Polymers of intrinsic microporosity in electrochemistry: anion uptake and transport effects in thin film electrodes and in free-standing ionic diode membranes

Yuanyang Rong, Adam Kolodziej, Elena Madrid, Mariolino Carta, Richard Malpass-Evans, Neil B. McKeown, Frank Marken

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)
162 Downloads (Pure)

Abstract

Anion uptake and charge transport in a polymer of intrinsic microporosity (here PIM-EA-TB) is investigated for three cases: (i) the oxidation of ferrocene embedded into a thin film of PIM-EA-TB on a glassy carbon electrode, (ii) the reduction of protons absorbed into a thin film of PIM-EA-TB on a platinum electrode, and (iii) the potential-driven transport of anions and protons in an asymmetrically deposited free-standing PIM-EA-TB membrane working as a current rectifier or "ionic diode". In all three cases the competing effects of the diameter and hydrophobicity (size and hydration energy) of the anion are important. For free-standing membranes very high ionic diode rectification ratios (>103 at ±1V) are observed in particular for thicker deposits of PIM-EA-TB and for chloride or perchlorate containing electrolyte.

Original languageEnglish
Pages (from-to)241-249
Number of pages9
JournalJournal of Electroanalytical Chemistry
Volume779
Early online date30 Nov 2015
DOIs
Publication statusPublished - 15 Oct 2016

Keywords

  • Catalysis
  • Ferrocene
  • Ion exchange
  • Permselectivity
  • Voltammetry
  • Water

Fingerprint

Dive into the research topics of 'Polymers of intrinsic microporosity in electrochemistry: anion uptake and transport effects in thin film electrodes and in free-standing ionic diode membranes'. Together they form a unique fingerprint.

Cite this