Issue 5, 2013

New synthesis method for 4-MAPBA monomer and using for the recognition of IgM and mannose with MIP-based QCM sensors

Abstract

Quartz crystal microbalance (QCM) sensors coated with molecularly imprinted polymers (MIP) have been developed for the recognition of immunoglobulin M (IgM) and mannose. In this method, methacryloylamidophenylboronic acid (MAPBA) was used as a monomer and mannose was used as a template. For this purpose, initially, QCM electrodes were modified with 2-propene-1-thiol to form mannose-binding regions on the QCM sensor surface. In the second step, the methacryloylamidophenylboronic acid–mannose [MAPBA–mannose], pre-organized monomer system, was prepared using the MAPBA monomer. Then, a molecularly imprinted film was coated on to the QCM electrode surface under UV light using ethylene glycol dimethacrylate (EDMA), and azobisisobutyronitrile (AIBN) as a cross-linking agent and an initiator, respectively. The mannose can be simultaneously bound to MAPBA and fitted into the shape-selective cavities. The binding affinity of the mannose-imprinted sensors was investigated using the Langmuir isotherm. The mannose-imprinted QCM electrodes have shown homogeneous binding sites for mannose (Ka: 3.3 × 104 M−1) and heterogeneous binding sites for IgM (Ka1: 1.0 × 104 M−1; Ka2: 3.3 × 103 M−1).

Graphical abstract: New synthesis method for 4-MAPBA monomer and using for the recognition of IgM and mannose with MIP-based QCM sensors

Article information

Article type
Paper
Submitted
10 Sep 2012
Accepted
23 Dec 2012
First published
04 Jan 2013

Analyst, 2013,138, 1558-1563

New synthesis method for 4-MAPBA monomer and using for the recognition of IgM and mannose with MIP-based QCM sensors

S. E. Diltemiz, D. Hür, R. Keçili, A. Ersöz and R. Say, Analyst, 2013, 138, 1558 DOI: 10.1039/C2AN36291K

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