کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6605305 1424100 2017 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the decisive role of the sulfur-based anchoring group in the electro-assisted formation of self-assembled monolayers on gold
ترجمه فارسی عنوان
در نقش تعیین کننده گروه بند انگشتی مبتنی بر گوگرد در شکل گیری الکترونی تک لایه های خودمختار بر روی طلا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
A reproducible electro-assisted method is proposed to follow the influence of different sulfur-based anchoring groups on the adsorption kinetics and thermodynamics of SAM formation on gold electrodes. This has been made possible thanks to the preparation of several molecules containing various anchoring groups (thiol, thioester, acyclic and cyclic disulfides, thiosulfonate) while preserving the same spacer redox head group. In this paper we focus on the question of a substantial difference between SAMs derived from either alkylthiols or disulfides using cyclic voltammetry. The comparison of equilibrium surface coverage, affinity constant toward gold surface and stability suggest a decisive role of the nature of the anchoring group in the formation of the monolayers. Moreover, a significant difference of the desorption behavior of SAMs on gold, pre-formed from either thiol or disulfide, has clearly been demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 257, 10 December 2017, Pages 165-171
نویسندگان
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