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. Author manuscript; available in PMC: 2012 Jul 27.
Published in final edited form as: ACS Appl Mater Interfaces. 2011 Jun 27;3(7):2677–2685. doi: 10.1021/am2004637

Figure 7.

Figure 7

The potentiometric response of a CL/PANI-sol-gel/ITO electrode coated with a PSLB was monitored to assess the barrier properties of the PSLB during exposure to a variety of experimental conditions: (a) The pH of the buffer above the PSLB was changed from 7 to 6.5, then to 6, and finally back to 7. (b) Valinomycin solution was injected into the flow cell, allowed to partition into the PSLB. The cell was then flushed with pH 7 buffer. The pH of the buffer above the PSLB was changed from 7 to 6 and then back to 7. (c) CCCP solution was injected into the flow cell, allowed to partition into the PSLB, and the cell was flushed with pH 7 buffer. In all cases, the cell potential was measured 5 min after each injection of fresh buffer.