TITLE:
Assembly of Oligoglycine Layers on Mica Surface
AUTHORS:
Svetlana V. Tsygankova, Alexander A. Chinarev, Alexander B. Tuzikov, Ilya S. Zaitsev, Nikolai Severin, Alexey A. Kalachev, Jurgen P. Rabe, Nicolai V. Bovin
KEYWORDS:
Self-Assembling, Oligoglycine, Scanning Force Microscopy, Monolayers
JOURNAL NAME:
Journal of Biomaterials and Nanobiotechnology,
Vol.2 No.1,
January
27,
2011
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.