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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.
PHOTOCHEMICAL Definition & Meaning - Merriam-Webster
The meaning of PHOTOCHEMICAL is of, relating to, or resulting from the chemical action of radiant energy and especially light. How to use photochemical in a sentence.
Photochemistry - ChemTalk
Photochemistry is the study of chemical reactions, processes, and mechanisms initiated by light. This article explores the fundamentals of photochemistry, its applications, and the significance it holds in both nature and technology. When a molecule absorbs light, it gains energy.
Photochemical Reaction: Mechanisms, Types, Examples_2025
Unlike thermochemical reactions, which require heat to proceed, photochemical reactions occur when molecules absorb photons, usually in the ultraviolet (UV) or visible spectrum, leading to excited states that can alter the course of chemical change.
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.
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...
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