{"term":{"id":"05497","title":"Schenck-sensitization mechanism","longtitle":"IUPAC Gold Book - Schenck-sensitization mechanism","doi":"10.1351\/goldbook.S05497","code":"S05497","status":"current","definitions":[{"id":1,"text":"Chemical transformation of one molecular entity caused by photoexcitation of a sensitizer, which undergoes temporary covalent bond formation with the molecular entity (M). ","notes":{"1":"This mechanism is the basis of the Type I photooxygenation.","2":"The reactive molecular entity could be ground-state molecular dioxygen, $\\ce{O2}$, in which case energy transfer may occur producing singlet molecular oxygen, this being the basis of the Type II photooxygenation."},"links":[{"term":"photoexcitation","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/P04613"},{"term":"photooxygenation","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/P04641"},{"term":"sensitizer","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/S05610"},{"term":"transformation","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/T06446"}],"sources":["PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 418 (https:\/\/doi.org\/10.1351\/pac200779030293)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/S05497\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/S05497\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/S05497\/plain"},"citation":"Citation: 'Schenck-sensitization mechanism' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.S05497","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-06-13T11:21:45+00:00"}}