Evidence map›Paper›PMID 41816619›Full record

ArticleChemical science2026

Realizing luminescent single crystals of covalent organic polymers with color-tunable emission through isomer engineering.

Yanyan Qin, Pengfei She, Xiaoda Wang, Jianjun Wu, Mingbing Lian, Feiyang Li, Shujuan Liu, Qianfeng Gu, Yun Ma, Qiang Zhao and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Chemical science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Ion-Driving Polymer Entanglement for Dynamic Organic Phosphorescence.Angewandte Chemie (International ed. in English) · 2026
    Article
  2. 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

11 authors.

Yanyan QinCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Pengfei SheCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Xiaoda WangCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Jianjun WuCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Mingbing LianCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Feiyang LiSchool of Environmental and Chemical Engineering, Jiangsu University of Science and Technology Zhenjiang 212100 P. R. China.ORCID https://orcid.org/0000-0001-5361-6229
Shujuan LiuState Key Laboratory of Flexible Electronics (LoFE), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China.
Qianfeng GuDepartment of Materials Science and Engineering, City University of Hong Kong Tat Chee Avenue Kowloon Tong Hong Kong P. R. China qiczhang@cityu.edu.hk.ORCID https://orcid.org/0000-0003-4581-9565
Yun MaCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.ORCID https://orcid.org/0000-0001-8352-3760
Qiang ZhaoCollege of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Qichun ZhangDepartment of Materials Science and Engineering, City University of Hong Kong Tat Chee Avenue Kowloon Tong Hong Kong P. R. China qiczhang@cityu.edu.hk.ORCID https://orcid.org/0000-0003-1854-8659

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Preparing luminescent single crystals of B-N-containing covalent organic polymers (COPs) is very important but highly challenging, since most conditions only produce luminescence-silent crystals. To address this issue, we employ an isomer engineering strategy to successfully prepare luminescent (CityU-50) and luminescence-silent (CityU-60) single crystals of B-N linked COPs based on two distinct chromophore isomers, 3,3',6,6'-tetra(pyridin-4-yl)-9,9'-bicarbazole (3,6-TPy-BCz) and 2,2',7,7'-tetra (pyridin-4-yl)-9,9'-bicarbazole (2,7-TPy-BCz). Single-crystal X-ray diffraction analysis reveals that 3,6-TPy-BCz can lead to a "loose" stacking model of helical polymer chains in CityU-50, effectively suppressing interchain aggregation and endowing CityU-50 with unprecedented visible-light-excitable luminescence, while 2,7-TPy-BCz results in a "close" packing model of helical polymer chains in CityU-60, leading to a non-emissive structure. This factor validates our design principle. We also find that CityU-50 can display excitation-dependent and solvent-responsive luminescence due to the different aggregation states within the crystal and solvent-triggered packing changes in the polymer chains of CityU-50. Based on these responses, we demonstrate the application of CityU-50 in advanced information encryption. This work not only delivers a new class of smart crystalline materials but also establishes a powerful strategy for engineering crystalline polymers with precisely tailored structures and properties.

Identifiers

PMID41816619
PMCPMC12973223

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Registered trials

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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.