Evidence map›Paper›PMID 38541511›Full record

ArticleMaterials (Basel, Switzerland)2024

Derivatives of Phenyl Pyrimidine and of the Different Donor Moieties as Emitters for OLEDs.

Hryhorii Starykov, Oleksandr Bezvikonnyi, Karolis Leitonas, Jurate Simokaitiene, Dmytro Volyniuk, Eigirdas Skuodis, Rasa Keruckiene, Juozas Vidas Grazulevicius

Abstract read
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In one paragraph

Article in Materials (Basel, Switzerland), 2024. 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. 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.

Hryhorii StarykovDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.
Oleksandr BezvikonnyiDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.
Karolis LeitonasDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.
Jurate SimokaitieneDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.
Dmytro VolyniukDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.ORCID 0000-0003-3526-2679
Eigirdas SkuodisDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.
Rasa KeruckieneDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.ORCID 0000-0002-9809-5815
Juozas Vidas GrazuleviciusDepartment of Polymer Chemistry and Technology, Faculty of Chemical Technology, Kaunas University of Technology, K. Barsausko St. 59, LT-51423 Kaunas, Lithuania.

Funding

Lietuvos Mokslo Taryba S-MIP-23-50
6 · The paper itself

Abstract

Two derivatives of phenyl pyrimidine as acceptor unit and triphenylamino or 4,4'-dimethoxytriphenylamino donor groups were designed and synthesized as emitters for organic light-emitting diodes (OLEDs) aiming to utilize triplet excitons in the electroluminescence. Thermogravimetric analysis revealed high thermal stability of the compounds with 5% weight loss temperatures of 397 and 438 °C. The theoretical estimations and photophysical data show the contributions of local excited and charge transfer states into emission. The addition of the methoxy groups led to the significant improvement of hole-transporting properties and the bathochromic shift of the emission from blue to green-blue spectral diapason. It is shown that mixing of the compounds with the organic host results in facilitation of the delayed emission. The singlet-triplet energy splitting was found to be too big for the thermally activated delayed fluorescence. No thermal activation of the long-lived emission was detected. No experimental evidence for triplet-triplet annihilation and room temperature phosphorescence were detected making the hot exciton mechanism the most probable one. The OLEDs based on the compounds reached the maximum external quantum efficiency of up to 10.6%.

Indexed as

methoxy groupOLEDphenyl pyrimidineTADFtriphenylamine

Identifiers

PMID38541511
PMCPMC10972299

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