13973 IUPAC Gold Book - pseudorotaxane polymer 10.1351/goldbook.13973 13973 current synonym: polypseudorotaxane 1 Polymer composed of macromolecules that are macromolecular pseudorotaxanes. A narrower definition of pseudorotaxane polymer as "a rotaxane polymer without bulky end-groups preventing dethreading of cyclic molecules" has also been published. A pseudorotaxane polymer in the molecule of which only one end of a threading component is capped with a stopper is sometimes called "semirotaxane polymer" or "polysemirotaxane". Though the synonym "polypseudorotaxane" currently appears in the literature, its use is discouraged. This term, from a purely semantic point of view, implies many threaded rings, a polymer formed from a pseudorotaxane, while a molecule of a pseudorotaxane polymer can comprise a single threaded ring. Pseudorotaxane polymers are sometimes referred to in the literature as "pseudopolyrotaxanes". Use of this term is strongly discouraged owing to possible misinterpretation as "pseudopolymeric" or "pseudomacromolecular" rotaxane. macromolecular pseudorotaxanes https://goldbook.iupac.org//terms/view/13967 pseudorotaxane https://goldbook.iupac.org//terms/view/13972 rotaxane polymer https://goldbook.iupac.org//terms/view/13980 threading component https://goldbook.iupac.org//terms/view/13985 PAC, 2012, 84, 2135. 'Terminology and nomenclature for macromolecular rotaxanes and pseudorotaxanes (IUPAC Recommendations 2012)' on page 2140 (https://doi.org/10.1351/PAC-REC-11-10-15) https://goldbook.iupac.org/terms/view/13973/html https://goldbook.iupac.org/terms/view/13973/json https://goldbook.iupac.org/terms/view/13973/plain Citation: 'pseudorotaxane polymer' 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.13973 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. 2026-04-18T01:26:46+00:00