کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1334027 979131 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel biological active multilayer film based on polyoxometalate with pendant support-ligand
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
A novel biological active multilayer film based on polyoxometalate with pendant support-ligand
چکیده انگلیسی

A novel nanosized biological active multilayer film composed of polyoxometalate (POM) anion α-[SiW11O39Co(H2PO4)]7−(abbr. SiW11Co–PO4) and poly(diallyldi methylammonium chloride) (abbr. PDDA) was fabricated by layer-by-layer self-assembly (LBL). The composition and growth processes of the films have been determined by X-ray photoelectron spectra (XPS) and ultraviolet-visible absorption spectra (UV). The composite film was formed by the alternate adsorption of SiW11Co–PO4 and PDDA, and the deposition process was quantitative and highly reproducible from layer to layer. The morphology of the film was studied by atomic force microscopy (AFM), which showed that the film was relatively uniform and smooth, and POM anions aggregated into nanoclusters distributing on the surface uniformly. The film exhibited favorable electrochemical behavior of POM indicated by cyclic voltammetry (CV). The film can immobilize the DNA molecules via Mg2+-bridging medium.

A novel nanosized biological active multilayer film based on POM anion α-[SiW11O39Co(H2PO4)]7− (abbr. SiW11Co–PO4) and poly(diallyldimethyl ammonium chloride) (PDDA) was fabricated by layer-by-layer self-assembly (LBL). The composite film was formed by the alternate adsorption of SiW11Co–PO4 and PDDA, and the deposition process was quantitative and highly reproducible from layer to layer. The film can immobilize the DNA molecules via Mg2+-bridging medium, which possesses potential biological activity.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 178, Issue 12, December 2005, Pages 3735–3739
نویسندگان
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