Single-Bubble Sonochemiluminescence in Aqueous Luminol Solutions

Sonochemiluminescence (SCL) of luminol due to a single bubble is studied through spectral measurement. No SCL was observed from a stable single bubble that emitted high-intensity sonoluminescence (SL). In contrast, SCL was observed under conditions of an unstable dancing bubble, where a bubble grows...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2002-09, Vol.124 (35), p.10250-10251
Main Authors: Hatanaka, Shin-ichi, Mitome, Hideto, Yasui, Kyuichi, Hayashi, Shigeo
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Ultrasonic chemistry
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Summary:Sonochemiluminescence (SCL) of luminol due to a single bubble is studied through spectral measurement. No SCL was observed from a stable single bubble that emitted high-intensity sonoluminescence (SL). In contrast, SCL was observed under conditions of an unstable dancing bubble, where a bubble grows and ejects tiny bubbles, making it “dance” by counteraction. Furthermore, SCL was observed from dancing bubbles even when SL was not observed, depending on the dissolved gas content. The instability of bubble collapse is the key parameter governing SCL.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja0258475