Ultrasound: A Versatile Tool in Organic Synthesis

Ultrasonics, or what is commonly known as sonication, is an excellent example of how a scientific observation of physical properties of a material can be applied and turned into a useful tool. The study of sonochemistry is concerned with understanding the effect of sonic waves and wave properties on chemical systems. The chemical effects of ultrasound do not come from a direct interaction with molecular species. Studies have shown that no direct coupling of the acoustic field with chemical species on a molecular level can account for sonochemistry or sonoluminescence. Instead, sonochemistry arises from acoustic cavitation: the formation, growth, and implosive collapse of bubbles in a liquid. This releases tremendous energy within the liquid due to the collective energy of the imploding cavities. This is demonstrated in phenomena such as ultrasound, sonication, sonoluminescence, and sonic cavitation. Sonochemistry is that branch, which deals with the study of sonic waves and their properties on chemical systems. Ultrasonication offers a great potential in the processing of liquids and slurries as it can easily be tested in laboratory scale for its effect on various liquid formulations.