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 | |
| Publication status | Published - 2017 Nov 1 |
| Externally published | Yes |
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Keywords
- Composites
- Nanoparticles
- Plasma
- Polysilane
- Quantum dots
ASJC Scopus subject areas
- Chemistry(all)
- Environmental Chemistry
- Biochemistry
- Chemical Engineering(all)
- Polymers and Plastics
- Materials Chemistry
Cite this
Nanostructuration of polysilane-SiQDs composite by pulsed electrical discharges in water. / Sacarescu, Liviu; Simionescu, Mihaela; Sacarescu, Gabriela; Quade, Antje; Kolb, Juergen F.; Miron, Camelia.
In: Reactive and Functional Polymers, Vol. 120, 01.11.2017, p. 38-45.Research output: Contribution to journal › Article
}
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
PY - 2017/11/1
Y1 - 2017/11/1
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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UR - http://www.scopus.com/inward/citedby.url?scp=85029608321&partnerID=8YFLogxK
U2 - 10.1016/j.reactfunctpolym.2017.09.005
DO - 10.1016/j.reactfunctpolym.2017.09.005
M3 - Article
VL - 120
SP - 38
EP - 45
JO - Reactive and Functional Polymers
JF - Reactive and Functional Polymers
SN - 1381-5148
ER -