ArticleNature chemistry2016
Cyclic polymers from alkynes.
Article in Nature chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
23 citing papers in PubMed.
- Controlled living ring expansion polymerization for the precision synthesis of cyclic poly(aryl isocyanides).Nature communications · 2026Article
- Macrocyclic Ruthenium Ring Expansion Metathesis Polymerization Initiators Exhibit Tether Length-Dependent Behavior.Organometallics · 2025Article
- Linking Metallacycle Transfer with Ring-Opening Metathesis to Generate Polyacetylenes of Unprecedented Structure.Angewandte Chemie (International ed. in English) · 2025Article
- Proton-triggered topological transformation in superbase-mediated selective polymerization enables access to ultrahigh-molar-mass cyclic polymers.Nature chemistry · 2024Article
- Soliton Based Dynamic Nuclear Polarization: An Overhauser Effect in Cyclic Polyacetylene at High Field and Room Temperature.The journal of physical chemistry letters · 2024Article
- Evaluation of Tungsten Catalysis among Early Transition Metals forInorganic chemistry · 2024Article
- Recyclable cyclic bio-based acrylic polymer via pairwise monomer enchainment by a trifunctional Lewis pair.Nature chemistry · 2023Article
- Scalable and continuous access to pure cyclic polymers enabled by 'quarantined' heterogeneous catalysts.Nature chemistry · 2022Article
- Isolation of an Elusive Phosphametallacyclobutadiene and Its Role in Reversible Carbon-Carbon Bond Cleavage.Angewandte Chemie (International ed. in English) · 2022Article
- Peptide/protein-based macrocycles: from biological synthesis to biomedical applications.RSC chemical biology · 2022Review
- Highly Crowded Twisted Thienylene-Phenylene Structures: Evidence for Through-Space Orbital Coupling in a [4]Catenated Topology.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022Article
- Mechanism of Spatial and Temporal Control in Precision Cyclic Vinyl Polymer Synthesis by Lewis Pair Polymerization.Angewandte Chemie (International ed. in English) · 2022Article
- Cyclic polyacetylene.Nature chemistry · 2021Article
- By-design molecular architecturesChemical science · 2021Review
- Highly active alkyne metathesis catalysts operating under open air condition.Nature communications · 2021Article
- The synthesis, properties and potential applications of cyclic polymers.Nature chemistry · 2020Review
- Wavelength-gated photoreversible polymerization and topology control.Chemical science · 2020Article
- Simplicity in the Design, Operation, and Applications of Mechanically Interlocked Molecular Machines.ACS central science · 2020Review
- Acetylene in Organic Synthesis: Recent Progress and New Uses.Molecules (Basel, Switzerland) · 2018Review
- Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cyclic polymers have dramatically different physical properties compared with those of their equivalent linear counterparts. However, the exploration of cyclic polymers is limited because of the inherent challenges associated with their synthesis. Conjugated linear polyacetylenes are important materials for electrical conductivity, paramagnetic susceptibility, optical nonlinearity, photoconductivity, gas permeability, liquid crystallinity and chain helicity. However, their cyclic analogues are unknown, and therefore the ability to examine how a cyclic topology influences their properties is currently not possible. We have solved this challenge and now report a tungsten catalyst supported by a tetraanionic pincer ligand that can rapidly polymerize alkynes to form conjugated macrocycles in high yield. The catalyst works by tethering the ends of the polymer to the metal centre to overcome the inherent entropic penalty of cyclization. Gel-permeation chromatography, dynamic and static light scattering, viscometry and chemical tests are all consistent with theoretical predictions and provide unambiguous confirmation of a cyclic topology. Access to a wide variety of new cyclic polymers is now possible by simply choosing the appropriate alkyne monomer.
Identifiers
27442285What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.