Evidence map›Paper›PMID 32784767›Full record

ArticlePolymers2020

Effect of Thermal Annealing on Conformation of MEH-PPV Chains in Polymer Matrix: Coexistence of H- and J-Aggregates.

Shu Hu, Yang Liao, Yang Zhang, Xiaoliang Yan, Zhenlu Zhao, Weiqiang Chen, Xin Zhang, Hongxing Liu, Heng Li, Li Li and 2 more

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Polymers, 2020. 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
0.3field-weighted citation impact, top 50% of its field
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, 5 citations in OpenAlex.

  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

12 authors at 2 institutions in 1 country.

Shu HuSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.ORCID 0000-0003-0572-4529
Yang LiaoSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Yang ZhangSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Xiaoliang YanSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Zhenlu ZhaoBeijing Spacecrafts, Beijing 100094, China.
Weiqiang ChenBeijing Spacecrafts, Beijing 100094, China.
Xin ZhangBeijing Spacecrafts, Beijing 100094, China.
Hongxing LiuBeijing Spacecrafts, Beijing 100094, China.
Heng LiSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Li LiSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Ming SunSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Chuanxiang ShengSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Nanjing University of Science and Technology · CNChina Academy of Space Technology · CN

Funding

National Natural Science Foundation of China 61574078, 61874056, 61704063
6 · The paper itself

Abstract

In diluted solid solution using poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) and polymethyl methacrylate (PMMA) or polystyrene (PS), both aggregated and extended conformations could be formed according to the weight ratio. Aggregated conformation in as-cast MEH-PPV/PMMA film presented a J-aggregate-like photoluminescence (PL) emission. After annealing at 160 °C, its PL showed characteristics of both J- and H-aggregates at the same time; however, extended conformation showed an oligomer-like emission, which was not sensitive to either measurement temperature or annealing temperature. Thus, the conformation transition between aggregated and extended is unlikely to happen in MEH-PPV/PMMA blends during thermal annealing. On the contrary, in MEH-PPV/PS blends, extended conformation dominated in as-cast film with oligomer-like emissions; after annealing at 160 °C, both J- and H- aggregate-like PL emissions were observed, indicating the conformation transitioned from extended to aggregated. Therefore, our work may suggest a new method to manipulate photophysical properties of conjugated polymers by combining appropriate host matrix and thermal annealing processes.

Indexed as

extended conformationJ- and H-aggregatesMEH-PPVphotoluminescence

Identifiers

PMID32784767
PMCPMC7465953
OpenAlexW3047752442

What OpenQuestion holds

Textmetadata
LicenceCC BY
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 OpenQuestion graph.