Self assembled monolayer of ethanthiol on gold surfaces by Quartz Crystal Microbalance

Author

Cimpoca, Gh V. ; Popescu, I.V. ; Dulama, I.D. ; Radulescu, C. ; Bancuta, I. ; Cimpoca, M. ; Cernica, I. ; Schiopu, V. ; Danila, M. ; Gavrila, R.

Author_Institution

Phys. Dept., Valahia Univ. of Targoviste, Targoviste, Romania

Volume

1

fYear

2009

fDate

12-14 Oct. 2009

Firstpage

135

Lastpage

138

Abstract

Self-assembled monolayer (SAM) techniques offer a new strategy for the immobilization of antibodies, antigens and DNA on the surface of quartz crystal electrodes. The quartz crystal microbalance (QCM) system provides a unique opportunity to monitor, in-situ and in real-time, the rate of adsorption of ethanthiol onto gold. The change in frequency resulting from the adsorption of ethanthiol molecules onto the gold electrode of a QCM crystal allows direct measurement of the rate of formation of Self Assembled Monolayer (SAMs). The IR spectroscopy with attenuated total reflectance (ATR) confirms the formation of the Au-thiolate bonds in the CH stretching region.

Keywords

adsorption; attenuated total reflection; gold; infrared spectra; microbalances; monolayers; organic compounds; self-assembly; Au; DNA immobilisation; IR spectroscopy; SAM formation rate; SAM techniques; antibody immobilisation; antigen immobilisation; attenuated total reflectance; ethanthiol adsorption rate; ethanthiol self assembled monolayer; gold surface; quartz crystal microbalance; Chromium; Crystals; Electrodes; Frequency; Gold; Rough surfaces; Self-assembly; Substrates; Surface cleaning; Surface roughness; QCM; Self Assembled Monolayer;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference, 2009. CAS 2009. International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4244-4413-7

Type

conf

DOI

10.1109/SMICND.2009.5336590

Filename

5336590