NDLI: Determination of tyrosine using p-sulfonated calix[n]arene modified electrode

Content Provider	Springer Nature Link
Author	Pang, Tao Tao Zhang, Xu Yan Xue, Yong Bing
Copyright Year	2017
Abstract	Cyclic voltammetry was used to detect p-sulfonated calix[n]arenas (SCnA) how to immobilize on gold surface. P-sulfonated calix[n]arenes not only increased the specific surface area of the modified electrode, but also improved the enrichment ability of tyrosine. This led to a significant increase in peak current, and improved the sensitivity of tyrosine determination on the p-sulfonated calix[n]arenes-modified electrode. The modified electrode showed good catalytic ability of l-tyrosine oxidation reaction. The peak current of l-tyrosine increased and the oxidation peak potential shifted negatively with cavity size of the SCnA-modified electrode, which indicated that the catalytic ability of the modified electrode to l-tyrosine oxidation reaction was also enhanced. For the tyrosine guest molecule, the order of electrochemical activity and magnitude of catalytic ability of the oxidation reaction of the three modified gold electrodes was as follows: SC4A > SC6A > SC8A. The electrode had high selectivity and stability for the determination of tyrosine, with a wide linear range, low detection limit and high sensitivity at different concentrations under different pH values. This resulted in an accurate, fast, sensitive electrochemical method for the determination of tyrosine. The sensor was used for the determination of tyrosine in human urine with satisfactory results.
Starting Page	275
Ending Page	282
Page Count	8
File Format	PDF
ISSN	13883127
Journal	Journal of Inclusion Phenomena and Macrocyclic Chemistry
Volume Number	87
Issue Number	3-4
e-ISSN	15731111
Language	English
Publisher	Springer Netherlands
Publisher Date	2017-02-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	p-Sulfonated calix[n]arenes l-Tyrosine Cyclic voltammetry Modified electrode Organic Chemistry Food Science Crystallography and Scattering Methods
Content Type	Text
Resource Type	Article
Subject	Chemistry Condensed Matter Physics Food Science

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