Nanostructuration of polysilane-SiQDs composite by pulsed electrical discharges in water

Liviu Sacarescu; Mihaela Simionescu; Gabriela Sacarescu; Antje Quade; Juergen F. Kolb; Camelia Miron

doi:10.1016/j.reactfunctpolym.2017.09.005

Nanostructuration of polysilane-SiQDs composite by pulsed electrical discharges in water

Liviu Sacarescu, Mihaela Simionescu, Gabriela Sacarescu, Antje Quade, Juergen F. Kolb, Camelia Miron

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Pulsed electrical discharges in water were used for nanostructuration of the polysilane-silicon quantum dots (SiQDs) composite dispersed in a cellulose acetate matrix. For this purpose, the polysilane-SiQDs composite was synthesized by chain scission of a poly[diphenyl-co-methyl(H)] oligomer in the presence of molten sodium and catalytic amounts of methyl(H) dichlorosilane. The resulting solid was utilized to prepare free standing thin films using the cellulose acetate matrix as support. Samples of these films were exposed to nanosecond pulsed electrical discharges in water. Through this approach, chemo-mechanical nanostructuration of specific silicon-based structures occurred by removing the excess of polysilane and by oxidative action. Fluorescence measurements of the plasma treated samples showed a higher intensity compared to the untreated ones. The elemental composition and the morphology of the film surface were investigated by TEM, XPS, UHR-SEM and AFM analysis. Such a technique represents a new approach toward a selective processing of the polysilane-SiQDs composite to obtain patterns with different optoelectronic properties on various supports.

Original language	English
Pages (from-to)	38-45
Number of pages	8
Journal	Reactive and Functional Polymers
Volume	120
DOIs	https://doi.org/10.1016/j.reactfunctpolym.2017.09.005
Publication status	Published - 2017 Nov
Externally published	Yes

Keywords

Composites
Nanoparticles
Plasma
Polysilane
Quantum dots

ASJC Scopus subject areas

Chemistry(all)
Environmental Chemistry
Biochemistry
Chemical Engineering(all)
Polymers and Plastics
Materials Chemistry

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@article{927be9104867418fac924377799b0567,

title = "Nanostructuration of polysilane-SiQDs composite by pulsed electrical discharges in water",

abstract = "Pulsed electrical discharges in water were used for nanostructuration of the polysilane-silicon quantum dots (SiQDs) composite dispersed in a cellulose acetate matrix. For this purpose, the polysilane-SiQDs composite was synthesized by chain scission of a poly[diphenyl-co-methyl(H)] oligomer in the presence of molten sodium and catalytic amounts of methyl(H) dichlorosilane. The resulting solid was utilized to prepare free standing thin films using the cellulose acetate matrix as support. Samples of these films were exposed to nanosecond pulsed electrical discharges in water. Through this approach, chemo-mechanical nanostructuration of specific silicon-based structures occurred by removing the excess of polysilane and by oxidative action. Fluorescence measurements of the plasma treated samples showed a higher intensity compared to the untreated ones. The elemental composition and the morphology of the film surface were investigated by TEM, XPS, UHR-SEM and AFM analysis. Such a technique represents a new approach toward a selective processing of the polysilane-SiQDs composite to obtain patterns with different optoelectronic properties on various supports.",

keywords = "Composites, Nanoparticles, Plasma, Polysilane, Quantum dots",

author = "Liviu Sacarescu and Mihaela Simionescu and Gabriela Sacarescu and Antje Quade and Kolb, {Juergen F.} and Camelia Miron",

note = "Funding Information: This work was supported by European Social Fund for Regional Development, Competitiveness Operational Programme Axis 1, Contract 142/10.10.2016 , cod MySMIS: 107464 – Project “Petru Poni Institute of Macromolecular Chemistry - Interdisciplinary Pol for Smart Specialization through Research and Innovation and Technology Transfer in Bio(nano)polymeric Materials and (Eco)Technology”, InoMatPol [ID P_36_570].",

year = "2017",

month = nov,

doi = "10.1016/j.reactfunctpolym.2017.09.005",

language = "English",

volume = "120",

pages = "38--45",

journal = "Reactive and Functional Polymers",

issn = "1381-5148",

publisher = "Elsevier",

}

TY - JOUR

T1 - Nanostructuration of polysilane-SiQDs composite by pulsed electrical discharges in water

AU - Sacarescu, Liviu

AU - Simionescu, Mihaela

AU - Sacarescu, Gabriela

AU - Quade, Antje

AU - Kolb, Juergen F.

AU - Miron, Camelia

N1 - Funding Information: This work was supported by European Social Fund for Regional Development, Competitiveness Operational Programme Axis 1, Contract 142/10.10.2016 , cod MySMIS: 107464 – Project “Petru Poni Institute of Macromolecular Chemistry - Interdisciplinary Pol for Smart Specialization through Research and Innovation and Technology Transfer in Bio(nano)polymeric Materials and (Eco)Technology”, InoMatPol [ID P_36_570].

PY - 2017/11

Y1 - 2017/11

N2 - Pulsed electrical discharges in water were used for nanostructuration of the polysilane-silicon quantum dots (SiQDs) composite dispersed in a cellulose acetate matrix. For this purpose, the polysilane-SiQDs composite was synthesized by chain scission of a poly[diphenyl-co-methyl(H)] oligomer in the presence of molten sodium and catalytic amounts of methyl(H) dichlorosilane. The resulting solid was utilized to prepare free standing thin films using the cellulose acetate matrix as support. Samples of these films were exposed to nanosecond pulsed electrical discharges in water. Through this approach, chemo-mechanical nanostructuration of specific silicon-based structures occurred by removing the excess of polysilane and by oxidative action. Fluorescence measurements of the plasma treated samples showed a higher intensity compared to the untreated ones. The elemental composition and the morphology of the film surface were investigated by TEM, XPS, UHR-SEM and AFM analysis. Such a technique represents a new approach toward a selective processing of the polysilane-SiQDs composite to obtain patterns with different optoelectronic properties on various supports.

AB - Pulsed electrical discharges in water were used for nanostructuration of the polysilane-silicon quantum dots (SiQDs) composite dispersed in a cellulose acetate matrix. For this purpose, the polysilane-SiQDs composite was synthesized by chain scission of a poly[diphenyl-co-methyl(H)] oligomer in the presence of molten sodium and catalytic amounts of methyl(H) dichlorosilane. The resulting solid was utilized to prepare free standing thin films using the cellulose acetate matrix as support. Samples of these films were exposed to nanosecond pulsed electrical discharges in water. Through this approach, chemo-mechanical nanostructuration of specific silicon-based structures occurred by removing the excess of polysilane and by oxidative action. Fluorescence measurements of the plasma treated samples showed a higher intensity compared to the untreated ones. The elemental composition and the morphology of the film surface were investigated by TEM, XPS, UHR-SEM and AFM analysis. Such a technique represents a new approach toward a selective processing of the polysilane-SiQDs composite to obtain patterns with different optoelectronic properties on various supports.

KW - Composites

KW - Nanoparticles

KW - Plasma

KW - Polysilane

KW - Quantum dots

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