Evidence map›Paper›PMID 39916566›Full record

ArticleSmall (Weinheim an der Bergstrasse, Germany)2025

Deep Blue Tetradentate Pt(II) Emitter Coordinated With Fused Fluorenyl N-heterocyclic Carbene. High Efficiency, Narrow FWHM, and Superior Operational Lifetime LT

Huiyang Li, Faan-Fung Hung, Siping Wu, Jiangzhen Qiu, Cuijin Li, Shaowei Nie, Jun Yang, Lian Duan, Pengcheng Zhou, Gang Cheng and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Small (Weinheim an der Bergstrasse, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

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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

11 authors.

Huiyang LiCollege of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
Faan-Fung HungState Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
Siping WuState Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
Jiangzhen QiuCollege of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
Cuijin LiCollege of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
Shaowei NieState Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
Jun YangState Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
Lian DuanKey Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Laboratory of Flexible Electronics Technology, Department of Chemistry, Tsinghua University, Beijing, 100084, China.
Pengcheng ZhouGuangdong Shunde Innovative Design Institute, Foshan, 528300, China.
Gang ChengState Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.ORCID https://orcid.org/0000-0001-8081-8205
Chi-Ming CheState Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.ORCID https://orcid.org/0000-0002-2554-7219

Funding

Innovation and Technology Fund MHP/134/22National Natural Science Foundation of China 22205265Research Start-up Fund Program of Zhongkai University of Agriculture and Engineering KA22016B785Science and Technology Research Project of Guangzhou 2023A04J1553
6 · The paper itself

Abstract

Blue tetradentate Pt(II) emitters and the corresponding organic light-emitting diodes (OLEDs) are promising for next-generation high-resolution displays. However, developing blue Pt(II) emitters that simultaneously achieve high efficiency, high color purity, and excellent operational stability remains challenging. In this study, we developed two new high-performance deep blue tetradentate Pt(II) emitters (Pt1 and Pt2) whose ligands contain 1-(3,5-di-tert-butylphenyl)-9,9-dimethyl-1,9-dihydrofluoreno[2,3-d]imidazolium or 3-(3,5-di-tert-butylphenyl)-9,9-dimethyl-3,9-dihydrofluoreno[2,3-d]imidazolium carbene moiety (DMFI). These Pt(II) emitters display excellent photophysical characteristics including high photoluminescence quantum yield (PLQY) of up to 0.90, narrow full width at half maximum (FWHM), short emission lifetime, and high horizontal transition dipole ratio of up to 0.80. As a result, deep blue phosphorescent OLEDs are fabricated with a narrow FWHM of 21 nm, a high maximum external quantum efficiency (EQE

Indexed as

deep blueoperational lifetimeorganic light‐emitting diodesplatinum

Identifiers

PMID39916566
PMCPMC11922001

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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.