کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
868833 909815 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Some thoughts on the existence of ion and water channels in highly dense and well-ordered CH3-terminated alkanethiol self-assembled monolayers on gold
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Some thoughts on the existence of ion and water channels in highly dense and well-ordered CH3-terminated alkanethiol self-assembled monolayers on gold
چکیده انگلیسی

Through extensive and systematic reviewing of literatures, this paper presents some thoughts on the existence of ion and water channels in highly dense and well-ordered CH3-terminated alkanethiol self-assembled monolayers (CnSH-SAMs) on gold: (1) based on the combinational effect of “the van der Waals interaction between the neighbor hydrocarbon chains”, “the framework size of CnSH molecule” and “the surface lattice structure of CnSH-SAMs on gold”, a simple ideal model of the close-packed CnSH-SAMs is proposed for the first time. The channel with an appropriate diameter of about 3 Å (∼3 Å) existing in SAMs on Au is deduced, which is found large enough for ions and water molecules to permeate; (2) through summarizing the literature reports for various experiments (e.g. scan microscopy techniques and electrochemical methods, etc.), the existence of the ion and water channels (∼3 Å) in close-packed CnSH-SAMs is verified; (3) furthermore, the effect of the ions and water molecules permeation on the studies of the SAMs’ electron tunneling process is discussed. This simple ideal model of the close-packed CnSH-SAMs established by us may clarify the controversies about the permeation mechanism of ions and water molecules in CnSH-SAMs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 24, Issue 5, 1 January 2009, Pages 1074–1082
نویسندگان
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