MIPs logo MIPdatabase      MIP2020 Conference logo Use this space
Custom Search
Reference type: Journal
Authors: Santos WdJR, Santhiago M, Yoshida IVP, Kubota LT
Article Title: Electrochemical sensor based on imprinted sol-gel and nanomaterial for determination of caffeine.
Publication date: 2012
Journal: Sensors and Actuators B: Chemical
Volume: 166-167
Issue: (1)
Page numbers: 739-745.
DOI: 10.1016/j.snb.2012.03.051
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0925400512003140

Abstract: The development of a novel sensitive molecularly imprinted electrochemical sensor is described for the detection of caffeine. The sensor was prepared onto a glassy carbon electrode modified with multiwall carbon nanotubes (MWCNTs)/vinyltrimethoxysilane (VTMS) recovered by a molecularly imprinted siloxane (MIS) film prepared by sol-gel process. MWCNTs/VTMS was produced by a simple grafting of VTMS on MWCNTs surface by in situ free radical polymerization. The siloxane layer was obtained from the acid-catalyzed hydrolysis/condensation of a solution constituted by tetraethoxysilane (TEOS), methytrimethoxysilane (MTMS), 3-(aminopropyl)trimethoxysilane (APTMS) and caffeine, as a template molecule. The morphology and performance of the imprinted siloxane film was characterized by scanning electron microscopy (SEM) and differential pulse voltammetry (DPV). The MIS/MWCNTs-VTMS/GCE sensor was tested in a solution of the caffeine and other similar molecules. After optimization of the experimental conditions, the sensor showed a linear response range from 0.75 to 40 μmol L-1, with a detection limit (LOD) of 0.22 μmol L. The imprinted sensor was successfully tested to detect caffeine in real samples.
Template and target information: caffeine
Author keywords: Electrochemical sensor, Molecular imprinting siloxane, sol-gel, MWCNTs, caffeine

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

Molecules Special Issue call      Appeal for information


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