120th General Meeting of the KCS

Type Award Lecture in Division
Area Recent Advances in Electrochemistry
Room No. Room 201+202
Time FRI 10:20-:
Code ELEC2-3
Subject Use of Nanoscale Functional Materials in Electrochemiluminescence: Making Electrochemiluminescence Brighter
Authors Joohoon Kim
Department of Chemistry, Kyung Hee University, Korea
Abstract Electrochemiluminescence (ECL) is a unique luminescent phenomenon in which electrochemically generated species are involved to form excited states emitting light. Since ECL provides beneficial characteristics over photoluminescence, including low background emission, good temporal and spatial controllability, robustness, and instrumental simplicity, the ECL technique has been utilized as a versatile tool in a variety of electroanalytical applications. Especially, since Bard and his co-workers presented for the first time a new approach for generating ECL (i.e., coreactant pathways) in the 1980s, the ECL technique has been achievable in aqueous environment, and thus been popular to the clinical and bioanalytical applications. To further expand the usefulness of ECL in the applications, many promising approaches have been suggested for amplification of ECL signals. Of the approaches, we recently reported the use of nanoscale functional materials such as dendrimer-encapsulated nanoparticles and chemically converted graphenes for the enhancement of ECL. In the present talk, as a humble first-step to the long journey toward making ECL brighter, we discuss mainly about the use of dendrimers for enhanced ECL. First, we discuss highly enhanced ECL of Ru(bpy)32+ (bpy = 2,2’-bipyridyl) or luminol with appropriate coreactants on electrodes modified with amine-terminated dendrimers encapsulating catalytic nanoparticles. Second, we discuss intense ECL of Ru(bpy)32+ in the presence of amine-terminated dendrimers as a coreactant especially when utilizing intramolecular reactions between Ru(bpy)32+ and dendrimers.
E-mail