Evidence map›Paper›PMID 37438369›Full record

ArticleNature communications2023

Mesitylated trityl radicals, a platform for doublet emission: symmetry breaking, charge-transfer states and conjugated polymers.

Petri Murto, Rituparno Chowdhury, Sebastian Gorgon, Erjuan Guo, Weixuan Zeng, Biwen Li, Yuqi Sun, Haydn Francis, Richard H Friend, Hugo Bronstein

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 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. 1,4-Dihydropyrrolo[3,2-Organic chemistry frontiers : an international journal of organic chemistry · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Organic Spin-State Photoswitches.Angewandte Chemie (International ed. in English) · 2025
    Review
  14. Chloromethoxytrityls: Tuning the SOMO Level of Stable Luminescent Radicals.Angewandte Chemie (International ed. in English) · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

10 authors.

Petri MurtoYusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.ORCID http://orcid.org/0000-0001-7618-000X
Rituparno Chowdhury *Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.
Sebastian Gorgon *Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.ORCID http://orcid.org/0000-0002-1361-1973
Erjuan Guo *Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.ORCID http://orcid.org/0000-0002-2205-8030
Weixuan Zeng *Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.ORCID http://orcid.org/0000-0003-1577-9021
Biwen LiCavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.
Yuqi SunCavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.ORCID http://orcid.org/0000-0002-8471-3010
Haydn FrancisYusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.
Richard H FriendCavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK. rhf10@cam.ac.uk.ORCID http://orcid.org/0000-0001-6565-6308
Hugo BronsteinYusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK. hab60@cam.ac.uk.ORCID http://orcid.org/0000-0003-0293-8775

Funding

EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council) SCORSRCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/S003126/1
6 · The paper itself

Abstract

Neutral π-radicals have potential for use as light emitters in optoelectronic devices due to the absence of energetically low-lying non-emissive states. Here, we report a defect-free synthetic methodology via mesityl substitution at the para-positions of tris(2,4,6-trichlorophenyl)methyl radical. These materials reveal a number of novel optoelectronic properties. Firstly, mesityl substituted radicals show strongly enhanced photoluminescence arising from symmetry breaking in the excited state. Secondly, photoexcitation of thin films of 8 wt% radical in 4,4'-bis(carbazol-9-yl)-1,1'-biphenyl host matrix produces long lived (in the order of microseconds) intermolecular charge transfer states, following hole transfer to the host, that can show unexpectedly efficient red-shifted emission. Thirdly, covalent attachment of carbazole into the mesitylated radical gives very high photoluminescence yield of 93% in 4,4'-bis(carbazol-9-yl)-1,1'-biphenyl films and light-emitting diodes with maximum external quantum efficiency of 28% at a wavelength of 689 nm. Fourthly, a main-chain copolymer of the mesitylated radical and 9,9-dioctyl-9H-fluorene shows red-shifted emission beyond 800 nm.

Identifiers

PMID37438369
PMCPMC10338495

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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.