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Assembly of Oligoglycine Layers on Mica Surface

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Author(s): Svetlana V. Tsygankova | Alexander A. Chinarev | Alexander B. Tuzikov | Ilya S. Zaitsev | Nikolai Severin | Alexey A. Kalachev | Jurgen P. Rabe | Nicolai V. Bovin

Journal: Journal of Biomaterials and Nanobiotechnology
ISSN 2158-7027

Volume: 02;
Issue: 01;
Start page: 91;
Date: 2011;
Original page

Keywords: Self-Assembling | Oligoglycine | Scanning Force Microscopy | Monolayers

ABSTRACT
Assembly of [Gly7-NHCH2-]4C, [Gly7-NHCH2-]3C CH3 and [Gly4NH(CH2)5-]2 peptides on mica surface in aqueous so-lution was studied. The peptides are capable of forming atomically smooth (2.65-4.3 nm in height) layers assembled as polyglycine II. Monomers in the layers are situated normally to the surface. Formation of analogous flat 2D structures also takes place in solution but much more slowly than on mica surface, i.e. negatively charged surface plays an active role promoting the assembly.
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