ
Lamb
Randy D
RD
Husseini
Ghaleb A
GA
Farnsworth
Paul B
PB
Linford
Matthew R
MR
Izatt
Reed M
RM
Bradshaw
Jerald S
JS
Savage
Paul B
PB