Open AccessCovalently Bound Plasticized PVC Membranes for Solid State Ion-Selective Devices
Author(s) -
P. D. van der Wal,
Renata Zielinska-Paciorek,
N. F. de Rooij
Publication year - 2003
Publication title -
chimia
Language(s) - English
Resource type - Journals
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/000942903777678704
Subject(s) - membrane , covalent bond , materials science , silane , amine gas treating , ion , chemical engineering , polymer chemistry , adhesion , surface modification , oxide , chemistry , organic chemistry , composite material , metallurgy , biochemistry , engineering
A method is described that makes it possible to covalently link plasticized PVC membranes to glass and other oxide surfaces. It involves the addition of an amine-group containing silane coupling agent and a heating step. Using this method, ion-sensitive field effect transistors (ISFETs) were modified with ion-selective plasticized PVC-membranes. The ion-selective properties of these devices were similar to those of devices prepared without linking the membrane to the surface, while the adhesion was dramatically improved.