A Rigid and Strong Donor Strategy for Solution-Processed Neat-Film Near-Infrared OLEDs Beyond 900 nm.

Shuo Li, Zhaomeng Sun, Wansheng Liu, Chao Yu, Xinmiao Niu, Hongbin Wu, Shouke Yan, Zhongjie Ren

Abstract read

In one paragraph

Article in Angewandte Chemie (International ed. in English), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Shuo LiState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China.

Zhaomeng SunInstitute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, School of Physics and Optoelectronics, South China University of Technology, Guangzhou, China.

Wansheng LiuInstitute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, School of Physics and Optoelectronics, South China University of Technology, Guangzhou, China.

Chao YuState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China.

Xinmiao NiuSinopec Beijing Research Institute of Chemical Industry, Beijing, China.

Hongbin WuInstitute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, School of Physics and Optoelectronics, South China University of Technology, Guangzhou, China.ORCID https://orcid.org/0000-0003-2770-6188

Shouke YanState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China.ORCID https://orcid.org/0000-0003-1627-341X

Zhongjie RenState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China.ORCID https://orcid.org/0000-0002-7981-4431

Funding

Beijing Natural Science Foundation Z250016National Natural Science Foundation of China 22575014National Natural Science Foundation of China 52273164Shandong Provincial Natural Science Foundation ZR2022ZD37

6 · The paper itself

Abstract

Near-infrared (NIR) organic light-emitting diodes (OLEDs) generally suffer from low external quantum efficiencies (EQEs). Conventional NIR thermally activated delayed fluorescence (TADF) emitters predominantly rely on triphenylamine (TPA)-based donors, restricting further molecular design. Herein, we develop four new NIR-TADF emitters incorporating a rigid and strongly electron-donating donor unit, in which the charge-transfer characteristics are finely tuned by regulating the connection positions of cyano groups on the acceptor framework. Solution-processed neat-film OLEDs exhibit electroluminescence from 867 to 922 nm. Notably, the device based on tBPz-CN36 achieves an EQE of 0.01% at 922 nm, representing one of the highest values reported for neat-film NIR TADF OLEDs in this spectral region. This work demonstrates that the introduction of a rigid donor that is independent of the TPA system, together with acceptor-site engineering through regulation of cyano connection positions, provides an effective molecular strategy for achieving long-wavelength NIR TADF emission beyond conventional TPA architectures.

Indexed as

indolophenazine donornear‐IR OLEDsquinoxaline acceptorTADF emission

Identifiers

PMID42179137

DOI10.1002/anie.7852611

PMCPMC13383070

What Socratic holds

Textmetadata

Read underepoch 390

Registered trials

None linked

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 Socratic graph.