Microelectrode arrays and the use of PEG-functionalized diblock copolymer coatings

Sakshi Uppal, Matthew D. Graaf, Kevin D. Moeller

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


PEG-modified diblock copolymer surfaces have been examined for their compatibility with microelectrode array based analytical methods. The use of PEG-modified polymer surfaces on the arrays was initially problematic because the redox couples used in the experiments were adsorbed by the polymer. This led the current measured by cyclic voltammetry for the redox couple to be unstable and increase with time. However, two key findings allow the experiments to be successful. First, after multiple cyclic voltammograms the current associated with the redox couple does stabilize so that a good baseline current can be established. Second, the rate at which the current stabilizes is consistent every time a particular coated array is used. Hence, multiple analytical experiments can be conducted on an array coated with a PEG-modified diblock copolymer and the data obtained is comparable as long as the data for each experiment is collected at a consistent time point.

Original languageEnglish
Pages (from-to)318-328
Number of pages11
Issue number3
StatePublished - 2014


  • Cyclic voltammetry
  • Ferrocene carboxylic acid
  • Microelectrode arrays
  • PEG


Dive into the research topics of 'Microelectrode arrays and the use of PEG-functionalized diblock copolymer coatings'. Together they form a unique fingerprint.

Cite this