Evidence map›Paper›PMID 41058169›Full record

ArticleAngewandte Chemie (International ed. in English)2025

Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions.

Janko Hergenhahn, Sebastian M Kopp, Henrik Gotfredsen, Kan Tang, Stephen Barlow, Seth R Marder, Christiane R Timmel, Harry L Anderson

Abstract read
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In one paragraph

Article in Angewandte Chemie (International ed. in English), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Spin Interactions in Supramolecular Assemblies of Porphyrin Oligomer Radical Anions.Angewandte Chemie (International ed. in English) · 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

8 authors.

Janko HergenhahnChemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K.
Sebastian M KoppChemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K.
Henrik GotfredsenChemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K.
Kan TangRenewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO 80309, USA.
Stephen BarlowRenewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO 80309, USA.
Seth R MarderRenewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO 80309, USA.
Christiane R TimmelChemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K.ORCID https://orcid.org/0000-0003-1828-7700
Harry L AndersonChemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K.ORCID https://orcid.org/0000-0002-1801-8132

Funding

Carlsbergfondet CF21-0436Engineering and Physical Sciences Research Council EP/S023828/1H2020 European Research Council 885606 ARO-MATOffice of Naval Research N00014-24-1-2115
6 · The paper itself

Abstract

Diradicals have potential applications in spintronics, molecular electronics, and dynamic nuclear polarization due to their unique electronic structure. Supramolecular diradicals are particularly attractive, as changes in conformation can be used to switch the spin state. In this work, we explore a class of supramolecular diradicals formed by the self-assembly of charged zinc porphyrin oligomers with bidentate ligands such as 1,4-diazabicyclo[2.2.2]octane (DABCO) and 4,4'-bipyridyl. Field-dependent nutation experiments on the anions of porphyrin ladder complexes show nutation frequencies corresponding to doublet and triplet species, which can both be attributed to the same spin system using simulations based on the time evolution of the density matrix. Density functional theory was used to calculate dipolar coupling tensors and provided insights into the electronic structure of these double-stranded assemblies.

Indexed as

Dipolar couplingDiradicalEPR spectroscopyPorphyrinSupramolecular chemistry

Identifiers

PMID41058169
PMCPMC12624324

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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.