Microstructures and growth characteristics of polyelectrolytes on silicon using layer-by-layer assembly

• Autorzy: Adina Bragaru , Mihaela Kusko , Antonio Radoi , Mihai Danila , Monica Simion , Florea Craciunoiu , Razvan Pascu , Iuliana Mihalache , Teodora Ignat
• Języki publikacji: EN

Abstrakty

EN

Growth processes of nanocomposite layers obtained by polyelectrolytes, poly(sodium 4-styrenesulfonate) (PSS) and poly(diallyldimethylammonium chloride) (PDADMAC), self-assembled on silicon surface using layer-by-layer (LbL) technique were investigated, and theoretical and experimental data are herein reported. Complementary microstructural and compositional analyses techniques (scanning electron microscopy, ellipsometry, X-ray reflectivity, zeta (ξ) potential measurements and attenuated total reflection infrared spectroscopy) were used for deep characterization of the multilayer structure formation. Electrophoretic zeta (ξ) potential measurements indicated that the surface charge was either positive or negative, depending on the polyelectrolyte used (PDADMAC or PSS). ATR-IR spectra confirmed the successfully silanization process and then, the building up of the nanocomposite layer. Morphological investigation and X-ray reflectivity demonstrated the growth process and cross-section size of the bilayers. Ellipsometric measurements were in very good agreement with SEM and XRR, showing once again the successful deposition of polyelectrolyte multilayers. [...]

Słowa kluczowe

EN

Layer-by-layer; Polyelectrolytes; Microanalysis; Nanocomposite structures

• Czasopismo: Open Chemistry
• Rocznik: 2013
• Tom: 11
• Numer: 2
• Strony: 205-214

Daty

wydano

2013-02-01

online

2012-11-29

Twórcy

autor

Adina Bragaru

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania,

autor

Mihaela Kusko

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Antonio Radoi

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Mihai Danila

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Monica Simion

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Florea Craciunoiu

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Razvan Pascu

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Iuliana Mihalache

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

autor

Teodora Ignat

• National Institute for Research and Development in Microtechnologies, (IMT - Bucharest), 72996, Bucharest, Romania

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Identyfikatory

DOI

10.2478/s11532-012-0152-9