Evidence map›Paper›PMID 37264101›Full record

ArticleNature chemistry2023

Multistep, site-selective noncovalent synthesis of two-dimensional block supramolecular polymers.

Norihiko Sasaki, Jun Kikkawa, Yoshiki Ishii, Takayuki Uchihashi, Hitomi Imamura, Masayuki Takeuchi, Kazunori Sugiyasu

Abstract read
PubMed Publisher
In one paragraph

Article in Nature chemistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Article
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  7. One- and Two-Dimensional Polymorphism in a Hydrogen-Bonding Bis-Ureido-Squaramide.Angewandte Chemie (International ed. in English) · 2026
    Article
  8. "Optochemistry", when chemistry meets optics.Science and technology of advanced materials · 2026
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
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  18. Article
  19. Article
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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.

Norihiko SasakiMolecular Design and Function Group, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.ORCID http://orcid.org/0000-0001-8122-058X
Jun KikkawaElectron Microscopy Group, Center for Basic Research on Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.ORCID http://orcid.org/0000-0003-0659-1844
Yoshiki IshiiDepartment of Physics, Nagoya University, Nagoya, Japan.
Takayuki UchihashiDepartment of Physics, Nagoya University, Nagoya, Japan.ORCID http://orcid.org/0000-0002-0263-5312
Hitomi ImamuraMolecular Design and Function Group, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.
Masayuki TakeuchiMolecular Design and Function Group, Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan.ORCID http://orcid.org/0000-0002-0207-0665
Kazunori SugiyasuDepartment of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan. sugiyasu.kazunori.8z@kyoto-u.ac.jp.ORCID http://orcid.org/0000-0001-5699-2772

Funding

Ministry of Education, Culture, Sports, Science and Technology (MEXT) 20H04669Ministry of Education, Culture, Sports, Science and Technology (MEXT) 20H04682Ministry of Education, Culture, Sports, Science and Technology (MEXT) JP19K05592Ministry of Education, Culture, Sports, Science and Technology (MEXT) JP20H05868Ministry of Education, Culture, Sports, Science and Technology (MEXT) JP22H02134
6 · The paper itself

Abstract

Although the principles of noncovalent bonding are well understood and form the basis for the syntheses of many intricate supramolecular structures, supramolecular noncovalent synthesis cannot yet achieve the levels of precision and complexity that are attainable in organic and/or macromolecular covalent synthesis. Here we show the stepwise synthesis of block supramolecular polymers from metal-porphyrin derivatives (in which the metal centre is Zn, Cu or Ni) functionalized with fluorinated alkyl chains. These monomers first undergo a one-dimensional supramolecular polymerization and cyclization process to form a toroidal structure. Subsequently, successive secondary nucleation, elongation and cyclization steps result in two-dimensional assemblies with concentric toroidal morphologies. The site selectivity endowed by the fluorinated chains, reminiscent of regioselectivity in covalent synthesis, enables the precise control of the compositions and sequences of the supramolecular structures, as demonstrated by the synthesis of several triblock supramolecular terpolymers.

Identifiers

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Registered trials

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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.