کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5426015 1395872 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Densely-packed self-assembled monolayers on gold surfaces from a conformationally constrained helical hexapeptide
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Densely-packed self-assembled monolayers on gold surfaces from a conformationally constrained helical hexapeptide
چکیده انگلیسی

A novel hexapeptide was functionalized at the N-terminus by a lipoyl group for binding to gold substrates. Owing to the high content of α-aminoisobutyric acid residues, the peptide adopts a rigid helical conformation despite the shortness of its main chain. Binding of the peptide to gold was investigated by quartz crystal microbalance, cyclic voltammetry, X-ray photoelectron spectroscopy, and scanning tunneling microscopy under ultra-high vacuum conditions. Scanning tunneling microscopy experiments revealed that the peculiar self-assembly properties of this short helical peptide determine the complex morphology of the monolayer, showing 'stripes', i.e. peptide aggregates horizontally layered on the gold surface, and 'holes', i.e. Au vacancy islands coated by the peptide monolayer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 600, Issue 2, 15 January 2006, Pages 409-416
نویسندگان
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