Biosensors and Bioelectronics 2015-12-15

QCM sensing of melphalan via electropolymerized molecularly imprinted polythiophene films.

Ambareesh Kumar Singh, Meenakshi Singh

文献索引：Biosens. Bioelectron. 74 , 711-7, (2015)

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摘要

A sensor for the determination of melphalan (mel) using 3-thiophene acetic acid (3-TAA) as functional monomer was fabricated by electropolymerization on gold surface. The polymeric film was formed on the surface of gold electrode as well as on gold-coated electrochemical quartz crystal microbalance (EQCM) electrode by electropolymerization of 3-TAA in presence of mel template by cyclic voltammetry (CV). Various parameters were optimized for controlling the performance of molecularly imprinted polymer (MIP) modified sensor such as ratio of monomer and template ratio, number of electropolymerization cycles, mass deposited in each cycle, pH, etc. The prepared MIP sensor was highly specific towards mel and the recognition was analyzed by both differential pulse voltammetry (DPV) and quartz crystal microbalance (QCM) to verify the changes in currents. In the optimal condition, response of MIP sensor to mel was linearly proportional to its concentration with limit of detection (LOD) as 5.40 ng mL(-1). Hence, a highly sensitive and selective piezoelectric sensor for mel has been reported here via imprinting approach for the first time.Copyright © 2015 Elsevier B.V. All rights reserved.

相关化合物

  • 5-氨基水杨酸
  • 对氨基水杨酸
  • 巴氯芬
  • 3-氨基邻羟基苯甲酸
  • L-苯丙氨酸
  • 噻吩-3-乙酸

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