کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221248 463380 2007 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption kinetic and properties of self-assembled monolayer based on mono(6-deoxy-6-mercapto)-β-cyclodextrin molecules
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Adsorption kinetic and properties of self-assembled monolayer based on mono(6-deoxy-6-mercapto)-β-cyclodextrin molecules
چکیده انگلیسی

The kinetic of the assembly and adsorption processes of mono(6-deoxy-6-mercapto)-β-cyclodextrin (βCDSH) on gold surfaces in situ and in real time have been investigated by surface plasmon resonance technique (SPR). The film thickness, dielectric constant and its coverage capability were determined by SPR with one-wavelength approach. To unambiguously determine the film parameters avoiding multi-layer adsorption as well as an underestimation of the binding constants of the adsorption process, the influence of the mass transport of βCDSH was investigated and controlled. Under flow regime the SPR angle was monitored in several concentrations of thiol and the data were fitted by using a two-step adsorption model based on a fast adsorption of the thiol molecules in a first step followed by its slow rearrangement on the gold surface. Finally, the selectivity of the host–guest property of the βCDSH monolayer was investigated using [Fe(CN)6]3−/4− and ferrocenemonocarboxylic acid as redox probes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 601, Issues 1–2, 15 March 2007, Pages 181–193
نویسندگان
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