AFM Imaging of Single Polycation Molecules Contrasted with Cyanide-Bridged Compounds

We developed the simple contrasting procedure to improve AFM visualization of single positively charged polymer chains via counterion exchange between Cl- anions and bulky hexacyanoferrate anions or negatively charged nanoclusters of Prussian Blue. This method allowed us to increase thickness of the...

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Published in:Macromolecules 2005-01, Vol.38 (2), p.501-506
Main Authors: Kiriy, Anton, Gorodyska, Ganna, Kiriy, Nataliya, Sheparovych, Roman, Lupytsky, Robert, Minko, Sergiy, Stamm, Manfred
Format: Article
Language:English
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Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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cited_by cdi_FETCH-LOGICAL-a289t-8498428b7811ae6d04fb60a9d00b279b026d592a4f2a5ebe06ed779f7ecd18773
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description We developed the simple contrasting procedure to improve AFM visualization of single positively charged polymer chains via counterion exchange between Cl- anions and bulky hexacyanoferrate anions or negatively charged nanoclusters of Prussian Blue. This method allowed us to increase thickness of the resulting structures up to 10 nm and, consequently, to provide visualization of isolated polymer chains deposited on a glass surface (root-mean-square roughness about 1 nm). In contrast, the contrasting with relatively large PB clusters (more than 10 nm in size) distorts conformations of the molecules and even eventually leads to a fragmentation of polymer chains.
doi_str_mv 10.1021/ma048454u
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
title AFM Imaging of Single Polycation Molecules Contrasted with Cyanide-Bridged Compounds
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