Evidence map›Paper›PMID 37604822›Full record

ArticleNature communications2023

Direct visual observation of pedal motion-dependent flexibility of single covalent organic frameworks.

Hongbin Chi, Yang Liu, Ziyi Li, Wanxin Chen, Yi He

Abstract read
In one paragraph

Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed.

  1. Article
  2. Article
  3. Dynamic covalent organic frameworks.Chemical science · 2026
    Review
  4. Article
  5. Tailoring a 3D Covalent Organic Framework Toward Facile Functionalization.Small (Weinheim an der Bergstrasse, Germany) · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
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

5 authors.

Hongbin ChiSchool of Nuclear Science & Technology, Southwest University of Science and Technology, 621010, Mianyang, P. R. China.
Yang LiuSchool of Nuclear Science & Technology, Southwest University of Science and Technology, 621010, Mianyang, P. R. China.
Ziyi LiSchool of Nuclear Science & Technology, Southwest University of Science and Technology, 621010, Mianyang, P. R. China.
Wanxin ChenSchool of Nuclear Science & Technology, Southwest University of Science and Technology, 621010, Mianyang, P. R. China.
Yi HeSchool of Nuclear Science & Technology, Southwest University of Science and Technology, 621010, Mianyang, P. R. China. yhe2014@126.com.ORCID http://orcid.org/0000-0002-9324-3305

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Flexible covalent organic frameworks (COFs) have been studied for applications containing sorption, selective separation, and catalysis. How to correlate the microscopic structure with flexibility in COFs is a great challenge. Herein, we visually track the flexible deformation behaviors of single COF-300 and COF-300-AR particles in response to solvent vapour guests with dark-field microscopy (DFM) in an in operando manner. COF-300-AR with freely-rotating C-N single bonds are synthesized by the reduction of imine-based COF-300 consisting of rigid C=N double bonds without changing topological structure and crystallinity. Unexpectedly, we observe that the flexible deformation of COF-300 is extremely higher than that of COF-300-AR despite it bears many C-N single bonds, clearly illustrating the apparent flexibility decrease of COF-300 after reduction. The high spatiotemporal resolution of DFM enables the finding of inter-particle variations of the flexibility among COF-300 crystals. Experimental characterizations by variable-temperature X-ray diffraction and infrared spectroscopy as well as theoretical calculations demonstrate that the flexible deformation of COF-300 is ascribed to the pedal motion around rigid C=N double bonds. These observations provide new insights into COF flexibility.

Identifiers

PMID37604822
PMCPMC10442449

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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.