Reaction Mechanism and Improved Performance of Solution-Based Electrochemiluminescence Cell Driven by Alternating Current

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概要

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• An AC-driven light-emitting cell based on the electrochemiluminescence (ECL) of tris(2,2'-bipyridyl)ruthenium(II) [Ru(bpy)<inf>3</inf>²⁺] was fabricated by simply placing the electrolyte solution between transparent electrodes, and this AC-driven ECL cell was demonstrated for comparison to a DC-ECL cell. The properties of the ECL cell were dramatically improved by using the AC method. The AC-ECL cell showed the luminance of 56.4 cd/m², the current efficiency of 0.78 cd/A and the turn-on response time of ca. 15 ms under application of 4 V, 50 Hz AC. We also elucidated the detailed mechanisms of the AC-ECL reaction to monitor the faradaic current. These improved properties and the frequency dependence of the AC-ECL cell were discussed in the relation to the revealed mechanisms.

• 2013-05-25

著者

• Nakamura Kazuki

  Department Of Applied Chemistry Faculty Of Engineering Shibaura Institute Of Technology

• Kobayashi Norihisa

  Department Of Image Science Chiba University

• Nobeshima Taiki

  Department of Image and Materials Science, Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan

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