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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Layer-by-Layer Naphthalenediimide/Zn Phosphonate Hybrid Films Grown from Aqueous Solutions by a Simple Deposition Technique

Full text
Author(s):
Tosco, Bruna [1] ; Melo, Barbra Poly-Anna Vera [1] ; Merino, Daniel Hermida [2] ; Rey, Jose Fernando Queiruga [1] ; Brochsztain, Sergio [1]
Total Authors: 5
Affiliation:
[1] Fed Univ ABC, Engn Modeling & Appl Social Sci Ctr, BR-09210170 Santo Andre, SP - Brazil
[2] Netherlands Org Sci Res NWO, F-38043 Grenoble - France
Total Affiliations: 2
Document type: Journal article
Source: Langmuir; v. 37, n. 7, p. 2494-2502, FEB 23 2021.
Web of Science Citations: 0
Abstract

Hybrid thin films containing N,N'-bis(2-phosphonoethyl)-1,4,5,8-naphthalenediimide (PNDI) and zinc cations (PNDI/Zn films) were built on silicon and indium tin oxide (ITO) substrates by a simple layer-by-layer deposition process. Silicon substrates primed with a layer of phosphonate groups were immersed alternately into zinc nitrate and PNDI aqueous solutions, yielding PNDI/Zn films containing up to 40 layers. ITO substrates, on the other hand, were used without priming, and the deposition sequence began with a PNDI layer. All film growth steps were conducted at room temperature, using aqueous solutions, thus assuring an environmentally clean process. The PNDI/Zn films were studied by X-ray reflectivity and grazing angle X-ray diffraction, using synchrotron radiation source. The films were constituted by crystallites, containing zinc phosphonate layers oriented nearly parallel to the substrate. PNDI/Zn films on ITO were reduced to stable free radicals, which were observed by UV-visible spectroscopy. Moreover, PNDI/Zn bulk materials with structural analogy with the films were produced. (AU)

FAPESP's process: 16/19791-6 - In situ Studies of nanoparticles Nucleation and Growth assitited by simultaneous Small Angle X ray Scattering-Wide Angle X ray Scattering (SAXS/ WAXS) and X-ray Absortion spectroscopy (XAS) in combination with Uv- Vis spectroscopy
Grantee:Jose Fernando Queiruga Rey
Support Opportunities: Scholarships abroad - Research
FAPESP's process: 16/05496-2 - Synthesis and characterization of periodic mesoporous organosilicas containing aromatic imides for applications in the energy sector
Grantee:Sergio Brochsztain
Support Opportunities: Regular Research Grants