Electro-fluorescence Switching of Bis-imidazolium Ionic Liquids

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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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
Volume8
Issue number9
DOIs
Publication statusPublished - 2008 Sep 1

Fingerprint

Ionic Liquids
Ionic liquids
Fluorescence
fluorescence
liquids
Salts
salts
Benzyl Viologen
Electrodes
electrodes
room temperature
Ionic conductivity
Polyethylene oxides
cells
ion currents
switches
Optical properties
Switches
optical properties
Temperature

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Lee, W. R. ; Kim, Y. ; Kim, J. Y. ; Kim, T. H. ; Ahn, K. D. ; Kim, Eunkyoung. / Electro-fluorescence Switching of Bis-imidazolium Ionic Liquids. In: Journal of Nanoscience and Nanotechnology. 2008 ; Vol. 8, No. 9. pp. 4630-4634.
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Electro-fluorescence Switching of Bis-imidazolium Ionic Liquids. / Lee, W. R.; Kim, Y.; Kim, J. Y.; Kim, T. H.; Ahn, K. D.; Kim, Eunkyoung.

In: Journal of Nanoscience and Nanotechnology, Vol. 8, No. 9, 01.09.2008, p. 4630-4634.

Research output: Contribution to journalArticle

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AU - Lee, W. R.

AU - Kim, Y.

AU - Kim, J. Y.

AU - Kim, T. H.

AU - Ahn, K. D.

AU - Kim, Eunkyoung

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AB - 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.

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