期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 89, 期 1-2, 页码 103-106出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-4005(02)00449-5
关键词
L-serine; molecular imprinted polymers (MIPs); enantioselectivity; quartz crystal microbalance (QCM); acoustic wave
An acoustic wave sensor coated with an artificial biomimetic recognition element has been developed to selectively detect the amino acid L-serine. A highly specific non-covalently imprinted polymer was cast on one electrode of a quartz crystal microbalance (QCM) as a thin permeable film. Selective rebinding of the L-serine was observed as a frequency shift in the QCM with a detection limit of 2 ppb and for concentrations up to 0.4 ppm. The sensor binding is shown to be capable of discrimination between L- and D-stereoisomers of serine as a result of the enantioselectivity of the imprinted binding sites. (C) 2002 Elsevier Science B.V. All rights reserved.
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