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Sensor properties of materials based on fluoride polymer F-4SF films modified by polyaniline
Svetlana Shkirskaya,Maria Kolechko,Natalia Kononenko 한국물리학회 2015 Current Applied Physics Vol.15 No.12
The conditions for the formation of an anion-exchange layer of polyaniline on the surface of uncharged hydrophobic polytetrafluoroethylene film F-4SF were found. The effect of the F-4SF films pretreatment by different organic solvents for self-assembly synthesis of the PANI layers on an inert substrate was studied. Formation of PANI layers in the form of emeraldine salt leads to a change of the F-4SF surface properties towards hydrophilic from completely hydrophobic while also adding anion-exchanging properties. Obtained composite film F-4SF/PANI is highly sensitive towards pH value of a solution in which it is immersed, due to protonationedeprotonation reaction of the emeraldine salt. At the same time, this change in the chemical structure of the polyaniline is reversible, so composite material F-4SF/ PANI can be used for development of optical pH sensors.