{"term":{"id":"08887","title":"polyazomethines","longtitle":"IUPAC Gold Book - polyazomethines","doi":"10.1351\/goldbook.08887","code":"08887","status":"current","synonym":"<em>synonym<\/em>: poly (Schiff bases)","definitions":[{"id":1,"text":"Polymers composed of macromolecules containing azomethine (azanylylidenemethanylylidene) linkages in the backbone: \\[\\ce{-N=CR-}\\] where \\(\\ce{R}\\) is hydrogen, or an alkyl or aryl group (structure-based polymer class name).","notes":{"1":"A polymer with only pendant azomethine groups is excluded.","2":"The name azomethine is derived from the traditional names 'azo' for azanylylidene group \\(\\ce{-N=}\\) and methine' for the methanylylidene group \\(\\ce{-CH=}\\).","3":"The original distinction between polyazomethines and poly(Schiff base)s, which is that a group \\(\\ce{R}\\) in \\(\\ce{-N=CR-}\\) linkage cannot be hydrogen in a polyazomethine but can be hydrogen in a poly(Schiff base), making polyazomethines a subclass of poly(Schiff base)s, has nearly completely disappeared."},"exams":{"1":" "},"sources":["PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 55 (https:\/\/doi.org\/10.1515\/pac-2020-0501)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/08887\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/08887\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/08887\/plain"},"citation":"Citation: 'polyazomethines' 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.08887","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":"2026-06-20T07:36:29+00:00"}}