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Sensing capability of molecularly imprinted self-assembled monolayer

Paper ID Volume ID Publish Year Pages File Format Full-Text
3832 191 2011 5 PDF Available
Title
Sensing capability of molecularly imprinted self-assembled monolayer
Abstract

A molecularly imprinted self-assembled monolayer (SAM) was fabricated on a gold plate by forming a monolayer with both 1-hexadecanethiol and the template molecule, and removing the template molecules by solvent extraction. Cholesterol, cholic acid, and deoxycholic acid were used as the template molecules. Cyclic voltammograms were obtained using these imprinted gold plates as a working electrode, with Ag/AgCl reference electrode and Pt counter electrode. Potassium ferricyanide was used as a background material for oxidation and reduction. These imprinted monolayers were capable of discriminating the substrate that had been imprinted. The stability of the imprinted monolayers was estimated precisely and the thickness change of the monolayer was estimated using quartz crystal microbalance (QCM). During repeated detection, 1-hexadecanethiol molecules on the gold plate were tightly adhered to the gold surface. However, the sensing ability was reduced with repeated detection, suggesting that these phenomena were due to the movement of hexadecanethiol molecules on the gold plate.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Fabrication of a molecularly imprinted self-assembled monolayer (SAM). ► Cholesterol, cholic acid, and deoxycholic acid were used as the template molecules. ► These imprinted monolayers were capable of discriminating the substrate. ► The stability of the imprinted monolayers was estimated.

Keywords
Imprinting; Self-assembled monolayer; Cholesterol; Cyclic voltammogram; Quartz crystal microbalance; Sensor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 54, Issue 1, 15 March 2011, Pages 57–61
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us