Polyoxometalates as pH-sensitive probes in self-assembled multilayers.
The polyoxometalate cluster [CoII4(H2O)2P4W30O112]16- (Co-POM) embedded in a self-assembled polyelectrolyte matrix shows a remarkable pH dependence of its electrochemical response, opening a route to use Co-POM as a molecular probe or to fabricate pH microelectrodes.
Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany.
Shaoqin
S
Liu
Dirk G
DG
Kurth
Dirk
D
Volkmer