期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 108, 期 1-2, 页码 608-612出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2004.11.077
关键词
sensor; artificial enzyme; biological phosphate ester; dephosphorylation; PO43-; electrochemical detection; polyion complex
Biological phosphate ester (phosphoric ester) substances, e.g. ATP, ADP, AMP, pyrophosphate and deoxyribonucleic acid, play important roles as either energy-carrying substances or substances carrying biological information. The author has designed and synthesized an artificial enzyme PMP complex (Cu) which dephosphorylates phosphate ester substances. The synthesized PMP complex (Cu) showed a prominent dephosphorylating effect on biological phosphate ester substances, e.g. ATP, ADP, AMP and pyrophosphate. A PMP complex (Cu)-coated electrode was employed as a sensor device. A current response could be obtained as a reaction to the application of phosphate ester substances on the sensor when a constant potential of -250 mV versus Ag/AgCl was applied. In the case of ATP, the sensor could determine the ATP concentration within the range between 1 nM and 20 mM, and could also determine the presence of other biological phosphate ester substances. (c) 2004 Elsevier B.V. All rights reserved.
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