A membrane containing highly lipophilic complex as an ion-unblocking layer
was used to design a reference field effect transistor (so-called REFET). S
uch REFET did not respond towards pH in a range of 2-10 and metal cations (
Na+, K+, Ca2+) in a range of 10(-6)-10(-2) M as well as towards chlorides i
n a range of 10(-6)-10(-1) M. (C) 1999 Elsevier Science S.A. All rights res
erved.