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Chemistry LibreTexts

3: Enhancement of Chemiluminescence

  • Page ID
    76115
    • 3.1: Micellar Enhancement of Chemiluminescence
      Well-defined mechanistic principles have emerged to rationalize micellar enhancement of chemiluminescence. These occur in the microenvironment (i.e. polarity, viscosity and/or acidity, etc.), in the chemical and photophysical pathway and in the solubilization, concentration and organization of the solute/reactant. We shall now use these principles as a framework for discussing this work and it will become clear that they are highly inter-related rather than mutually exclusive.
    • 3.2: Dye Enhancement of Chemiluminescence
      Chemiluminescence is often very weak and to use it, or even to investigate it, it is necessary to enhance it. One way to do this is to use fluorescent dyes. So it is necessary to find a link between the properties of the dye and the degree of enhancement achieved. One key property is the fluorescence quantum yield of the dye; this must be greater than the chemiluminescence quantum yield of the original emitter.
    • 3.3: Enhancement of Chemiluminescence by Ultrasound
      A novel ultrasonic flow injection chemiluminescence (FI-CL) manifold for determining hydrogen peroxide (H2O2) has been designed[1]. Chemiluminescence obtained from the luminol-H22-cobalt (II) reaction was enhanced by applying 120 W of ultrasound for a period of 4 s to the reaction coil in the FI-CL system and this enhancement was verified by comparison with an identical manifold without ultrasound.

    Thumbnail: Chemiluminescence after a reaction of hydrogen peroxide and luminol. This is an image from video youtu.be/8_82cNtZSQE. (CC BY-SA 4.0; Tavo Romann).

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