MIPs logo MIPdatabase      Special issue call for papers   
Custom Search
Reference type: Journal
Authors: Kan XW, Liu TT, Li C, Zhou H, Xing ZL, Zhu AH
Article Title: A novel electrochemical sensor based on molecularly imprinted polymers for caffeine recognition and detection.
Publication date: 2012
Journal: Journal of Solid State Electrochemistry
Volume: 16
Issue: (10)
Page numbers: 3207-3213.
DOI: 10.1007/s10008-012-1760-1

Abstract: A sensitive and selective electrochemical sensor based on molecularly imprinted polymers (MIPs) was developed for caffeine (CAF) recognition and detection. The sensor was constructed through the following steps: multiwalled carbon nanotubes and gold nanoparticles were first modified onto the glassy carbon electrode surface by potentiostatic deposition method successively. Subsequently, o-aminothiophenol (ATP) was assembled on the surface of the above electrode through Au-S bond before electropolymerization. During the assembled and electropolymerization processes, CAF was embedded into the poly( o-aminothiophenol) film through hydrogen bonding interaction between CAF and ATP, forming an MIP electrochemical sensor. The morphologies and properties of the sensor were characterized by scanning electron microscopy, cyclic voltammetry, and differential pulse voltammetry. The recognition and determination of the sensor were observed by measuring the changes of amperometric response of the oxidation-reduction probe, [Fe(CN)6]3- / [Fe(CN)6]4-, on modified electrode. The results demonstrated that the prepared sensor had excellent selectivity and high sensitivity for CAF, and the linear range was 5.0 x 10-10 ~ 1.6 x 10-7 mol L-1 with a detection limit of 9.0 x 10-11 mol L-1 (S/N = 3). The sensor was also successfully employed to detect CAF in tea samples
Template and target information: caffeine, CAF
Author keywords: Electrochemical sensor, molecular imprinted polymers, Multiwalled carbon nanotubes, gold nanoparticles, caffeine

  mipdatabase.com logo imprinters do it in bulk shirt  Science Teacher peptide mug    Shirt featuring the template Caffeine


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner