Quenching of substituted polyparaphenylenevinylenes photoluminescence by 2D MoS2 and modified graphenes

•Restacking-free conducting polymer/2D nanoparticles based nanocomposites.•Quenching of polymer photoluminescence due to addition of 2D nanoparticles.•Significant photocurrent increase in the nanocomposites.•Interaction between the components results in 1H→1 T transition in 2D MoS2. Electron accepto...

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Published inSynthetic metals Vol. 264; p. 116376
Main Authors Posudievsky, Oleg Yu, Kondratyuk, Andrii S., Papakin, Mykhailo S., Kozarenko, Olga A., Koshechko, Vyacheslav G., Pokhodenko, Vitaly D.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 01.06.2020
Elsevier BV
Subjects
2D MoS2
Conducting polymers
Fullerenes
Graphene
Macromolecules
Modified graphenes
Molybdenum disulfide
Nanocomposites
Nanoparticles
Photoelectric effect
Photoelectric emission
Photoluminescence
Photovoltaic cells
Quenching
Raman spectroscopy
Solar cells
Substituted polyparaphenylenevinylenes
Substitutes
Nanocomposites
Substituted polyparaphenylenevinylenes
Modified graphenes
2D MoS2
Photoluminescence
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Summary:•Restacking-free conducting polymer/2D nanoparticles based nanocomposites.•Quenching of polymer photoluminescence due to addition of 2D nanoparticles.•Significant photocurrent increase in the nanocomposites.•Interaction between the components results in 1H→1 T transition in 2D MoS2. Electron acceptors, alternative to fullerenes, are of special interest. Hybrid nanocomposites of conducting polymers (substituted polyparaphenylenevinylenes) with 2D MoS2 and modified graphenes obtained by the mechanochemical method are prepared. It is found that inorganic 2D nanoparticles in such nanocomposites effectively interact with conjugated macromolecules that causes the absence of restacking of 2D nanoparticles and the polymer photoluminescence quenching. It is shown by Raman spectroscopy that the high acceptor characteristics of 2D MoS2 nanoparticles are due to their transfer to the metallic state as a result of 1H-1T structural transition. A significant increase in the photocurrent in the studied nanocomposites in comparison with the initial CPs is established which indicates the perspective of such nanocomposites as a functional layer of solar cells.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2020.116376