Modeling of self-assembled monolayers (SAMs) of Octadecanethiol and Hexadecanethiol on gold (Au) and silver (Ag)

被引：25

作者：

Uddin, M. Jalal ^{[1
]}

Hossain, M. Khalid ^{[2
]}

Hossain, Mohammad I. ^{[3
]}

Qarony, Wayesh ^{[3
]}

Tayyaba, S. ^{[4
]}

Mia, M. N. H. ^{[2
]}

Pervez, M. F. ^{[2
]}

Hossen, S. ^{[5
]}

机构：

[1] Islamic Univ, Dept Appl Phys Elect & Commun Engn, Kushtia 7003, Bangladesh

[2] Bangladesh Atom Energy Commiss, Inst Elect Atom Energy Res Estab, Dhaka 1349, Bangladesh

[3] Amer Int Univ Bangladesh, Dept Elect & Elect Engn, Dhaka 1213, Bangladesh

[4] Univ Lahore, Dept Comp Engn, Lahore 54000, Pakistan

[5] Natl Univ, Khulna Govt Mahila Coll, Dept Phys, Gazipur 1704, Bangladesh

来源：

RESULTS IN PHYSICS | 2017年 / 7卷

关键词：

Self-assembled monolayers (SAMs); Octadecanethiol (ODT); Hexadecanethiol (HDT; Impedance; Capacitance of the SAM (C-SAM); Resistance of the SAM (R-SAM); SOLAR-CELLS; SURFACE; DEVICES; NANOPARTICLES; SPECTROSCOPY; RESISTANCE; CHARGE; PET;

D O I：

10.1016/j.rinp.2017.06.055

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work proposes a modeling of self-assembled monolayers (SAMs) to assess the quality of SAM layers in terms of their leaky behavior. In the modeling, electrochemical impedance spectroscopy (EIS) and a conceptual and simplified resistance-resistance-capacitance (RRC) electrical model from an electrochemical setup were demonstrated. Based on the model, Matlab-based simulation was carried out to find out the suggestive low frequency measurement for analyzing the defective monolayers. Finally, the developed electrical model facilitated the interpretation of the EIS spectra measured in the range of 10 Hz to 100 kHz and provided the capacitance, resistance and thickness of the monolayer. Thus the proposed model could be considered as a powerful tool to characterize the defective SAMs, which was very specific to determine the resistive behavior of the self-assembled monolayers prepared for shorter adsorption time. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license.

引用

页码：2289 / 2295

页数：7

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