Electro-fluorescence Switching of Bis-imidazolium onic Liquids
Authors: Lee, W.R.; Kim, Y.; Kim, J.Y.; Kim, T.H.; Ahn, K.D.; Kim, E.
Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 9, September 2008 , pp. 4630-4634(5)
Publisher: American Scientific Publishers
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 PEO200BIm-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.
Document Type: Research article
Publication date: 2008-09-01
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