P23 Effect of ultrasound irradiation on electrochemiluminescence of [Ru(bpy)<sub>3</sub>]<sup>2+</sup>/lidocaine system

DOI
  • Takahash Fumiki
    Department of Chemistry, Faculty of Science, Shinshu University
  • Shimizu Ryo
    Department of Chemistry, Faculty of Science, Shinshu University
  • Jin Jiye
    Department of Chemistry, Faculty of Science, Shinshu University

Bibliographic Information

Other Title
  • P23 リドカイン麻酔薬を共反応物とした[Ru(bpy)<sub>3</sub>]<sup>2+</sup>系の電気化学発光反応に おける超音波照射の影響

Abstract

Electrochemiluminescence (ECL) of [Ru(bpy)3]2+ using lidocaine as coreactant has been studied upon ultrasound irradiation. ECL signal is detected at +1.2 V (vs. Ag/AgCl) at pH 9.0, which is confirmed by the generation excite state of [Ru(bpy)3]2+ through homogeneous electron transfer process between [Ru(bpy)3]3+ and lidocaine oxidative intermediate radicals at the electrode surface. At pH 11.0, however, two of specific ECL peaks are exhibited at +1.2 V and +1.5 V, respectively, indicating the different reaction route for ECL generation. Under the irradiation by 430 kHz ultrasound, the ECL intensity at +1.2 V increased with the decreasing of ECL intensity at +1.5 V. The ECL at +1.5 V is supposed to be generated between [Ru(bpy)3]3+ and the intermediate species from the electrochemical decomposition of lidocaine. Because relatively low ECL intensity at +1.5 V was measured under ultrasound irradiation, the generation of intermediate radical of lidocaine by chemical reaction to hydroxyl radical was proposed.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390292018957149056
  • DOI
    10.20577/pamjss.26.0_65
  • ISSN
    24241512
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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