Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/15454

Title: Heat-transfer-based detection of L-nicotine, histamine, and serotonin using molecularly imprinted polymers as biomimetic receptors
Authors: PEETERS, Marloes
Csipai, P.
Geerets, B.
Gruber, J.
CLEIJ, Thomas
Troost, F. J.
WAGNER, Patrick
Issue Date: 2013
Citation: ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 405 (20), p. 6453-6460
Abstract: In this work, we will present a novel approach for the detection of small molecules with molecularly imprinted polymer (MIP)-type receptors. This heat-transfer method (HTM) is based on the change in heat-transfer resistance imposed upon binding of target molecules to the MIP nanocavities. Simultaneously with that technique, the impedance is measured to validate the results. For proof-of-principle purposes, aluminum electrodes are functionalized with MIP particles, and l-nicotine measurements are performed in phosphate-buffered saline solutions. To determine if this could be extended to other templates, histamine and serotonin samples in buffer solutions are also studied. The developed sensor platform is proven to be specific for a variety of target molecules, which is in agreement with impedance spectroscopy reference tests. In addition, detection limits in the nanomolar range could be achieved, which is well within the physiologically relevant concentration regime. These limits are comparable to impedance spectroscopy, which is considered one of the state-of-the-art techniques for the analysis of small molecules with MIPs. As a first demonstration of the applicability in biological samples, measurements are performed on saliva samples spiked with l-nicotine. In summary, the combination of MIPs with HTM as a novel readout technique enables fast and low-cost measurements in buffer solutions with the possibility of extending to biological samples.
Notes: Peeters, M (reprint author); [Peeters, M.; Csipai, P.; Geerets, B.; Weustenraed, A.; van Grinsven, B.; Thoelen, R.; De Ceuninck, W.; Cleij, T. J.; Wagner, P.] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Csipai, P.; Gruber, J.] Univ Sao Paulo, Inst Quim, BR-05508000 Sao Paulo, Brazil. [Thoelen, R.] Xios Univ, Coll Limburg, B-3590 Diepenbeek, Belgium. [De Ceuninck, W.; Wagner, P.] IMEC VZW, Div IMOMEC, B-3590 Diepenbeek, Belgium. [Troost, F. J.] Maastricht Univ, Med Ctr, Dept Internal Med, Div Gastroenterol Hepatol, NL-6211 LK Maastricht, Netherlands. marloes.peeters@uhasselt.be
URI: http://hdl.handle.net/1942/15454
DOI: 10.1007/s00216-013-7024-9
ISI #: 000321911800008
ISSN: 1618-2642
Category: A1
Type: Journal Contribution
Validation: ecoom, 2014
Appears in Collections: Research publications

Files in This Item:

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.