


What are Excimers? Definition, Formation, and Applications
An excimer is a type of molecule that is formed when two or more molecules are brought together and then broken apart, often through the application of energy. This process can result in the formation of a highly reactive species that can undergo chemical reactions with other molecules. Excimers are commonly used in a variety of fields, including chemistry, physics, and biology, and have a wide range of applications.
Excimer molecules are typically formed through the interaction of two or more molecules that have a high degree of electron density, such as carbon-carbon double bonds or aromatic rings. When these molecules are brought together, they can form a stable complex that is held together by weak intermolecular forces, such as van der Waals forces or hydrogen bonding. This complex can then be broken apart through the application of energy, such as through the use of light or heat.
One common example of an excimer is the acetylene dimer, which is formed when two acetylene molecules (C2H2) are brought together. This dimer is stable and can undergo chemical reactions with other molecules, but it can also be broken apart through the application of energy, such as through the use of ultraviolet light. Other examples of excimers include the benzene dimer and the toluene trimmer.
Excimers have a wide range of applications in fields such as chemistry, physics, and biology. For example, they can be used to study the properties of molecules and their interactions with other molecules, or to create new materials with unique properties. In biology, excimers can be used to study the behavior of proteins and other biomolecules, and to develop new drugs and therapies.
In summary, an excimer is a type of molecule that is formed when two or more molecules are brought together and then broken apart, often through the application of energy. Excimers have a wide range of applications in fields such as chemistry, physics, and biology, and can be used to study the properties of molecules and their interactions with other molecules, or to create new materials with unique properties.



