Electro-fluorescence Switching of Bis-imidazolium Ionic Liquids

W. R. Lee, Y. Kim, J. Y. Kim, T. H. Kim, K. D. Ahn, E. Kim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Room-temperature ionic liquids (RTILs) containing bis-imidazolium salts were explored to control their optical properties of them in an organic device. The neat bis-imidazolium salts showed ionic conductivity of 3.5 × 10 -4 S/cm at room-temperature and the electrochemical window was exhibited within ±2.5 V in a two electrode cell. The bis-imidazolium salts were transparent yellow and showed fluorescence upon excitation with light in the range of 360 to 500 nm. A two electrode organic ionic liquid cell was fabricated using a mixture of PEO 200Blm-TFSI and electroactive molecules to control the emission property of the ionic liquid by electrochemical methods. The first example of the ionic liquid containing electro-fluorescence switch was explored with an electroactive benzyl viologen (BzV) blend of bis-imidazolium ionic liquid.

Original languageEnglish
Pages (from-to)4630-4634
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number9
Publication statusPublished - 2008 Sept

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics


Dive into the research topics of 'Electro-fluorescence Switching of Bis-imidazolium Ionic Liquids'. Together they form a unique fingerprint.

Cite this