09615 IUPAC Gold Book - hyperbranched macromolecule 10.1351/goldbook.09615 09615 current 1 Highly branched macromolecule, the constitutional repeating units of which are in substantial part branch constitutional repeating units and terminal constitutional repeating units. Hyperbranched macromolecules, unlike dendrimer molecules, usually comprise a number of randomly distributed linear constitutional repeating units. Examples of hyperbranched molecules with a core unit. Terminal, linear and dendritic constitutional repeating units and the core unit are circled. The preferred constitutional repeating unit is chosen such that the branch points are at its end in the dendron direction. For the purpose of determining the type of constitutional repeating units (dendritic, semi-dendritic, terminal or linear CRUs) in a hyperbranched macromolecule, the core unit should be treated as a CRU. Terminal https://goldbook.iupac.org//terms/view/09630 branch constitutional repeating units https://goldbook.iupac.org//terms/view/09602 core unit https://goldbook.iupac.org//terms/view/09603 dendrimer molecules https://goldbook.iupac.org//terms/view/09605 dendritic https://goldbook.iupac.org//terms/view/09610 dendritic constitutional repeating units https://goldbook.iupac.org//terms/view/09607 linear https://goldbook.iupac.org//terms/view/09622 semi-dendritic https://goldbook.iupac.org//terms/view/09629 PAC, 2019, 91, 523. 'Nomenclature and terminology for dendrimers with regular dendrons and for hyperbranched polymers (IUPAC Recommendations 2017)' on page 530 (https://doi.org/10.1515/pac-2016-1217) https://goldbook.iupac.org/terms/view/09615/html https://goldbook.iupac.org/terms/view/09615/json https://goldbook.iupac.org/terms/view/09615/plain Citation: 'hyperbranched 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.09615 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. 2026-06-20T06:28:36+00:00