Polyaniline exhibiting stable and reversible switching in the visible extending into the near-IR in aqueous media

Jacob Tarver, Joung Eun Yoo, Yueh Lin Loo

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

Spun-cast films comprising polyaniline (PANI) that is template synthesized with poly(2-acrylamido-2-methyl-1-propanesulfonic acid), PAAMPSA, can be reversibly switched between emeraldine salt, leucoemeraldine base, and for the first time, pernigraniline base states in aqueous media at near-neutral pHs. Transitions between the green, transparent and violet states occur within 1-10 s, comparable to the electrochromic switching times reported for thin films deposited via layer-by-layer approaches. Solvent annealing in dichloroacetic acid induces structural rearrangement within PANI-PAAMPSA, resulting in significantly improved stability and reversibility upon repeated cycling, and moreover, imparting tunable polyelectrochromism that extends into the near-infrared (1100 nm).

Original languageEnglish (US)
Pages (from-to)2333-2340
Number of pages8
JournalChemistry of Materials
Volume22
Issue number7
DOIs
StatePublished - Apr 13 2010

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Polyaniline exhibiting stable and reversible switching in the visible extending into the near-IR in aqueous media'. Together they form a unique fingerprint.

  • Cite this