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Photochemistry - Wikipedia
Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible (400–750 nm), or infrared radiation (750–2500 nm). [1]
Photochemical reaction | Light-Induced Chemical Changes | Britannica
Photochemical reaction, a chemical reaction initiated by the absorption of energy in the form of light. The consequence of molecules’ absorbing light is the creation of transient excited states whose chemical and physical properties differ greatly from the original molecules.
Photochemical Reaction: Definition, Examples, & Applications
A photochemical reaction is a chemical reaction initiated by the absorption of energy in the form of light (photons), resulting in specific products. Usually, molecules prefer to remain in the state of lowest energy, known as the ground state.
Photochemistry - Michigan State University
A photochemical reaction occurs when internal conversion and relaxation of an excited state leads to a ground state isomer of the initial substrate molecule, or when an excited state undergoes an intermolecular addition to another reactant molecule in the ground state.
What Is Photochemistry? Definition and Examples
Unlike heat-driven chemistry, where energy is distributed broadly across a system, photochemistry delivers energy in precise packets (photons) to individual molecules, pushing them into excited states where entirely new reactions become possible.
Photochemistry - Latest research and news | Nature
The study of photochemical systems that use sunlight to drive important chemical reactions or to generate electricity is of great practical significance for the development of sustainable sources...
Photochemical Reaction - an overview | ScienceDirect Topics
Photochemical reactions are defined as chemical processes that occur when molecules absorb radiation (photons), leading to the formation of transient excited states which can result in new chemical species through mechanisms such as photodissociation, photoisomerization, or electron transfer.
15.1: Introduction to Photochemistry - Chemistry LibreTexts
In order to be absorbed, a photon's energy has to match an energy difference within the compound that is absorbing it. In the case of visible or ultraviolet light, the energy of a photon is roughly in the region that would be appropriate to promote an electron to a higher energy level.
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