{"term":{"id":"05935","title":"star macromolecule","longtitle":"IUPAC Gold Book - star macromolecule","doi":"10.1351\/goldbook.S05935","code":"S05935","status":"current","also defines":"<em>also defines<\/em>: <i>n<\/i>-star macromolecule, regular star macromolecule, variegated star macromolecule","definitions":[{"id":1,"text":"A macromolecule containing a single branch point from which linear chains (arms) emanate.","notes":{"1":"A star macromolecule with \\(n\\) linear chains (arms) attached to the branch point is termed an \\(n\\)-star macromolecule, e.g. five-star macromolecule.","2":"If the arms of a star macromolecule are identical with respect to constitution and degree of polymerization, the macromolecule is termed a regular star macromolecule.","3":"If different arms of a star macromolecule are composed of different monomeric units, the macromolecule is termed a variegated star macromolecule."},"links":[{"term":"branch point","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/B00728"},{"term":"constitution","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/C01282"},{"term":"degree of polymerization","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/D01569"},{"term":"linear chains","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/L03546"},{"term":"macromolecule","url":"https:\/\/goldbook.iupac.org\/\/terms\/view\/M03667"}],"sources":["PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2296 (https:\/\/doi.org\/10.1351\/pac199668122287)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/S05935\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/S05935\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/S05935\/plain"},"citation":"Citation: 'star macromolecule' 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.S05935","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":"2026-05-28T09:15:51+00:00"}}