Evidence map›Paper›PMID 34845344›Full record

ArticleNature chemistry2022

Concurrent control over sequence and dispersity in multiblock copolymers.

Maria-Nefeli Antonopoulou, Richard Whitfield, Nghia P Truong, Dries Wyers, Simon Harrisson, Tanja Junkers, Athina Anastasaki

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Article in Nature chemistry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Maria-Nefeli AntonopoulouLaboratory of Polymeric Materials, Department of Materials, ETH Zürich, Zürich, Switzerland.
Richard WhitfieldLaboratory of Polymeric Materials, Department of Materials, ETH Zürich, Zürich, Switzerland.ORCID http://orcid.org/0000-0003-4787-2060
Nghia P TruongLaboratory of Polymeric Materials, Department of Materials, ETH Zürich, Zürich, Switzerland.ORCID http://orcid.org/0000-0001-9900-2644
Dries WyersPolymer Reaction Design Group, School of Chemistry, Monash University, Clayton, Victoria, Australia.ORCID http://orcid.org/0000-0003-0841-9917
Simon HarrissonLaboratoire de Chimie des Polymères Organiques, University of Bordeaux/ENSCBP/CNRS UMR5629, Pessac, France.
Tanja JunkersPolymer Reaction Design Group, School of Chemistry, Monash University, Clayton, Victoria, Australia.ORCID http://orcid.org/0000-0002-6825-5777
Athina AnastasakiLaboratory of Polymeric Materials, Department of Materials, ETH Zürich, Zürich, Switzerland. athina.anastasaki@mat.ethz.ch.ORCID http://orcid.org/0000-0002-6615-1026

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Controlling monomer sequence and dispersity in synthetic macromolecules is a major goal in polymer science as both parameters determine materials' properties and functions. However, synthetic approaches that can simultaneously control both sequence and dispersity remain experimentally unattainable. Here we report a simple, one pot and rapid synthesis of sequence-controlled multiblocks with on-demand control over dispersity while maintaining a high livingness, and good agreement between theoretical and experimental molecular weights and quantitative yields. Key to our approach is the regulation in the activity of the chain transfer agent during a controlled radical polymerization that enables the preparation of multiblocks with gradually ascending (Ɖ = 1.16 → 1.60), descending (Ɖ = 1.66 → 1.22), alternating low and high dispersity values (Ɖ = 1.17 → 1.61 → 1.24 → 1.70 → 1.26) or any combination thereof. We further demonstrate the potential of our methodology through the synthesis of highly ordered pentablock, octablock and decablock copolymers, which yield multiblocks with concurrent control over both sequence and dispersity.

Indexed as

PolymersMacromolecular SubstancesMolecular WeightPolymerizationMacromolecular SubstancesPolymers

Identifiers

What OpenQuestion holds

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Registered trials

None linked

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.