08925 IUPAC Gold Book - inner-sphere electron transfer atom-transfer radical polymerization 10.1351/goldbook.08925 08925 current initialism: ISET-ATRP 1 Atom-transfer radical polymerization where the activation step involves direct atom or group transfer. ATRP is sometimes used as a synonym for ISET-ATRP. The term ISET-ATRP can be used to specify that the mechanism of ATRP involves direct atom or group transfer as distinct from single electron transfer followed by atom or group transfer or OSET-ATRP. OSET-ATRP https://goldbook.iupac.org//terms/view/08927 atom-transfer radical polymerization https://goldbook.iupac.org//terms/view/08924 PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1109 (https://doi.org/10.1515/pac-2020-1211) https://goldbook.iupac.org/terms/view/08925/html https://goldbook.iupac.org/terms/view/08925/json https://goldbook.iupac.org/terms/view/08925/plain Citation: 'inner-sphere electron transfer atom-transfer radical polymerization' 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.08925 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-06-29T08:30:40+00:00