Bimolecular Sandwich Aggregates of Porphyrin Nanorings.

Henrik Gotfredsen, Janko Hergenhahn, Fernanda Duarte, Timothy D W Claridge, Harry L Anderson

Abstract read

In one paragraph

Article in Journal of the American Chemical Society, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it

0cells of the map it votes in

2citing 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

2 citing papers in PubMed.

Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions.Angewandte Chemie (International ed. in English) · 2025
Article
An 18-Porphyrin Nanoring at the Size Limit for Global Aromaticity.Journal of the American Chemical Society · 2025
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.

Henrik GotfredsenDepartment of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, OX1 3TA, U.K.ORCID 0000-0002-9559-7190

Janko HergenhahnDepartment of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, OX1 3TA, U.K.ORCID 0000-0002-1844-2734

Fernanda DuarteDepartment of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, OX1 3TA, U.K.ORCID 0000-0002-6062-8209

Timothy D W ClaridgeDepartment of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, OX1 3TA, U.K.ORCID 0000-0001-5583-6460

Harry L AndersonDepartment of Chemistry, University of Oxford, Chemistry Research Laboratory, Oxford, OX1 3TA, U.K.ORCID 0000-0002-1801-8132

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extended π-systems often form supramolecular aggregates, drastically changing their optical and electronic properties. However, aggregation processes can be difficult to characterize or predict. Here, we show that butadiyne-linked 8- and 12-porphyrin nanorings form stable and well-defined bimolecular aggregates with remarkably sharp NMR spectra, despite their dynamic structures and high molecular weights (12.7 to 26.0 kDa). Pyridine breaks up the aggregates into their constituent rings, which are in slow exchange with the aggregates on the NMR time scale. All the aggregates have the same general two-layer sandwich structure, as deduced from NMR spectroscopy experiments, including

Identifiers

PMID39186461

DOI10.1021/jacs.4c09267

PMCPMC11403599

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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.