The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Existem métodos utilizados para testar a pureza óptica dos enantiômeros; entretanto, a maioria dos métodos simples não são precisos e métodos mais complicados são melhores. Como resultado, estes métodos não podem ser amplamente utilizados para fins industriais. O objetivo desta pesquisa é projetar um sensor que possa discriminar D-aminoácidos de L-aminoácidos. O sensor projetado possui membranas quirais e utiliza a técnica de mudança de impedância dessas membranas quirais para discriminar os aminoácidos. Usamos uma técnica de ruído-FFT (Fast Fourier Transform) para determinar a impedância da membrana. Quando uma membrana enantiomérica reside em um ambiente quiral, (E*), interações diastereoméricas (E*-D) e (E*-L), que podem diferir suficientemente na disposição das moléculas das membranas de modo a permitir a discriminação de substâncias ópticas devido à mudança nas características da membrana. Com concentrações crescentes dos aminoácidos, as alterações na resistência da membrana dependiam da atividade óptica dos aminoácidos. Os resultados sugerem que as alterações de impedância da membrana quiral com reação diastereomérica podem ser utilizadas pelo sensor químico de alto desempenho para medir a pureza óptica de diferentes substâncias.
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Hardwell CHIBVONGODZE, Kenshi HAYASHI, Kiyoshi TOKO, "Discrimination of D-Amino Acids from L-Amino Acids Using Membrane Impedance Change" in IEICE TRANSACTIONS on Electronics,
vol. E83-C, no. 7, pp. 1028-1034, July 2000, doi: .
Abstract: There are methods used to test the optical purity of enantiomers; however, most of the simple methods are not precise and more complicated methods are better. As a result, these methods cannot be widely used for industrial purposes. The aim of this research is to design a sensor which can discriminate D-amino acids from L-amino acids. The designed sensor has chiral membranes and uses the technique of impedance change of these chiral membranes to discriminate the amino acids. We used a noise-FFT (Fast Fourier Transform) technique to determine the membrane impedance. When an enantiomer membrane resides in a chiral environment, (E*), diastereomeric interactions (E*-D) and (E*-L) are created, which may differ sufficiently in the arrangement of molecules of the membranes so as to permit the discrimination of optical substances due to the change in membrane characteristics. With increasing concentrations of the amino acids, the membrane resistance changes depended on the optical activity of the amino acids. The results suggest that the impedance changes of the chiral membrane with diastereomeric reaction can be used for the high-performance chemical sensor to measure the optical purity of different substances.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e83-c_7_1028/_p
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@ARTICLE{e83-c_7_1028,
author={Hardwell CHIBVONGODZE, Kenshi HAYASHI, Kiyoshi TOKO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Discrimination of D-Amino Acids from L-Amino Acids Using Membrane Impedance Change},
year={2000},
volume={E83-C},
number={7},
pages={1028-1034},
abstract={There are methods used to test the optical purity of enantiomers; however, most of the simple methods are not precise and more complicated methods are better. As a result, these methods cannot be widely used for industrial purposes. The aim of this research is to design a sensor which can discriminate D-amino acids from L-amino acids. The designed sensor has chiral membranes and uses the technique of impedance change of these chiral membranes to discriminate the amino acids. We used a noise-FFT (Fast Fourier Transform) technique to determine the membrane impedance. When an enantiomer membrane resides in a chiral environment, (E*), diastereomeric interactions (E*-D) and (E*-L) are created, which may differ sufficiently in the arrangement of molecules of the membranes so as to permit the discrimination of optical substances due to the change in membrane characteristics. With increasing concentrations of the amino acids, the membrane resistance changes depended on the optical activity of the amino acids. The results suggest that the impedance changes of the chiral membrane with diastereomeric reaction can be used for the high-performance chemical sensor to measure the optical purity of different substances.},
keywords={},
doi={},
ISSN={},
month={July},}
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TY - JOUR
TI - Discrimination of D-Amino Acids from L-Amino Acids Using Membrane Impedance Change
T2 - IEICE TRANSACTIONS on Electronics
SP - 1028
EP - 1034
AU - Hardwell CHIBVONGODZE
AU - Kenshi HAYASHI
AU - Kiyoshi TOKO
PY - 2000
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E83-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2000
AB - There are methods used to test the optical purity of enantiomers; however, most of the simple methods are not precise and more complicated methods are better. As a result, these methods cannot be widely used for industrial purposes. The aim of this research is to design a sensor which can discriminate D-amino acids from L-amino acids. The designed sensor has chiral membranes and uses the technique of impedance change of these chiral membranes to discriminate the amino acids. We used a noise-FFT (Fast Fourier Transform) technique to determine the membrane impedance. When an enantiomer membrane resides in a chiral environment, (E*), diastereomeric interactions (E*-D) and (E*-L) are created, which may differ sufficiently in the arrangement of molecules of the membranes so as to permit the discrimination of optical substances due to the change in membrane characteristics. With increasing concentrations of the amino acids, the membrane resistance changes depended on the optical activity of the amino acids. The results suggest that the impedance changes of the chiral membrane with diastereomeric reaction can be used for the high-performance chemical sensor to measure the optical purity of different substances.
ER -